//
// This file is part of Open CASCADE Technology software library.
//
-// This library is free software; you can redistribute it and / or modify it
-// under the terms of the GNU Lesser General Public version 2.1 as published
+// This library is free software; you can redistribute it and/or modify it under
+// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
#include <OpenGl_Context.hxx>
-#include <OpenGl_ArbVBO.hxx>
#include <OpenGl_ArbTBO.hxx>
#include <OpenGl_ArbIns.hxx>
#include <OpenGl_ArbDbg.hxx>
-#include <OpenGl_ExtFBO.hxx>
+#include <OpenGl_ArbFBO.hxx>
#include <OpenGl_ExtGS.hxx>
-#include <OpenGl_GlCore20.hxx>
+#include <OpenGl_ArbSamplerObject.hxx>
+#include <OpenGl_ArbTexBindless.hxx>
+#include <OpenGl_GlCore44.hxx>
+#include <OpenGl_FrameBuffer.hxx>
+#include <OpenGl_FrameStats.hxx>
+#include <OpenGl_Sampler.hxx>
#include <OpenGl_ShaderManager.hxx>
+#include <OpenGl_Workspace.hxx>
+#include <OpenGl_AspectFace.hxx>
+#include <Graphic3d_TransformUtils.hxx>
+#include <Graphic3d_RenderingParams.hxx>
#include <Message_Messenger.hxx>
#include <Standard_ProgramError.hxx>
-#if defined(_WIN32)
+IMPLEMENT_STANDARD_RTTIEXT(OpenGl_Context,Standard_Transient)
+
+#if defined(HAVE_EGL)
+ #include <EGL/egl.h>
+ #ifdef _MSC_VER
+ #pragma comment(lib, "libEGL.lib")
+ #endif
+#elif defined(_WIN32)
//
#elif defined(__APPLE__) && !defined(MACOSX_USE_GLX)
#include <dlfcn.h>
+ #if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
+ //
+ #else
+ #include <OpenGL/OpenGL.h>
+ #include <CoreGraphics/CoreGraphics.h>
+ #endif
#else
#include <GL/glx.h> // glXGetProcAddress()
#endif
-// GL_NVX_gpu_memory_info
-#ifndef GL_GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX
- enum
- {
- GL_GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX = 0x9047,
- GL_GPU_MEMORY_INFO_TOTAL_AVAILABLE_MEMORY_NVX = 0x9048,
- GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX = 0x9049,
- GL_GPU_MEMORY_INFO_EVICTION_COUNT_NVX = 0x904A,
- GL_GPU_MEMORY_INFO_EVICTED_MEMORY_NVX = 0x904B
- };
+#ifdef HAVE_GL2PS
+ #include <gl2ps.h>
+ #ifdef _MSC_VER
+ #pragma comment (lib, "gl2ps.lib")
+ #endif
#endif
-IMPLEMENT_STANDARD_HANDLE (OpenGl_Context, Standard_Transient)
-IMPLEMENT_STANDARD_RTTIEXT(OpenGl_Context, Standard_Transient)
-
-//! Make record shorter to retrieve function pointer using variable with same name
-#define FindProcShort(theStruct, theFunc) FindProc(#theFunc, theStruct->theFunc)
namespace
{
static const Handle(OpenGl_Resource) NULL_GL_RESOURCE;
- static const GLdouble OpenGl_DefaultPlaneEq[] = {0.0, 0.0, 0.0, 0.0};
-};
+ static const OpenGl_Mat4 THE_IDENTITY_MATRIX;
+
+ //! Add key-value pair to the dictionary.
+ static void addInfo (TColStd_IndexedDataMapOfStringString& theDict,
+ const TCollection_AsciiString& theKey,
+ const TCollection_AsciiString& theValue)
+ {
+ theDict.ChangeFromIndex (theDict.Add (theKey, theValue)) = theValue;
+ }
+
+ //! Add key-value pair to the dictionary.
+ static void addInfo (TColStd_IndexedDataMapOfStringString& theDict,
+ const TCollection_AsciiString& theKey,
+ const char* theValue)
+ {
+ TCollection_AsciiString aValue (theValue != NULL ? theValue : "");
+ theDict.ChangeFromIndex (theDict.Add (theKey, aValue)) = aValue;
+ }
+}
// =======================================================================
// function : OpenGl_Context
// purpose :
// =======================================================================
OpenGl_Context::OpenGl_Context (const Handle(OpenGl_Caps)& theCaps)
-: core12 (NULL),
- core13 (NULL),
- core14 (NULL),
- core15 (NULL),
- core20 (NULL),
+: core11 (NULL),
+ core11fwd (NULL),
+ core15 (NULL),
+ core15fwd (NULL),
+ core20 (NULL),
+ core20fwd (NULL),
+ core32 (NULL),
+ core32back (NULL),
+ core33 (NULL),
+ core33back (NULL),
+ core41 (NULL),
+ core41back (NULL),
+ core42 (NULL),
+ core42back (NULL),
+ core43 (NULL),
+ core43back (NULL),
+ core44 (NULL),
+ core44back (NULL),
caps (!theCaps.IsNull() ? theCaps : new OpenGl_Caps()),
- arbNPTW(Standard_False),
- arbVBO (NULL),
+#if defined(GL_ES_VERSION_2_0)
+ hasHighp (Standard_False),
+ hasUintIndex(Standard_False),
+ hasTexRGBA8(Standard_False),
+#else
+ hasHighp (Standard_True),
+ hasUintIndex(Standard_True),
+ hasTexRGBA8(Standard_True),
+#endif
+ hasDrawBuffers (OpenGl_FeatureNotAvailable),
+ hasFloatBuffer (OpenGl_FeatureNotAvailable),
+ hasHalfFloatBuffer (OpenGl_FeatureNotAvailable),
+ hasSampleVariables (OpenGl_FeatureNotAvailable),
+ arbDrawBuffers (Standard_False),
+ arbNPTW (Standard_False),
+ arbTexRG (Standard_False),
+ arbTexFloat (Standard_False),
+ arbSamplerObject (NULL),
+ arbTexBindless (NULL),
arbTBO (NULL),
+ arbTboRGB32 (Standard_False),
arbIns (NULL),
arbDbg (NULL),
- extFBO (NULL),
+ arbFBO (NULL),
+ arbFBOBlit (NULL),
+ arbSampleShading (Standard_False),
+ extFragDepth (Standard_False),
+ extDrawBuffers (Standard_False),
extGS (NULL),
extBgra(Standard_False),
extAnis(Standard_False),
extPDS (Standard_False),
atiMem (Standard_False),
nvxMem (Standard_False),
+ oesSampleVariables (Standard_False),
+ oesStdDerivatives (Standard_False),
mySharedResources (new OpenGl_ResourcesMap()),
myDelayed (new OpenGl_DelayReleaseMap()),
- myReleaseQueue (new OpenGl_ResourcesQueue()),
+ myUnusedResources (new OpenGl_ResourcesStack()),
myClippingState (),
myGlLibHandle (NULL),
- myGlCore20 (NULL),
+ myFuncs (new OpenGl_GlFunctions()),
myAnisoMax (1),
+ myTexClamp (GL_CLAMP_TO_EDGE),
myMaxTexDim (1024),
+ myMaxTexCombined (1),
myMaxClipPlanes (6),
+ myMaxMsaaSamples(0),
+ myMaxDrawBuffers (1),
+ myMaxColorAttachments (1),
myGlVerMajor (0),
myGlVerMinor (0),
- myRenderMode (GL_RENDER),
myIsInitialized (Standard_False),
myIsStereoBuffers (Standard_False),
- myDrawBuffer (0)
+ myIsGlNormalizeEnabled (Standard_False),
+ myHasRayTracing (Standard_False),
+ myHasRayTracingTextures (Standard_False),
+ myHasRayTracingAdaptiveSampling (Standard_False),
+ myFrameStats (new OpenGl_FrameStats()),
+#if !defined(GL_ES_VERSION_2_0)
+ myPointSpriteOrig (GL_UPPER_LEFT),
+ myRenderMode (GL_RENDER),
+ myPolygonMode (GL_FILL),
+#else
+ myPointSpriteOrig (0),
+ myRenderMode (0),
+ myPolygonMode (0),
+#endif
+ myToCullBackFaces (false),
+ myReadBuffer (0),
+ myDrawBuffers (1),
+ myDefaultVao (0),
+ myColorMask (true),
+ myIsGlDebugCtx (Standard_False),
+ myResolution (Graphic3d_RenderingParams::THE_DEFAULT_RESOLUTION),
+ myResolutionRatio (1.0f),
+ myLineWidthScale (1.0f),
+ myRenderScale (1.0f),
+ myRenderScaleInv (1.0f)
{
-#if defined(MAC_OS_X_VERSION_10_3) && !defined(MACOSX_USE_GLX)
+ myViewport[0] = 0;
+ myViewport[1] = 0;
+ myViewport[2] = 0;
+ myViewport[3] = 0;
+ myViewportVirt[0] = 0;
+ myViewportVirt[1] = 0;
+ myViewportVirt[2] = 0;
+ myViewportVirt[3] = 0;
+
+ myPolygonOffset.Mode = Aspect_POM_Off;
+ myPolygonOffset.Factor = 0.0f;
+ myPolygonOffset.Units = 0.0f;
+
+ // system-dependent fields
+#if defined(HAVE_EGL)
+ myDisplay = (Aspect_Display )EGL_NO_DISPLAY;
+ myWindow = (Aspect_Drawable )EGL_NO_SURFACE;
+ myGContext = (Aspect_RenderingContext )EGL_NO_CONTEXT;
+#elif defined(_WIN32)
+ myWindow = NULL;
+ myWindowDC = NULL;
+ myGContext = NULL;
+#elif defined(__APPLE__) && !defined(MACOSX_USE_GLX)
// Vendors can not extend functionality on this system
// and developers are limited to OpenGL support provided by Mac OS X SDK.
// We retrieve function pointers from system library
// Notice that GL version / extension availability checks are required
// because function pointers may be available but not functionality itself
// (depends on renderer).
+#if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
+ myGContext = NULL;
+ myGlLibHandle = dlopen ("/System/Library/Frameworks/OpenGLES.framework/OpenGLES", RTLD_LAZY);
+#else
+ myGContext = NULL;
myGlLibHandle = dlopen ("/System/Library/Frameworks/OpenGL.framework/Versions/Current/OpenGL", RTLD_LAZY);
#endif
+#else
+ myDisplay = NULL;
+ myWindow = 0;
+ myGContext = 0;
+#endif
+ memset (myFuncs.operator->(), 0, sizeof(OpenGl_GlFunctions));
myShaderManager = new OpenGl_ShaderManager (this);
}
// release clean up queue
ReleaseDelayed();
+#if !defined(GL_ES_VERSION_2_0)
+ // release default VAO
+ if (myDefaultVao != 0
+ && IsValid()
+ && core32 != NULL)
+ {
+ core32->glDeleteVertexArrays (1, &myDefaultVao);
+ }
+ myDefaultVao = 0;
+#endif
+
+ // release default FBO
+ if (!myDefaultFbo.IsNull())
+ {
+ myDefaultFbo->Release (this);
+ myDefaultFbo.Nullify();
+ }
+
// release shared resources if any
- if (((const Handle(Standard_Transient)& )mySharedResources)->GetRefCount() <= 1)
+ if (mySharedResources->GetRefCount() <= 1)
{
myShaderManager.Nullify();
for (NCollection_DataMap<TCollection_AsciiString, Handle(OpenGl_Resource)>::Iterator anIter (*mySharedResources);
{
anIter.Value()->Release (this);
}
+
+ // release delayed resources added during deletion of shared resources
+ while (!myUnusedResources->IsEmpty())
+ {
+ myUnusedResources->First()->Release (this);
+ myUnusedResources->RemoveFirst();
+ }
}
- else
+ else if (myShaderManager->IsSameContext (this))
{
myShaderManager->SetContext (NULL);
}
myDelayed.Nullify();
if (arbDbg != NULL
- && caps->contextDebug)
+ && myIsGlDebugCtx
+ && IsValid())
{
// reset callback
+ #if !defined(GL_ES_VERSION_2_0)
void* aPtr = NULL;
- glGetPointerv (GL_DEBUG_CALLBACK_USER_PARAM_ARB, &aPtr);
+ glGetPointerv (GL_DEBUG_CALLBACK_USER_PARAM, &aPtr);
if (aPtr == this)
+ #endif
{
- arbDbg->glDebugMessageCallbackARB (NULL, NULL);
+ arbDbg->glDebugMessageCallback (NULL, NULL);
}
+ myIsGlDebugCtx = Standard_False;
}
-
- delete myGlCore20;
- delete arbVBO;
- delete arbTBO;
- delete arbIns;
- delete arbDbg;
- delete extFBO;
- delete extGS;
}
// =======================================================================
-// function : MaxDegreeOfAnisotropy
+// function : forcedRelease
// purpose :
// =======================================================================
-Standard_Integer OpenGl_Context::MaxDegreeOfAnisotropy() const
+void OpenGl_Context::forcedRelease()
{
- return myAnisoMax;
+ ReleaseDelayed();
+ for (NCollection_DataMap<TCollection_AsciiString, Handle(OpenGl_Resource)>::Iterator anIter (*mySharedResources);
+ anIter.More(); anIter.Next())
+ {
+ anIter.Value()->Release (this);
+ }
+ mySharedResources->Clear();
+ myShaderManager->clear();
+ myShaderManager->SetContext (NULL);
+
+ // release delayed resources added during deletion of shared resources
+ while (!myUnusedResources->IsEmpty())
+ {
+ myUnusedResources->First()->Release (this);
+ myUnusedResources->RemoveFirst();
+ }
}
// =======================================================================
-// function : MaxTextureSize
+// function : ResizeViewport
// purpose :
// =======================================================================
-Standard_Integer OpenGl_Context::MaxTextureSize() const
+void OpenGl_Context::ResizeViewport (const Standard_Integer* theRect)
+{
+ core11fwd->glViewport (theRect[0], theRect[1], theRect[2], theRect[3]);
+ myViewport[0] = theRect[0];
+ myViewport[1] = theRect[1];
+ myViewport[2] = theRect[2];
+ myViewport[3] = theRect[3];
+ if (HasRenderScale())
+ {
+ myViewportVirt[0] = Standard_Integer(theRect[0] * myRenderScaleInv);
+ myViewportVirt[1] = Standard_Integer(theRect[1] * myRenderScaleInv);
+ myViewportVirt[2] = Standard_Integer(theRect[2] * myRenderScaleInv);
+ myViewportVirt[3] = Standard_Integer(theRect[3] * myRenderScaleInv);
+ }
+ else
+ {
+ myViewportVirt[0] = theRect[0];
+ myViewportVirt[1] = theRect[1];
+ myViewportVirt[2] = theRect[2];
+ myViewportVirt[3] = theRect[3];
+ }
+}
+
+#if !defined(GL_ES_VERSION_2_0)
+inline Standard_Integer stereoToMonoBuffer (const Standard_Integer theBuffer)
{
- return myMaxTexDim;
+ switch (theBuffer)
+ {
+ case GL_BACK_LEFT:
+ case GL_BACK_RIGHT:
+ return GL_BACK;
+ case GL_FRONT_LEFT:
+ case GL_FRONT_RIGHT:
+ return GL_FRONT;
+ default:
+ return theBuffer;
+ }
}
+#endif
// =======================================================================
-// function : MaxClipPlanes
+// function : SetReadBuffer
// purpose :
// =======================================================================
-Standard_Integer OpenGl_Context::MaxClipPlanes() const
+void OpenGl_Context::SetReadBuffer (const Standard_Integer theReadBuffer)
{
- return myMaxClipPlanes;
+#if !defined(GL_ES_VERSION_2_0)
+ myReadBuffer = !myIsStereoBuffers ? stereoToMonoBuffer (theReadBuffer) : theReadBuffer;
+ if (myReadBuffer < GL_COLOR_ATTACHMENT0
+ && arbFBO != NULL)
+ {
+ arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
+ }
+ ::glReadBuffer (myReadBuffer);
+#else
+ (void )theReadBuffer;
+#endif
}
// =======================================================================
-// function : SetDrawBufferLeft
+// function : SetDrawBuffer
// purpose :
// =======================================================================
-void OpenGl_Context::SetDrawBufferLeft()
+void OpenGl_Context::SetDrawBuffer (const Standard_Integer theDrawBuffer)
{
- switch (myDrawBuffer)
+#if !defined(GL_ES_VERSION_2_0)
+ const Standard_Integer aDrawBuffer = !myIsStereoBuffers ? stereoToMonoBuffer (theDrawBuffer) : theDrawBuffer;
+ if (aDrawBuffer < GL_COLOR_ATTACHMENT0
+ && arbFBO != NULL)
{
- case GL_BACK_RIGHT :
- case GL_BACK :
- glDrawBuffer (GL_BACK_LEFT);
- myDrawBuffer = GL_BACK_LEFT;
- break;
+ arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
+ }
+ ::glDrawBuffer (aDrawBuffer);
- case GL_FRONT_RIGHT :
- case GL_FRONT :
- glDrawBuffer (GL_FRONT_LEFT);
- myDrawBuffer = GL_FRONT_LEFT;
- break;
+ myDrawBuffers.Clear();
- case GL_FRONT_AND_BACK :
- case GL_RIGHT :
- glDrawBuffer (GL_LEFT);
- myDrawBuffer = GL_LEFT;
- break;
+ if (aDrawBuffer != GL_NONE)
+ {
+ myDrawBuffers.SetValue (0, aDrawBuffer);
}
+#else
+ (void )theDrawBuffer;
+#endif
}
// =======================================================================
-// function : SetDrawBufferRight
+// function : SetDrawBuffers
// purpose :
// =======================================================================
-void OpenGl_Context::SetDrawBufferRight()
+void OpenGl_Context::SetDrawBuffers (const Standard_Integer theNb, const Standard_Integer* theDrawBuffers)
{
- switch (myDrawBuffer)
- {
- case GL_BACK_LEFT :
- case GL_BACK :
- glDrawBuffer (GL_BACK_RIGHT);
- myDrawBuffer = GL_BACK_RIGHT;
- break;
+ Standard_ASSERT_RETURN (hasDrawBuffers, "Multiple draw buffers feature is not supported by the context", Standard_ASSERT_DO_NOTHING());
- case GL_FRONT_LEFT :
- case GL_FRONT :
- glDrawBuffer (GL_FRONT_RIGHT);
- myDrawBuffer = GL_FRONT_RIGHT;
- break;
+ myDrawBuffers.Clear();
- case GL_FRONT_AND_BACK :
- case GL_LEFT :
- glDrawBuffer (GL_RIGHT);
- myDrawBuffer = GL_RIGHT;
- break;
+ Standard_Boolean useDefaultFbo = Standard_False;
+ for (Standard_Integer anI = 0; anI < theNb; ++anI)
+ {
+ if (theDrawBuffers[anI] < GL_COLOR_ATTACHMENT0 && theDrawBuffers[anI] != GL_NONE)
+ {
+ useDefaultFbo = Standard_True;
+ }
+ else if (theDrawBuffers[anI] != GL_NONE)
+ {
+ myDrawBuffers.SetValue (anI, theDrawBuffers[anI]);
+ }
+ }
+ if (arbFBO != NULL && useDefaultFbo)
+ {
+ arbFBO->glBindFramebuffer (GL_FRAMEBUFFER, OpenGl_FrameBuffer::NO_FRAMEBUFFER);
}
+
+ myFuncs->glDrawBuffers (theNb, (const GLenum*)theDrawBuffers);
}
// =======================================================================
-// function : SetDrawBufferMono
+// function : SetCullBackFaces
// purpose :
// =======================================================================
-void OpenGl_Context::SetDrawBufferMono()
+void OpenGl_Context::SetCullBackFaces (bool theToEnable)
{
- switch (myDrawBuffer)
+ if (myToCullBackFaces == theToEnable)
{
- case GL_BACK_LEFT :
- case GL_BACK_RIGHT :
- glDrawBuffer (GL_BACK);
- myDrawBuffer = GL_BACK;
- break;
-
- case GL_FRONT_LEFT :
- case GL_FRONT_RIGHT :
- glDrawBuffer (GL_FRONT);
- myDrawBuffer = GL_FRONT;
- break;
+ return;
+ }
- case GL_LEFT :
- case GL_RIGHT :
- glDrawBuffer (GL_FRONT_AND_BACK);
- myDrawBuffer = GL_FRONT_AND_BACK;
- break;
+ myToCullBackFaces = theToEnable;
+ if (theToEnable)
+ {
+ //glCullFace (GL_BACK); GL_BACK by default
+ core11fwd->glEnable (GL_CULL_FACE);
+ }
+ else
+ {
+ core11fwd->glDisable (GL_CULL_FACE);
}
}
// =======================================================================
void OpenGl_Context::FetchState()
{
+#if !defined(GL_ES_VERSION_2_0)
// cache feedback mode state
- glGetIntegerv (GL_RENDER_MODE, &myRenderMode);
+ if (core11 != NULL)
+ {
+ ::glGetIntegerv (GL_RENDER_MODE, &myRenderMode);
+ }
+
+ // cache read buffers state
+ ::glGetIntegerv (GL_READ_BUFFER, &myReadBuffer);
+
+ // cache draw buffers state
+ myDrawBuffers.Clear();
+
+ if (myMaxDrawBuffers == 1)
+ {
+ Standard_Integer aDrawBuffer;
+
+ ::glGetIntegerv (GL_DRAW_BUFFER, &aDrawBuffer);
+
+ if (aDrawBuffer != GL_NONE)
+ {
+ myDrawBuffers.SetValue (0, aDrawBuffer);
+ }
+ }
+ else
+ {
+ Standard_Integer aDrawBuffer;
+
+ for (Standard_Integer anI = 0; anI < myMaxDrawBuffers; ++anI)
+ {
+ ::glGetIntegerv (GL_DRAW_BUFFER0 + anI, &aDrawBuffer);
- // cache draw buffer state
- glGetIntegerv (GL_DRAW_BUFFER, &myDrawBuffer);
+ if (aDrawBuffer != GL_NONE)
+ {
+ myDrawBuffers.SetValue (anI, aDrawBuffer);
+ }
+ }
+ }
+#endif
}
// =======================================================================
{
mySharedResources = theShareCtx->mySharedResources;
myDelayed = theShareCtx->myDelayed;
- myReleaseQueue = theShareCtx->myReleaseQueue;
+ myUnusedResources = theShareCtx->myUnusedResources;
myShaderManager = theShareCtx->myShaderManager;
}
}
// =======================================================================
Standard_Boolean OpenGl_Context::IsCurrent() const
{
-#if defined(_WIN32)
+#if defined(HAVE_EGL)
+ if ((EGLDisplay )myDisplay == EGL_NO_DISPLAY
+ || (EGLSurface )myWindow == EGL_NO_SURFACE
+ || (EGLContext )myGContext == EGL_NO_CONTEXT)
+ {
+ return Standard_False;
+ }
+
+ return (((EGLDisplay )myDisplay == eglGetCurrentDisplay())
+ && ((EGLContext )myGContext == eglGetCurrentContext())
+ && ((EGLSurface )myWindow == eglGetCurrentSurface (EGL_DRAW)));
+#elif defined(_WIN32)
if (myWindowDC == NULL || myGContext == NULL)
{
return Standard_False;
// =======================================================================
Standard_Boolean OpenGl_Context::MakeCurrent()
{
-#if defined(_WIN32)
+#if defined(HAVE_EGL)
+ if ((EGLDisplay )myDisplay == EGL_NO_DISPLAY
+ || (EGLSurface )myWindow == EGL_NO_SURFACE
+ || (EGLContext )myGContext == EGL_NO_CONTEXT)
+ {
+ Standard_ProgramError_Raise_if (myIsInitialized, "OpenGl_Context::Init() should be called before!");
+ return Standard_False;
+ }
+
+ if (eglMakeCurrent ((EGLDisplay )myDisplay, (EGLSurface )myWindow, (EGLSurface )myWindow, (EGLContext )myGContext) != EGL_TRUE)
+ {
+ // if there is no current context it might be impossible to use glGetError() correctly
+ PushMessage (GL_DEBUG_SOURCE_WINDOW_SYSTEM, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH,
+ "eglMakeCurrent() has failed!");
+ myIsInitialized = Standard_False;
+ return Standard_False;
+ }
+#elif defined(_WIN32)
if (myWindowDC == NULL || myGContext == NULL)
{
Standard_ProgramError_Raise_if (myIsInitialized, "OpenGl_Context::Init() should be called before!");
aMsg += (Standard_ExtString )aMsgBuff;
LocalFree (aMsgBuff);
}
- PushMessage (GL_DEBUG_SOURCE_WINDOW_SYSTEM_ARB, GL_DEBUG_TYPE_ERROR_ARB, (unsigned int )anErrorCode, GL_DEBUG_SEVERITY_HIGH_ARB, aMsg);
