typedef OpenGl_TmplCore44<OpenGl_GlCore43Back> OpenGl_GlCore44Back;
typedef OpenGl_TmplCore44<OpenGl_GlCore43> OpenGl_GlCore44;
+template<typename theBaseClass_t> struct OpenGl_TmplCore45;
+typedef OpenGl_TmplCore45<OpenGl_GlCore44Back> OpenGl_GlCore45Back;
+typedef OpenGl_TmplCore45<OpenGl_GlCore44> OpenGl_GlCore45;
+
class Graphic3d_PresentationAttributes;
-class OpenGl_AspectFace;
+class OpenGl_Aspects;
class OpenGl_FrameBuffer;
class OpenGl_Sampler;
class OpenGl_ShaderProgram;
class OpenGl_ShaderManager;
+class OpenGl_FrameStats;
enum OpenGl_FeatureFlag
{
friend class OpenGl_Window;
public:
+ typedef NCollection_Shared< NCollection_DataMap<TCollection_AsciiString, Handle(OpenGl_Resource)> > OpenGl_ResourcesMap;
+
//! Function for getting power of to number larger or equal to input number.
//! @param theNumber number to 'power of two'
//! @param theThreshold upper threshold
//! Pointer to function retrieved from library is statically casted
//! to requested type - there no way to check real signature of exported function.
//! The context should be bound before call.
+ //! @param theLastFailFuncName [out] set to theFuncName in case of failure, unmodified on success
+ //! @param theFuncName [in] function name to find
+ //! @param theFuncPtr [out] retrieved function pointer
+ //! @return TRUE on success
+ template <typename FuncType_t>
+ Standard_Boolean FindProcVerbose (const char*& theLastFailFuncName,
+ const char* theFuncName,
+ FuncType_t& theFuncPtr)
+ {
+ theFuncPtr = (FuncType_t )findProc (theFuncName);
+ if (theFuncPtr == NULL)
+ {
+ theLastFailFuncName = theFuncName;
+ return Standard_False;
+ }
+ return Standard_True;
+ }
+
+ //! Auxiliary template to retrieve GL function pointer.
+ //! Same as FindProcVerbose() but without auxiliary last function name argument.
template <typename FuncType_t>
Standard_Boolean FindProc (const char* theFuncName,
FuncType_t& theFuncPtr)
//! Clean up the delayed release queue.
Standard_EXPORT void ReleaseDelayed();
+ //! Return map of shared resources.
+ const OpenGl_ResourcesMap& SharedResources() const { return *mySharedResources; }
+
//! @return tool for management of clippings within this context.
inline OpenGl_Clipping& ChangeClipping() { return myClippingState; }
//! @return value for GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS
Standard_Integer MaxCombinedTextureUnits() const { return myMaxTexCombined; }
+ //! @return texture unit to be used for sprites
+ Graphic3d_TextureUnit SpriteTextureUnit() const { return mySpriteTexUnit; }
+
//! @return value for GL_MAX_SAMPLES
Standard_Integer MaxMsaaSamples() const { return myMaxMsaaSamples; }
+ //! @return maximum FBO width for image dump
+ Standard_Integer MaxDumpSizeX() const { return myMaxDumpSizeX; }
+
+ //! @return maximum FBO height for image dump
+ Standard_Integer MaxDumpSizeY() const { return myMaxDumpSizeY; }
+
//! @return value for GL_MAX_DRAW_BUFFERS
Standard_Integer MaxDrawBuffers() const { return myMaxDrawBuffers; }
//! @return TRUE if adaptive screen sampling in ray tracing mode is supported
Standard_Boolean HasRayTracingAdaptiveSampling() const { return myHasRayTracingAdaptiveSampling; }
+ //! @return TRUE if atomic adaptive screen sampling in ray tracing mode is supported
+ Standard_Boolean HasRayTracingAdaptiveSamplingAtomic() const { return myHasRayTracingAdaptiveSamplingAtomic; }
+
//! Returns true if VBO is supported and permitted.
inline bool ToUseVbo() const
{
//! @return old type of hatch.
Standard_EXPORT Standard_Integer SetPolygonHatchStyle (const Handle(Graphic3d_HatchStyle)& theStyle);
+ //! Sets and applies current polygon offset.
