// Created on: 2012-01-26
// Created by: Kirill GAVRILOV
-// Copyright (c) 2012-2012 OPEN CASCADE SAS
+// Copyright (c) 2012-2014 OPEN CASCADE SAS
//
-// The content of this file is subject to the Open CASCADE Technology Public
-// License Version 6.5 (the "License"). You may not use the content of this file
-// except in compliance with the License. Please obtain a copy of the License
-// at http://www.opencascade.org and read it completely before using this file.
+// This file is part of Open CASCADE Technology software library.
//
-// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
-// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
+// 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.
//
-// The Original Code and all software distributed under the License is
-// distributed on an "AS IS" basis, without warranty of any kind, and the
-// Initial Developer hereby disclaims all such warranties, including without
-// limitation, any warranties of merchantability, fitness for a particular
-// purpose or non-infringement. Please see the License for the specific terms
-// and conditions governing the rights and limitations under the License.
+// Alternatively, this file may be used under the terms of Open CASCADE
+// commercial license or contractual agreement.
#ifndef _OpenGl_Context_H__
#define _OpenGl_Context_H__
#include <Aspect_Display.hxx>
#include <Aspect_RenderingContext.hxx>
#include <Handle_OpenGl_Context.hxx>
+#include <Handle_OpenGl_FrameBuffer.hxx>
+#include <Handle_OpenGl_Sampler.hxx>
#include <Handle_OpenGl_ShaderManager.hxx>
+#include <Handle_OpenGl_ShaderProgram.hxx>
#include <NCollection_DataMap.hxx>
#include <NCollection_Map.hxx>
#include <NCollection_Handle.hxx>
-#include <NCollection_Queue.hxx>
+#include <NCollection_List.hxx>
#include <Message.hxx>
#include <OpenGl_Caps.hxx>
+#include <OpenGl_Vec.hxx>
#include <OpenGl_Resource.hxx>
#include <Standard_Transient.hxx>
#include <TCollection_AsciiString.hxx>
-#include <Handle_OpenGl_Context.hxx>
+#include <TColStd_PackedMapOfInteger.hxx>
#include <OpenGl_Clipping.hxx>
+#include <OpenGl_GlCore11.hxx>
+#include <OpenGl_Utils.hxx>
//! Forward declarations
-struct OpenGl_GlCore12;
-struct OpenGl_GlCore13;
-struct OpenGl_GlCore14;
-struct OpenGl_GlCore15;
-struct OpenGl_GlCore20;
-struct OpenGl_ArbVBO;
+#if defined(__APPLE__)
+ #import <TargetConditionals.h>
+ #if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
+ #ifdef __OBJC__
+ @class EAGLContext;
+ #else
+ struct EAGLContext;
+ #endif
+ #else
+ #ifdef __OBJC__
+ @class NSOpenGLContext;
+ #else
+ struct NSOpenGLContext;
+ #endif
+ #endif
+#endif
+
+struct OpenGl_GlFunctions;
struct OpenGl_ArbTBO;
struct OpenGl_ArbIns;
struct OpenGl_ArbDbg;
-struct OpenGl_ExtFBO;
+struct OpenGl_ArbFBO;
+struct OpenGl_ArbFBOBlit;
struct OpenGl_ExtGS;
+struct OpenGl_ArbTexBindless;
+
+template<typename theBaseClass_t> struct OpenGl_TmplCore12;
+typedef OpenGl_TmplCore12<OpenGl_GlCore11> OpenGl_GlCore12;
+typedef OpenGl_TmplCore12<OpenGl_GlCore11Fwd> OpenGl_GlCore12Fwd;
+
+struct OpenGl_GlCore13;
+struct OpenGl_GlCore13Fwd;
+
+template<typename theBaseClass_t> struct OpenGl_TmplCore14;