+ PushMessage (GL_DEBUG_SOURCE_WINDOW_SYSTEM, GL_DEBUG_TYPE_ERROR, (unsigned int )anErrorCode, GL_DEBUG_SEVERITY_HIGH, aMsg);
myIsInitialized = Standard_False;
return Standard_False;
}
if (!glXMakeCurrent ((Display* )myDisplay, (GLXDrawable )myWindow, (GLXContext )myGContext))
{
// if there is no current context it might be impossible to use glGetError() correctly
- PushMessage (GL_DEBUG_SOURCE_WINDOW_SYSTEM_ARB, GL_DEBUG_TYPE_ERROR_ARB, 0, GL_DEBUG_SEVERITY_HIGH_ARB,
+ PushMessage (GL_DEBUG_SOURCE_WINDOW_SYSTEM, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH,
"glXMakeCurrent() has failed!");
myIsInitialized = Standard_False;
return Standard_False;
// =======================================================================
void OpenGl_Context::SwapBuffers()
{
-#if defined(_WIN32)
+#if defined(HAVE_EGL)
+ if ((EGLSurface )myWindow != EGL_NO_SURFACE)
+ {
+ eglSwapBuffers ((EGLDisplay )myDisplay, (EGLSurface )myWindow);
+ }
+#elif defined(_WIN32)
if ((HDC )myWindowDC != NULL)
{
::SwapBuffers ((HDC )myWindowDC);
#endif // __APPLE__
+// =======================================================================
+// function : SetSwapInterval
+// purpose :
+// =======================================================================
+Standard_Boolean OpenGl_Context::SetSwapInterval (const Standard_Integer theInterval)
+{
+#if defined(HAVE_EGL)
+ if (::eglSwapInterval ((EGLDisplay )myDisplay, theInterval) == EGL_TRUE)
+ {
+ return Standard_True;
+ }
+#elif defined(_WIN32)
+ if (myFuncs->wglSwapIntervalEXT != NULL)
+ {
+ myFuncs->wglSwapIntervalEXT (theInterval);
+ return Standard_True;
+ }
+#elif defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
+ //
+#elif defined(__APPLE__)
+ if (::CGLSetParameter (CGLGetCurrentContext(), kCGLCPSwapInterval, &theInterval) == kCGLNoError)
+ {
+ return Standard_True;
+ }
+#else
+ if (theInterval == -1
+ && myFuncs->glXSwapIntervalEXT != NULL)
+ {
+ typedef int (*glXSwapIntervalEXT_t_x)(Display* theDisplay, GLXDrawable theDrawable, int theInterval);
+ glXSwapIntervalEXT_t_x aFuncPtr = (glXSwapIntervalEXT_t_x )myFuncs->glXSwapIntervalEXT;
+ aFuncPtr ((Display* )myDisplay, (GLXDrawable )myWindow, theInterval);
+ return Standard_True;
+ }
+ else if (myFuncs->glXSwapIntervalSGI != NULL)
+ {
+ myFuncs->glXSwapIntervalSGI (theInterval);
+ return Standard_True;
+ }
+#endif
+ return Standard_False;
+}
+
// =======================================================================
// function : findProc
// purpose :
// =======================================================================
void* OpenGl_Context::findProc (const char* theFuncName)
{
-#if defined(_WIN32)
- return wglGetProcAddress (theFuncName);
+#if defined(HAVE_EGL)
+ return (void* )eglGetProcAddress (theFuncName);
+#elif defined(_WIN32)
+ return (void* )wglGetProcAddress (theFuncName);
#elif defined(__APPLE__) && !defined(MACOSX_USE_GLX)
return (myGlLibHandle != NULL) ? dlsym (myGlLibHandle, theFuncName) : NULL;
#else
{
if (theExtName == NULL)
{
+#ifdef OCCT_DEBUG
std::cerr << "CheckExtension called with NULL string!\n";
+#endif
return Standard_False;
}
+#if !defined(GL_ES_VERSION_2_0)
// available since OpenGL 3.0
// and the ONLY way to check extensions with OpenGL 3.1+ core profile
- /**if (IsGlGreaterEqual (3, 0))
+ if (IsGlGreaterEqual (3, 0)
+ && myFuncs->glGetStringi != NULL)
{
GLint anExtNb = 0;
- glGetIntegerv (GL_NUM_EXTENSIONS, &anExtNb);
+ ::glGetIntegerv (GL_NUM_EXTENSIONS, &anExtNb);
+ const size_t anExtNameLen = strlen (theExtName);
for (GLint anIter = 0; anIter < anExtNb; ++anIter)
{
- const char* anExtension = (const char* )core30->glGetStringi (GL_EXTENSIONS, (GLuint )anIter);
- if (anExtension[anExtNameLen] == '\0' &&
- strncmp (anExtension, theExtName, anExtNameLen) == 0)
+ const char* anExtension = (const char* )myFuncs->glGetStringi (GL_EXTENSIONS, (GLuint )anIter);
+ const size_t aTestExtNameLen = strlen (anExtension);
+ if (aTestExtNameLen == anExtNameLen
+ && strncmp (anExtension, theExtName, anExtNameLen) == 0)
{
return Standard_True;
}
}
return Standard_False;
- }*/
+ }
+#endif
// use old way with huge string for all extensions
const char* anExtString = (const char* )glGetString (GL_EXTENSIONS);
// function : Init
// purpose :
// =======================================================================
-Standard_Boolean OpenGl_Context::Init()
+Standard_Boolean OpenGl_Context::Init (const Standard_Boolean theIsCoreProfile)
{
if (myIsInitialized)
{
return Standard_True;
}
-#if defined(_WIN32)
+#if defined(HAVE_EGL)
+ myDisplay = (Aspect_Display )eglGetCurrentDisplay();
+ myGContext = (Aspect_RenderingContext )eglGetCurrentContext();
+ myWindow = (Aspect_Drawable )eglGetCurrentSurface(EGL_DRAW);
+#elif defined(_WIN32)
myWindowDC = (Aspect_Handle )wglGetCurrentDC();
myGContext = (Aspect_RenderingContext )wglGetCurrentContext();
#else
return Standard_False;
}
- init();
+ init (theIsCoreProfile);
myIsInitialized = Standard_True;
return Standard_True;
}
// function : Init
// purpose :
// =======================================================================
-#if defined(_WIN32)
+#if defined(HAVE_EGL)
+Standard_Boolean OpenGl_Context::Init (const Aspect_Drawable theEglSurface,
+ const Aspect_Display theEglDisplay,
+ const Aspect_RenderingContext theEglContext,
+ const Standard_Boolean theIsCoreProfile)
+#elif defined(_WIN32)
Standard_Boolean OpenGl_Context::Init (const Aspect_Handle theWindow,
const Aspect_Handle theWindowDC,
- const Aspect_RenderingContext theGContext)
+ const Aspect_RenderingContext theGContext,
+ const Standard_Boolean theIsCoreProfile)
#elif defined(__APPLE__) && !defined(MACOSX_USE_GLX)
-Standard_Boolean OpenGl_Context::Init (const void* theGContext)
+
+#if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
+Standard_Boolean OpenGl_Context::Init (EAGLContext* theGContext,
+ const Standard_Boolean theIsCoreProfile)
+#else
+Standard_Boolean OpenGl_Context::Init (NSOpenGLContext* theGContext,
+ const Standard_Boolean theIsCoreProfile)
+#endif
+
#else
Standard_Boolean OpenGl_Context::Init (const Aspect_Drawable theWindow,
const Aspect_Display theDisplay,
- const Aspect_RenderingContext theGContext)
+ const Aspect_RenderingContext theGContext,
+ const Standard_Boolean theIsCoreProfile)
#endif
{
Standard_ProgramError_Raise_if (myIsInitialized, "OpenGl_Context::Init() should be called only once!");
-#if defined(_WIN32)
+#if defined(HAVE_EGL)
+ myWindow = theEglSurface;
+ myGContext = theEglContext;
+ myDisplay = theEglDisplay;
+#elif defined(_WIN32)
myWindow = theWindow;
myGContext = theGContext;
myWindowDC = theWindowDC;
#elif defined(__APPLE__) && !defined(MACOSX_USE_GLX)
- myGContext = (void* )theGContext;
+ myGContext = theGContext;
#else
myWindow = theWindow;
myGContext = theGContext;
return Standard_False;
}
- init();
+ init (theIsCoreProfile);
myIsInitialized = Standard_True;
return Standard_True;
}
// function : ResetErrors
// purpose :
// =======================================================================
-void OpenGl_Context::ResetErrors()
+bool OpenGl_Context::ResetErrors (const bool theToPrintErrors)
{
- while (glGetError() != GL_NO_ERROR)
+ int aPrevErr = 0;
+ int anErr = ::glGetError();
+ const bool hasError = anErr != GL_NO_ERROR;
+ if (!theToPrintErrors)
{
- //
+ for (; anErr != GL_NO_ERROR && aPrevErr != anErr; aPrevErr = anErr, anErr = ::glGetError())
+ {
+ //
+ }
+ return hasError;
+ }
+
+ for (; anErr != GL_NO_ERROR && aPrevErr != anErr; aPrevErr = anErr, anErr = ::glGetError())
+ {
+ TCollection_ExtendedString anErrId;
+ switch (anErr)
+ {
+ case GL_INVALID_ENUM: anErrId = "GL_INVALID_ENUM"; break;
+ case GL_INVALID_VALUE: anErrId = "GL_INVALID_VALUE"; break;
+ case GL_INVALID_OPERATION: anErrId = "GL_INVALID_OPERATION"; break;
+ #ifdef GL_STACK_OVERFLOW
+ case GL_STACK_OVERFLOW: anErrId = "GL_STACK_OVERFLOW"; break;
+ case GL_STACK_UNDERFLOW: anErrId = "GL_STACK_UNDERFLOW"; break;
+ #endif
+ case GL_OUT_OF_MEMORY: anErrId = "GL_OUT_OF_MEMORY"; break;
+ case GL_INVALID_FRAMEBUFFER_OPERATION:
+ anErrId = "GL_INVALID_FRAMEBUFFER_OPERATION";
+ break;
+ default:
+ anErrId = TCollection_ExtendedString("#") + anErr;
+ break;
+ }
+
+ const TCollection_ExtendedString aMsg = TCollection_ExtendedString ("Unhandled GL error: ") + anErrId;
+ PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_OTHER, 0, GL_DEBUG_SEVERITY_LOW, aMsg);
}
+ return hasError;
}
// =======================================================================
-// function : readGlVersion
+// function : ReadGlVersion
// purpose :
// =======================================================================
-void OpenGl_Context::readGlVersion()
+void OpenGl_Context::ReadGlVersion (Standard_Integer& theGlVerMajor,
+ Standard_Integer& theGlVerMinor)
{
// reset values
- myGlVerMajor = 0;
- myGlVerMinor = 0;
+ theGlVerMajor = 0;
+ theGlVerMinor = 0;
- // available since OpenGL 3.0
+#ifdef GL_MAJOR_VERSION
+ // available since OpenGL 3.0 and OpenGL 3.0 ES
GLint aMajor = 0, aMinor = 0;
glGetIntegerv (GL_MAJOR_VERSION, &aMajor);
glGetIntegerv (GL_MINOR_VERSION, &aMinor);
// glGetError() sometimes does not report an error here even if
// GL does not know GL_MAJOR_VERSION and GL_MINOR_VERSION constants.
- // This happens on some rendereres like e.g. Cygwin MESA.
+ // This happens on some renderers like e.g. Cygwin MESA.
// Thus checking additionally if GL has put anything to
// the output variables.
- if (glGetError() == GL_NO_ERROR && aMajor != 0 && aMinor != 0)
+ if (::glGetError() == GL_NO_ERROR && aMajor != 0 && aMinor != 0)
{
- myGlVerMajor = aMajor;
- myGlVerMinor = aMinor;
+ theGlVerMajor = aMajor;
+ theGlVerMinor = aMinor;
return;
}
- ResetErrors();
+ for (GLenum anErr = ::glGetError(), aPrevErr = GL_NO_ERROR;; aPrevErr = anErr, anErr = ::glGetError())
+ {
+ if (anErr == GL_NO_ERROR
+ || anErr == aPrevErr)
+ {
+ break;
+ }
+ }
+#endif
// Read version string.
- // Notice that only first two numbers splitted by point '2.1 XXXXX' are significant.
+ // Notice that only first two numbers split by point '2.1 XXXXX' are significant.
// Following trash (after space) is vendor-specific.
// New drivers also returns micro version of GL like '3.3.0' which has no meaning
// and should be considered as vendor-specific too.
return;
}
+//#if defined(GL_ES_VERSION_2_0)
+ // skip "OpenGL ES-** " section
+ for (; *aVerStr != '\0'; ++aVerStr)
+ {
+ if (*aVerStr >= '0' && *aVerStr <= '9')
+ {
+ break;
+ }
+ }
+//#endif
+
// parse string for major number
char aMajorStr[32];
char aMinorStr[32];
aMinorStr[aMinIter] = '\0';
// read numbers
- myGlVerMajor = atoi (aMajorStr);
- myGlVerMinor = atoi (aMinorStr);
+ theGlVerMajor = atoi (aMajorStr);
+ theGlVerMinor = atoi (aMinorStr);
- if (myGlVerMajor <= 0)
+ if (theGlVerMajor <= 0)
{
- myGlVerMajor = 0;
- myGlVerMinor = 0;
+ theGlVerMajor = 0;
+ theGlVerMinor = 0;
}
}
static Standard_CString THE_DBGMSG_UNKNOWN = "UNKNOWN";
static Standard_CString THE_DBGMSG_SOURCES[] =
{
- ".OpenGL", // GL_DEBUG_SOURCE_API_ARB
- ".WinSystem", // GL_DEBUG_SOURCE_WINDOW_SYSTEM_ARB
- ".GLSL", // GL_DEBUG_SOURCE_SHADER_COMPILER_ARB
- ".3rdParty", // GL_DEBUG_SOURCE_THIRD_PARTY_ARB
- "", // GL_DEBUG_SOURCE_APPLICATION_ARB
- ".Other" // GL_DEBUG_SOURCE_OTHER_ARB
+ ".OpenGL", // GL_DEBUG_SOURCE_API
+ ".WinSystem", // GL_DEBUG_SOURCE_WINDOW_SYSTEM
+ ".GLSL", // GL_DEBUG_SOURCE_SHADER_COMPILER
+ ".3rdParty", // GL_DEBUG_SOURCE_THIRD_PARTY
+ "", // GL_DEBUG_SOURCE_APPLICATION
+ ".Other" // GL_DEBUG_SOURCE_OTHER
};
static Standard_CString THE_DBGMSG_TYPES[] =
{
- "Error", // GL_DEBUG_TYPE_ERROR_ARB
- "Deprecated", // GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB
- "Undef. behavior", // GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB
- "Portability", // GL_DEBUG_TYPE_PORTABILITY_ARB
- "Performance", // GL_DEBUG_TYPE_PERFORMANCE_ARB
- "Other" // GL_DEBUG_TYPE_OTHER_ARB
+ "Error", // GL_DEBUG_TYPE_ERROR
+ "Deprecated", // GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR
+ "Undef. behavior", // GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR
+ "Portability", // GL_DEBUG_TYPE_PORTABILITY
+ "Performance", // GL_DEBUG_TYPE_PERFORMANCE
+ "Other" // GL_DEBUG_TYPE_OTHER
};
-static Standard_CString THE_DBGMSG_SEV_HIGH = "High"; // GL_DEBUG_SEVERITY_HIGH_ARB
-static Standard_CString THE_DBGMSG_SEV_MEDIUM = "Medium"; // GL_DEBUG_SEVERITY_MEDIUM_ARB
-static Standard_CString THE_DBGMSG_SEV_LOW = "Low"; // GL_DEBUG_SEVERITY_LOW_ARB
+static Standard_CString THE_DBGMSG_SEV_HIGH = "High"; // GL_DEBUG_SEVERITY_HIGH
+static Standard_CString THE_DBGMSG_SEV_MEDIUM = "Medium"; // GL_DEBUG_SEVERITY_MEDIUM
+static Standard_CString THE_DBGMSG_SEV_LOW = "Low"; // GL_DEBUG_SEVERITY_LOW
//! Callback for GL_ARB_debug_output extension
static void APIENTRY debugCallbackWrap(unsigned int theSource,
const unsigned int theSeverity,
const TCollection_ExtendedString& theMessage)
{
- //OpenGl_Context* aCtx = (OpenGl_Context* )theUserParam;
- Standard_CString& aSrc = (theSource >= GL_DEBUG_SOURCE_API_ARB
- && theSource <= GL_DEBUG_SOURCE_OTHER_ARB)
- ? THE_DBGMSG_SOURCES[theSource - GL_DEBUG_SOURCE_API_ARB]
+ if (caps->suppressExtraMsg
+ && theSource >= GL_DEBUG_SOURCE_API
+ && theSource <= GL_DEBUG_SOURCE_OTHER
+ && myFilters[theSource - GL_DEBUG_SOURCE_API].Contains (theId))
+ {
+ return;
+ }
+
+ Standard_CString& aSrc = (theSource >= GL_DEBUG_SOURCE_API
+ && theSource <= GL_DEBUG_SOURCE_OTHER)
+ ? THE_DBGMSG_SOURCES[theSource - GL_DEBUG_SOURCE_API]
: THE_DBGMSG_UNKNOWN;
- Standard_CString& aType = (theType >= GL_DEBUG_TYPE_ERROR_ARB
- && theType <= GL_DEBUG_TYPE_OTHER_ARB)
- ? THE_DBGMSG_TYPES[theType - GL_DEBUG_TYPE_ERROR_ARB]
+ Standard_CString& aType = (theType >= GL_DEBUG_TYPE_ERROR
+ && theType <= GL_DEBUG_TYPE_OTHER)
+ ? THE_DBGMSG_TYPES[theType - GL_DEBUG_TYPE_ERROR]
: THE_DBGMSG_UNKNOWN;
- Standard_CString& aSev = theSeverity == GL_DEBUG_SEVERITY_HIGH_ARB
+ Standard_CString& aSev = theSeverity == GL_DEBUG_SEVERITY_HIGH
? THE_DBGMSG_SEV_HIGH
- : (theSeverity == GL_DEBUG_SEVERITY_MEDIUM_ARB
+ : (theSeverity == GL_DEBUG_SEVERITY_MEDIUM
? THE_DBGMSG_SEV_MEDIUM
: THE_DBGMSG_SEV_LOW);
- Message_Gravity aGrav = theSeverity == GL_DEBUG_SEVERITY_HIGH_ARB
+ Message_Gravity aGrav = theSeverity == GL_DEBUG_SEVERITY_HIGH
? Message_Alarm
- : (theSeverity == GL_DEBUG_SEVERITY_MEDIUM_ARB
+ : (theSeverity == GL_DEBUG_SEVERITY_MEDIUM
? Message_Warning
: Message_Info);
aMsg += " | Severity: "; aMsg += aSev;
aMsg += " | Message:\n ";
aMsg += theMessage;
-
Messenger()->Send (aMsg, aGrav);
}
// =======================================================================
-// function : init
+// function : ExcludeMessage
// purpose :
-// =======================================================================
-void OpenGl_Context::init()
+// ======================================================================
+Standard_Boolean OpenGl_Context::ExcludeMessage (const unsigned int theSource,
+ const unsigned int theId)
{
- // read version
- readGlVersion();
+ return theSource >= GL_DEBUG_SOURCE_API
+ && theSource <= GL_DEBUG_SOURCE_OTHER
+ && myFilters[theSource - GL_DEBUG_SOURCE_API].Add (theId);
+}
- arbNPTW = CheckExtension ("GL_ARB_texture_non_power_of_two");
- extBgra = CheckExtension ("GL_EXT_bgra");
- extAnis = CheckExtension ("GL_EXT_texture_filter_anisotropic");
- extPDS = CheckExtension ("GL_EXT_packed_depth_stencil");
- atiMem = CheckExtension ("GL_ATI_meminfo");
- nvxMem = CheckExtension ("GL_NVX_gpu_memory_info");
+// =======================================================================
+// function : IncludeMessage
+// purpose :
+// ======================================================================
+Standard_Boolean OpenGl_Context::IncludeMessage (const unsigned int theSource,
+ const unsigned int theId)
+{
+ return theSource >= GL_DEBUG_SOURCE_API
+ && theSource <= GL_DEBUG_SOURCE_OTHER
+ && myFilters[theSource - GL_DEBUG_SOURCE_API].Remove (theId);
+}
- // get number of maximum clipping planes
- glGetIntegerv (GL_MAX_CLIP_PLANES, &myMaxClipPlanes);
- glGetIntegerv (GL_MAX_TEXTURE_SIZE, &myMaxTexDim);
+// =======================================================================
+// function : checkWrongVersion
+// purpose :
+// ======================================================================
+void OpenGl_Context::checkWrongVersion (const Standard_Integer theGlVerMajor,
+ const Standard_Integer theGlVerMinor)
+{
+ if (!IsGlGreaterEqual (theGlVerMajor, theGlVerMinor))
+ {
+ return;
+ }
- GLint aStereo;
- glGetIntegerv (GL_STEREO, &aStereo);
- myIsStereoBuffers = aStereo == 1;
+ TCollection_ExtendedString aMsg = TCollection_ExtendedString()
+ + "Error! OpenGL context reports version "
+ + myGlVerMajor + "." + myGlVerMinor
+ + " but does not export required functions for "
+ + theGlVerMajor + "." + theGlVerMinor;
+ PushMessage (GL_DEBUG_SOURCE_APPLICATION,
+ GL_DEBUG_TYPE_ERROR,
+ 0,
+ GL_DEBUG_SEVERITY_HIGH,
+ aMsg);
+}
- if (extAnis)
+// =======================================================================
+// function : init
+// purpose :
+// =======================================================================
+void OpenGl_Context::init (const Standard_Boolean theIsCoreProfile)
+{
+ // read version
+ myGlVerMajor = 0;
+ myGlVerMinor = 0;
+ myMaxMsaaSamples = 0;
+ myMaxDrawBuffers = 1;
+ myMaxColorAttachments = 1;
+ ReadGlVersion (myGlVerMajor, myGlVerMinor);
+ myVendor = (const char* )::glGetString (GL_VENDOR);
+ if (!caps->ffpEnable
+ && !IsGlGreaterEqual (2, 0))
{
- glGetIntegerv (GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &myAnisoMax);
+ caps->ffpEnable = true;
+ TCollection_ExtendedString aMsg =
+ TCollection_ExtendedString("OpenGL driver is too old! Context info:\n")
+ + " Vendor: " + (const char* )::glGetString (GL_VENDOR) + "\n"
+ + " Renderer: " + (const char* )::glGetString (GL_RENDERER) + "\n"
+ + " Version: " + (const char* )::glGetString (GL_VERSION) + "\n"
+ + " Fallback using deprecated fixed-function pipeline.\n"
+ + " Visualization might work incorrectly.\n"
+ " Consider upgrading the graphics driver.";
+ PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_HIGH, aMsg);
}
- myClippingState.Init (myMaxClipPlanes);
+#if defined(GL_ES_VERSION_2_0)
+ (void )theIsCoreProfile;
+ const bool isCoreProfile = false;
+#else
- // initialize debug context extension
- if (CheckExtension ("GL_ARB_debug_output"))
+ if (myVendor.Search ("NVIDIA") != -1)
{
- arbDbg = new OpenGl_ArbDbg();
- memset (arbDbg, 0, sizeof(OpenGl_ArbDbg)); // nullify whole structure
- if (!FindProcShort (arbDbg, glDebugMessageControlARB)
- || !FindProcShort (arbDbg, glDebugMessageInsertARB)
- || !FindProcShort (arbDbg, glDebugMessageCallbackARB)
- || !FindProcShort (arbDbg, glGetDebugMessageLogARB))
- {
- delete arbDbg;
- arbDbg = NULL;
- }
- if (arbDbg != NULL
- && caps->contextDebug)
- {
- // setup default callback
- arbDbg->glDebugMessageCallbackARB (debugCallbackWrap, this);
- #ifdef DEB
- glEnable (GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB);
- #endif
- }
+ // Buffer detailed info: Buffer object 1 (bound to GL_ARRAY_BUFFER_ARB, usage hint is GL_STATIC_DRAW)
+ // will use VIDEO memory as the source for buffer object operations.
