| /* |
| * Copyright 2012 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| |
| #include "GrGLCaps.h" |
| |
| #include "GrGLContext.h" |
| #include "SkTSearch.h" |
| #include "SkTSort.h" |
| |
| GrGLCaps::GrGLCaps(const GrContextOptions& contextOptions, |
| const GrGLContextInfo& ctxInfo, |
| const GrGLInterface* glInterface) : INHERITED(contextOptions) { |
| fVerifiedColorConfigs.reset(); |
| fStencilFormats.reset(); |
| fStencilVerifiedColorConfigs.reset(); |
| fMSFBOType = kNone_MSFBOType; |
| fInvalidateFBType = kNone_InvalidateFBType; |
| fLATCAlias = kLATC_LATCAlias; |
| fMapBufferType = kNone_MapBufferType; |
| fMaxFragmentUniformVectors = 0; |
| fMaxVertexAttributes = 0; |
| fMaxFragmentTextureUnits = 0; |
| fRGBA8RenderbufferSupport = false; |
| fBGRAIsInternalFormat = false; |
| fTextureSwizzleSupport = false; |
| fUnpackRowLengthSupport = false; |
| fUnpackFlipYSupport = false; |
| fPackRowLengthSupport = false; |
| fPackFlipYSupport = false; |
| fTextureUsageSupport = false; |
| fTexStorageSupport = false; |
| fTextureRedSupport = false; |
| fImagingSupport = false; |
| fTwoFormatLimit = false; |
| fFragCoordsConventionSupport = false; |
| fVertexArrayObjectSupport = false; |
| fES2CompatibilitySupport = false; |
| fMultisampleDisableSupport = false; |
| fUseNonVBOVertexAndIndexDynamicData = false; |
| fIsCoreProfile = false; |
| fFullClearIsFree = false; |
| |
| fReadPixelsSupportedCache.reset(); |
| |
| this->init(ctxInfo, glInterface); |
| |
| fShaderCaps.reset(SkNEW_ARGS(GrGLSLCaps, (ctxInfo, glInterface, *this))); |
| } |
| |
| void GrGLCaps::init(const GrGLContextInfo& ctxInfo, const GrGLInterface* gli) { |
| GrGLStandard standard = ctxInfo.standard(); |
| GrGLVersion version = ctxInfo.version(); |
| |
| /************************************************************************** |
| * Caps specific to GrGLCaps |
| **************************************************************************/ |
| |
| if (kGLES_GrGLStandard == standard) { |
| GR_GL_GetIntegerv(gli, GR_GL_MAX_FRAGMENT_UNIFORM_VECTORS, |
| &fMaxFragmentUniformVectors); |
| } else { |
| SkASSERT(kGL_GrGLStandard == standard); |
| GrGLint max; |
| GR_GL_GetIntegerv(gli, GR_GL_MAX_FRAGMENT_UNIFORM_COMPONENTS, &max); |
| fMaxFragmentUniformVectors = max / 4; |
| if (version >= GR_GL_VER(3, 2)) { |
| GrGLint profileMask; |
| GR_GL_GetIntegerv(gli, GR_GL_CONTEXT_PROFILE_MASK, &profileMask); |
| fIsCoreProfile = SkToBool(profileMask & GR_GL_CONTEXT_CORE_PROFILE_BIT); |
| } |
| } |
| GR_GL_GetIntegerv(gli, GR_GL_MAX_VERTEX_ATTRIBS, &fMaxVertexAttributes); |
| GR_GL_GetIntegerv(gli, GR_GL_MAX_TEXTURE_IMAGE_UNITS, &fMaxFragmentTextureUnits); |
| |
| if (kGL_GrGLStandard == standard) { |
| fRGBA8RenderbufferSupport = true; |
| } else { |
| fRGBA8RenderbufferSupport = version >= GR_GL_VER(3,0) || |
| ctxInfo.hasExtension("GL_OES_rgb8_rgba8") || |
| ctxInfo.hasExtension("GL_ARM_rgba8"); |
| } |
| |
| if (kGL_GrGLStandard == standard) { |
| fTextureSwizzleSupport = version >= GR_GL_VER(3,3) || |
| ctxInfo.hasExtension("GL_ARB_texture_swizzle"); |
| } else { |
| fTextureSwizzleSupport = version >= GR_GL_VER(3,0); |
| } |
| |
| if (kGL_GrGLStandard == standard) { |
| fUnpackRowLengthSupport = true; |
| fUnpackFlipYSupport = false; |
| fPackRowLengthSupport = true; |
| fPackFlipYSupport = false; |
| } else { |
| fUnpackRowLengthSupport = version >= GR_GL_VER(3,0) || |
| ctxInfo.hasExtension("GL_EXT_unpack_subimage"); |
| fUnpackFlipYSupport = ctxInfo.hasExtension("GL_CHROMIUM_flipy"); |
| fPackRowLengthSupport = version >= GR_GL_VER(3,0) || |
| ctxInfo.hasExtension("GL_NV_pack_subimage"); |