+typedef OpenGl_TmplCore14<OpenGl_GlCore13> OpenGl_GlCore14;
+typedef OpenGl_TmplCore14<OpenGl_GlCore13Fwd> OpenGl_GlCore14Fwd;
+
+template<typename theBaseClass_t> struct OpenGl_TmplCore15;
+typedef OpenGl_TmplCore15<OpenGl_GlCore14> OpenGl_GlCore15;
+typedef OpenGl_TmplCore15<OpenGl_GlCore14Fwd> OpenGl_GlCore15Fwd;
+
+template<typename theBaseClass_t> struct OpenGl_TmplCore20;
+typedef OpenGl_TmplCore20<OpenGl_GlCore15> OpenGl_GlCore20;
+typedef OpenGl_TmplCore20<OpenGl_GlCore15Fwd> OpenGl_GlCore20Fwd;
+
+template<typename theBaseClass_t> struct OpenGl_TmplCore21;
+typedef OpenGl_TmplCore21<OpenGl_GlCore20> OpenGl_GlCore21;
+typedef OpenGl_TmplCore21<OpenGl_GlCore20Fwd> OpenGl_GlCore21Fwd;
+
+template<typename theBaseClass_t> struct OpenGl_TmplCore30;
+typedef OpenGl_TmplCore30<OpenGl_GlCore21> OpenGl_GlCore30;
+typedef OpenGl_TmplCore30<OpenGl_GlCore21Fwd> OpenGl_GlCore30Fwd;
+
+template<typename theBaseClass_t> struct OpenGl_TmplCore31;
+typedef OpenGl_TmplCore31<OpenGl_GlCore30> OpenGl_GlCore31Back;
+typedef OpenGl_TmplCore31<OpenGl_GlCore30Fwd> OpenGl_GlCore31;
+
+template<typename theBaseClass_t> struct OpenGl_TmplCore32;
+typedef OpenGl_TmplCore32<OpenGl_GlCore31Back> OpenGl_GlCore32Back;
+typedef OpenGl_TmplCore32<OpenGl_GlCore31> OpenGl_GlCore32;
+
+template<typename theBaseClass_t> struct OpenGl_TmplCore33;
+typedef OpenGl_TmplCore33<OpenGl_GlCore32Back> OpenGl_GlCore33Back;
+typedef OpenGl_TmplCore33<OpenGl_GlCore32> OpenGl_GlCore33;
+
+template<typename theBaseClass_t> struct OpenGl_TmplCore40;
+typedef OpenGl_TmplCore40<OpenGl_GlCore33Back> OpenGl_GlCore40Back;
+typedef OpenGl_TmplCore40<OpenGl_GlCore33> OpenGl_GlCore40;
+
+template<typename theBaseClass_t> struct OpenGl_TmplCore41;
+typedef OpenGl_TmplCore41<OpenGl_GlCore40Back> OpenGl_GlCore41Back;
+typedef OpenGl_TmplCore41<OpenGl_GlCore40> OpenGl_GlCore41;
+
+template<typename theBaseClass_t> struct OpenGl_TmplCore42;
+typedef OpenGl_TmplCore42<OpenGl_GlCore41Back> OpenGl_GlCore42Back;
+typedef OpenGl_TmplCore42<OpenGl_GlCore41> OpenGl_GlCore42;
+
+template<typename theBaseClass_t> struct OpenGl_TmplCore43;
+typedef OpenGl_TmplCore43<OpenGl_GlCore42Back> OpenGl_GlCore43Back;
+typedef OpenGl_TmplCore43<OpenGl_GlCore42> OpenGl_GlCore43;
+
+template<typename theBaseClass_t> struct OpenGl_TmplCore44;
+typedef OpenGl_TmplCore44<OpenGl_GlCore43Back> OpenGl_GlCore44Back;
+typedef OpenGl_TmplCore44<OpenGl_GlCore43> OpenGl_GlCore44;
//! This class generalize access to the GL context and available extensions.
//!
-//! Functions are grouped into structures and accessed as fields.
-//! You should check the group for NULL before usage (if group is not NULL
-//! then all functions are available):
+//! Functions related to specific OpenGL version or extension are grouped into structures which can be accessed as fields of this class.
+//! The most simple way to check that required functionality is available - is NULL check for the group:
//! @code
//! if (myContext->core20 != NULL)
//! {
//! }
//! @endcode
//!
-//! Current implementation provide access to OpenGL core functionality up to 2.0 version
-//! (core12, core13, core14, core15, fields core20).