+ ExcludeMessage (GL_DEBUG_SOURCE_API, 131185);
}
-
- // initialize VBO extension (ARB)
- if (CheckExtension ("GL_ARB_vertex_buffer_object"))
+ if (IsGlGreaterEqual (3, 0))
{
- arbVBO = new OpenGl_ArbVBO();
- memset (arbVBO, 0, sizeof(OpenGl_ArbVBO)); // nullify whole structure
- if (!FindProcShort (arbVBO, glGenBuffersARB)
- || !FindProcShort (arbVBO, glBindBufferARB)
- || !FindProcShort (arbVBO, glBufferDataARB)
- || !FindProcShort (arbVBO, glDeleteBuffersARB))
- {
- delete arbVBO;
- arbVBO = NULL;
- }
+ // retrieve auxiliary function in advance
+ FindProc ("glGetStringi", myFuncs->glGetStringi);
}
- // initialize TBO extension (ARB)
- if (CheckExtension ("GL_ARB_texture_buffer_object"))
+ bool isCoreProfile = false;
+ if (IsGlGreaterEqual (3, 2))
{
- arbTBO = new OpenGl_ArbTBO();
- memset (arbTBO, 0, sizeof(OpenGl_ArbTBO)); // nullify whole structure
- if (!FindProcShort (arbTBO, glTexBufferARB))
+ isCoreProfile = (theIsCoreProfile == Standard_True);
+
+ // detect Core profile
+ if (!isCoreProfile)
{
- delete arbTBO;
- arbTBO = NULL;
+ GLint aProfile = 0;
+ ::glGetIntegerv (GL_CONTEXT_PROFILE_MASK, &aProfile);
+ isCoreProfile = (aProfile & GL_CONTEXT_CORE_PROFILE_BIT) != 0;
}
}
+#endif
- // initialize hardware instancing extension (ARB)
- if (CheckExtension ("GL_ARB_draw_instanced"))
+ core11 = NULL;
+ if (!isCoreProfile)
{
- arbIns = new OpenGl_ArbIns();
- memset (arbIns, 0, sizeof(OpenGl_ArbIns)); // nullify whole structure
- if (!FindProcShort (arbIns, glDrawArraysInstancedARB)
- || !FindProcShort (arbIns, glDrawElementsInstancedARB))
- {
- delete arbIns;
- arbIns = NULL;
- }
+ core11 = (OpenGl_GlCore11* )(&(*myFuncs));
}
+ core11fwd = (OpenGl_GlCore11Fwd* )(&(*myFuncs));
+ core15 = NULL;
+ core15fwd = NULL;
+ core20 = NULL;
+ core20fwd = NULL;
+ core32 = NULL;
+ core32back = NULL;
+ core33 = NULL;
+ core33back = NULL;
+ core41 = NULL;
+ core41back = NULL;
+ core42 = NULL;
+ core42back = NULL;
+ core43 = NULL;
+ core43back = NULL;
+ core44 = NULL;
+ core44back = NULL;
+ arbTBO = NULL;
+ arbTboRGB32 = Standard_False;
+ arbIns = NULL;
+ arbDbg = NULL;
+ arbFBO = NULL;
+ arbFBOBlit = NULL;
+ extGS = NULL;
+ myDefaultVao = 0;
+
+ //! Make record shorter to retrieve function pointer using variable with same name
+ #define FindProcShort(theFunc) FindProc(#theFunc, myFuncs->theFunc)
+
+#if defined(GL_ES_VERSION_2_0)
+
+ hasTexRGBA8 = IsGlGreaterEqual (3, 0)
+ || CheckExtension ("GL_OES_rgb8_rgba8");
+ // NPOT textures has limited support within OpenGL ES 2.0
+ // which are relaxed by OpenGL ES 3.0 or some extensions
+ //arbNPTW = IsGlGreaterEqual (3, 0)
+ // || CheckExtension ("GL_OES_texture_npot")
+ // || CheckExtension ("GL_NV_texture_npot_2D_mipmap");
+ arbNPTW = Standard_True;
+ arbTexRG = IsGlGreaterEqual (3, 0)
+ || CheckExtension ("GL_EXT_texture_rg");
+ extBgra = CheckExtension ("GL_EXT_texture_format_BGRA8888");
+ extAnis = CheckExtension ("GL_EXT_texture_filter_anisotropic");
+ extPDS = IsGlGreaterEqual (3, 0)
+ || CheckExtension ("GL_OES_packed_depth_stencil");
- // initialize FBO extension (EXT)
- if (CheckExtension ("GL_EXT_framebuffer_object"))
+ core11fwd = (OpenGl_GlCore11Fwd* )(&(*myFuncs));
+ if (IsGlGreaterEqual (2, 0))
{
- extFBO = new OpenGl_ExtFBO();
- memset (extFBO, 0, sizeof(OpenGl_ExtFBO)); // nullify whole structure
- if (!FindProcShort (extFBO, glGenFramebuffersEXT)
- || !FindProcShort (extFBO, glDeleteFramebuffersEXT)
- || !FindProcShort (extFBO, glBindFramebufferEXT)
- || !FindProcShort (extFBO, glFramebufferTexture2DEXT)
- || !FindProcShort (extFBO, glCheckFramebufferStatusEXT)
- || !FindProcShort (extFBO, glGenRenderbuffersEXT)
- || !FindProcShort (extFBO, glDeleteRenderbuffersEXT)
- || !FindProcShort (extFBO, glBindRenderbufferEXT)
- || !FindProcShort (extFBO, glRenderbufferStorageEXT)
- || !FindProcShort (extFBO, glFramebufferRenderbufferEXT)
- || !FindProcShort (extFBO, glGenerateMipmapEXT))
- {
- delete extFBO;
- extFBO = NULL;
- }
+ // enable compatible functions
+ core20 = (OpenGl_GlCore20* )(&(*myFuncs));
+ core20fwd = (OpenGl_GlCore20Fwd* )(&(*myFuncs));
+ core15fwd = (OpenGl_GlCore15Fwd* )(&(*myFuncs));
+ arbFBO = (OpenGl_ArbFBO* )(&(*myFuncs));
}
-
- // initialize GS extension (EXT)
- if (CheckExtension ("GL_EXT_geometry_shader4"))
- {
- extGS = new OpenGl_ExtGS();
- memset (extGS, 0, sizeof(OpenGl_ExtGS)); // nullify whole structure
- if (!FindProcShort (extGS, glProgramParameteriEXT))
- {
- delete extGS;
- extGS = NULL;
- }
- }
-
- myGlCore20 = new OpenGl_GlCore20();
- memset (myGlCore20, 0, sizeof(OpenGl_GlCore20)); // nullify whole structure
-
- // Check if OpenGL 1.2 core functionality is actually present
- Standard_Boolean hasGlCore12 = IsGlGreaterEqual (1, 2)
- && FindProcShort (myGlCore20, glBlendColor)
- && FindProcShort (myGlCore20, glBlendEquation)
- && FindProcShort (myGlCore20, glDrawRangeElements)
- && FindProcShort (myGlCore20, glTexImage3D)
- && FindProcShort (myGlCore20, glTexSubImage3D)
- && FindProcShort (myGlCore20, glCopyTexSubImage3D);
-
- // Check if OpenGL 1.3 core functionality is actually present
- Standard_Boolean hasGlCore13 = IsGlGreaterEqual (1, 3)
- && FindProcShort (myGlCore20, glActiveTexture)
- && FindProcShort (myGlCore20, glSampleCoverage)
- && FindProcShort (myGlCore20, glCompressedTexImage3D)
- && FindProcShort (myGlCore20, glCompressedTexImage2D)
- && FindProcShort (myGlCore20, glCompressedTexImage1D)
- && FindProcShort (myGlCore20, glCompressedTexSubImage3D)
- && FindProcShort (myGlCore20, glCompressedTexSubImage2D)
- && FindProcShort (myGlCore20, glCompressedTexSubImage1D)
- && FindProcShort (myGlCore20, glGetCompressedTexImage)
- // deprecated
- && FindProcShort (myGlCore20, glClientActiveTexture)
- && FindProcShort (myGlCore20, glMultiTexCoord1d)
- && FindProcShort (myGlCore20, glMultiTexCoord1dv)
- && FindProcShort (myGlCore20, glMultiTexCoord1f)
- && FindProcShort (myGlCore20, glMultiTexCoord1fv)
- && FindProcShort (myGlCore20, glMultiTexCoord1i)
- && FindProcShort (myGlCore20, glMultiTexCoord1iv)
- && FindProcShort (myGlCore20, glMultiTexCoord1s)
- && FindProcShort (myGlCore20, glMultiTexCoord1sv)
- && FindProcShort (myGlCore20, glMultiTexCoord2d)
- && FindProcShort (myGlCore20, glMultiTexCoord2dv)
- && FindProcShort (myGlCore20, glMultiTexCoord2f)
- && FindProcShort (myGlCore20, glMultiTexCoord2fv)
- && FindProcShort (myGlCore20, glMultiTexCoord2i)
- && FindProcShort (myGlCore20, glMultiTexCoord2iv)
- && FindProcShort (myGlCore20, glMultiTexCoord2s)
- && FindProcShort (myGlCore20, glMultiTexCoord2sv)
- && FindProcShort (myGlCore20, glMultiTexCoord3d)
- && FindProcShort (myGlCore20, glMultiTexCoord3dv)
- && FindProcShort (myGlCore20, glMultiTexCoord3f)
- && FindProcShort (myGlCore20, glMultiTexCoord3fv)
- && FindProcShort (myGlCore20, glMultiTexCoord3i)
- && FindProcShort (myGlCore20, glMultiTexCoord3iv)
- && FindProcShort (myGlCore20, glMultiTexCoord3s)
- && FindProcShort (myGlCore20, glMultiTexCoord3sv)
- && FindProcShort (myGlCore20, glMultiTexCoord4d)
- && FindProcShort (myGlCore20, glMultiTexCoord4dv)
- && FindProcShort (myGlCore20, glMultiTexCoord4f)
- && FindProcShort (myGlCore20, glMultiTexCoord4fv)
- && FindProcShort (myGlCore20, glMultiTexCoord4i)
- && FindProcShort (myGlCore20, glMultiTexCoord4iv)
- && FindProcShort (myGlCore20, glMultiTexCoord4s)
- && FindProcShort (myGlCore20, glMultiTexCoord4sv)
- && FindProcShort (myGlCore20, glLoadTransposeMatrixf)
- && FindProcShort (myGlCore20, glLoadTransposeMatrixd)
- && FindProcShort (myGlCore20, glMultTransposeMatrixf)
- && FindProcShort (myGlCore20, glMultTransposeMatrixd);
-
- // Check if OpenGL 1.4 core functionality is actually present
- Standard_Boolean hasGlCore14 = IsGlGreaterEqual (1, 4)
- && FindProcShort (myGlCore20, glBlendFuncSeparate)
- && FindProcShort (myGlCore20, glMultiDrawArrays)
- && FindProcShort (myGlCore20, glMultiDrawElements)
- && FindProcShort (myGlCore20, glPointParameterf)
- && FindProcShort (myGlCore20, glPointParameterfv)
- && FindProcShort (myGlCore20, glPointParameteri)
- && FindProcShort (myGlCore20, glPointParameteriv);
-
- // Check if OpenGL 1.5 core functionality is actually present
- Standard_Boolean hasGlCore15 = IsGlGreaterEqual (1, 5)
- && FindProcShort (myGlCore20, glGenQueries)
- && FindProcShort (myGlCore20, glDeleteQueries)
- && FindProcShort (myGlCore20, glIsQuery)
- && FindProcShort (myGlCore20, glBeginQuery)
- && FindProcShort (myGlCore20, glEndQuery)
- && FindProcShort (myGlCore20, glGetQueryiv)
- && FindProcShort (myGlCore20, glGetQueryObjectiv)
- && FindProcShort (myGlCore20, glGetQueryObjectuiv)
- && FindProcShort (myGlCore20, glBindBuffer)
- && FindProcShort (myGlCore20, glDeleteBuffers)
- && FindProcShort (myGlCore20, glGenBuffers)
- && FindProcShort (myGlCore20, glIsBuffer)
- && FindProcShort (myGlCore20, glBufferData)
- && FindProcShort (myGlCore20, glBufferSubData)
- && FindProcShort (myGlCore20, glGetBufferSubData)
- && FindProcShort (myGlCore20, glMapBuffer)
- && FindProcShort (myGlCore20, glUnmapBuffer)
- && FindProcShort (myGlCore20, glGetBufferParameteriv)
- && FindProcShort (myGlCore20, glGetBufferPointerv);
-
- // Check if OpenGL 2.0 core functionality is actually present
- Standard_Boolean hasGlCore20 = IsGlGreaterEqual (2, 0)
- && FindProcShort (myGlCore20, glBlendEquationSeparate)
- && FindProcShort (myGlCore20, glDrawBuffers)
- && FindProcShort (myGlCore20, glStencilOpSeparate)
- && FindProcShort (myGlCore20, glStencilFuncSeparate)
- && FindProcShort (myGlCore20, glStencilMaskSeparate)
- && FindProcShort (myGlCore20, glAttachShader)
- && FindProcShort (myGlCore20, glBindAttribLocation)
- && FindProcShort (myGlCore20, glCompileShader)
- && FindProcShort (myGlCore20, glCreateProgram)
- && FindProcShort (myGlCore20, glCreateShader)
- && FindProcShort (myGlCore20, glDeleteProgram)
- && FindProcShort (myGlCore20, glDeleteShader)
- && FindProcShort (myGlCore20, glDetachShader)
- && FindProcShort (myGlCore20, glDisableVertexAttribArray)
- && FindProcShort (myGlCore20, glEnableVertexAttribArray)
- && FindProcShort (myGlCore20, glGetActiveAttrib)
- && FindProcShort (myGlCore20, glGetActiveUniform)
- && FindProcShort (myGlCore20, glGetAttachedShaders)
- && FindProcShort (myGlCore20, glGetAttribLocation)
- && FindProcShort (myGlCore20, glGetProgramiv)
- && FindProcShort (myGlCore20, glGetProgramInfoLog)
- && FindProcShort (myGlCore20, glGetShaderiv)
- && FindProcShort (myGlCore20, glGetShaderInfoLog)
- && FindProcShort (myGlCore20, glGetShaderSource)
- && FindProcShort (myGlCore20, glGetUniformLocation)
- && FindProcShort (myGlCore20, glGetUniformfv)
- && FindProcShort (myGlCore20, glGetUniformiv)
- && FindProcShort (myGlCore20, glGetVertexAttribdv)
- && FindProcShort (myGlCore20, glGetVertexAttribfv)
- && FindProcShort (myGlCore20, glGetVertexAttribiv)
- && FindProcShort (myGlCore20, glGetVertexAttribPointerv)
- && FindProcShort (myGlCore20, glIsProgram)
- && FindProcShort (myGlCore20, glIsShader)
- && FindProcShort (myGlCore20, glLinkProgram)
- && FindProcShort (myGlCore20, glShaderSource)
- && FindProcShort (myGlCore20, glUseProgram)
- && FindProcShort (myGlCore20, glUniform1f)
- && FindProcShort (myGlCore20, glUniform2f)
- && FindProcShort (myGlCore20, glUniform3f)
- && FindProcShort (myGlCore20, glUniform4f)
- && FindProcShort (myGlCore20, glUniform1i)
- && FindProcShort (myGlCore20, glUniform2i)
- && FindProcShort (myGlCore20, glUniform3i)
- && FindProcShort (myGlCore20, glUniform4i)
- && FindProcShort (myGlCore20, glUniform1fv)
- && FindProcShort (myGlCore20, glUniform2fv)
- && FindProcShort (myGlCore20, glUniform3fv)
- && FindProcShort (myGlCore20, glUniform4fv)
- && FindProcShort (myGlCore20, glUniform1iv)
- && FindProcShort (myGlCore20, glUniform2iv)
- && FindProcShort (myGlCore20, glUniform3iv)
- && FindProcShort (myGlCore20, glUniform4iv)
- && FindProcShort (myGlCore20, glUniformMatrix2fv)
- && FindProcShort (myGlCore20, glUniformMatrix3fv)
- && FindProcShort (myGlCore20, glUniformMatrix4fv)
- && FindProcShort (myGlCore20, glValidateProgram)
- && FindProcShort (myGlCore20, glVertexAttrib1d)
- && FindProcShort (myGlCore20, glVertexAttrib1dv)
- && FindProcShort (myGlCore20, glVertexAttrib1f)
- && FindProcShort (myGlCore20, glVertexAttrib1fv)
- && FindProcShort (myGlCore20, glVertexAttrib1s)
- && FindProcShort (myGlCore20, glVertexAttrib1sv)
- && FindProcShort (myGlCore20, glVertexAttrib2d)
- && FindProcShort (myGlCore20, glVertexAttrib2dv)
- && FindProcShort (myGlCore20, glVertexAttrib2f)
- && FindProcShort (myGlCore20, glVertexAttrib2fv)
- && FindProcShort (myGlCore20, glVertexAttrib2s)
- && FindProcShort (myGlCore20, glVertexAttrib2sv)
- && FindProcShort (myGlCore20, glVertexAttrib3d)
- && FindProcShort (myGlCore20, glVertexAttrib3dv)
- && FindProcShort (myGlCore20, glVertexAttrib3f)
- && FindProcShort (myGlCore20, glVertexAttrib3fv)
- && FindProcShort (myGlCore20, glVertexAttrib3s)
- && FindProcShort (myGlCore20, glVertexAttrib3sv)
- && FindProcShort (myGlCore20, glVertexAttrib4Nbv)
- && FindProcShort (myGlCore20, glVertexAttrib4Niv)
- && FindProcShort (myGlCore20, glVertexAttrib4Nsv)
- && FindProcShort (myGlCore20, glVertexAttrib4Nub)
- && FindProcShort (myGlCore20, glVertexAttrib4Nubv)
- && FindProcShort (myGlCore20, glVertexAttrib4Nuiv)
- && FindProcShort (myGlCore20, glVertexAttrib4Nusv)
- && FindProcShort (myGlCore20, glVertexAttrib4bv)
- && FindProcShort (myGlCore20, glVertexAttrib4d)
- && FindProcShort (myGlCore20, glVertexAttrib4dv)
- && FindProcShort (myGlCore20, glVertexAttrib4f)
- && FindProcShort (myGlCore20, glVertexAttrib4fv)
- && FindProcShort (myGlCore20, glVertexAttrib4iv)
- && FindProcShort (myGlCore20, glVertexAttrib4s)
- && FindProcShort (myGlCore20, glVertexAttrib4sv)
- && FindProcShort (myGlCore20, glVertexAttrib4ubv)
- && FindProcShort (myGlCore20, glVertexAttrib4uiv)
- && FindProcShort (myGlCore20, glVertexAttrib4usv)
- && FindProcShort (myGlCore20, glVertexAttribPointer);
-
- if (!hasGlCore12)
+ if (IsGlGreaterEqual (3, 0)
+ && FindProcShort (glBlitFramebuffer))
{
- myGlVerMajor = 1;
- myGlVerMinor = 1;
- return;
+ arbFBOBlit = (OpenGl_ArbFBOBlit* )(&(*myFuncs));
}
- else
+ if (IsGlGreaterEqual (3, 0)
+ && FindProcShort (glGenSamplers)
+ && FindProcShort (glDeleteSamplers)
+ && FindProcShort (glIsSampler)
+ && FindProcShort (glBindSampler)
+ && FindProcShort (glSamplerParameteri)
+ && FindProcShort (glSamplerParameteriv)
+ && FindProcShort (glSamplerParameterf)
+ && FindProcShort (glSamplerParameterfv)
+ && FindProcShort (glGetSamplerParameteriv)
+ && FindProcShort (glGetSamplerParameterfv))
+ //&& FindProcShort (glSamplerParameterIiv) // only on Desktop or with extensions GL_OES_texture_border_clamp/GL_EXT_texture_border_clamp
+ //&& FindProcShort (glSamplerParameterIuiv)
+ //&& FindProcShort (glGetSamplerParameterIiv)
+ //&& FindProcShort (glGetSamplerParameterIuiv))
{
- core12 = myGlCore20;
+ arbSamplerObject = (OpenGl_ArbSamplerObject* )(&(*myFuncs));
}
- if (!hasGlCore13)
+ extFragDepth = !IsGlGreaterEqual(3, 0)
+ && CheckExtension ("GL_EXT_frag_depth");
+ if (IsGlGreaterEqual (3, 1)
+ && FindProc ("glTexStorage2DMultisample", myFuncs->glTexStorage2DMultisample))
{
- myGlVerMajor = 1;
- myGlVerMinor = 2;
- return;
+ // MSAA RenderBuffers have been defined in OpenGL ES 3.0,
+ // but MSAA Textures - only in OpenGL ES 3.1+
+ ::glGetIntegerv (GL_MAX_SAMPLES, &myMaxMsaaSamples);
+ }
+
+ hasUintIndex = IsGlGreaterEqual (3, 0)
+ || CheckExtension ("GL_OES_element_index_uint");
+ hasHighp = CheckExtension ("GL_OES_fragment_precision_high");
+ GLint aRange[2] = {0, 0};
+ GLint aPrec = 0;
+ ::glGetShaderPrecisionFormat (GL_FRAGMENT_SHADER, GL_HIGH_FLOAT, aRange, &aPrec);
+ if (aPrec != 0)
+ {
+ hasHighp = Standard_True;
+ }
+
+ arbTexFloat = IsGlGreaterEqual (3, 0)
+ && FindProc ("glTexImage3D", myFuncs->glTexImage3D);
+
+ const Standard_Boolean hasTexBuffer32 = IsGlGreaterEqual (3, 2) && FindProc ("glTexBuffer", myFuncs->glTexBuffer);
+ const Standard_Boolean hasExtTexBuffer = CheckExtension ("GL_EXT_texture_buffer") && FindProc ("glTexBufferEXT", myFuncs->glTexBuffer);
+
+ if (hasTexBuffer32 || hasExtTexBuffer)
+ {
+ arbTBO = reinterpret_cast<OpenGl_ArbTBO*> (myFuncs.get());
+ }
+
+ // initialize debug context extension
+ if (CheckExtension ("GL_KHR_debug"))
+ {
+ // this functionality become a part of OpenGL ES 3.2
+ arbDbg = NULL;
+ // According to GL_KHR_debug spec, all functions should have KHR suffix.