| fPackFlipYSupport = |
| ctxInfo.hasExtension("GL_ANGLE_pack_reverse_row_order"); |
| } |
| |
| fTextureUsageSupport = (kGLES_GrGLStandard == standard) && |
| ctxInfo.hasExtension("GL_ANGLE_texture_usage"); |
| |
| if (kGL_GrGLStandard == standard) { |
| // The EXT version can apply to either GL or GLES. |
| fTexStorageSupport = version >= GR_GL_VER(4,2) || |
| ctxInfo.hasExtension("GL_ARB_texture_storage") || |
| ctxInfo.hasExtension("GL_EXT_texture_storage"); |
| } else { |
| // Qualcomm Adreno drivers appear to have issues with texture storage. |
| fTexStorageSupport = (version >= GR_GL_VER(3,0) && |
| kQualcomm_GrGLVendor != ctxInfo.vendor()) || |
| ctxInfo.hasExtension("GL_EXT_texture_storage"); |
| } |
| |
| if (kGL_GrGLStandard == standard) { |
| fTextureBarrierSupport = version >= GR_GL_VER(4,5) || |
| ctxInfo.hasExtension("GL_ARB_texture_barrier") || |
| ctxInfo.hasExtension("GL_NV_texture_barrier"); |
| } else { |
| fTextureBarrierSupport = ctxInfo.hasExtension("GL_NV_texture_barrier"); |
| } |
| |
| // ARB_texture_rg is part of OpenGL 3.0, but mesa doesn't support GL_RED |
| // and GL_RG on FBO textures. |
| if (!ctxInfo.isMesa()) { |
| if (kGL_GrGLStandard == standard) { |
| fTextureRedSupport = version >= GR_GL_VER(3,0) || |
| ctxInfo.hasExtension("GL_ARB_texture_rg"); |
| } else { |
| fTextureRedSupport = version >= GR_GL_VER(3,0) || |
| ctxInfo.hasExtension("GL_EXT_texture_rg"); |
| } |
| } |
| fImagingSupport = kGL_GrGLStandard == standard && |
| ctxInfo.hasExtension("GL_ARB_imaging"); |
| |
| // ES 2 only guarantees RGBA/uchar + one other format/type combo for |
| // ReadPixels. The other format has to checked at run-time since it |
| // can change based on which render target is bound |
| fTwoFormatLimit = kGLES_GrGLStandard == standard; |
| |
| // Frag Coords Convention support is not part of ES |
| // Known issue on at least some Intel platforms: |
| // http://code.google.com/p/skia/issues/detail?id=946 |
| if (kIntel_GrGLVendor != ctxInfo.vendor() && kGLES_GrGLStandard != standard) { |
| fFragCoordsConventionSupport = ctxInfo.glslGeneration() >= k150_GrGLSLGeneration || |
| ctxInfo.hasExtension("GL_ARB_fragment_coord_conventions"); |
| } |
| |
| // SGX and Mali GPUs that are based on a tiled-deferred architecture that have trouble with |
| // frequently changing VBOs. We've measured a performance increase using non-VBO vertex |
| // data for dynamic content on these GPUs. Perhaps we should read the renderer string and |
| // limit this decision to specific GPU families rather than basing it on the vendor alone. |
| if (!GR_GL_MUST_USE_VBO && |
| (kARM_GrGLVendor == ctxInfo.vendor() || |
| kImagination_GrGLVendor == ctxInfo.vendor() || |
| kQualcomm_GrGLVendor == ctxInfo.vendor())) { |
| fUseNonVBOVertexAndIndexDynamicData = true; |
| } |
| |
| // A driver but on the nexus 6 causes incorrect dst copies when invalidate is called beforehand. |
| // Thus we are blacklisting this extension for now on Adreno4xx devices. |
| if (kAdreno4xx_GrGLRenderer != ctxInfo.renderer() && |
| ((kGL_GrGLStandard == standard && version >= GR_GL_VER(4,3)) || |
| (kGLES_GrGLStandard == standard && version >= GR_GL_VER(3,0)) || |
| ctxInfo.hasExtension("GL_ARB_invalidate_subdata"))) { |
| fDiscardRenderTargetSupport = true; |
| fInvalidateFBType = kInvalidate_InvalidateFBType; |
| } else if (ctxInfo.hasExtension("GL_EXT_discard_framebuffer")) { |
| fDiscardRenderTargetSupport = true; |
| fInvalidateFBType = kDiscard_InvalidateFBType; |
| } |
| |
| if (kARM_GrGLVendor == ctxInfo.vendor() || kImagination_GrGLVendor == ctxInfo.vendor()) { |