-//! within several extensions (arbVBO, extFBO, etc.).
+//! Current implementation provide access to OpenGL core functionality up to 4.4 version (core12, core13, core14, core15, fields core20)
+//! as well as several extensions (arbTBO, arbFBO, etc.).
+//!
+//! OpenGL context might be initialized in Core Profile. In this case deprecated functionality become unavailable.
+//! To make code easily adaptable to wide range of OpenGL versions, function sets related to each version has two kinds of suffixes:
+//! - "back" for version 3.2+.
+//! Represents function set for Backward-Compatible Profile.
+//! Function sets without this suffix represents core profile.
+//! - "fwd" for version 3.0-.
+//! Represents non-deprecated function set of earlier OpenGL versions, which are still available within OpenGL 3.2 Core Profile.
+//! Function sets without this suffix represents complete list of functions related to specific OpenGL version.
+//!
+//! To select which core** function set should be used in specific case:
+//! - Determine the minimal OpenGL version required for implemented functionality and use it to access all functions.
+//! For example, if algorithm requires OpenGL 2.1+, it is better to write core20fwd->glEnable() rather than core11fwd->glEnable() for uniformity.
+//! - If functionality will work within Core Profile, use function sets with appropriate suffix.
+//! - Validate minimal requirements at initialization/creation time and omit checks within code where algorithm should be already initialized.
+//! Properly escape code incompatible with Core Profile. The simplest way to check Core Profile is "if (core11 == NULL)".
//!
//! Simplified extensions classification:
//! - prefixed with NV, AMD, ATI are vendor-specific (however may be provided by other vendors in some cases);
//! In this case developer should be careful because different specification may differ
//! in aspects (like enumeration values and error-handling).
//!
-//! Notice that some systems provide mechanisms to simultaneously incorporate with GL contexts
-//! with different capabilities. Thats why OpenGl_Context should be initialized and used
-//! for each GL context individually.
+//! Notice that some systems provide mechanisms to simultaneously incorporate with GL contexts with different capabilities.
+//! For this reason OpenGl_Context should be initialized and used for each GL context independently.
class OpenGl_Context : public Standard_Transient
{
public:
//! Destructor.
Standard_EXPORT virtual ~OpenGl_Context();
+ //! Release all resources, including shared ones
+ Standard_EXPORT void forcedRelease();
+
//! Share GL context resources.
//! theShareCtx - handle to context to retrieve handles to shared resources.
Standard_EXPORT void Share (const Handle(OpenGl_Context)& theShareCtx);
- //! Initialize available extensions.
- //! GL context should be active!
- Standard_EXPORT Standard_Boolean Init();
+ //! Initialize class from currently bound OpenGL context. Method should be called only once.
+ //! @return false if no GL context is bound to the current thread
+ Standard_EXPORT Standard_Boolean Init (const Standard_Boolean theIsCoreProfile = Standard_False);
//! @return true if this context is valid (has been initialized)
inline Standard_Boolean IsValid() const
return myIsInitialized;
}
-#if defined(_WIN32)
+#if defined(HAVE_EGL)
+ //! Initialize class from specified surface and rendering context. Method should be called only once.
+ //! @return false if OpenGL context can not be bound to specified surface
+ Standard_EXPORT Standard_Boolean Init (const Aspect_Drawable theEglSurface,
+ const Aspect_Display theEglDisplay,
+ const Aspect_RenderingContext theEglContext,
+ const Standard_Boolean theIsCoreProfile = Standard_False);
+#elif defined(_WIN32)
+ //! Initialize class from specified window and rendering context. Method should be called only once.
+ //! @return false if OpenGL context can not be bound to specified window
Standard_EXPORT Standard_Boolean Init (const Aspect_Handle theWindow,
const Aspect_Handle theWindowDC,
- const Aspect_RenderingContext theGContext);
+ const Aspect_RenderingContext theGContext,
+ const Standard_Boolean theIsCoreProfile = Standard_False);
+
+ //! @return the window handle (HWND) currently bound to this OpenGL context
+ inline Aspect_Handle Window() const
+ {
+ return myWindow;
+ }
+
#elif defined(__APPLE__) && !defined(MACOSX_USE_GLX)
- Standard_EXPORT Standard_Boolean Init (const void* theGContext);
+ #if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
+
+ //! Initialize class from specified OpenGL ES context (EAGLContext). Method should be called only once.