+ // However, some implementations can export these functions without suffix.
+ if (FindProc ("glDebugMessageControlKHR", myFuncs->glDebugMessageControl)
+ && FindProc ("glDebugMessageInsertKHR", myFuncs->glDebugMessageInsert)
+ && FindProc ("glDebugMessageCallbackKHR", myFuncs->glDebugMessageCallback)
+ && FindProc ("glGetDebugMessageLogKHR", myFuncs->glGetDebugMessageLog))
+ {
+ arbDbg = (OpenGl_ArbDbg* )(&(*myFuncs));
+ }
+
+ if (arbDbg != NULL
+ && caps->contextDebug)
+ {
+ // setup default callback
+ myIsGlDebugCtx = Standard_True;
+ arbDbg->glDebugMessageCallback (debugCallbackWrap, this);
+ ::glEnable (GL_DEBUG_OUTPUT);
+ if (caps->contextSyncDebug)
+ {
+ // note that some broken implementations (e.g. simulators) might generate error message on this call
+ ::glEnable (GL_DEBUG_OUTPUT_SYNCHRONOUS);
+ }
+ }
+ }
+
+ extDrawBuffers = CheckExtension ("GL_EXT_draw_buffers") && FindProc ("glDrawBuffersEXT", myFuncs->glDrawBuffers);
+ arbDrawBuffers = CheckExtension ("GL_ARB_draw_buffers") && FindProc ("glDrawBuffersARB", myFuncs->glDrawBuffers);
+
+ if (IsGlGreaterEqual (3, 0) && FindProc ("glDrawBuffers", myFuncs->glDrawBuffers))
+ {
+ hasDrawBuffers = OpenGl_FeatureInCore;
+ }
+ else if (extDrawBuffers || arbDrawBuffers)
+ {
+ hasDrawBuffers = OpenGl_FeatureInExtensions;
+ }
+
+ hasFloatBuffer = IsGlGreaterEqual (3, 2) ? OpenGl_FeatureInCore :
+ CheckExtension ("GL_EXT_color_buffer_float") ? OpenGl_FeatureInExtensions
+ : OpenGl_FeatureNotAvailable;
+ hasHalfFloatBuffer = IsGlGreaterEqual (3, 2) ? OpenGl_FeatureInCore :
+ CheckExtension ("GL_EXT_color_buffer_half_float") ? OpenGl_FeatureInExtensions
+ : OpenGl_FeatureNotAvailable;
+
+ oesSampleVariables = CheckExtension ("GL_OES_sample_variables");
+ oesStdDerivatives = CheckExtension ("GL_OES_standard_derivatives");
+ hasSampleVariables = IsGlGreaterEqual (3, 2) ? OpenGl_FeatureInCore :
+ oesSampleVariables ? OpenGl_FeatureInExtensions
+ : OpenGl_FeatureNotAvailable;
+#else
+
+ myTexClamp = IsGlGreaterEqual (1, 2) ? GL_CLAMP_TO_EDGE : GL_CLAMP;
+
+ hasTexRGBA8 = Standard_True;
+ arbDrawBuffers = CheckExtension ("GL_ARB_draw_buffers");
+ arbNPTW = CheckExtension ("GL_ARB_texture_non_power_of_two");
+ arbTexFloat = IsGlGreaterEqual (3, 0)
+ || CheckExtension ("GL_ARB_texture_float");
+ arbSampleShading = CheckExtension ("GL_ARB_sample_shading");
+ extBgra = CheckExtension ("GL_EXT_bgra");
+ extAnis = CheckExtension ("GL_EXT_texture_filter_anisotropic");
+ extPDS = CheckExtension ("GL_EXT_packed_depth_stencil");
+ atiMem = CheckExtension ("GL_ATI_meminfo");
+ nvxMem = CheckExtension ("GL_NVX_gpu_memory_info");
+
+ hasDrawBuffers = IsGlGreaterEqual (2, 0) ? OpenGl_FeatureInCore :
+ arbDrawBuffers ? OpenGl_FeatureInExtensions
+ : OpenGl_FeatureNotAvailable;
+
+ hasFloatBuffer = hasHalfFloatBuffer = IsGlGreaterEqual (3, 0) ? OpenGl_FeatureInCore :
+ CheckExtension ("GL_ARB_color_buffer_float") ? OpenGl_FeatureInExtensions
+ : OpenGl_FeatureNotAvailable;
+
+ hasSampleVariables = IsGlGreaterEqual (4, 0) ? OpenGl_FeatureInCore :
+ arbSampleShading ? OpenGl_FeatureInExtensions
+ : OpenGl_FeatureNotAvailable;
+
+ GLint aStereo = GL_FALSE;
+ glGetIntegerv (GL_STEREO, &aStereo);
+ myIsStereoBuffers = aStereo == 1;
+
+ // get number of maximum clipping planes
+ glGetIntegerv (GL_MAX_CLIP_PLANES, &myMaxClipPlanes);
+#endif
+
+ if (hasDrawBuffers)
+ {
+ glGetIntegerv (GL_MAX_DRAW_BUFFERS, &myMaxDrawBuffers);
+ glGetIntegerv (GL_MAX_COLOR_ATTACHMENTS, &myMaxColorAttachments);
+ }
+
+ glGetIntegerv (GL_MAX_TEXTURE_SIZE, &myMaxTexDim);
+ if (IsGlGreaterEqual (1, 5))
+ {
+ glGetIntegerv (GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &myMaxTexCombined);
+ }
+
+ if (extAnis)
+ {
+ glGetIntegerv (GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &myAnisoMax);
+ }
+
+ myClippingState.Init (myMaxClipPlanes);
+
+#if !defined(GL_ES_VERSION_2_0)
+
+ bool has12 = false;
+ bool has13 = false;
+ bool has14 = false;
+ bool has15 = false;
+ bool has20 = false;
+ bool has21 = false;
+ bool has30 = false;
+ bool has31 = false;
+ bool has32 = false;
+ bool has33 = false;
+ bool has40 = false;
+ bool has41 = false;
+ bool has42 = false;
+ bool has43 = false;
+ bool has44 = false;
+
+ // retrieve platform-dependent extensions
+#if defined(HAVE_EGL)
+ //
+#elif defined(_WIN32)
+ if (FindProcShort (wglGetExtensionsStringARB))
+ {
+ const char* aWglExts = myFuncs->wglGetExtensionsStringARB (wglGetCurrentDC());
+ if (CheckExtension (aWglExts, "WGL_EXT_swap_control"))
+ {
+ FindProcShort (wglSwapIntervalEXT);
+ }
+ if (CheckExtension (aWglExts, "WGL_ARB_pixel_format"))
+ {
+ FindProcShort (wglChoosePixelFormatARB);
+ }
+ if (CheckExtension (aWglExts, "WGL_ARB_create_context_profile"))
+ {
+ FindProcShort (wglCreateContextAttribsARB);
+ }
+ if (CheckExtension (aWglExts, "WGL_NV_DX_interop"))
+ {
+ FindProcShort (wglDXSetResourceShareHandleNV);
+ FindProcShort (wglDXOpenDeviceNV);
+ FindProcShort (wglDXCloseDeviceNV);
+ FindProcShort (wglDXRegisterObjectNV);
+ FindProcShort (wglDXUnregisterObjectNV);
+ FindProcShort (wglDXObjectAccessNV);
+ FindProcShort (wglDXLockObjectsNV);
+ FindProcShort (wglDXUnlockObjectsNV);
+ }
+ if (CheckExtension (aWglExts, "WGL_AMD_gpu_association"))
+ {
+ FindProcShort (wglGetGPUIDsAMD);
+ FindProcShort (wglGetGPUInfoAMD);
+ FindProcShort (wglGetContextGPUIDAMD);
+ }
+ }
+#elif defined(__APPLE__)
+ //
+#else
+ const char* aGlxExts = ::glXQueryExtensionsString ((Display* )myDisplay, DefaultScreen ((Display* )myDisplay));
+ if (CheckExtension (aGlxExts, "GLX_EXT_swap_control"))
+ {
+ FindProcShort (glXSwapIntervalEXT);
+ }
+ if (CheckExtension (aGlxExts, "GLX_SGI_swap_control"))
+ {
+ FindProcShort (glXSwapIntervalSGI);
+ }
+ if (CheckExtension (aGlxExts, "GLX_MESA_query_renderer"))
+ {
+ FindProcShort (glXQueryRendererIntegerMESA);
+ FindProcShort (glXQueryCurrentRendererIntegerMESA);
+ FindProcShort (glXQueryRendererStringMESA);
+ FindProcShort (glXQueryCurrentRendererStringMESA);
+ }
+ //extSwapTear = CheckExtension (aGlxExts, "GLX_EXT_swap_control_tear");
+#endif
+
+ // load OpenGL 1.2 new functions
+ has12 = IsGlGreaterEqual (1, 2)
+ && FindProcShort (glBlendColor)
+ && FindProcShort (glBlendEquation)
+ && FindProcShort (glDrawRangeElements)
+ && FindProcShort (glTexImage3D)
+ && FindProcShort (glTexSubImage3D)
+ && FindProcShort (glCopyTexSubImage3D);
+
+ // load OpenGL 1.3 new functions
+ has13 = IsGlGreaterEqual (1, 3)
+ && FindProcShort (glActiveTexture)
+ && FindProcShort (glSampleCoverage)
+ && FindProcShort (glCompressedTexImage3D)
+ && FindProcShort (glCompressedTexImage2D)
+ && FindProcShort (glCompressedTexImage1D)
+ && FindProcShort (glCompressedTexSubImage3D)
+ && FindProcShort (glCompressedTexSubImage2D)
+ && FindProcShort (glCompressedTexSubImage1D)
+ && FindProcShort (glGetCompressedTexImage);
+
+ if (!isCoreProfile)
+ {
+ has13 = has13
+ && FindProcShort (glClientActiveTexture)
+ && FindProcShort (glMultiTexCoord1d)
+ && FindProcShort (glMultiTexCoord1dv)
+ && FindProcShort (glMultiTexCoord1f)
+ && FindProcShort (glMultiTexCoord1fv)
+ && FindProcShort (glMultiTexCoord1i)
+ && FindProcShort (glMultiTexCoord1iv)
+ && FindProcShort (glMultiTexCoord1s)
+ && FindProcShort (glMultiTexCoord1sv)
+ && FindProcShort (glMultiTexCoord2d)
+ && FindProcShort (glMultiTexCoord2dv)
+ && FindProcShort (glMultiTexCoord2f)
+ && FindProcShort (glMultiTexCoord2fv)
+ && FindProcShort (glMultiTexCoord2i)
+ && FindProcShort (glMultiTexCoord2iv)
+ && FindProcShort (glMultiTexCoord2s)
+ && FindProcShort (glMultiTexCoord2sv)
+ && FindProcShort (glMultiTexCoord3d)
+ && FindProcShort (glMultiTexCoord3dv)
+ && FindProcShort (glMultiTexCoord3f)
+ && FindProcShort (glMultiTexCoord3fv)
+ && FindProcShort (glMultiTexCoord3i)
+ && FindProcShort (glMultiTexCoord3iv)
+ && FindProcShort (glMultiTexCoord3s)
+ && FindProcShort (glMultiTexCoord3sv)
+ && FindProcShort (glMultiTexCoord4d)
+ && FindProcShort (glMultiTexCoord4dv)
+ && FindProcShort (glMultiTexCoord4f)
+ && FindProcShort (glMultiTexCoord4fv)
+ && FindProcShort (glMultiTexCoord4i)
+ && FindProcShort (glMultiTexCoord4iv)
+ && FindProcShort (glMultiTexCoord4s)
+ && FindProcShort (glMultiTexCoord4sv)
+ && FindProcShort (glLoadTransposeMatrixf)
+ && FindProcShort (glLoadTransposeMatrixd)
+ && FindProcShort (glMultTransposeMatrixf)
+ && FindProcShort (glMultTransposeMatrixd);
+ }
+
+ // load OpenGL 1.4 new functions
+ has14 = IsGlGreaterEqual (1, 4)
+ && FindProcShort (glBlendFuncSeparate)
+ && FindProcShort (glMultiDrawArrays)
+ && FindProcShort (glMultiDrawElements)
+ && FindProcShort (glPointParameterf)
+ && FindProcShort (glPointParameterfv)
+ && FindProcShort (glPointParameteri)
+ && FindProcShort (glPointParameteriv);
+
+ // load OpenGL 1.5 new functions
+ has15 = IsGlGreaterEqual (1, 5)
+ && FindProcShort (glGenQueries)
+ && FindProcShort (glDeleteQueries)
+ && FindProcShort (glIsQuery)
+ && FindProcShort (glBeginQuery)
+ && FindProcShort (glEndQuery)
+ && FindProcShort (glGetQueryiv)
+ && FindProcShort (glGetQueryObjectiv)
+ && FindProcShort (glGetQueryObjectuiv)
+ && FindProcShort (glBindBuffer)
+ && FindProcShort (glDeleteBuffers)
+ && FindProcShort (glGenBuffers)
+ && FindProcShort (glIsBuffer)
+ && FindProcShort (glBufferData)
+ && FindProcShort (glBufferSubData)
+ && FindProcShort (glGetBufferSubData)
+ && FindProcShort (glMapBuffer)
+ && FindProcShort (glUnmapBuffer)
+ && FindProcShort (glGetBufferParameteriv)
+ && FindProcShort (glGetBufferPointerv);
+
+ // load OpenGL 2.0 new functions
+ has20 = IsGlGreaterEqual (2, 0)
+ && FindProcShort (glBlendEquationSeparate)
+ && FindProcShort (glDrawBuffers)
+ && FindProcShort (glStencilOpSeparate)
+ && FindProcShort (glStencilFuncSeparate)
+ && FindProcShort (glStencilMaskSeparate)
+ && FindProcShort (glAttachShader)
+ && FindProcShort (glBindAttribLocation)
+ && FindProcShort (glCompileShader)
+ && FindProcShort (glCreateProgram)
+ && FindProcShort (glCreateShader)
+ && FindProcShort (glDeleteProgram)
+ && FindProcShort (glDeleteShader)
+ && FindProcShort (glDetachShader)
+ && FindProcShort (glDisableVertexAttribArray)
+ && FindProcShort (glEnableVertexAttribArray)
+ && FindProcShort (glGetActiveAttrib)
+ && FindProcShort (glGetActiveUniform)
+ && FindProcShort (glGetAttachedShaders)
+ && FindProcShort (glGetAttribLocation)
+ && FindProcShort (glGetProgramiv)
+ && FindProcShort (glGetProgramInfoLog)
+ && FindProcShort (glGetShaderiv)
+ && FindProcShort (glGetShaderInfoLog)
+ && FindProcShort (glGetShaderSource)
+ && FindProcShort (glGetUniformLocation)
+ && FindProcShort (glGetUniformfv)
+ && FindProcShort (glGetUniformiv)
+ && FindProcShort (glGetVertexAttribdv)
+ && FindProcShort (glGetVertexAttribfv)
+ && FindProcShort (glGetVertexAttribiv)
+ && FindProcShort (glGetVertexAttribPointerv)
+ && FindProcShort (glIsProgram)
+ && FindProcShort (glIsShader)
+ && FindProcShort (glLinkProgram)
+ && FindProcShort (glShaderSource)
+ && FindProcShort (glUseProgram)
+ && FindProcShort (glUniform1f)
+ && FindProcShort (glUniform2f)
+ && FindProcShort (glUniform3f)
+ && FindProcShort (glUniform4f)
+ && FindProcShort (glUniform1i)
+ && FindProcShort (glUniform2i)
+ && FindProcShort (glUniform3i)
+ && FindProcShort (glUniform4i)
+ && FindProcShort (glUniform1fv)
+ && FindProcShort (glUniform2fv)
+ && FindProcShort (glUniform3fv)
+ && FindProcShort (glUniform4fv)
+ && FindProcShort (glUniform1iv)
+ && FindProcShort (glUniform2iv)
+ && FindProcShort (glUniform3iv)
+ && FindProcShort (glUniform4iv)
+ && FindProcShort (glUniformMatrix2fv)
+ && FindProcShort (glUniformMatrix3fv)
+ && FindProcShort (glUniformMatrix4fv)
+ && FindProcShort (glValidateProgram)
+ && FindProcShort (glVertexAttrib1d)
+ && FindProcShort (glVertexAttrib1dv)
+ && FindProcShort (glVertexAttrib1f)
+ && FindProcShort (glVertexAttrib1fv)
+ && FindProcShort (glVertexAttrib1s)
+ && FindProcShort (glVertexAttrib1sv)
+ && FindProcShort (glVertexAttrib2d)
+ && FindProcShort (glVertexAttrib2dv)
+ && FindProcShort (glVertexAttrib2f)
+ && FindProcShort (glVertexAttrib2fv)
+ && FindProcShort (glVertexAttrib2s)
+ && FindProcShort (glVertexAttrib2sv)
+ && FindProcShort (glVertexAttrib3d)
+ && FindProcShort (glVertexAttrib3dv)
+ && FindProcShort (glVertexAttrib3f)
+ && FindProcShort (glVertexAttrib3fv)
+ && FindProcShort (glVertexAttrib3s)
+ && FindProcShort (glVertexAttrib3sv)
+ && FindProcShort (glVertexAttrib4Nbv)
+ && FindProcShort (glVertexAttrib4Niv)
+ && FindProcShort (glVertexAttrib4Nsv)
+ && FindProcShort (glVertexAttrib4Nub)
+ && FindProcShort (glVertexAttrib4Nubv)
+ && FindProcShort (glVertexAttrib4Nuiv)
+ && FindProcShort (glVertexAttrib4Nusv)
+ && FindProcShort (glVertexAttrib4bv)
+ && FindProcShort (glVertexAttrib4d)
+ && FindProcShort (glVertexAttrib4dv)
+ && FindProcShort (glVertexAttrib4f)
+ && FindProcShort (glVertexAttrib4fv)
+ && FindProcShort (glVertexAttrib4iv)
+ && FindProcShort (glVertexAttrib4s)
+ && FindProcShort (glVertexAttrib4sv)
+ && FindProcShort (glVertexAttrib4ubv)
+ && FindProcShort (glVertexAttrib4uiv)
+ && FindProcShort (glVertexAttrib4usv)
+ && FindProcShort (glVertexAttribPointer);
+
+ // load OpenGL 2.1 new functions
+ has21 = IsGlGreaterEqual (2, 1)
+ && FindProcShort (glUniformMatrix2x3fv)
+ && FindProcShort (glUniformMatrix3x2fv)
+ && FindProcShort (glUniformMatrix2x4fv)
+ && FindProcShort (glUniformMatrix4x2fv)
+ && FindProcShort (glUniformMatrix3x4fv)
+ && FindProcShort (glUniformMatrix4x3fv);
+
+ // load GL_ARB_framebuffer_object (added to OpenGL 3.0 core)
+ const bool hasFBO = (IsGlGreaterEqual (3, 0) || CheckExtension ("GL_ARB_framebuffer_object"))
+ && FindProcShort (glIsRenderbuffer)
+ && FindProcShort (glBindRenderbuffer)
+ && FindProcShort (glDeleteRenderbuffers)
+ && FindProcShort (glGenRenderbuffers)
+ && FindProcShort (glRenderbufferStorage)
+ && FindProcShort (glGetRenderbufferParameteriv)
+ && FindProcShort (glIsFramebuffer)
+ && FindProcShort (glBindFramebuffer)
+ && FindProcShort (glDeleteFramebuffers)
+ && FindProcShort (glGenFramebuffers)
+ && FindProcShort (glCheckFramebufferStatus)
+ && FindProcShort (glFramebufferTexture1D)
+ && FindProcShort (glFramebufferTexture2D)
+ && FindProcShort (glFramebufferTexture3D)
+ && FindProcShort (glFramebufferRenderbuffer)
+ && FindProcShort (glGetFramebufferAttachmentParameteriv)
+ && FindProcShort (glGenerateMipmap)
+ && FindProcShort (glBlitFramebuffer)
+ && FindProcShort (glRenderbufferStorageMultisample)
+ && FindProcShort (glFramebufferTextureLayer);
+
+ // load GL_ARB_vertex_array_object (added to OpenGL 3.0 core)
+ const bool hasVAO = (IsGlGreaterEqual (3, 0) || CheckExtension ("GL_ARB_vertex_array_object"))
+ && FindProcShort (glBindVertexArray)
+ && FindProcShort (glDeleteVertexArrays)
+ && FindProcShort (glGenVertexArrays)
+ && FindProcShort (glIsVertexArray);
+
+ // load GL_ARB_map_buffer_range (added to OpenGL 3.0 core)
+ const bool hasMapBufferRange = (IsGlGreaterEqual (3, 0) || CheckExtension ("GL_ARB_map_buffer_range"))
+ && FindProcShort (glMapBufferRange)
+ && FindProcShort (glFlushMappedBufferRange);
+
+ // load OpenGL 3.0 new functions
+ has30 = IsGlGreaterEqual (3, 0)
+ && hasFBO
+ && hasVAO
+ && hasMapBufferRange
+ && FindProcShort (glColorMaski)
+ && FindProcShort (glGetBooleani_v)
+ && FindProcShort (glGetIntegeri_v)
+ && FindProcShort (glEnablei)
+ && FindProcShort (glDisablei)
+ && FindProcShort (glIsEnabledi)
+ && FindProcShort (glBeginTransformFeedback)
+ && FindProcShort (glEndTransformFeedback)
+ && FindProcShort (glBindBufferRange)
+ && FindProcShort (glBindBufferBase)
+ && FindProcShort (glTransformFeedbackVaryings)