+ Standard_EXPORT void SetPolygonOffset (const Graphic3d_PolygonOffset& theOffset);
+
+ //! Returns currently applied polygon offset parameters.
+ const Graphic3d_PolygonOffset& PolygonOffset() const { return myPolygonOffset; }
+
//! Applies matrix stored in ModelWorldState to OpenGl.
Standard_EXPORT void ApplyModelWorldMatrix();
public: //! @name methods to alter or retrieve current state
+ //! Return structure holding frame statistics.
+ const Handle(OpenGl_FrameStats)& FrameStats() const { return myFrameStats; }
+
+ //! Set structure holding frame statistics.
+ //! This call makes sense only if application defines OpenGl_FrameStats sub-class.
+ void SetFrameStats (const Handle(OpenGl_FrameStats)& theStats) { myFrameStats = theStats; }
+
//! Return cached viewport definition (x, y, width, height).
const Standard_Integer* Viewport() const { return myViewport; }
Standard_EXPORT void SetReadBuffer (const Standard_Integer theReadBuffer);
//! Return active draw buffer attached to a render target referred by index (layout location).
- Standard_Integer DrawBuffer (const Standard_Integer theIndex = 0)
+ Standard_Integer DrawBuffer (Standard_Integer theIndex = 0) const
{
- return myDrawBuffers.IsBound (theIndex) ? myDrawBuffers.Value (theIndex) : GL_NONE;
+ return theIndex >= myDrawBuffers.Lower()
+ && theIndex <= myDrawBuffers.Upper()
+ ? myDrawBuffers.Value (theIndex)
+ : GL_NONE;
}
//! Switch draw buffer, wrapper for ::glDrawBuffer().
SetDrawBuffer (theBuffer);
}
+ //! Return cached flag indicating writing into color buffer is enabled or disabled (glColorMask).
+ bool ColorMask() const { return myColorMask; }
+
+ //! Enable/disable writing into color buffer (wrapper for glColorMask).
+ Standard_EXPORT bool SetColorMask (bool theToWriteColor);
+
+ //! Return TRUE if GL_SAMPLE_ALPHA_TO_COVERAGE usage is allowed.
+ bool AllowSampleAlphaToCoverage() const { return myAllowAlphaToCov; }
+
+ //! Allow GL_SAMPLE_ALPHA_TO_COVERAGE usage.
+ void SetAllowSampleAlphaToCoverage (bool theToEnable) { myAllowAlphaToCov = theToEnable; }
+
+ //! Return GL_SAMPLE_ALPHA_TO_COVERAGE state.
+ bool SampleAlphaToCoverage() const { return myAlphaToCoverage; }
+
+ //! Enable/disable GL_SAMPLE_ALPHA_TO_COVERAGE.
+ Standard_EXPORT bool SetSampleAlphaToCoverage (bool theToEnable);
+
//! Return back face culling state.
bool ToCullBackFaces() const { return myToCullBackFaces; }
Standard_EXPORT Standard_Boolean BindProgram (const Handle(OpenGl_ShaderProgram)& theProgram);
//! Setup current shading material.
- Standard_EXPORT void SetShadingMaterial (const OpenGl_AspectFace* theAspect,
+ Standard_EXPORT void SetShadingMaterial (const OpenGl_Aspects* theAspect,
const Handle(Graphic3d_PresentationAttributes)& theHighlight);
//! Checks if transparency is required for the given aspect and highlight style.
- Standard_EXPORT static Standard_Boolean CheckIsTransparent (const OpenGl_AspectFace* theAspect,
+ Standard_EXPORT static Standard_Boolean CheckIsTransparent (const OpenGl_Aspects* theAspect,
const Handle(Graphic3d_PresentationAttributes)& theHighlight,
Standard_ShortReal& theAlphaFront,
Standard_ShortReal& theAlphaBack);
//! Checks if transparency is required for the given aspect and highlight style.
- static Standard_Boolean CheckIsTransparent (const OpenGl_AspectFace* theAspect,
+ static Standard_Boolean CheckIsTransparent (const OpenGl_Aspects* theAspect,
const Handle(Graphic3d_PresentationAttributes)& theHighlight)
{
Standard_ShortReal anAlphaFront = 1.0f, anAlphaBack = 1.0f;
//! Rendering scale factor (inverted value).