| fFullClearIsFree = true; |
| } |
| |
| if (kGL_GrGLStandard == standard) { |
| fVertexArrayObjectSupport = version >= GR_GL_VER(3, 0) || |
| ctxInfo.hasExtension("GL_ARB_vertex_array_object") || |
| ctxInfo.hasExtension("GL_APPLE_vertex_array_object"); |
| } else { |
| fVertexArrayObjectSupport = version >= GR_GL_VER(3, 0) || |
| ctxInfo.hasExtension("GL_OES_vertex_array_object"); |
| } |
| |
| if (kGL_GrGLStandard == standard) { |
| fES2CompatibilitySupport = ctxInfo.hasExtension("GL_ARB_ES2_compatibility"); |
| } |
| else { |
| fES2CompatibilitySupport = true; |
| } |
| |
| if (kGL_GrGLStandard == standard) { |
| fMultisampleDisableSupport = true; |
| } else { |
| fMultisampleDisableSupport = false; |
| } |
| |
| this->initFSAASupport(ctxInfo, gli); |
| this->initStencilFormats(ctxInfo); |
| |
| /************************************************************************** |
| * GrCaps fields |
| **************************************************************************/ |
| if (kGL_GrGLStandard == standard) { |
| // we could also look for GL_ATI_separate_stencil extension or |
| // GL_EXT_stencil_two_side but they use different function signatures |
| // than GL2.0+ (and than each other). |
| fTwoSidedStencilSupport = (ctxInfo.version() >= GR_GL_VER(2,0)); |
| // supported on GL 1.4 and higher or by extension |
| fStencilWrapOpsSupport = (ctxInfo.version() >= GR_GL_VER(1,4)) || |
| ctxInfo.hasExtension("GL_EXT_stencil_wrap"); |
| } else { |
| // ES 2 has two sided stencil and stencil wrap |
| fTwoSidedStencilSupport = true; |
| fStencilWrapOpsSupport = true; |
| } |
| |
| // Disabling advanced blend until we can resolve various bugs |
| #if 0 |
| if (kIntel_GrGLVendor != ctxInfo.vendor()) { |
| if (ctxInfo.hasExtension("GL_KHR_blend_equation_advanced_coherent") || |
| ctxInfo.hasExtension("GL_NV_blend_equation_advanced_coherent")) { |
| fBlendEquationSupport = kAdvancedCoherent_BlendEquationSupport; |
| } else if (ctxInfo.hasExtension("GL_KHR_blend_equation_advanced") || |
| ctxInfo.hasExtension("GL_NV_blend_equation_advanced")) { |
| fBlendEquationSupport = kAdvanced_BlendEquationSupport; |
| } else { |
| fBlendEquationSupport = kBasic_BlendEquationSupport; |
| } |
| } else { |
| // On Intel platforms, KHR_blend_equation_advanced is not conformant. |
| fBlendEquationSupport = kBasic_BlendEquationSupport; |
| } |
| #endif |
| if (kGL_GrGLStandard == standard) { |
| fMapBufferFlags = kCanMap_MapFlag; // we require VBO support and the desktop VBO |
| // extension includes glMapBuffer. |
| if (version >= GR_GL_VER(3, 0) || ctxInfo.hasExtension("GL_ARB_map_buffer_range")) { |
| fMapBufferFlags |= kSubset_MapFlag; |
| fMapBufferType = kMapBufferRange_MapBufferType; |
| } else { |
| fMapBufferType = kMapBuffer_MapBufferType; |
| } |
| } else { |
| // Unextended GLES2 doesn't have any buffer mapping. |
| fMapBufferFlags = kNone_MapBufferType; |
| if (ctxInfo.hasExtension("GL_CHROMIUM_map_sub")) { |
| fMapBufferFlags = kCanMap_MapFlag | kSubset_MapFlag; |
| fMapBufferType = kChromium_MapBufferType; |
| } else if (version >= GR_GL_VER(3, 0) || ctxInfo.hasExtension("GL_EXT_map_buffer_range")) { |
| fMapBufferFlags = kCanMap_MapFlag | kSubset_MapFlag; |
| fMapBufferType = kMapBufferRange_MapBufferType; |
| } else if (ctxInfo.hasExtension("GL_OES_mapbuffer")) { |
| fMapBufferFlags = kCanMap_MapFlag; |
| fMapBufferType = kMapBuffer_MapBufferType; |
| } |
| } |
| |
| if (kGL_GrGLStandard == standard) { |
| SkASSERT(ctxInfo.version() >= GR_GL_VER(2,0) || |
| ctxInfo.hasExtension("GL_ARB_texture_non_power_of_two")); |
| fNPOTTextureTileSupport = true; |