+ && FindProcShort (glGetTransformFeedbackVarying)
+ && FindProcShort (glClampColor)
+ && FindProcShort (glBeginConditionalRender)
+ && FindProcShort (glEndConditionalRender)
+ && FindProcShort (glVertexAttribIPointer)
+ && FindProcShort (glGetVertexAttribIiv)
+ && FindProcShort (glGetVertexAttribIuiv)
+ && FindProcShort (glVertexAttribI1i)
+ && FindProcShort (glVertexAttribI2i)
+ && FindProcShort (glVertexAttribI3i)
+ && FindProcShort (glVertexAttribI4i)
+ && FindProcShort (glVertexAttribI1ui)
+ && FindProcShort (glVertexAttribI2ui)
+ && FindProcShort (glVertexAttribI3ui)
+ && FindProcShort (glVertexAttribI4ui)
+ && FindProcShort (glVertexAttribI1iv)
+ && FindProcShort (glVertexAttribI2iv)
+ && FindProcShort (glVertexAttribI3iv)
+ && FindProcShort (glVertexAttribI4iv)
+ && FindProcShort (glVertexAttribI1uiv)
+ && FindProcShort (glVertexAttribI2uiv)
+ && FindProcShort (glVertexAttribI3uiv)
+ && FindProcShort (glVertexAttribI4uiv)
+ && FindProcShort (glVertexAttribI4bv)
+ && FindProcShort (glVertexAttribI4sv)
+ && FindProcShort (glVertexAttribI4ubv)
+ && FindProcShort (glVertexAttribI4usv)
+ && FindProcShort (glGetUniformuiv)
+ && FindProcShort (glBindFragDataLocation)
+ && FindProcShort (glGetFragDataLocation)
+ && FindProcShort (glUniform1ui)
+ && FindProcShort (glUniform2ui)
+ && FindProcShort (glUniform3ui)
+ && FindProcShort (glUniform4ui)
+ && FindProcShort (glUniform1uiv)
+ && FindProcShort (glUniform2uiv)
+ && FindProcShort (glUniform3uiv)
+ && FindProcShort (glUniform4uiv)
+ && FindProcShort (glTexParameterIiv)
+ && FindProcShort (glTexParameterIuiv)
+ && FindProcShort (glGetTexParameterIiv)
+ && FindProcShort (glGetTexParameterIuiv)
+ && FindProcShort (glClearBufferiv)
+ && FindProcShort (glClearBufferuiv)
+ && FindProcShort (glClearBufferfv)
+ && FindProcShort (glClearBufferfi)
+ && FindProcShort (glGetStringi);
+
+ // load GL_ARB_uniform_buffer_object (added to OpenGL 3.1 core)
+ const bool hasUBO = (IsGlGreaterEqual (3, 1) || CheckExtension ("GL_ARB_uniform_buffer_object"))
+ && FindProcShort (glGetUniformIndices)
+ && FindProcShort (glGetActiveUniformsiv)
+ && FindProcShort (glGetActiveUniformName)
+ && FindProcShort (glGetUniformBlockIndex)
+ && FindProcShort (glGetActiveUniformBlockiv)
+ && FindProcShort (glGetActiveUniformBlockName)
+ && FindProcShort (glUniformBlockBinding);
+
+ // load GL_ARB_copy_buffer (added to OpenGL 3.1 core)
+ const bool hasCopyBufSubData = (IsGlGreaterEqual (3, 1) || CheckExtension ("GL_ARB_copy_buffer"))
+ && FindProcShort (glCopyBufferSubData);
+
+ if (has30)
+ {
+ // NPOT textures are required by OpenGL 2.0 specifications
+ // but doesn't hardware accelerated by some ancient OpenGL 2.1 hardware (GeForce FX, RadeOn 9700 etc.)
+ arbNPTW = Standard_True;
+ arbTexRG = Standard_True;
+ }
+
+ // load OpenGL 3.1 new functions
+ has31 = IsGlGreaterEqual (3, 1)
+ && hasUBO
+ && hasCopyBufSubData
+ && FindProcShort (glDrawArraysInstanced)
+ && FindProcShort (glDrawElementsInstanced)
+ && FindProcShort (glTexBuffer)
+ && FindProcShort (glPrimitiveRestartIndex);
+
+ // load GL_ARB_draw_elements_base_vertex (added to OpenGL 3.2 core)
+ const bool hasDrawElemsBaseVert = (IsGlGreaterEqual (3, 2) || CheckExtension ("GL_ARB_draw_elements_base_vertex"))
+ && FindProcShort (glDrawElementsBaseVertex)
+ && FindProcShort (glDrawRangeElementsBaseVertex)
+ && FindProcShort (glDrawElementsInstancedBaseVertex)
+ && FindProcShort (glMultiDrawElementsBaseVertex);
+
+ // load GL_ARB_provoking_vertex (added to OpenGL 3.2 core)
+ const bool hasProvokingVert = (IsGlGreaterEqual (3, 2) || CheckExtension ("GL_ARB_provoking_vertex"))
+ && FindProcShort (glProvokingVertex);
+
+ // load GL_ARB_sync (added to OpenGL 3.2 core)
+ const bool hasSync = (IsGlGreaterEqual (3, 2) || CheckExtension ("GL_ARB_sync"))
+ && FindProcShort (glFenceSync)
+ && FindProcShort (glIsSync)
+ && FindProcShort (glDeleteSync)
+ && FindProcShort (glClientWaitSync)
+ && FindProcShort (glWaitSync)
+ && FindProcShort (glGetInteger64v)
+ && FindProcShort (glGetSynciv);
+
+ // load GL_ARB_texture_multisample (added to OpenGL 3.2 core)
+ const bool hasTextureMultisample = (IsGlGreaterEqual (3, 2) || CheckExtension ("GL_ARB_texture_multisample"))
+ && FindProcShort (glTexImage2DMultisample)
+ && FindProcShort (glTexImage3DMultisample)
+ && FindProcShort (glGetMultisamplefv)
+ && FindProcShort (glSampleMaski);
+
+ // load OpenGL 3.2 new functions
+ has32 = IsGlGreaterEqual (3, 2)
+ && hasDrawElemsBaseVert
+ && hasProvokingVert
+ && hasSync
+ && hasTextureMultisample
+ && FindProcShort (glGetInteger64i_v)
+ && FindProcShort (glGetBufferParameteri64v)
+ && FindProcShort (glFramebufferTexture);
+
+ // load GL_ARB_blend_func_extended (added to OpenGL 3.3 core)
+ const bool hasBlendFuncExtended = (IsGlGreaterEqual (3, 3) || CheckExtension ("GL_ARB_blend_func_extended"))
+ && FindProcShort (glBindFragDataLocationIndexed)
+ && FindProcShort (glGetFragDataIndex);
+
+ // load GL_ARB_sampler_objects (added to OpenGL 3.3 core)
+ const bool hasSamplerObjects = (IsGlGreaterEqual (3, 3) || CheckExtension ("GL_ARB_sampler_objects"))
+ && FindProcShort (glGenSamplers)
+ && FindProcShort (glDeleteSamplers)
+ && FindProcShort (glIsSampler)
+ && FindProcShort (glBindSampler)
+ && FindProcShort (glSamplerParameteri)
+ && FindProcShort (glSamplerParameteriv)
+ && FindProcShort (glSamplerParameterf)
+ && FindProcShort (glSamplerParameterfv)
+ && FindProcShort (glSamplerParameterIiv)
+ && FindProcShort (glSamplerParameterIuiv)
+ && FindProcShort (glGetSamplerParameteriv)
+ && FindProcShort (glGetSamplerParameterIiv)
+ && FindProcShort (glGetSamplerParameterfv)
+ && FindProcShort (glGetSamplerParameterIuiv);
+ if (hasSamplerObjects)
+ {
+ arbSamplerObject = (OpenGl_ArbSamplerObject* )(&(*myFuncs));
+ }
+
+ // load GL_ARB_timer_query (added to OpenGL 3.3 core)
+ const bool hasTimerQuery = (IsGlGreaterEqual (3, 3) || CheckExtension ("GL_ARB_timer_query"))
+ && FindProcShort (glQueryCounter)
+ && FindProcShort (glGetQueryObjecti64v)
+ && FindProcShort (glGetQueryObjectui64v);
+
+ // load GL_ARB_vertex_type_2_10_10_10_rev (added to OpenGL 3.3 core)
+ const bool hasVertType21010101rev = (IsGlGreaterEqual (3, 3) || CheckExtension ("GL_ARB_vertex_type_2_10_10_10_rev"))
+ && FindProcShort (glVertexAttribP1ui)
+ && FindProcShort (glVertexAttribP1uiv)
+ && FindProcShort (glVertexAttribP2ui)
+ && FindProcShort (glVertexAttribP2uiv)
+ && FindProcShort (glVertexAttribP3ui)
+ && FindProcShort (glVertexAttribP3uiv)
+ && FindProcShort (glVertexAttribP4ui)
+ && FindProcShort (glVertexAttribP4uiv);
+
+ if ( hasVertType21010101rev
+ && !isCoreProfile)
+ {
+ // load deprecated functions
+ const bool hasVertType21010101revExt =
+ FindProcShort (glVertexP2ui)
+ && FindProcShort (glVertexP2uiv)
+ && FindProcShort (glVertexP3ui)
+ && FindProcShort (glVertexP3uiv)
+ && FindProcShort (glVertexP4ui)
+ && FindProcShort (glVertexP4uiv)
+ && FindProcShort (glTexCoordP1ui)
+ && FindProcShort (glTexCoordP1uiv)
+ && FindProcShort (glTexCoordP2ui)
+ && FindProcShort (glTexCoordP2uiv)
+ && FindProcShort (glTexCoordP3ui)
+ && FindProcShort (glTexCoordP3uiv)
+ && FindProcShort (glTexCoordP4ui)
+ && FindProcShort (glTexCoordP4uiv)
+ && FindProcShort (glMultiTexCoordP1ui)
+ && FindProcShort (glMultiTexCoordP1uiv)
+ && FindProcShort (glMultiTexCoordP2ui)
+ && FindProcShort (glMultiTexCoordP2uiv)
+ && FindProcShort (glMultiTexCoordP3ui)
+ && FindProcShort (glMultiTexCoordP3uiv)
+ && FindProcShort (glMultiTexCoordP4ui)
+ && FindProcShort (glMultiTexCoordP4uiv)
+ && FindProcShort (glNormalP3ui)
+ && FindProcShort (glNormalP3uiv)
+ && FindProcShort (glColorP3ui)
+ && FindProcShort (glColorP3uiv)
+ && FindProcShort (glColorP4ui)
+ && FindProcShort (glColorP4uiv)
+ && FindProcShort (glSecondaryColorP3ui)
+ && FindProcShort (glSecondaryColorP3uiv);
+ (void )hasVertType21010101revExt;
+ }
+
+ // load OpenGL 3.3 extra functions
+ has33 = IsGlGreaterEqual (3, 3)
+ && hasBlendFuncExtended
+ && hasSamplerObjects
+ && hasTimerQuery
+ && hasVertType21010101rev
+ && FindProcShort (glVertexAttribDivisor);
+
+ // load GL_ARB_draw_indirect (added to OpenGL 4.0 core)
+ const bool hasDrawIndirect = (IsGlGreaterEqual (4, 0) || CheckExtension ("GL_ARB_draw_indirect"))
+ && FindProcShort (glDrawArraysIndirect)
+ && FindProcShort (glDrawElementsIndirect);
+
+ // load GL_ARB_gpu_shader_fp64 (added to OpenGL 4.0 core)
+ const bool hasShaderFP64 = (IsGlGreaterEqual (4, 0) || CheckExtension ("GL_ARB_gpu_shader_fp64"))
+ && FindProcShort (glUniform1d)
+ && FindProcShort (glUniform2d)
+ && FindProcShort (glUniform3d)
+ && FindProcShort (glUniform4d)
+ && FindProcShort (glUniform1dv)
+ && FindProcShort (glUniform2dv)
+ && FindProcShort (glUniform3dv)
+ && FindProcShort (glUniform4dv)
+ && FindProcShort (glUniformMatrix2dv)
+ && FindProcShort (glUniformMatrix3dv)
+ && FindProcShort (glUniformMatrix4dv)
+ && FindProcShort (glUniformMatrix2x3dv)
+ && FindProcShort (glUniformMatrix2x4dv)
+ && FindProcShort (glUniformMatrix3x2dv)
+ && FindProcShort (glUniformMatrix3x4dv)
+ && FindProcShort (glUniformMatrix4x2dv)
+ && FindProcShort (glUniformMatrix4x3dv)
+ && FindProcShort (glGetUniformdv);
+
+ // load GL_ARB_shader_subroutine (added to OpenGL 4.0 core)
+ const bool hasShaderSubroutine = (IsGlGreaterEqual (4, 0) || CheckExtension ("GL_ARB_shader_subroutine"))
+ && FindProcShort (glGetSubroutineUniformLocation)
+ && FindProcShort (glGetSubroutineIndex)
+ && FindProcShort (glGetActiveSubroutineUniformiv)
+ && FindProcShort (glGetActiveSubroutineUniformName)
+ && FindProcShort (glGetActiveSubroutineName)
+ && FindProcShort (glUniformSubroutinesuiv)
+ && FindProcShort (glGetUniformSubroutineuiv)
+ && FindProcShort (glGetProgramStageiv);
+
+ // load GL_ARB_tessellation_shader (added to OpenGL 4.0 core)
+ const bool hasTessellationShader = (IsGlGreaterEqual (4, 0) || CheckExtension ("GL_ARB_tessellation_shader"))
+ && FindProcShort (glPatchParameteri)
+ && FindProcShort (glPatchParameterfv);
+
+ // load GL_ARB_transform_feedback2 (added to OpenGL 4.0 core)
+ const bool hasTrsfFeedback2 = (IsGlGreaterEqual (4, 0) || CheckExtension ("GL_ARB_transform_feedback2"))
+ && FindProcShort (glBindTransformFeedback)
+ && FindProcShort (glDeleteTransformFeedbacks)
+ && FindProcShort (glGenTransformFeedbacks)
+ && FindProcShort (glIsTransformFeedback)
+ && FindProcShort (glPauseTransformFeedback)
+ && FindProcShort (glResumeTransformFeedback)
+ && FindProcShort (glDrawTransformFeedback);
+
+ // load GL_ARB_transform_feedback3 (added to OpenGL 4.0 core)
+ const bool hasTrsfFeedback3 = (IsGlGreaterEqual (4, 0) || CheckExtension ("GL_ARB_transform_feedback3"))
+ && FindProcShort (glDrawTransformFeedbackStream)
+ && FindProcShort (glBeginQueryIndexed)
+ && FindProcShort (glEndQueryIndexed)
+ && FindProcShort (glGetQueryIndexediv);
+
+ // load OpenGL 4.0 new functions
+ has40 = IsGlGreaterEqual (4, 0)
+ && hasDrawIndirect
+ && hasShaderFP64
+ && hasShaderSubroutine
+ && hasTessellationShader
+ && hasTrsfFeedback2
+ && hasTrsfFeedback3
+ && FindProcShort (glMinSampleShading)
+ && FindProcShort (glBlendEquationi)
+ && FindProcShort (glBlendEquationSeparatei)
+ && FindProcShort (glBlendFunci)
+ && FindProcShort (glBlendFuncSeparatei);
+
+ // load GL_ARB_ES2_compatibility (added to OpenGL 4.1 core)
+ const bool hasES2Compatibility = (IsGlGreaterEqual (4, 1) || CheckExtension ("GL_ARB_ES2_compatibility"))
+ && FindProcShort (glReleaseShaderCompiler)
+ && FindProcShort (glShaderBinary)
+ && FindProcShort (glGetShaderPrecisionFormat)
+ && FindProcShort (glDepthRangef)
+ && FindProcShort (glClearDepthf);
+
+ // load GL_ARB_get_program_binary (added to OpenGL 4.1 core)
+ const bool hasGetProgramBinary = (IsGlGreaterEqual (4, 1) || CheckExtension ("GL_ARB_get_program_binary"))
+ && FindProcShort (glGetProgramBinary)
+ && FindProcShort (glProgramBinary)
+ && FindProcShort (glProgramParameteri);
+
+
+ // load GL_ARB_separate_shader_objects (added to OpenGL 4.1 core)
+ const bool hasSeparateShaderObjects = (IsGlGreaterEqual (4, 1) || CheckExtension ("GL_ARB_separate_shader_objects"))
+ && FindProcShort (glUseProgramStages)
+ && FindProcShort (glActiveShaderProgram)
+ && FindProcShort (glCreateShaderProgramv)
+ && FindProcShort (glBindProgramPipeline)
+ && FindProcShort (glDeleteProgramPipelines)
+ && FindProcShort (glGenProgramPipelines)
+ && FindProcShort (glIsProgramPipeline)
+ && FindProcShort (glGetProgramPipelineiv)
+ && FindProcShort (glProgramUniform1i)
+ && FindProcShort (glProgramUniform1iv)
+ && FindProcShort (glProgramUniform1f)
+ && FindProcShort (glProgramUniform1fv)
+ && FindProcShort (glProgramUniform1d)
+ && FindProcShort (glProgramUniform1dv)
+ && FindProcShort (glProgramUniform1ui)
+ && FindProcShort (glProgramUniform1uiv)
+ && FindProcShort (glProgramUniform2i)
+ && FindProcShort (glProgramUniform2iv)
+ && FindProcShort (glProgramUniform2f)
+ && FindProcShort (glProgramUniform2fv)
+ && FindProcShort (glProgramUniform2d)
+ && FindProcShort (glProgramUniform2dv)
+ && FindProcShort (glProgramUniform2ui)
+ && FindProcShort (glProgramUniform2uiv)
+ && FindProcShort (glProgramUniform3i)
+ && FindProcShort (glProgramUniform3iv)
+ && FindProcShort (glProgramUniform3f)
+ && FindProcShort (glProgramUniform3fv)
+ && FindProcShort (glProgramUniform3d)
+ && FindProcShort (glProgramUniform3dv)
+ && FindProcShort (glProgramUniform3ui)
+ && FindProcShort (glProgramUniform3uiv)
+ && FindProcShort (glProgramUniform4i)
+ && FindProcShort (glProgramUniform4iv)
+ && FindProcShort (glProgramUniform4f)
+ && FindProcShort (glProgramUniform4fv)
+ && FindProcShort (glProgramUniform4d)
+ && FindProcShort (glProgramUniform4dv)
+ && FindProcShort (glProgramUniform4ui)
+ && FindProcShort (glProgramUniform4uiv)
+ && FindProcShort (glProgramUniformMatrix2fv)
+ && FindProcShort (glProgramUniformMatrix3fv)
+ && FindProcShort (glProgramUniformMatrix4fv)
+ && FindProcShort (glProgramUniformMatrix2dv)
+ && FindProcShort (glProgramUniformMatrix3dv)
+ && FindProcShort (glProgramUniformMatrix4dv)
+ && FindProcShort (glProgramUniformMatrix2x3fv)
+ && FindProcShort (glProgramUniformMatrix3x2fv)
+ && FindProcShort (glProgramUniformMatrix2x4fv)
+ && FindProcShort (glProgramUniformMatrix4x2fv)
+ && FindProcShort (glProgramUniformMatrix3x4fv)
+ && FindProcShort (glProgramUniformMatrix4x3fv)
+ && FindProcShort (glProgramUniformMatrix2x3dv)
+ && FindProcShort (glProgramUniformMatrix3x2dv)
+ && FindProcShort (glProgramUniformMatrix2x4dv)
+ && FindProcShort (glProgramUniformMatrix4x2dv)
+ && FindProcShort (glProgramUniformMatrix3x4dv)
+ && FindProcShort (glProgramUniformMatrix4x3dv)
+ && FindProcShort (glValidateProgramPipeline)
+ && FindProcShort (glGetProgramPipelineInfoLog);
+
+ // load GL_ARB_vertex_attrib_64bit (added to OpenGL 4.1 core)
+ const bool hasVertAttrib64bit = (IsGlGreaterEqual (4, 1) || CheckExtension ("GL_ARB_vertex_attrib_64bit"))
+ && FindProcShort (glVertexAttribL1d)
+ && FindProcShort (glVertexAttribL2d)
+ && FindProcShort (glVertexAttribL3d)
+ && FindProcShort (glVertexAttribL4d)
+ && FindProcShort (glVertexAttribL1dv)
+ && FindProcShort (glVertexAttribL2dv)
+ && FindProcShort (glVertexAttribL3dv)
+ && FindProcShort (glVertexAttribL4dv)
+ && FindProcShort (glVertexAttribLPointer)
+ && FindProcShort (glGetVertexAttribLdv);
+
+ // load GL_ARB_viewport_array (added to OpenGL 4.1 core)
+ const bool hasViewportArray = (IsGlGreaterEqual (4, 1) || CheckExtension ("GL_ARB_viewport_array"))
+ && FindProcShort (glViewportArrayv)
+ && FindProcShort (glViewportIndexedf)