+ Standard_EXPORT Standard_Boolean Init (EAGLContext* theGContext,
+ const Standard_Boolean theIsCoreProfile = Standard_False);
+ #else
+
+ //! Initialize class from specified OpenGL context (NSOpenGLContext). Method should be called only once.
+ Standard_EXPORT Standard_Boolean Init (NSOpenGLContext* theGContext,
+ const Standard_Boolean theIsCoreProfile = Standard_False);
+ #endif
#else
+
+ //! Initialize class from specified window and rendering context. Method should be called only once.
+ //! @return false if OpenGL context can not be bound to specified window
Standard_EXPORT Standard_Boolean Init (const Aspect_Drawable theWindow,
const Aspect_Display theDisplay,
- const Aspect_RenderingContext theGContext);
+ const Aspect_RenderingContext theGContext,
+ const Standard_Boolean theIsCoreProfile = Standard_False);
+
+ //! @return the window handle (GLXDrawable) currently bound to this OpenGL context
+ inline Aspect_Drawable Window() const
+ {
+ return myWindow;
+ }
#endif
+ //! Read OpenGL version information from active context.
+ Standard_EXPORT static void ReadGlVersion (Standard_Integer& theGlVerMajor,
+ Standard_Integer& theGlVerMinor);
+
//! Check if theExtName extension is supported by active GL context.
Standard_EXPORT Standard_Boolean CheckExtension (const char* theExtName) const;
//! @return true if detected GL version is greater or equal to requested one.
inline Standard_Boolean IsGlGreaterEqual (const Standard_Integer theVerMajor,
- const Standard_Integer theVerMinor)
+ const Standard_Integer theVerMinor) const
{
return (myGlVerMajor > theVerMajor)
|| (myGlVerMajor == theVerMajor && myGlVerMinor >= theVerMinor);
//! Swap front/back buffers for this GL context (should be activated before!).
Standard_EXPORT void SwapBuffers();
- //! Return true if active mode is GL_FEEDBACK (cached state)
- Standard_EXPORT Standard_Boolean IsFeedback() const;
+ //! Return true if active mode is GL_RENDER (cached state)
+ Standard_Boolean IsRender() const
+ {
+ #if !defined(GL_ES_VERSION_2_0)
+ return myRenderMode == GL_RENDER;
+ #else
+ return Standard_True;
+ #endif
+ }
- //! Setup feedback mode cached state
- Standard_EXPORT void SetFeedback (const Standard_Boolean theFeedbackOn);
+ //! Return true if active mode is GL_FEEDBACK (cached state)
+ Standard_Boolean IsFeedback() const
+ {
+ #if !defined(GL_ES_VERSION_2_0)
+ return myRenderMode == GL_FEEDBACK;
+ #else
+ return Standard_False;
+ #endif
+ }
//! This function retrieves information from GL about free GPU memory that is:
//! - OS-dependent. On some OS it is per-process and on others - for entire system.
public:
+ //! Either GL_CLAMP_TO_EDGE (1.2+) or GL_CLAMP (1.1).
+ Standard_Integer TextureWrapClamp() const { return myTexClamp; }
+
//! @return maximum degree of anisotropy texture filter
Standard_EXPORT Standard_Integer MaxDegreeOfAnisotropy() const;
Standard_EXPORT Standard_Integer MaxTextureSize() const;
//! Get maximum number of clip planes supported by OpenGl.
- //! This value is implementation dependant. At least 6
+ //! This value is implementation dependent. At least 6
//! planes should be supported by OpenGl (see specs).
//! @return value for GL_MAX_CLIP_PLANES
Standard_EXPORT Standard_Integer MaxClipPlanes() const;
+ //! Returns true if VBO is supported and permitted.
+ inline bool ToUseVbo() const
+ {
+ return core15fwd != NULL
+ && !caps->vboDisable;
+ }
+
+ //! @return cached state of GL_NORMALIZE.