Standard_ShortReal RenderScaleInv() const { return myRenderScaleInv; }
+ //! Return scale factor for line width.
+ Standard_ShortReal LineWidthScale() const { return myLineWidthScale; }
+
//! Set resolution ratio.
//! Note that this method rounds @theRatio to nearest integer.
void SetResolution (unsigned int theResolution,
myLineWidthScale = Max (1.0f, std::floor (theRatio + 0.5f));
}
+ //! Return line feater width in pixels.
+ Standard_ShortReal LineFeather() const { return myLineFeather; }
+
+ //! Set line feater width.
+ void SetLineFeather(Standard_ShortReal theValue) { myLineFeather = theValue; }
+
+ //! Return Graphics Driver's vendor.
+ const TCollection_AsciiString& Vendor() const { return myVendor; }
+
private:
//! Wrapper to system function to retrieve GL function pointer by name.
//! 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);
+ //! @param theLastFailedProc function name which cannot be found
+ Standard_EXPORT void checkWrongVersion (Standard_Integer theGlVerMajor, Standard_Integer theGlVerMinor,
+ const char* theLastFailedProc);
//! Private initialization function that should be called only once.
Standard_EXPORT void init (const Standard_Boolean theIsCoreProfile);
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
+ OpenGl_GlCore45* core45; //!< OpenGL 4.5 core profile
+ OpenGl_GlCore45Back* core45back; //!< OpenGL 4.5 backward compatibility profile
Handle(OpenGl_Caps) caps; //!< context options
Standard_Boolean hasHighp; //!< highp in GLSL ES fragment shader is supported
Standard_Boolean hasUintIndex; //!< GLuint for index buffer is supported (always available on desktop; on OpenGL ES - since 3.0 or as extension GL_OES_element_index_uint)
Standard_Boolean hasTexRGBA8; //!< always available on desktop; on OpenGL ES - since 3.0 or as extension GL_OES_rgb8_rgba8
+ OpenGl_FeatureFlag hasFlatShading; //!< Complex flag indicating support of Flat shading (Graphic3d_TOSM_FACET) (always available on desktop; on OpenGL ES - since 3.0 or as extension GL_OES_standard_derivatives)
OpenGl_FeatureFlag hasDrawBuffers; //!< Complex flag indicating support of multiple draw buffers (desktop OpenGL 2.0, OpenGL ES 3.0, GL_ARB_draw_buffers, GL_EXT_draw_buffers)
OpenGl_FeatureFlag hasFloatBuffer; //!< Complex flag indicating support of float color buffer format (desktop OpenGL 3.0, GL_ARB_color_buffer_float, GL_EXT_color_buffer_float)
OpenGl_FeatureFlag hasHalfFloatBuffer; //!< Complex flag indicating support of half-float color buffer format (desktop OpenGL 3.0, GL_ARB_color_buffer_float, GL_EXT_color_buffer_half_float)
OpenGl_FeatureFlag hasSampleVariables; //!< Complex flag indicating support of MSAA variables in GLSL shader (desktop OpenGL 4.0, GL_ARB_sample_shading)
+ OpenGl_FeatureFlag hasGeometryStage; //!< Complex flag indicating support of Geometry shader (desktop OpenGL 3.2, OpenGL ES 3.2, GL_EXT_geometry_shader)
Standard_Boolean arbDrawBuffers; //!< GL_ARB_draw_buffers
Standard_Boolean arbNPTW; //!< GL_ARB_texture_non_power_of_two
Standard_Boolean arbTexRG; //!< GL_ARB_texture_rg
Standard_Boolean atiMem; //!< GL_ATI_meminfo
Standard_Boolean nvxMem; //!< GL_NVX_gpu_memory_info
Standard_Boolean oesSampleVariables; //!< GL_OES_sample_variables
+ Standard_Boolean oesStdDerivatives; //!< GL_OES_standard_derivatives
public: //! @name public properties tracking current state
private: // context info
typedef NCollection_Shared< NCollection_DataMap<TCollection_AsciiString, Standard_Integer> > OpenGl_DelayReleaseMap;
- typedef NCollection_Shared< NCollection_DataMap<TCollection_AsciiString, Handle(OpenGl_Resource)> > OpenGl_ResourcesMap;
typedef NCollection_Shared< NCollection_List<Handle(OpenGl_Resource)> > OpenGl_ResourcesStack;
- typedef NCollection_SparseArray<Standard_Integer> OpenGl_DrawBuffers;