+ && FindProcShort (glViewportIndexedfv)
+ && FindProcShort (glScissorArrayv)
+ && FindProcShort (glScissorIndexed)
+ && FindProcShort (glScissorIndexedv)
+ && FindProcShort (glDepthRangeArrayv)
+ && FindProcShort (glDepthRangeIndexed)
+ && FindProcShort (glGetFloati_v)
+ && FindProcShort (glGetDoublei_v);
+
+ has41 = IsGlGreaterEqual (4, 1)
+ && hasES2Compatibility
+ && hasGetProgramBinary
+ && hasSeparateShaderObjects
+ && hasVertAttrib64bit
+ && hasViewportArray;
+
+ // load GL_ARB_base_instance (added to OpenGL 4.2 core)
+ const bool hasBaseInstance = (IsGlGreaterEqual (4, 2) || CheckExtension ("GL_ARB_base_instance"))
+ && FindProcShort (glDrawArraysInstancedBaseInstance)
+ && FindProcShort (glDrawElementsInstancedBaseInstance)
+ && FindProcShort (glDrawElementsInstancedBaseVertexBaseInstance);
+
+ // load GL_ARB_transform_feedback_instanced (added to OpenGL 4.2 core)
+ const bool hasTrsfFeedbackInstanced = (IsGlGreaterEqual (4, 2) || CheckExtension ("GL_ARB_transform_feedback_instanced"))
+ && FindProcShort (glDrawTransformFeedbackInstanced)
+ && FindProcShort (glDrawTransformFeedbackStreamInstanced);
+
+ // load GL_ARB_internalformat_query (added to OpenGL 4.2 core)
+ const bool hasInternalFormatQuery = (IsGlGreaterEqual (4, 2) || CheckExtension ("GL_ARB_internalformat_query"))
+ && FindProcShort (glGetInternalformativ);
+
+ // load GL_ARB_shader_atomic_counters (added to OpenGL 4.2 core)
+ const bool hasShaderAtomicCounters = (IsGlGreaterEqual (4, 2) || CheckExtension ("GL_ARB_shader_atomic_counters"))
+ && FindProcShort (glGetActiveAtomicCounterBufferiv);
+
+ // load GL_ARB_shader_image_load_store (added to OpenGL 4.2 core)
+ const bool hasShaderImgLoadStore = (IsGlGreaterEqual (4, 2) || CheckExtension ("GL_ARB_shader_image_load_store"))
+ && FindProcShort (glBindImageTexture)
+ && FindProcShort (glMemoryBarrier);
+
+ // load GL_ARB_texture_storage (added to OpenGL 4.2 core)
+ const bool hasTextureStorage = (IsGlGreaterEqual (4, 2) || CheckExtension ("GL_ARB_texture_storage"))
+ && FindProcShort (glTexStorage1D)
+ && FindProcShort (glTexStorage2D)
+ && FindProcShort (glTexStorage3D);
+
+ has42 = IsGlGreaterEqual (4, 2)
+ && hasBaseInstance
+ && hasTrsfFeedbackInstanced
+ && hasInternalFormatQuery
+ && hasShaderAtomicCounters
+ && hasShaderImgLoadStore
+ && hasTextureStorage;
+
+ has43 = IsGlGreaterEqual (4, 3)
+ && FindProcShort (glClearBufferData)
+ && FindProcShort (glClearBufferSubData)
+ && FindProcShort (glDispatchCompute)
+ && FindProcShort (glDispatchComputeIndirect)
+ && FindProcShort (glCopyImageSubData)
+ && FindProcShort (glFramebufferParameteri)
+ && FindProcShort (glGetFramebufferParameteriv)
+ && FindProcShort (glGetInternalformati64v)
+ && FindProcShort (glInvalidateTexSubImage)
+ && FindProcShort (glInvalidateTexImage)
+ && FindProcShort (glInvalidateBufferSubData)
+ && FindProcShort (glInvalidateBufferData)
+ && FindProcShort (glInvalidateFramebuffer)
+ && FindProcShort (glInvalidateSubFramebuffer)
+ && FindProcShort (glMultiDrawArraysIndirect)
+ && FindProcShort (glMultiDrawElementsIndirect)
+ && FindProcShort (glGetProgramInterfaceiv)
+ && FindProcShort (glGetProgramResourceIndex)
+ && FindProcShort (glGetProgramResourceName)
+ && FindProcShort (glGetProgramResourceiv)
+ && FindProcShort (glGetProgramResourceLocation)
+ && FindProcShort (glGetProgramResourceLocationIndex)
+ && FindProcShort (glShaderStorageBlockBinding)
+ && FindProcShort (glTexBufferRange)
+ && FindProcShort (glTexStorage2DMultisample)
+ && FindProcShort (glTexStorage3DMultisample)
+ && FindProcShort (glTextureView)
+ && FindProcShort (glBindVertexBuffer)
+ && FindProcShort (glVertexAttribFormat)
+ && FindProcShort (glVertexAttribIFormat)
+ && FindProcShort (glVertexAttribLFormat)
+ && FindProcShort (glVertexAttribBinding)
+ && FindProcShort (glVertexBindingDivisor)
+ && FindProcShort (glDebugMessageControl)
+ && FindProcShort (glDebugMessageInsert)
+ && FindProcShort (glDebugMessageCallback)
+ && FindProcShort (glGetDebugMessageLog)
+ && FindProcShort (glPushDebugGroup)
+ && FindProcShort (glPopDebugGroup)
+ && FindProcShort (glObjectLabel)
+ && FindProcShort (glGetObjectLabel)
+ && FindProcShort (glObjectPtrLabel)
+ && FindProcShort (glGetObjectPtrLabel);
+
+ // load GL_ARB_clear_texture (added to OpenGL 4.4 core)
+ bool arbTexClear = (IsGlGreaterEqual (4, 4) || CheckExtension ("GL_ARB_clear_texture"))
+ && FindProcShort (glClearTexImage)
+ && FindProcShort (glClearTexSubImage);
+
+ has44 = IsGlGreaterEqual (4, 4)
+ && arbTexClear
+ && FindProcShort (glBufferStorage)
+ && FindProcShort (glBindBuffersBase)
+ && FindProcShort (glBindBuffersRange)
+ && FindProcShort (glBindTextures)
+ && FindProcShort (glBindSamplers)
+ && FindProcShort (glBindImageTextures)
+ && FindProcShort (glBindVertexBuffers);
+
+ // initialize debug context extension
+ if (CheckExtension ("GL_ARB_debug_output"))
+ {
+ arbDbg = NULL;
+ if (has43)
+ {
+ arbDbg = (OpenGl_ArbDbg* )(&(*myFuncs));
+ }
+ else if (FindProc ("glDebugMessageControlARB", myFuncs->glDebugMessageControl)
+ && FindProc ("glDebugMessageInsertARB", myFuncs->glDebugMessageInsert)
+ && FindProc ("glDebugMessageCallbackARB", myFuncs->glDebugMessageCallback)
+ && FindProc ("glGetDebugMessageLogARB", myFuncs->glGetDebugMessageLog))
+ {
+ arbDbg = (OpenGl_ArbDbg* )(&(*myFuncs));
+ }
+
+ if (arbDbg != NULL
+ && caps->contextDebug)
+ {
+ // setup default callback
+ myIsGlDebugCtx = Standard_True;
+ arbDbg->glDebugMessageCallback (debugCallbackWrap, this);
+ if (has43)
+ {
+ ::glEnable (GL_DEBUG_OUTPUT);
+ }
+ if (caps->contextSyncDebug)
+ {
+ ::glEnable (GL_DEBUG_OUTPUT_SYNCHRONOUS);
+ }
+ }
+ }
+
+ // initialize TBO extension (ARB)
+ if (!has31
+ && CheckExtension ("GL_ARB_texture_buffer_object")
+ && FindProc ("glTexBufferARB", myFuncs->glTexBuffer))
+ {
+ arbTBO = (OpenGl_ArbTBO* )(&(*myFuncs));
+ }
+ arbTboRGB32 = CheckExtension ("GL_ARB_texture_buffer_object_rgb32");
+
+ // initialize hardware instancing extension (ARB)
+ if (!has31
+ && CheckExtension ("GL_ARB_draw_instanced")
+ && FindProc ("glDrawArraysInstancedARB", myFuncs->glDrawArraysInstanced)
+ && FindProc ("glDrawElementsInstancedARB", myFuncs->glDrawElementsInstanced))
+ {
+ arbIns = (OpenGl_ArbIns* )(&(*myFuncs));
+ }
+
+ // initialize FBO extension (ARB)
+ if (hasFBO)
+ {
+ arbFBO = (OpenGl_ArbFBO* )(&(*myFuncs));
+ arbFBOBlit = (OpenGl_ArbFBOBlit* )(&(*myFuncs));
+ extPDS = Standard_True; // extension for EXT, but part of ARB
+ }
+
+ // initialize GS extension (EXT)
+ if (CheckExtension ("GL_EXT_geometry_shader4")
+ && FindProcShort (glProgramParameteriEXT))
+ {
+ extGS = (OpenGl_ExtGS* )(&(*myFuncs));
+ }
+
+ // initialize bindless texture extension (ARB)
+ if (CheckExtension ("GL_ARB_bindless_texture")
+ && FindProcShort (glGetTextureHandleARB)
+ && FindProcShort (glGetTextureSamplerHandleARB)
+ && FindProcShort (glMakeTextureHandleResidentARB)
+ && FindProcShort (glMakeTextureHandleNonResidentARB)
+ && FindProcShort (glGetImageHandleARB)
+ && FindProcShort (glMakeImageHandleResidentARB)
+ && FindProcShort (glMakeImageHandleNonResidentARB)
+ && FindProcShort (glUniformHandleui64ARB)
+ && FindProcShort (glUniformHandleui64vARB)
+ && FindProcShort (glProgramUniformHandleui64ARB)
+ && FindProcShort (glProgramUniformHandleui64vARB)
+ && FindProcShort (glIsTextureHandleResidentARB)
+ && FindProcShort (glIsImageHandleResidentARB)
+ && FindProcShort (glVertexAttribL1ui64ARB)
+ && FindProcShort (glVertexAttribL1ui64vARB)
+ && FindProcShort (glGetVertexAttribLui64vARB))
+ {
+ arbTexBindless = (OpenGl_ArbTexBindless* )(&(*myFuncs));
+ }
+
+ if (!has12)
+ {
+ checkWrongVersion (1, 2);
+ myGlVerMajor = 1;
+ myGlVerMinor = 1;
+ return;
+ }
+ else if (!has13)
+ {
+ checkWrongVersion (1, 3);
+ myGlVerMajor = 1;
+ myGlVerMinor = 2;
+ return;
+ }
+ else if (!has14)
+ {
+ checkWrongVersion (1, 4);
+ myGlVerMajor = 1;
+ myGlVerMinor = 3;
+ return;
+ }
+ else if (!has15)
+ {
+ checkWrongVersion (1, 5);
+ myGlVerMajor = 1;
+ myGlVerMinor = 4;
+ return;
+ }
+ if (!isCoreProfile)
+ {
+ core15 = (OpenGl_GlCore15* )(&(*myFuncs));
+ }
+ core15fwd = (OpenGl_GlCore15Fwd* )(&(*myFuncs));
+
+ if (!has20)
+ {
+ checkWrongVersion (2, 0);
+ myGlVerMajor = 1;
+ myGlVerMinor = 5;
+ return;
+ }
+
+ const char* aGlslVer = (const char* )::glGetString (GL_SHADING_LANGUAGE_VERSION);
+ if (aGlslVer == NULL
+ || *aGlslVer == '\0')
+ {
+ // broken context has been detected
+ TCollection_ExtendedString aMsg = TCollection_ExtendedString()
+ + "Error! OpenGL context reports version "
+ + myGlVerMajor + "." + myGlVerMinor
+ + " but reports wrong GLSL version";
+ PushMessage (GL_DEBUG_SOURCE_APPLICATION,
+ GL_DEBUG_TYPE_ERROR,
+ 0,
+ GL_DEBUG_SEVERITY_HIGH,
+ aMsg);
+ myGlVerMajor = 1;
+ myGlVerMinor = 5;
+ return;
+ }
+
+ if (!isCoreProfile)
+ {
+ core20 = (OpenGl_GlCore20* )(&(*myFuncs));
+ }
+ core20fwd = (OpenGl_GlCore20Fwd* )(&(*myFuncs));
+
+ if (!has21)
+ {
+ checkWrongVersion (2, 1);
+ myGlVerMajor = 2;
+ myGlVerMinor = 0;
+ return;
+ }
+
+ if (!has30)
+ {
+ checkWrongVersion (3, 0);
+ myGlVerMajor = 2;
+ myGlVerMinor = 1;
+ return;
+ }
+
+ // MSAA RenderBuffers have been defined in OpenGL 3.0,
+ // but MSAA Textures - only in OpenGL 3.2+
+ if (!has32
+ && CheckExtension ("GL_ARB_texture_multisample")
+ && FindProcShort (glTexImage2DMultisample))
+ {
+ GLint aNbColorSamples = 0, aNbDepthSamples = 0;
+ ::glGetIntegerv (GL_MAX_COLOR_TEXTURE_SAMPLES, &aNbColorSamples);
+ ::glGetIntegerv (GL_MAX_DEPTH_TEXTURE_SAMPLES, &aNbDepthSamples);
+ myMaxMsaaSamples = Min (aNbColorSamples, aNbDepthSamples);
+ }
+ if (!has43
+ && CheckExtension ("GL_ARB_texture_storage_multisample")
+ && FindProcShort (glTexStorage2DMultisample))
+ {
+ //
+ }
+
+ if (!has31)
+ {
+ checkWrongVersion (3, 1);
+ myGlVerMajor = 3;
+ myGlVerMinor = 0;
+ return;
+ }
+ arbTBO = (OpenGl_ArbTBO* )(&(*myFuncs));
+ arbIns = (OpenGl_ArbIns* )(&(*myFuncs));
+
+ // check whether ray tracing mode is supported
+ myHasRayTracing = has31
+ && arbTboRGB32
+ && arbFBOBlit != NULL;
+
+ // check whether textures in ray tracing mode are supported
+ myHasRayTracingTextures = myHasRayTracing
+ && arbTexBindless != NULL;
+
+ // check whether adaptive screen sampling in ray tracing mode is supported
+ myHasRayTracingAdaptiveSampling = myHasRayTracing
+ && has44
+ && CheckExtension ("GL_NV_shader_atomic_float");
+
+ if (!has32)
+ {
+ checkWrongVersion (3, 2);
+ myGlVerMajor = 3;
+ myGlVerMinor = 1;
+ return;
+ }
+ core32 = (OpenGl_GlCore32* )(&(*myFuncs));
+ if (isCoreProfile)
+ {
+ core32->glGenVertexArrays (1, &myDefaultVao);
+ }
+ else
+ {
+ core32back = (OpenGl_GlCore32Back* )(&(*myFuncs));
+ }
+ ::glGetIntegerv (GL_MAX_SAMPLES, &myMaxMsaaSamples);
+
+ if (!has33)
+ {
+ checkWrongVersion (3, 3);
+ myGlVerMajor = 3;
+ myGlVerMinor = 2;
+ return;
+ }
+ core33 = (OpenGl_GlCore33* )(&(*myFuncs));
+ if (!isCoreProfile)
+ {
+ core33back = (OpenGl_GlCore33Back* )(&(*myFuncs));
+ }
+
+ if (!has40)
+ {
+ checkWrongVersion (4, 0);
+ myGlVerMajor = 3;
+ myGlVerMinor = 3;
+ return;
+ }
+ arbTboRGB32 = Standard_True; // in core since OpenGL 4.0
+
+ if (!has41)
+ {
+ checkWrongVersion (4, 1);
+ myGlVerMajor = 4;
+ myGlVerMinor = 0;
+ return;
+ }
+ core41 = (OpenGl_GlCore41* )(&(*myFuncs));
+ if (!isCoreProfile)
+ {
+ core41back = (OpenGl_GlCore41Back* )(&(*myFuncs));
+ }
+
+ if(!has42)
+ {
+ checkWrongVersion (4, 2);
+ myGlVerMajor = 4;
+ myGlVerMinor = 1;
+ return;
+ }
+ core42 = (OpenGl_GlCore42* )(&(*myFuncs));
+ if (!isCoreProfile)
+ {
+ core42back = (OpenGl_GlCore42Back* )(&(*myFuncs));
+ }
+
+ if (!has43)
+ {
+ checkWrongVersion (4, 3);
+ myGlVerMajor = 4;
+ myGlVerMinor = 2;
+ return;
+ }
+ core43 = (OpenGl_GlCore43* )(&(*myFuncs));
+ if (!isCoreProfile)
+ {
+ core43back = (OpenGl_GlCore43Back* )(&(*myFuncs));
+ }
+
+ if (!has44)
+ {
+ checkWrongVersion (4, 4);
+ myGlVerMajor = 4;
+ myGlVerMinor = 3;
+ return;
+ }
+ core44 = (OpenGl_GlCore44* )(&(*myFuncs));
+ if (!isCoreProfile)
+ {
+ core44back = (OpenGl_GlCore44Back* )(&(*myFuncs));
+ }
+#endif
+}
+
+// =======================================================================
+// function : MemoryInfo
+// purpose :
+// =======================================================================
+Standard_Size OpenGl_Context::AvailableMemory() const
+{
+#if !defined(GL_ES_VERSION_2_0)
+ if (atiMem)
+ {
+ // this is actually information for VBO pool
+ // however because pools are mostly shared
+ // it can be used for total GPU memory estimations
+ GLint aMemInfo[4];
+ aMemInfo[0] = 0;
+ glGetIntegerv (GL_VBO_FREE_MEMORY_ATI, aMemInfo);
+ // returned value is in KiB, however this maybe changed in future
+ return Standard_Size(aMemInfo[0]) * 1024;
+ }
+ else if (nvxMem)
+ {
+ // current available dedicated video memory (in KiB), currently unused GPU memory
+ GLint aMemInfo = 0;
+ glGetIntegerv (GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX, &aMemInfo);
+ return Standard_Size(aMemInfo) * 1024;
+ }
+#endif
+ return 0;
+}
+
+// =======================================================================
+// function : MemoryInfo
+// purpose :
+// =======================================================================
+TCollection_AsciiString OpenGl_Context::MemoryInfo() const
+{
+ TColStd_IndexedDataMapOfStringString aDict;
+ MemoryInfo (aDict);
+
+ TCollection_AsciiString aText;
+ for (TColStd_IndexedDataMapOfStringString::Iterator anIter (aDict); anIter.More(); anIter.Next())
+ {
+ if (!aText.IsEmpty())
+ {
+ aText += "\n";
+ }
+ aText += TCollection_AsciiString(" ") + anIter.Key() + ": " + anIter.Value();
+ }
+ return aText;
+}
+
+// =======================================================================
+// function : MemoryInfo
+// purpose :
+// =======================================================================
+void OpenGl_Context::MemoryInfo (TColStd_IndexedDataMapOfStringString& theDict) const
+{
+#if defined(GL_ES_VERSION_2_0)
+ (void )theDict;
+#elif defined(__APPLE__) && !defined(MACOSX_USE_GLX)
+ GLint aGlRendId = 0;
+ CGLGetParameter (CGLGetCurrentContext(), kCGLCPCurrentRendererID, &aGlRendId);
+
+ CGLRendererInfoObj aRendObj = NULL;
+ CGOpenGLDisplayMask aDispMask = CGDisplayIDToOpenGLDisplayMask (kCGDirectMainDisplay);
+ GLint aRendNb = 0;
+ CGLQueryRendererInfo (aDispMask, &aRendObj, &aRendNb);
+ for (GLint aRendIter = 0; aRendIter < aRendNb; ++aRendIter)
+ {
+ GLint aRendId = 0;
+ if (CGLDescribeRenderer (aRendObj, aRendIter, kCGLRPRendererID, &aRendId) != kCGLNoError
+ || aRendId != aGlRendId)
+ {
+ continue;
+ }
+
+ //kCGLRPVideoMemoryMegabytes = 131;
+ //kCGLRPTextureMemoryMegabytes = 132;
+ GLint aVMem = 0;
+ #if MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
+ if (CGLDescribeRenderer(aRendObj, aRendIter, kCGLRPVideoMemoryMegabytes, &aVMem) == kCGLNoError)
+ {
+ addInfo (theDict, "GPU memory", TCollection_AsciiString() + aVMem + " MiB");
+ }
+ if (CGLDescribeRenderer(aRendObj, aRendIter, kCGLRPTextureMemoryMegabytes, &aVMem) == kCGLNoError)
+ {
+ addInfo (theDict, "GPU Texture memory", TCollection_AsciiString() + aVMem + " MiB");
+ }
+ #else
+ if (CGLDescribeRenderer(aRendObj, aRendIter, kCGLRPVideoMemory, &aVMem) == kCGLNoError)
+ {
+ addInfo (theDict, "GPU memory", TCollection_AsciiString() + (aVMem / (1024 * 1024)) + " MiB");
+ }
+ if (CGLDescribeRenderer(aRendObj, aRendIter, kCGLRPTextureMemory, &aVMem) == kCGLNoError)
+ {
+ addInfo (theDict, "GPU Texture memory", TCollection_AsciiString() + (aVMem / (1024 * 1024)) + " MiB");
+ }
+ #endif
+ }
+#endif
+
+#if !defined(GL_ES_VERSION_2_0)
+ if (atiMem)
+ {
+ GLint aValues[4];
+ memset (aValues, 0, sizeof(aValues));