+ Standard_Boolean IsGlNormalizeEnabled() const { return myIsGlNormalizeEnabled; }
+
+ //! Sets GL_NORMALIZE enabled or disabled.
+ //! @return old value of the flag
+ Standard_EXPORT Standard_Boolean SetGlNormalizeEnabled (Standard_Boolean isEnabled);
+
+ //! Applies matrix stored in ModelWorldState to OpenGl.
+ void ApplyModelWorldMatrix();
+
+ //! Applies matrix stored in WorldViewState to OpenGl.
+ void ApplyWorldViewMatrix();
+
+ //! Applies combination of matrices stored in ModelWorldState and WorldViewState to OpenGl.
+ void ApplyModelViewMatrix();
+
+ //! Applies matrix stored in ProjectionState to OpenGl.
+ void ApplyProjectionMatrix();
+
public:
- //! @return messanger instance
- inline const Handle_Message_Messenger& Messanger() const
+ //! @return messenger instance
+ inline const Handle(Message_Messenger)& Messenger() const
{
return ::Message::DefaultMessenger();
}
const unsigned int theSeverity,
const TCollection_ExtendedString& theMessage);
+ //! Adds a filter for messages with theId and theSource (GL_DEBUG_SOURCE_)
+ Standard_EXPORT Standard_Boolean ExcludeMessage (const unsigned int theSource,
+ const unsigned int theId);
+
+ //! Removes a filter for messages with theId and theSource (GL_DEBUG_SOURCE_)
+ Standard_EXPORT Standard_Boolean IncludeMessage (const unsigned int theSource,
+ const unsigned int theId);
+
+ //! @return true if OpenGl context supports left and
+ //! right rendering buffers.
+ Standard_Boolean HasStereoBuffers() const
+ {
+ #if !defined(GL_ES_VERSION_2_0)
+ return myIsStereoBuffers;
+ #else
+ return Standard_False;
+ #endif
+ }
+
+public: //! @name methods to alter or retrieve current state
+
+ //! Return active read buffer.
+ Standard_Integer ReadBuffer() { return myReadBuffer; }
+
+ //! Switch read buffer, wrapper for ::glReadBuffer().
+ Standard_EXPORT void SetReadBuffer (const Standard_Integer theReadBuffer);
+
+ //! Return active draw buffer.
+ Standard_Integer DrawBuffer() { return myDrawBuffer; }
+
+ //! Switch draw buffer, wrapper for ::glDrawBuffer().
+ Standard_EXPORT void SetDrawBuffer (const Standard_Integer theDrawBuffer);
+
+ //! Switch read/draw buffers.
+ void SetReadDrawBuffer (const Standard_Integer theBuffer)
+ {
+ SetReadBuffer (theBuffer);
+ SetDrawBuffer (theBuffer);
+ }
+
+ //! Fetch OpenGl context state. This class tracks value of several OpenGl
+ //! state variables. Consulting the cached values is quicker than
+ //! doing the same via OpenGl API. Call this method if any of the controlled
+ //! OpenGl state variables has a possibility of being out-of-date.
+ Standard_EXPORT void FetchState();
+
+ //! @return active GLSL program
+ const Handle(OpenGl_ShaderProgram)& ActiveProgram() const
+ {
+ return myActiveProgram;
+ }
+
+ //! @return OpenGL sampler object used to override default texture parameters
+ const Handle(OpenGl_Sampler)& TextureSampler()
+ {
+ return myTexSampler;
+ }
+
+ //! Bind specified program to current context,
+ //! or unbind previous one when NULL specified.
+ //! @return true if some program is bound to context
+ Standard_EXPORT Standard_Boolean BindProgram (const Handle(OpenGl_ShaderProgram)& theProgram);
+
+ //! Setup current color.
+ Standard_EXPORT void SetColor4fv (const OpenGl_Vec4& theColor);
+
+ //! Setup point size.
+ Standard_EXPORT void SetPointSize (const Standard_ShortReal theSize);
+
+ //! Bind default Vertex Array Object
+ Standard_EXPORT void BindDefaultVao();
+
+ //! Default Frame Buffer Object.