Handle(OpenGl_ResourcesMap) mySharedResources; //!< shared resources with unique identification key
Handle(OpenGl_DelayReleaseMap) myDelayed; //!< shared resources for delayed release
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 myMaxTexCombined; //!< value for GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS
+ Standard_Integer myMaxDumpSizeX; //!< maximum FBO width for image dump
+ Standard_Integer myMaxDumpSizeY; //!< maximum FBO height for image dump
Standard_Integer myMaxClipPlanes; //!< value for GL_MAX_CLIP_PLANES
Standard_Integer myMaxMsaaSamples; //!< value for GL_MAX_SAMPLES
Standard_Integer myMaxDrawBuffers; //!< value for GL_MAX_DRAW_BUFFERS
Standard_Boolean myIsStereoBuffers; //!< context supports stereo buffering
Standard_Boolean myIsGlNormalizeEnabled; //!< GL_NORMALIZE flag
//!< Used to tell OpenGl that normals should be normalized
+ Graphic3d_TextureUnit mySpriteTexUnit; //!< texture unit for point sprite texture
- Standard_Boolean myHasRayTracing; //! indicates whether ray tracing mode is supported
- Standard_Boolean myHasRayTracingTextures; //! indicates whether textures in ray tracing mode are supported
- Standard_Boolean myHasRayTracingAdaptiveSampling; //! indicates whether adaptive screen sampling in ray tracing mode is supported
+ Standard_Boolean myHasRayTracing; //! indicates whether ray tracing mode is supported
+ Standard_Boolean myHasRayTracingTextures; //! indicates whether textures in ray tracing mode are supported
+ Standard_Boolean myHasRayTracingAdaptiveSampling; //! indicates whether adaptive screen sampling in ray tracing mode is supported
+ Standard_Boolean myHasRayTracingAdaptiveSamplingAtomic; //! indicates whether atomic adaptive screen sampling in ray tracing mode is supported
Handle(OpenGl_ShaderManager) myShaderManager; //! support object for managing shader programs
private: //! @name fields tracking current state
+ Handle(OpenGl_FrameStats) myFrameStats; //!< structure accumulating frame statistics
Handle(OpenGl_ShaderProgram) myActiveProgram; //!< currently active GLSL program
Handle(OpenGl_TextureSet) myActiveTextures; //!< currently bound textures
//!< currently active sampler objects
Standard_Integer myPointSpriteOrig; //!< GL_POINT_SPRITE_COORD_ORIGIN state (GL_UPPER_LEFT by default)
Standard_Integer myRenderMode; //!< value for active rendering mode
Standard_Integer myPolygonMode; //!< currently used polygon rasterization mode (glPolygonMode)
+ Graphic3d_PolygonOffset myPolygonOffset; //!< currently applied polygon offset
bool myToCullBackFaces; //!< back face culling mode enabled state (glIsEnabled (GL_CULL_FACE))
Standard_Integer myReadBuffer; //!< current read buffer
- OpenGl_DrawBuffers myDrawBuffers; //!< current draw buffers
+ NCollection_Array1<Standard_Integer>
+ myDrawBuffers; //!< current draw buffers
unsigned int myDefaultVao; //!< default Vertex Array Object
+ Standard_Boolean myColorMask; //!< flag indicating writing into color buffer is enabled or disabled (glColorMask)
+ Standard_Boolean myAllowAlphaToCov; //!< flag allowing GL_SAMPLE_ALPHA_TO_COVERAGE usage
+ Standard_Boolean myAlphaToCoverage; //!< flag indicating GL_SAMPLE_ALPHA_TO_COVERAGE state
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)
Standard_ShortReal myResolutionRatio; //!< scaling factor for parameters like text size
//! to be properly displayed on device (screen / printer)
Standard_ShortReal myLineWidthScale; //!< scaling factor for line width
+ Standard_ShortReal myLineFeather; //!< line feater width in pixels
Standard_ShortReal myRenderScale; //!< scaling factor for rendering resolution
Standard_ShortReal myRenderScaleInv; //!< scaling factor for rendering resolution (inverted value)
OpenGl_Material myMatFront; //!< current front material state (cached to reduce GL context updates)
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