+ glGetIntegerv (GL_VBO_FREE_MEMORY_ATI, aValues);
+
+ // total memory free in the pool
+ addInfo (theDict, "GPU free memory", TCollection_AsciiString() + (aValues[0] / 1024) + " MiB");
+
+ if (aValues[1] != aValues[0])
+ {
+ // largest available free block in the pool
+ addInfo (theDict, "Largest free block", TCollection_AsciiString() + (aValues[1] / 1024) + " MiB");
+ }
+ if (aValues[2] != aValues[0])
+ {
+ // total auxiliary memory free
+ addInfo (theDict, "Free auxiliary memory", TCollection_AsciiString() + (aValues[2] / 1024) + " MiB");
+ }
+ }
+ else if (nvxMem)
+ {
+ //current available dedicated video memory (in KiB), currently unused GPU memory
+ GLint aValue = 0;
+ glGetIntegerv (GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX, &aValue);
+ addInfo (theDict, "GPU free memory", TCollection_AsciiString() + (aValue / 1024) + " MiB");
+
+ // dedicated video memory, total size (in KiB) of the GPU memory
+ GLint aDedicated = 0;
+ glGetIntegerv (GL_GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX, &aDedicated);
+ addInfo (theDict, "GPU memory", TCollection_AsciiString() + (aDedicated / 1024) + " MiB");
+
+ // total available memory, total size (in KiB) of the memory available for allocations
+ glGetIntegerv (GL_GPU_MEMORY_INFO_TOTAL_AVAILABLE_MEMORY_NVX, &aValue);
+ if (aValue != aDedicated)
+ {
+ // different only for special configurations
+ addInfo (theDict, "Total memory", TCollection_AsciiString() + (aValue / 1024) + " MiB");
+ }
+ }
+#if defined(_WIN32)
+ else if (myFuncs->wglGetGPUInfoAMD != NULL
+ && myFuncs->wglGetContextGPUIDAMD != NULL)
+ {
+ GLuint aTotalMemMiB = 0;
+ UINT anAmdId = myFuncs->wglGetContextGPUIDAMD ((HGLRC )myGContext);
+ if (anAmdId != 0)
+ {
+ if (myFuncs->wglGetGPUInfoAMD (anAmdId, WGL_GPU_RAM_AMD, GL_UNSIGNED_INT, sizeof(aTotalMemMiB), &aTotalMemMiB) > 0)
+ {
+ addInfo (theDict, "GPU memory", TCollection_AsciiString() + (int )aTotalMemMiB + " MiB");
+ }
+ }
+ }
+#endif
+#endif
+
+#if !defined(GL_ES_VERSION_2_0) && !defined(__APPLE__) && !defined(_WIN32)
+ // GLX_RENDERER_VENDOR_ID_MESA
+ if (myFuncs->glXQueryCurrentRendererIntegerMESA != NULL)
+ {
+ unsigned int aVMemMiB = 0;
+ if (myFuncs->glXQueryCurrentRendererIntegerMESA (GLX_RENDERER_VIDEO_MEMORY_MESA, &aVMemMiB) != False)
+ {
+ addInfo (theDict, "GPU memory", TCollection_AsciiString() + int(aVMemMiB) + " MiB");
+ }
+ }
+#endif
+}
+
+// =======================================================================
+// function : DiagnosticInfo
+// purpose :
+// =======================================================================
+void OpenGl_Context::DiagnosticInformation (TColStd_IndexedDataMapOfStringString& theDict,
+ Graphic3d_DiagnosticInfo theFlags) const
+{
+ if ((theFlags & Graphic3d_DiagnosticInfo_NativePlatform) != 0)
+ {
+ #if defined(HAVE_EGL)
+ addInfo (theDict, "EGLVersion", ::eglQueryString ((EGLDisplay )myDisplay, EGL_VERSION));
+ addInfo (theDict, "EGLVendor", ::eglQueryString ((EGLDisplay )myDisplay, EGL_VENDOR));
+ addInfo (theDict, "EGLClientAPIs", ::eglQueryString ((EGLDisplay )myDisplay, EGL_CLIENT_APIS));
+ if ((theFlags & Graphic3d_DiagnosticInfo_Extensions) != 0)
+ {
+ addInfo (theDict, "EGLExtensions", ::eglQueryString ((EGLDisplay )myDisplay, EGL_EXTENSIONS));
+ }
+ #elif defined(_WIN32)
+ if ((theFlags & Graphic3d_DiagnosticInfo_Extensions) != 0
+ && myFuncs->wglGetExtensionsStringARB != NULL)
+ {
+ const char* aWglExts = myFuncs->wglGetExtensionsStringARB ((HDC )myWindowDC);
+ addInfo (theDict, "WGLExtensions", aWglExts);
+ }
+ #elif defined(__APPLE__)
+ //
+ #else
+ Display* aDisplay = (Display*)myDisplay;
+ const int aScreen = DefaultScreen(aDisplay);
+ addInfo (theDict, "GLXDirectRendering", ::glXIsDirect (aDisplay, (GLXContext )myGContext) ? "Yes" : "No");
+ addInfo (theDict, "GLXVendor", ::glXQueryServerString (aDisplay, aScreen, GLX_VENDOR));
+ addInfo (theDict, "GLXVersion", ::glXQueryServerString (aDisplay, aScreen, GLX_VERSION));
+ if ((theFlags & Graphic3d_DiagnosticInfo_Extensions) != 0)
+ {
+ const char* aGlxExts = ::glXQueryExtensionsString (aDisplay, aScreen);
+ addInfo(theDict, "GLXExtensions", aGlxExts);
+ }
+
+ addInfo (theDict, "GLXClientVendor", ::glXGetClientString (aDisplay, GLX_VENDOR));
+ addInfo (theDict, "GLXClientVersion", ::glXGetClientString (aDisplay, GLX_VERSION));
+ if ((theFlags & Graphic3d_DiagnosticInfo_Extensions) != 0)
+ {
+ addInfo (theDict, "GLXClientExtensions", ::glXGetClientString (aDisplay, GLX_EXTENSIONS));
+ }
+ #endif
+ }
+
+ if ((theFlags & Graphic3d_DiagnosticInfo_Device) != 0)
+ {
+ addInfo (theDict, "GLvendor", (const char*)::glGetString (GL_VENDOR));
+ addInfo (theDict, "GLdevice", (const char*)::glGetString (GL_RENDERER));
+ addInfo (theDict, "GLversion", (const char*)::glGetString (GL_VERSION));
+ if (IsGlGreaterEqual (2, 0))
+ {
+ addInfo (theDict, "GLSLversion", (const char*)::glGetString (GL_SHADING_LANGUAGE_VERSION));
+ }
+ if (myIsGlDebugCtx)
+ {
+ addInfo (theDict, "GLdebug", "ON");
+ }
+ }
+
+ if ((theFlags & Graphic3d_DiagnosticInfo_Limits) != 0)
+ {
+ addInfo (theDict, "Max texture size", TCollection_AsciiString(myMaxTexDim));
+ addInfo (theDict, "Max combined texture units", TCollection_AsciiString(myMaxTexCombined));
+ addInfo (theDict, "Max MSAA samples", TCollection_AsciiString(myMaxMsaaSamples));
+ }
+
+ if ((theFlags & Graphic3d_DiagnosticInfo_FrameBuffer) != 0)
+ {
+ GLint aViewport[4] = {};
+ ::glGetIntegerv (GL_VIEWPORT, aViewport);
+ addInfo (theDict, "Viewport", TCollection_AsciiString() + aViewport[2] + "x" + aViewport[3]);
+ }
+
+ if ((theFlags & Graphic3d_DiagnosticInfo_Memory) != 0)
+ {
+ MemoryInfo (theDict);
+ }
+
+ if ((theFlags & Graphic3d_DiagnosticInfo_Extensions) != 0)
+ {
+ #if !defined(GL_ES_VERSION_2_0)
+ if (IsGlGreaterEqual (3, 0)
+ && myFuncs->glGetStringi != NULL)
+ {
+ TCollection_AsciiString anExtList;
+ GLint anExtNb = 0;
+ ::glGetIntegerv (GL_NUM_EXTENSIONS, &anExtNb);
+ for (GLint anIter = 0; anIter < anExtNb; ++anIter)
+ {
+ const char* anExtension = (const char*)myFuncs->glGetStringi (GL_EXTENSIONS, (GLuint)anIter);
+ if (!anExtList.IsEmpty())
+ {
+ anExtList += " ";
+ }
+ anExtList += anExtension;
+ }
+ addInfo(theDict, "GLextensions", anExtList);
+ }
+ else
+ #endif
+ {
+ addInfo (theDict, "GLextensions", (const char*)::glGetString (GL_EXTENSIONS));
+ }
+ }
+}
+
+// =======================================================================
+// function : GetResource
+// purpose :
+// =======================================================================
+const Handle(OpenGl_Resource)& OpenGl_Context::GetResource (const TCollection_AsciiString& theKey) const
+{
+ return mySharedResources->IsBound (theKey) ? mySharedResources->Find (theKey) : NULL_GL_RESOURCE;
+}
+
+// =======================================================================
+// function : ShareResource
+// purpose :
+// =======================================================================
+Standard_Boolean OpenGl_Context::ShareResource (const TCollection_AsciiString& theKey,
+ const Handle(OpenGl_Resource)& theResource)
+{
+ if (theKey.IsEmpty() || theResource.IsNull())
+ {
+ return Standard_False;
+ }
+ return mySharedResources->Bind (theKey, theResource);
+}
+
+// =======================================================================
+// function : ReleaseResource
+// purpose :
+// =======================================================================
+void OpenGl_Context::ReleaseResource (const TCollection_AsciiString& theKey,
+ const Standard_Boolean theToDelay)
+{
+ if (!mySharedResources->IsBound (theKey))
+ {
+ return;
+ }
+ const Handle(OpenGl_Resource)& aRes = mySharedResources->Find (theKey);
+ if (aRes->GetRefCount() > 1)
+ {
+ return;
+ }
+
+ if (theToDelay)
+ {
+ myDelayed->Bind (theKey, 1);
+ }
+ else
+ {
+ aRes->Release (this);
+ mySharedResources->UnBind (theKey);
+ }
+}
+
+// =======================================================================
+// function : ReleaseDelayed
+// purpose :
+// =======================================================================
+void OpenGl_Context::ReleaseDelayed()
+{
+ // release queued elements
+ while (!myUnusedResources->IsEmpty())
+ {
+ myUnusedResources->First()->Release (this);
+ myUnusedResources->RemoveFirst();
+ }
+
+ // release delayed shared resources
+ NCollection_Vector<TCollection_AsciiString> aDeadList;
+ for (NCollection_DataMap<TCollection_AsciiString, Standard_Integer>::Iterator anIter (*myDelayed);
+ anIter.More(); anIter.Next())
+ {
+ if (++anIter.ChangeValue() <= 2)
+ {
+ continue; // postpone release one more frame to ensure noone use it periodically
+ }
+
+ const TCollection_AsciiString& aKey = anIter.Key();
+ if (!mySharedResources->IsBound (aKey))
+ {
+ // mixed unshared strategy delayed/undelayed was used!
+ aDeadList.Append (aKey);
+ continue;
+ }
+
+ const Handle(OpenGl_Resource)& aRes = mySharedResources->ChangeFind (aKey);
+ if (aRes->GetRefCount() > 1)
+ {
+ // should be only 1 instance in mySharedResources
+ // if not - resource was reused again
+ aDeadList.Append (aKey);
+ continue;
+ }
+
+ // release resource if no one requiested it more than 2 redraw calls
+ aRes->Release (this);
+ mySharedResources->UnBind (aKey);
+ aDeadList.Append (aKey);
+ }
+
+ for (Standard_Integer anIter = 0; anIter < aDeadList.Length(); ++anIter)
+ {
+ myDelayed->UnBind (aDeadList.Value (anIter));
+ }
+}
+
+// =======================================================================
+// function : BindTextures
+// purpose :
+// =======================================================================
+Handle(OpenGl_TextureSet) OpenGl_Context::BindTextures (const Handle(OpenGl_TextureSet)& theTextures)
+{
+ if (myActiveTextures == theTextures)
+ {
+ return myActiveTextures;
+ }
+
+ Handle(OpenGl_Context) aThisCtx (this);
+ OpenGl_TextureSet::Iterator aTextureIterOld (myActiveTextures), aTextureIterNew (theTextures);
+ for (;;)
+ {
+ if (!aTextureIterNew.More())
+ {
+ for (; aTextureIterOld.More(); aTextureIterOld.Next())
+ {
+ if (const Handle(OpenGl_Texture)& aTextureOld = aTextureIterOld.Value())
+ {
+ #if !defined(GL_ES_VERSION_2_0)
+ if (core11 != NULL)
+ {
+ OpenGl_Sampler::resetGlobalTextureParams (aThisCtx, *aTextureOld, aTextureOld->Sampler()->Parameters());
+ }
+ #endif
+ aTextureOld->Unbind (aThisCtx);
+ }
+ }
+ break;
+ }
+
+ const Handle(OpenGl_Texture)& aTextureNew = aTextureIterNew.Value();
+ if (aTextureIterOld.More())
+ {
+ const Handle(OpenGl_Texture)& aTextureOld = aTextureIterOld.Value();
+ if (aTextureNew == aTextureOld)
+ {
+ aTextureIterNew.Next();
+ aTextureIterOld.Next();
+ continue;
+ }
+ else if (aTextureNew.IsNull()
+ || !aTextureNew->IsValid())
+ {
+ if (!aTextureOld.IsNull())
+ {
+ #if !defined(GL_ES_VERSION_2_0)
+ if (core11 != NULL)
+ {
+ OpenGl_Sampler::resetGlobalTextureParams (aThisCtx, *aTextureOld, aTextureOld->Sampler()->Parameters());
+ }
+ #endif
+ aTextureOld->Unbind (aThisCtx);
+ }
+
+ aTextureIterNew.Next();
+ aTextureIterOld.Next();
+ continue;
+ }
+
+ aTextureIterOld.Next();
+ }
+ if (aTextureNew.IsNull())
+ {
+ aTextureIterNew.Next();
+ continue;
+ }
+
+ const Graphic3d_TextureUnit aTexUnit = aTextureNew->Sampler()->Parameters()->TextureUnit();
+ if (aTexUnit >= myMaxTexCombined)
+ {
+ PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH,
+ TCollection_AsciiString("Texture unit ") + aTexUnit + " for " + aTextureNew->ResourceId() + " exceeds hardware limit " + myMaxTexCombined);
+ aTextureIterNew.Next();
+ continue;
+ }
+
+ aTextureNew->Bind (aThisCtx);
+ if (aTextureNew->Sampler()->ToUpdateParameters())
+ {
+ if (aTextureNew->Sampler()->IsImmutable())
+ {
+ aTextureNew->Sampler()->Init (aThisCtx, *aTextureNew);
+ }
+ else
+ {
+ OpenGl_Sampler::applySamplerParams (aThisCtx, aTextureNew->Sampler()->Parameters(), aTextureNew->Sampler().get(), aTextureNew->GetTarget(), aTextureNew->HasMipmaps());
+ }
+ }
+ #if !defined(GL_ES_VERSION_2_0)
+ if (core11 != NULL)
+ {
+ OpenGl_Sampler::applyGlobalTextureParams (aThisCtx, *aTextureNew, aTextureNew->Sampler()->Parameters());
+ }
+ #endif
+ aTextureIterNew.Next();
+ }
+
+ Handle(OpenGl_TextureSet) anOldTextures = myActiveTextures;
+ myActiveTextures = theTextures;
+ return anOldTextures;
+}
+
+// =======================================================================
+// function : BindProgram
+// purpose :
+// =======================================================================
+Standard_Boolean OpenGl_Context::BindProgram (const Handle(OpenGl_ShaderProgram)& theProgram)
+{
+ if (core20fwd == NULL)
+ {
+ return Standard_False;
+ }
+ else if (myActiveProgram == theProgram)
+ {
+ return Standard_True;
+ }
+
+ if (theProgram.IsNull()
+ || !theProgram->IsValid())
+ {
+ if (!myActiveProgram.IsNull())
+ {
+ core20fwd->glUseProgram (OpenGl_ShaderProgram::NO_PROGRAM);
+ myActiveProgram.Nullify();
+ }
+ return Standard_False;
+ }
+
+ myActiveProgram = theProgram;
+ core20fwd->glUseProgram (theProgram->ProgramId());
+ return Standard_True;
+}
+
+// =======================================================================
+// function : BindDefaultVao
+// purpose :
+// =======================================================================
+void OpenGl_Context::BindDefaultVao()
+{
+#if !defined(GL_ES_VERSION_2_0)
+ if (myDefaultVao == 0
+ || core32 == NULL)
+ {
+ return;
+ }
+
+ core32->glBindVertexArray (myDefaultVao);
+#endif
+}
+
+// =======================================================================
+// function : SetDefaultFrameBuffer
+// purpose :
+// =======================================================================
+Handle(OpenGl_FrameBuffer) OpenGl_Context::SetDefaultFrameBuffer (const Handle(OpenGl_FrameBuffer)& theFbo)
+{
+ Handle(OpenGl_FrameBuffer) aFbo = myDefaultFbo;
+ myDefaultFbo = theFbo;
+ return aFbo;
+}
+
+// =======================================================================
+// function : SetShadingMaterial
+// purpose :
+// =======================================================================
+void OpenGl_Context::SetShadingMaterial (const OpenGl_AspectFace* theAspect,
+ const Handle(Graphic3d_PresentationAttributes)& theHighlight)
+{
+ const Handle(Graphic3d_AspectFillArea3d)& anAspect = (!theHighlight.IsNull() && !theHighlight->BasicFillAreaAspect().IsNull())
+ ? theHighlight->BasicFillAreaAspect()
+ : theAspect->Aspect();
+
+ const bool toDistinguish = anAspect->Distinguish();
+ const bool toMapTexture = anAspect->ToMapTexture();
+ const Graphic3d_MaterialAspect& aMatFrontSrc = anAspect->FrontMaterial();
+ const Graphic3d_MaterialAspect& aMatBackSrc = toDistinguish
+ ? anAspect->BackMaterial()
+ : aMatFrontSrc;
+ const Quantity_Color& aFrontIntColor = anAspect->InteriorColor();
+ const Quantity_Color& aBackIntColor = toDistinguish
+ ? anAspect->BackInteriorColor()
+ : aFrontIntColor;
+
+ myMatFront.Init (aMatFrontSrc, aFrontIntColor);
+ if (toDistinguish)
+ {
+ myMatBack.Init (aMatBackSrc, aBackIntColor);
+ }
+ else
+ {
+ myMatBack = myMatFront;
+ }
+
+ if (!theHighlight.IsNull()
+ && theHighlight->BasicFillAreaAspect().IsNull())
+ {
+ myMatFront.SetColor (theHighlight->ColorRGBA());
+ myMatBack .SetColor (theHighlight->ColorRGBA());
+ }
+
+ Standard_ShortReal anAlphaFront = 1.0f;
+ Standard_ShortReal anAlphaBack = 1.0f;
+ if (CheckIsTransparent (theAspect, theHighlight, anAlphaFront, anAlphaBack))
+ {
+ myMatFront.Diffuse.a() = anAlphaFront;
+ myMatBack .Diffuse.a() = anAlphaBack;
+ }
+
+ // do not update material properties in case of zero reflection mode,
+ // because GL lighting will be disabled by OpenGl_PrimitiveArray::DrawArray() anyway.