+ const Handle(OpenGl_FrameBuffer)& DefaultFrameBuffer() const
+ {
+ return myDefaultFbo;
+ }
+
+ //! Setup new Default Frame Buffer Object and return previously set.
+ //! This call doesn't change Active FBO!
+ Standard_EXPORT Handle(OpenGl_FrameBuffer) SetDefaultFrameBuffer (const Handle(OpenGl_FrameBuffer)& theFbo);
+
+ //! Return debug context initialization state.
+ Standard_Boolean IsDebugContext() const
+ {
+ return myIsGlDebugCtx;
+ }
+
private:
//! Wrapper to system function to retrieve GL function pointer by name.
Standard_EXPORT void* findProc (const char* theFuncName);
- //! Read OpenGL version information from active context.
- Standard_EXPORT void readGlVersion();
+ //! Print error if not all functions have been exported by context for reported version.
+ //! Note that this will never happen when using GLX, since returned functions can not be validated.
+ //! @param theGlVerMajor the OpenGL major version with missing functions
+ //! @param theGlVerMinor the OpenGL minor version with missing functions
+ Standard_EXPORT void checkWrongVersion (const Standard_Integer theGlVerMajor,
+ const Standard_Integer theGlVerMinor);
//! Private initialization function that should be called only once.
- Standard_EXPORT void init();
-
-public: // core profiles
-
- OpenGl_GlCore12* core12;
- OpenGl_GlCore13* core13;
- OpenGl_GlCore14* core14;
- OpenGl_GlCore15* core15;
- OpenGl_GlCore20* core20;
+ Standard_EXPORT void init (const Standard_Boolean theIsCoreProfile);
+
+public: //! @name core profiles
+
+ OpenGl_GlCore11* core11; //!< OpenGL 1.1 core functionality
+ OpenGl_GlCore11Fwd* core11fwd; //!< OpenGL 1.1 without deprecated entry points
+ OpenGl_GlCore15* core15; //!< OpenGL 1.5 core functionality
+ OpenGl_GlCore15Fwd* core15fwd; //!< OpenGL 1.5 without deprecated entry points
+ OpenGl_GlCore20* core20; //!< OpenGL 2.0 core functionality (includes 1.5)
+ OpenGl_GlCore20Fwd* core20fwd; //!< OpenGL 2.0 without deprecated entry points
+ OpenGl_GlCore32* core32; //!< OpenGL 3.2 core profile
+ OpenGl_GlCore32Back* core32back; //!< OpenGL 3.2 backward compatibility profile
+ OpenGl_GlCore33* core33; //!< OpenGL 3.3 core profile
+ OpenGl_GlCore33Back* core33back; //!< OpenGL 3.3 backward compatibility profile
+ OpenGl_GlCore41* core41; //!< OpenGL 4.1 core profile
+ OpenGl_GlCore41Back* core41back; //!< OpenGL 4.1 backward compatibility profile
+ OpenGl_GlCore42* core42; //!< OpenGL 4.2 core profile
+ OpenGl_GlCore42Back* core42back; //!< OpenGL 4.2 backward compatibility profile
+ OpenGl_GlCore43* core43; //!< OpenGL 4.3 core profile
+ OpenGl_GlCore43Back* core43back; //!< OpenGL 4.3 backward compatibility profile
+ OpenGl_GlCore44* core44; //!< OpenGL 4.4 core profile
+ OpenGl_GlCore44Back* core44back; //!< OpenGL 4.4 backward compatibility profile
Handle(OpenGl_Caps) caps; //!< context options
-public: // extensions
-
- Standard_Boolean arbNPTW; //!< GL_ARB_texture_non_power_of_two
- OpenGl_ArbVBO* arbVBO; //!< GL_ARB_vertex_buffer_object
- OpenGl_ArbTBO* arbTBO; //!< GL_ARB_texture_buffer_object
- OpenGl_ArbIns* arbIns; //!< GL_ARB_draw_instanced
- OpenGl_ArbDbg* arbDbg; //!< GL_ARB_debug_output
- OpenGl_ExtFBO* extFBO; //!< GL_EXT_framebuffer_object