+ if (theAspect->IsNoLighting())
+ {
+ return;
+ }
+
+ if (myMatFront == myShaderManager->MaterialState().FrontMaterial()
+ && myMatBack == myShaderManager->MaterialState().BackMaterial()
+ && toDistinguish == myShaderManager->MaterialState().ToDistinguish()
+ && toMapTexture == myShaderManager->MaterialState().ToMapTexture())
+ {
+ return;
+ }
+
+ myShaderManager->UpdateMaterialStateTo (myMatFront, myMatBack, toDistinguish, toMapTexture);
+}
+
+// =======================================================================
+// function : CheckIsTransparent
+// purpose :
+// =======================================================================
+Standard_Boolean OpenGl_Context::CheckIsTransparent (const OpenGl_AspectFace* theAspect,
+ const Handle(Graphic3d_PresentationAttributes)& theHighlight,
+ Standard_ShortReal& theAlphaFront,
+ Standard_ShortReal& theAlphaBack)
+{
+ const Handle(Graphic3d_AspectFillArea3d)& anAspect = (!theHighlight.IsNull() && !theHighlight->BasicFillAreaAspect().IsNull())
+ ? theHighlight->BasicFillAreaAspect()
+ : theAspect->Aspect();
+
+ const bool toDistinguish = anAspect->Distinguish();
+ const Graphic3d_MaterialAspect& aMatFrontSrc = anAspect->FrontMaterial();
+ const Graphic3d_MaterialAspect& aMatBackSrc = toDistinguish
+ ? anAspect->BackMaterial()
+ : aMatFrontSrc;
+
+ // handling transparency
+ if (!theHighlight.IsNull()
+ && theHighlight->BasicFillAreaAspect().IsNull())
+ {
+ theAlphaFront = theHighlight->ColorRGBA().Alpha();
+ theAlphaBack = theHighlight->ColorRGBA().Alpha();
}
else
{
- core13 = myGlCore20;
+ theAlphaFront = aMatFrontSrc.Alpha();
+ theAlphaBack = aMatBackSrc .Alpha();
+ }
+
+ const bool isTransparent = theAlphaFront < 1.0f
+ || theAlphaBack < 1.0f;
+ return isTransparent;
+}
+
+// =======================================================================
+// function : SetColor4fv
+// purpose :
+// =======================================================================
+void OpenGl_Context::SetColor4fv (const OpenGl_Vec4& theColor)
+{
+ if (!myActiveProgram.IsNull())
+ {
+ myActiveProgram->SetUniform (this, myActiveProgram->GetStateLocation (OpenGl_OCCT_COLOR), theColor);
+ }
+#if !defined(GL_ES_VERSION_2_0)
+ else if (core11 != NULL)
+ {
+ core11->glColor4fv (theColor.GetData());
+ }
+#endif
+}
+
+// =======================================================================
+// function : SetTypeOfLine
+// purpose :
+// =======================================================================
+void OpenGl_Context::SetTypeOfLine (const Aspect_TypeOfLine theType,
+ const Standard_ShortReal theFactor)
+{
+ Standard_Integer aPattern = 0xFFFF;
+ switch (theType)
+ {
+ case Aspect_TOL_DASH:
+ {
+ aPattern = 0xFFC0;
+ break;
+ }
+ case Aspect_TOL_DOT:
+ {
+ aPattern = 0xCCCC;
+ break;
+ }
+ case Aspect_TOL_DOTDASH:
+ {
+ aPattern = 0xFF18;
+ break;
+ }
+ case Aspect_TOL_EMPTY:
+ case Aspect_TOL_SOLID:
+ {
+ aPattern = 0xFFFF;
+ break;
+ }
+ case Aspect_TOL_USERDEFINED:
+ {
+ aPattern = 0xFF24;
+ break;
+ }
}
- if(!hasGlCore14)
+
+ if (!myActiveProgram.IsNull())
{
- myGlVerMajor = 1;
- myGlVerMinor = 3;
+ myActiveProgram->SetUniform (this, "uPattern", aPattern);
+ myActiveProgram->SetUniform (this, "uFactor", theFactor);
return;
}
+
+#if !defined(GL_ES_VERSION_2_0)
+ if (aPattern != 0xFFFF)
+ {
+ #ifdef HAVE_GL2PS
+ if (IsFeedback())
+ {
+ gl2psEnable (GL2PS_LINE_STIPPLE);
+ }
+ #endif
+
+ if (core11 != NULL)
+ {
+ core11fwd->glEnable (GL_LINE_STIPPLE);
+
+ core11->glLineStipple (static_cast<GLint> (theFactor),
+ static_cast<GLushort> (aPattern));
+ }
+ }
else
{
- core14 = myGlCore20;
+ if (core11 != NULL)
+ {
+ core11fwd->glDisable (GL_LINE_STIPPLE);
+ }
+
+ #ifdef HAVE_GL2PS
+ if (IsFeedback())
+ {
+ gl2psDisable (GL2PS_LINE_STIPPLE);
+ }
+ #endif
+ }
+#endif
+}
+
+// =======================================================================
+// function : SetLineWidth
+// purpose :
+// =======================================================================
+void OpenGl_Context::SetLineWidth (const Standard_ShortReal theWidth)
+{
+ if (core11 != NULL)
+ {
+ // glLineWidth() is still defined within Core Profile, but has no effect with values != 1.0f
+ core11fwd->glLineWidth (theWidth * myLineWidthScale);
}
- if(!hasGlCore15)
+#ifdef HAVE_GL2PS
+ if (IsFeedback())
+ {
+ gl2psLineWidth (theWidth);
+ }
+#endif
+}
+
+// =======================================================================
+// function : SetTextureMatrix
+// purpose :
+// =======================================================================
+void OpenGl_Context::SetTextureMatrix (const Handle(Graphic3d_TextureParams)& theParams)
+{
+ if (theParams.IsNull())
{
- myGlVerMajor = 1;
- myGlVerMinor = 4;
return;
}
- else
+ else if (!myActiveProgram.IsNull())
{
- core15 = myGlCore20;
+ const GLint aUniLoc = myActiveProgram->GetStateLocation (OpenGl_OCCT_TEXTURE_TRSF2D);
+ if (aUniLoc == OpenGl_ShaderProgram::INVALID_LOCATION)
+ {
+ return;
+ }
+
+ // pack transformation parameters
+ OpenGl_Vec4 aTrsf[2];
+ aTrsf[0].x() = -theParams->Translation().x();
+ aTrsf[0].y() = -theParams->Translation().y();
+ aTrsf[0].zw() = theParams->Scale();
+ aTrsf[1].x() = std::sin (-theParams->Rotation() * static_cast<float> (M_PI / 180.0));
+ aTrsf[1].y() = std::cos (-theParams->Rotation() * static_cast<float> (M_PI / 180.0));
+ myActiveProgram->SetUniform (this, aUniLoc, 2, aTrsf);
+ return;
}
- if(!hasGlCore20)
+
+#if !defined(GL_ES_VERSION_2_0)
+ if (core11 != NULL)
{
- myGlVerMajor = 1;
- myGlVerMinor = 5;
+ GLint aMatrixMode = GL_TEXTURE;
+ ::glGetIntegerv (GL_MATRIX_MODE, &aMatrixMode);
+
+ core11->glMatrixMode (GL_TEXTURE);
+ OpenGl_Mat4 aTextureMat;
+ const Graphic3d_Vec2& aScale = theParams->Scale();
+ const Graphic3d_Vec2& aTrans = theParams->Translation();
+ Graphic3d_TransformUtils::Scale (aTextureMat, aScale.x(), aScale.y(), 1.0f);
+ Graphic3d_TransformUtils::Translate (aTextureMat, -aTrans.x(), -aTrans.y(), 0.0f);
+ Graphic3d_TransformUtils::Rotate (aTextureMat, -theParams->Rotation(), 0.0f, 0.0f, 1.0f);
+ core11->glLoadMatrixf (aTextureMat);
+ core11->glMatrixMode (aMatrixMode);
}
- else
+#endif
+}
+
+// =======================================================================
+// function : SetPointSize
+// purpose :
+// =======================================================================
+void OpenGl_Context::SetPointSize (const Standard_ShortReal theSize)
+{
+ if (!myActiveProgram.IsNull())
+ {
+ myActiveProgram->SetUniform (this, myActiveProgram->GetStateLocation (OpenGl_OCCT_POINT_SIZE), theSize);
+ #if !defined(GL_ES_VERSION_2_0)
+ //myContext->core11fwd->glEnable (GL_VERTEX_PROGRAM_POINT_SIZE);
+ #endif
+ }
+#if !defined(GL_ES_VERSION_2_0)
+ //else
{
- core20 = myGlCore20;
+ core11fwd->glPointSize (theSize);
+ if (core20fwd != NULL)
+ {
+ //myContext->core11fwd->glDisable (GL_VERTEX_PROGRAM_POINT_SIZE);
+ }
}
+#endif
}
// =======================================================================
-// function : MemoryInfo
+// function : SetPointSpriteOrigin
// purpose :
// =======================================================================
-Standard_Size OpenGl_Context::AvailableMemory() const
+void OpenGl_Context::SetPointSpriteOrigin()
{
- if (atiMem)
+#if !defined(GL_ES_VERSION_2_0)
+ if (core15fwd == NULL)
{
- // this is actually information for VBO pool
- // however because pools are mostly shared
- // it can be used for total GPU memory estimations
- GLint aMemInfo[4];
- aMemInfo[0] = 0;
- glGetIntegerv (GL_VBO_FREE_MEMORY_ATI, aMemInfo);
- // returned value is in KiB, however this maybe changed in future
- return Standard_Size(aMemInfo[0]) * 1024;
+ return;
}
- else if (nvxMem)
+
+ const int aNewState = !myActiveProgram.IsNull() ? GL_UPPER_LEFT : GL_LOWER_LEFT;
+ if (myPointSpriteOrig != aNewState)
{
- // current available dedicated video memory (in KiB), currently unused GPU memory
- GLint aMemInfo = 0;
- glGetIntegerv (GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX, &aMemInfo);
- return Standard_Size(aMemInfo) * 1024;
+ myPointSpriteOrig = aNewState;
+ core15fwd->glPointParameteri (GL_POINT_SPRITE_COORD_ORIGIN, aNewState);
}
- return 0;
+#endif
}
// =======================================================================
-// function : MemoryInfo
+// function : SetGlNormalizeEnabled
// purpose :
// =======================================================================
-TCollection_AsciiString OpenGl_Context::MemoryInfo() const
+Standard_Boolean OpenGl_Context::SetGlNormalizeEnabled (Standard_Boolean isEnabled)
{
- TCollection_AsciiString anInfo;
- if (atiMem)
+ if (isEnabled == myIsGlNormalizeEnabled)
{
- GLint aValues[4];
- memset (aValues, 0, sizeof(aValues));
- glGetIntegerv (GL_VBO_FREE_MEMORY_ATI, aValues);
+ return myIsGlNormalizeEnabled;
+ }
- // total memory free in the pool
- anInfo += TCollection_AsciiString (" GPU free memory: ") + (aValues[0] / 1024) + " MiB\n";
+ Standard_Boolean anOldGlNormalize = myIsGlNormalizeEnabled;
- // largest available free block in the pool
- anInfo += TCollection_AsciiString (" Largest free block: ") + (aValues[1] / 1024) + " MiB\n";
- if (aValues[2] != aValues[0])
+ myIsGlNormalizeEnabled = isEnabled;
+
+#if !defined(GL_ES_VERSION_2_0)
+ if (core11 != NULL)
+ {
+ if (isEnabled)
{
- // total auxiliary memory free
- anInfo += TCollection_AsciiString (" Free memory: ") + (aValues[2] / 1024) + " MiB\n";
+ ::glEnable (GL_NORMALIZE);
+ }
+ else
+ {
+ ::glDisable (GL_NORMALIZE);
}
}
- else if (nvxMem)
+#endif
+
+ return anOldGlNormalize;
+}
+
+// =======================================================================
+// function : SetPolygonMode
+// purpose :
+// =======================================================================
+Standard_Integer OpenGl_Context::SetPolygonMode (const Standard_Integer theMode)
+{
+ if (myPolygonMode == theMode)
{
- //current available dedicated video memory (in KiB), currently unused GPU memory
- GLint aValue = 0;
- glGetIntegerv (GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX, &aValue);
- anInfo += TCollection_AsciiString (" GPU free memory: ") + (aValue / 1024) + " MiB\n";
+ return myPolygonMode;
+ }
- // dedicated video memory, total size (in KiB) of the GPU memory
- GLint aDedicated = 0;
- glGetIntegerv (GL_GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX, &aDedicated);
- anInfo += TCollection_AsciiString (" GPU memory: ") + (aDedicated / 1024) + " MiB\n";
+ const Standard_Integer anOldPolygonMode = myPolygonMode;
- // total available memory, total size (in KiB) of the memory available for allocations
- glGetIntegerv (GL_GPU_MEMORY_INFO_TOTAL_AVAILABLE_MEMORY_NVX, &aValue);
- if (aValue != aDedicated)
+ myPolygonMode = theMode;
+
+#if !defined(GL_ES_VERSION_2_0)
+ ::glPolygonMode (GL_FRONT_AND_BACK, (GLenum)theMode);
+#endif
+
+ return anOldPolygonMode;
+}
+
+// =======================================================================
+// function : SetPolygonHatchEnabled
+// purpose :
+// =======================================================================
+bool OpenGl_Context::SetPolygonHatchEnabled (const bool theIsEnabled)
+{
+ if (myHatchStyles.IsNull())
+ {
+ return false;
+ }
+ else if (myHatchStyles->IsEnabled() == theIsEnabled)
+ {
+ return theIsEnabled;
+ }
+
+ return myHatchStyles->SetEnabled (this, theIsEnabled);
+}
+
+// =======================================================================
+// function : SetPolygonHatchStyle
+// purpose :
+// =======================================================================
+Standard_Integer OpenGl_Context::SetPolygonHatchStyle (const Handle(Graphic3d_HatchStyle)& theStyle)
+{
+ if (theStyle.IsNull())
+ {
+ return 0;
+ }
+
+ if (myHatchStyles.IsNull())
+ {
+ if (!GetResource ("OpenGl_LineAttributes", myHatchStyles))
{
- // different only for special configurations
- anInfo += TCollection_AsciiString (" Total memory: ") + (aValue / 1024) + " MiB\n";
+ // share and register for release once the resource is no longer used
+ myHatchStyles = new OpenGl_LineAttributes();
+ ShareResource ("OpenGl_LineAttributes", myHatchStyles);
}
}
- return anInfo;
-}
+ if (myHatchStyles->TypeOfHatch() == theStyle->HatchType())
+ {
+ return theStyle->HatchType();
+ }
+ return myHatchStyles->SetTypeOfHatch (this, theStyle);
+}
// =======================================================================
-// function : GetResource
+// function : SetPolygonOffset
// purpose :
// =======================================================================
-const Handle(OpenGl_Resource)& OpenGl_Context::GetResource (const TCollection_AsciiString& theKey) const
+void OpenGl_Context::SetPolygonOffset (const Graphic3d_PolygonOffset& theOffset)
{
- return mySharedResources->IsBound (theKey) ? mySharedResources->Find (theKey) : NULL_GL_RESOURCE;
+ const bool toFillOld = (myPolygonOffset.Mode & Aspect_POM_Fill) == Aspect_POM_Fill;
+ const bool toFillNew = (theOffset.Mode & Aspect_POM_Fill) == Aspect_POM_Fill;
+ if (toFillNew != toFillOld)
+ {
+ if (toFillNew)
+ {
+ glEnable (GL_POLYGON_OFFSET_FILL);
+ }
+ else
+ {
+ glDisable (GL_POLYGON_OFFSET_FILL);
+ }
+ }
+
+#if !defined(GL_ES_VERSION_2_0)
+ const bool toLineOld = (myPolygonOffset.Mode & Aspect_POM_Line) == Aspect_POM_Line;
+ const bool toLineNew = (theOffset.Mode & Aspect_POM_Line) == Aspect_POM_Line;
+ if (toLineNew != toLineOld)
+ {
+ if (toLineNew)
+ {
+ glEnable (GL_POLYGON_OFFSET_LINE);
+ }
+ else
+ {
+ glDisable (GL_POLYGON_OFFSET_LINE);
+ }
+ }
+
+ const bool toPointOld = (myPolygonOffset.Mode & Aspect_POM_Point) == Aspect_POM_Point;
+ const bool toPointNew = (theOffset.Mode & Aspect_POM_Point) == Aspect_POM_Point;
+ if (toPointNew != toPointOld)
+ {
+ if (toPointNew)
+ {
+ glEnable (GL_POLYGON_OFFSET_POINT);
+ }
+ else
+ {
+ glDisable (GL_POLYGON_OFFSET_POINT);
+ }
+ }
+#endif
+
+ if (myPolygonOffset.Factor != theOffset.Factor
+ || myPolygonOffset.Units != theOffset.Units)
+ {
+ glPolygonOffset (theOffset.Factor, theOffset.Units);
+ }
+ myPolygonOffset = theOffset;
}
// =======================================================================
-// function : ShareResource
+// function : ApplyModelWorldMatrix
// purpose :
// =======================================================================
-Standard_Boolean OpenGl_Context::ShareResource (const TCollection_AsciiString& theKey,
- const Handle(OpenGl_Resource)& theResource)
+void OpenGl_Context::ApplyModelWorldMatrix()
{
- if (theKey.IsEmpty() || theResource.IsNull())
+ if (myShaderManager->ModelWorldState().ModelWorldMatrix() != ModelWorldState.Current())
{
- return Standard_False;
+ myShaderManager->UpdateModelWorldStateTo (ModelWorldState.Current());
}
- return mySharedResources->Bind (theKey, theResource);
}
// =======================================================================
-// function : ReleaseResource
+// function : ApplyWorldViewMatrix
// purpose :
// =======================================================================
-void OpenGl_Context::ReleaseResource (const TCollection_AsciiString& theKey,
- const Standard_Boolean theToDelay)
+void OpenGl_Context::ApplyWorldViewMatrix()
{
- if (!mySharedResources->IsBound (theKey))
+ if (myShaderManager->ModelWorldState().ModelWorldMatrix() != THE_IDENTITY_MATRIX)
{
- return;
+ myShaderManager->UpdateModelWorldStateTo (THE_IDENTITY_MATRIX);
}
- const Handle(OpenGl_Resource)& aRes = mySharedResources->Find (theKey);
- if (aRes->GetRefCount() > 1)
+ if (myShaderManager->WorldViewState().WorldViewMatrix() != WorldViewState.Current())
{
- return;
+ myShaderManager->UpdateWorldViewStateTo (WorldViewState.Current());
}
+}
- if (theToDelay)
+// =======================================================================
+// function : ApplyModelViewMatrix
+// purpose :
+// =======================================================================
+void OpenGl_Context::ApplyModelViewMatrix()
+{
+ if (myShaderManager->ModelWorldState().ModelWorldMatrix() != ModelWorldState.Current())
{
- myDelayed->Bind (theKey, 1);
+ myShaderManager->UpdateModelWorldStateTo (ModelWorldState.Current());
}
- else
+ if (myShaderManager->WorldViewState().WorldViewMatrix() != WorldViewState.Current())
{
- aRes->Release (this);
- mySharedResources->UnBind (theKey);
+ myShaderManager->UpdateWorldViewStateTo (WorldViewState.Current());
}
}
// =======================================================================
-// function : DelayedRelease
+// function : ApplyProjectionMatrix
// purpose :
// =======================================================================
-void OpenGl_Context::DelayedRelease (Handle(OpenGl_Resource)& theResource)
+void OpenGl_Context::ApplyProjectionMatrix()
{
- myReleaseQueue->Push (theResource);
- theResource.Nullify();
+ if (myShaderManager->ProjectionState().ProjectionMatrix() != ProjectionState.Current())
+ {
+ myShaderManager->UpdateProjectionStateTo (ProjectionState.Current());
+ }
}
// =======================================================================
-// function : ReleaseDelayed
+// function : EnableFeatures
// purpose :
// =======================================================================
-void OpenGl_Context::ReleaseDelayed()
+void OpenGl_Context::EnableFeatures() const
{
- // release queued elements
- while (!myReleaseQueue->IsEmpty())
+ //
+}
+
+// =======================================================================
+// function : DisableFeatures
+// purpose :
+// =======================================================================
+void OpenGl_Context::DisableFeatures() const
+{
+ // Disable stuff that's likely to slow down glDrawPixels.
+ glDisable(GL_DITHER);
+ glDisable(GL_BLEND);
+ glDisable(GL_DEPTH_TEST);
+ glDisable(GL_STENCIL_TEST);
+
+#if !defined(GL_ES_VERSION_2_0)
+ if (core11 == NULL)
{
- myReleaseQueue->Front()->Release (this);
- myReleaseQueue->Pop();
+ return;
}
- // release delayed shared resoruces
- NCollection_Vector<TCollection_AsciiString> aDeadList;
- for (NCollection_DataMap<TCollection_AsciiString, Standard_Integer>::Iterator anIter (*myDelayed);
- anIter.More(); anIter.Next())
+ glDisable(GL_TEXTURE_1D);
+ glDisable(GL_TEXTURE_2D);
+
+ glDisable(GL_LIGHTING);
+ glDisable(GL_ALPHA_TEST);
+ glDisable(GL_FOG);
+ glDisable(GL_LOGIC_OP);
+
+ glPixelTransferi(GL_MAP_COLOR, GL_FALSE);
+ glPixelTransferi(GL_RED_SCALE, 1);
+ glPixelTransferi(GL_RED_BIAS, 0);
+ glPixelTransferi(GL_GREEN_SCALE, 1);
+ glPixelTransferi(GL_GREEN_BIAS, 0);
+ glPixelTransferi(GL_BLUE_SCALE, 1);
+ glPixelTransferi(GL_BLUE_BIAS, 0);
+ glPixelTransferi(GL_ALPHA_SCALE, 1);
+ glPixelTransferi(GL_ALPHA_BIAS, 0);
+
+ if ((myGlVerMajor >= 1) && (myGlVerMinor >= 2))
{
- if (++anIter.ChangeValue() <= 2)
- {
- continue; // postpone release one more frame to ensure noone use it periodically
- }
+ if (CheckExtension ("GL_CONVOLUTION_1D_EXT"))
+ glDisable(GL_CONVOLUTION_1D_EXT);
- const TCollection_AsciiString& aKey = anIter.Key();
- if (!mySharedResources->IsBound (aKey))
- {
- // mixed unshared strategy delayed/undelayed was used!
- aDeadList.Append (aKey);
- continue;
- }
+ if (CheckExtension ("GL_CONVOLUTION_2D_EXT"))
+ glDisable(GL_CONVOLUTION_2D_EXT);
- Handle(OpenGl_Resource)& aRes = mySharedResources->ChangeFind (aKey);
- if (aRes->GetRefCount() > 1)
- {
- // should be only 1 instance in mySharedResources
- // if not - resource was reused again
- aDeadList.Append (aKey);
- continue;
- }
+ if (CheckExtension ("GL_SEPARABLE_2D_EXT"))
+ glDisable(GL_SEPARABLE_2D_EXT);
- // release resource if no one requiested it more than 2 redraw calls
- aRes->Release (this);
- mySharedResources->UnBind (aKey);
- aDeadList.Append (aKey);
- }
+ if (CheckExtension ("GL_SEPARABLE_2D_EXT"))
+ glDisable(GL_HISTOGRAM_EXT);
- for (Standard_Integer anIter = 0; anIter < aDeadList.Length(); ++anIter)
- {
- myDelayed->UnBind (aDeadList.Value (anIter));
+ if (CheckExtension ("GL_MINMAX_EXT"))
+ glDisable(GL_MINMAX_EXT);
+
+ if (CheckExtension ("GL_TEXTURE_3D_EXT"))
+ glDisable(GL_TEXTURE_3D_EXT);
}
+#endif
+}
+
+// =======================================================================
+// function : SetColorMask
+// purpose :
+// =======================================================================
+bool OpenGl_Context::SetColorMask (bool theToWriteColor)
+{
+ const GLboolean toWrite = theToWriteColor ? GL_TRUE : GL_FALSE;
+ glColorMask (toWrite, toWrite, toWrite, toWrite);
+
+ const bool anOldValue = myColorMask;
+ myColorMask = theToWriteColor;
+ return anOldValue;
}
projects / occt.git / blobdiff