- OpenGl_ExtGS* extGS; //!< GL_EXT_geometry_shader4
- Standard_Boolean extBgra; //!< GL_EXT_bgra
- Standard_Boolean extAnis; //!< GL_EXT_texture_filter_anisotropic
- Standard_Boolean extPDS; //!< GL_EXT_packed_depth_stencil
- Standard_Boolean atiMem; //!< GL_ATI_meminfo
- Standard_Boolean nvxMem; //!< GL_NVX_gpu_memory_info
+public: //! @name extensions
+
+ Standard_Boolean hasHighp; //!< highp in GLSL ES fragment shader is supported
+ Standard_Boolean hasTexRGBA8; //!< always available on desktop; on OpenGL ES - since 3.0 or as extension GL_OES_rgb8_rgba8
+ Standard_Boolean arbNPTW; //!< GL_ARB_texture_non_power_of_two
+ Standard_Boolean arbTexRG; //!< GL_ARB_texture_rg
+ OpenGl_ArbTexBindless* arbTexBindless; //!< GL_ARB_bindless_texture
+ OpenGl_ArbTBO* arbTBO; //!< GL_ARB_texture_buffer_object
+ Standard_Boolean arbTboRGB32; //!< GL_ARB_texture_buffer_object_rgb32 (3-component TBO), in core since 4.0
+ OpenGl_ArbIns* arbIns; //!< GL_ARB_draw_instanced
+ OpenGl_ArbDbg* arbDbg; //!< GL_ARB_debug_output
+ OpenGl_ArbFBO* arbFBO; //!< GL_ARB_framebuffer_object
+ OpenGl_ArbFBOBlit* arbFBOBlit; //!< glBlitFramebuffer function, moved out from OpenGl_ArbFBO structure for compatibility with OpenGL ES 2.0
+ OpenGl_ExtGS* extGS; //!< GL_EXT_geometry_shader4
+ Standard_Boolean extBgra; //!< GL_EXT_bgra or GL_EXT_texture_format_BGRA8888 on OpenGL ES
+ Standard_Boolean extAnis; //!< GL_EXT_texture_filter_anisotropic
+ Standard_Boolean extPDS; //!< GL_EXT_packed_depth_stencil
+ Standard_Boolean atiMem; //!< GL_ATI_meminfo
+ Standard_Boolean nvxMem; //!< GL_NVX_gpu_memory_info
private: // system-dependent fields
-#if defined(_WIN32)
+#if defined(HAVE_EGL)
+ Aspect_Drawable myWindow; //!< EGL surface : EGLSurface
+ Aspect_Display myDisplay; //!< EGL connection to the Display : EGLDisplay
+ Aspect_RenderingContext myGContext; //!< EGL rendering context : EGLContext
+#elif defined(_WIN32)
Aspect_Handle myWindow; //!< window handle (owner of GL context) : HWND
Aspect_Handle myWindowDC; //!< Device Descriptor handle : HDC
Aspect_RenderingContext myGContext; //!< Rendering Context handle : HGLRC
#elif defined(__APPLE__) && !defined(MACOSX_USE_GLX)
- void* myGContext; //!< Rendering Context handle : NSOpenGLContext
+ #if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
+ EAGLContext* myGContext; //!< Rendering Context handle
+ #else
+ NSOpenGLContext* myGContext; //!< Rendering Context handle
+ #endif
#else
Aspect_Drawable myWindow; //!< window handle (owner of GL context) : GLXDrawable
Aspect_Display myDisplay; //!< connection to the X-server : Display*
typedef NCollection_Handle<OpenGl_DelayReleaseMap> Handle(OpenGl_DelayReleaseMap);
typedef NCollection_DataMap<TCollection_AsciiString, Handle(OpenGl_Resource)> OpenGl_ResourcesMap;
typedef NCollection_Handle<OpenGl_ResourcesMap> Handle(OpenGl_ResourcesMap);
- typedef NCollection_Queue<Handle(OpenGl_Resource)> OpenGl_ResourcesQueue;
- typedef NCollection_Handle<OpenGl_ResourcesQueue> Handle(OpenGl_ResourcesQueue);
+ typedef NCollection_List<Handle(OpenGl_Resource)> OpenGl_ResourcesStack;
+ typedef NCollection_Handle<OpenGl_ResourcesStack> Handle(OpenGl_ResourcesStack);
Handle(OpenGl_ResourcesMap) mySharedResources; //!< shared resources with unique identification key
Handle(OpenGl_DelayReleaseMap) myDelayed; //!< shared resources for delayed release
- Handle(OpenGl_ResourcesQueue) myReleaseQueue; //!< queue of resources for delayed clean up
+ Handle(OpenGl_ResourcesStack) myUnusedResources; //!< stack of resources for delayed clean up
OpenGl_Clipping myClippingState; //!< state of clip planes
- void* myGlLibHandle; //!< optional handle to GL library
- OpenGl_GlCore20* myGlCore20; //!< common structure for GL core functions upto 2.0
- Standard_Integer myAnisoMax; //!< maximum level of anisotropy texture filter
- Standard_Integer myMaxTexDim; //!< value for GL_MAX_TEXTURE_SIZE
- Standard_Integer myMaxClipPlanes; //!< value for GL_MAX_CLIP_PLANES
- Standard_Integer myGlVerMajor; //!< cached GL version major number
- Standard_Integer myGlVerMinor; //!< cached GL version minor number
- Standard_Boolean myIsFeedback; //!< flag indicates GL_FEEDBACK mode
- Standard_Boolean myIsInitialized; //!< flag indicates initialization state
+ void* myGlLibHandle; //!< optional handle to GL library
+ NCollection_Handle<OpenGl_GlFunctions>
+ myFuncs; //!< mega structure for all GL functions
+ Standard_Integer myAnisoMax; //!< maximum level of anisotropy texture filter
+ Standard_Integer myTexClamp; //!< either GL_CLAMP_TO_EDGE (1.2+) or GL_CLAMP (1.1)
+ Standard_Integer myMaxTexDim; //!< value for GL_MAX_TEXTURE_SIZE
+ Standard_Integer myMaxClipPlanes; //!< value for GL_MAX_CLIP_PLANES
+ Standard_Integer myGlVerMajor; //!< cached GL version major number
+ Standard_Integer myGlVerMinor; //!< cached GL version minor number
+ Standard_Boolean myIsInitialized; //!< flag indicates initialization state
+ Standard_Boolean myIsStereoBuffers; //!< context supports stereo buffering
+ Standard_Boolean myIsGlNormalizeEnabled; //!< GL_NORMALIZE flag
+ //!< Used to tell OpenGl that normals should be normalized
Handle(OpenGl_ShaderManager) myShaderManager; //! support object for managing shader programs
+private: //! @name fields tracking current state
+
+ Handle(OpenGl_ShaderProgram) myActiveProgram; //!< currently active GLSL program
+ Handle(OpenGl_Sampler) myTexSampler; //!< currently active sampler object
+ Handle(OpenGl_FrameBuffer) myDefaultFbo; //!< default Frame Buffer Object
+ Standard_Integer myRenderMode; //!< value for active rendering mode
+ Standard_Integer myReadBuffer; //!< current read buffer
+ Standard_Integer myDrawBuffer; //!< current draw buffer
+ unsigned int myDefaultVao; //!< default Vertex Array Object
+ Standard_Boolean myIsGlDebugCtx; //!< debug context initialization state
+ TCollection_AsciiString myVendor; //!< Graphics Driver's vendor
+ TColStd_PackedMapOfInteger myFilters[6]; //!< messages suppressing filter (for sources from GL_DEBUG_SOURCE_API_ARB to GL_DEBUG_SOURCE_OTHER_ARB)
+
+public:
+
+ OpenGl_Utils::MatrixState<Standard_ShortReal> ModelWorldState; //!< state of orientation matrix
+ OpenGl_Utils::MatrixState<Standard_ShortReal> WorldViewState; //!< state of orientation matrix
+ OpenGl_Utils::MatrixState<Standard_ShortReal> ProjectionState; //!< state of projection matrix
+
private:
//! Copying allowed only within Handles
projects / occt.git / blobdiff