| fMipMapSupport = true; |
| } else { |
| // Unextended ES2 supports NPOT textures with clamp_to_edge and non-mip filters only |
| // ES3 has no limitations. |
| fNPOTTextureTileSupport = ctxInfo.version() >= GR_GL_VER(3,0) || |
| ctxInfo.hasExtension("GL_OES_texture_npot"); |
| // ES2 supports MIP mapping for POT textures but our caps don't allow for limited MIP |
| // support. The OES extension or ES 3.0 allow for MIPS on NPOT textures. So, apparently, |
| // does the undocumented GL_IMG_texture_npot extension. This extension does not seem to |
| // to alllow arbitrary wrap modes, however. |
| fMipMapSupport = fNPOTTextureTileSupport || ctxInfo.hasExtension("GL_IMG_texture_npot"); |
| } |
| |
| GR_GL_GetIntegerv(gli, GR_GL_MAX_TEXTURE_SIZE, &fMaxTextureSize); |
| GR_GL_GetIntegerv(gli, GR_GL_MAX_RENDERBUFFER_SIZE, &fMaxRenderTargetSize); |
| // Our render targets are always created with textures as the color |
| // attachment, hence this min: |
| fMaxRenderTargetSize = SkTMin(fMaxTextureSize, fMaxRenderTargetSize); |
| |
| fGpuTracingSupport = ctxInfo.hasExtension("GL_EXT_debug_marker"); |
| |
| // Disable scratch texture reuse on Mali and Adreno devices |
| fReuseScratchTextures = kARM_GrGLVendor != ctxInfo.vendor() && |
| kQualcomm_GrGLVendor != ctxInfo.vendor(); |
| |
| if (GrGLCaps::kES_IMG_MsToTexture_MSFBOType == fMSFBOType) { |
| GR_GL_GetIntegerv(gli, GR_GL_MAX_SAMPLES_IMG, &fMaxSampleCount); |
| } else if (GrGLCaps::kNone_MSFBOType != fMSFBOType) { |
| GR_GL_GetIntegerv(gli, GR_GL_MAX_SAMPLES, &fMaxSampleCount); |
| } |
| |
| if (kPowerVR54x_GrGLRenderer == ctxInfo.renderer() || |
| kPowerVRRogue_GrGLRenderer == ctxInfo.renderer() || |
| kAdreno3xx_GrGLRenderer == ctxInfo.renderer()) { |
| fUseDrawInsteadOfClear = true; |
| } |
| |
| if (kGL_GrGLStandard == standard) { |
| // ARB allows mixed size FBO attachments, EXT does not. |
| if (ctxInfo.version() >= GR_GL_VER(3, 0) || |
| ctxInfo.hasExtension("GL_ARB_framebuffer_object")) { |
| fOversizedStencilSupport = true; |
| } else { |
| SkASSERT(ctxInfo.hasExtension("GL_EXT_framebuffer_object")); |
| } |
| } else { |
| // ES 3.0 supports mixed size FBO attachments, 2.0 does not. |
| fOversizedStencilSupport = ctxInfo.version() >= GR_GL_VER(3, 0); |
| } |
| |
| this->initConfigTexturableTable(ctxInfo, gli); |
| this->initConfigRenderableTable(ctxInfo); |
| } |
| |
| void GrGLCaps::initConfigRenderableTable(const GrGLContextInfo& ctxInfo) { |
| // OpenGL < 3.0 |
| // no support for render targets unless the GL_ARB_framebuffer_object |
| // extension is supported (in which case we get ALPHA, RED, RG, RGB, |
| // RGBA (ALPHA8, RGBA4, RGBA8) for OpenGL > 1.1). Note that we |
| // probably don't get R8 in this case. |
| |
| // OpenGL 3.0 |
| // base color renderable: ALPHA, RED, RG, RGB, and RGBA |
| // sized derivatives: ALPHA8, R8, RGBA4, RGBA8 |
| |
| // >= OpenGL 3.1 |
| // base color renderable: RED, RG, RGB, and RGBA |
| // sized derivatives: R8, RGBA4, RGBA8 |
| // if the GL_ARB_compatibility extension is supported then we get back |
| // support for GL_ALPHA and ALPHA8 |
| |
| // GL_EXT_bgra adds BGRA render targets to any version |
| |
| // ES 2.0 |
| // color renderable: RGBA4, RGB5_A1, RGB565 |
| // GL_EXT_texture_rg adds support for R8 as a color render target |
| // GL_OES_rgb8_rgba8 and/or GL_ARM_rgba8 adds support for RGBA8 |
| // GL_EXT_texture_format_BGRA8888 and/or GL_APPLE_texture_format_BGRA8888 added BGRA support |
| |
| // ES 3.0 |
| // Same as ES 2.0 except R8 and RGBA8 are supported without extensions (the functions called |
| // below already account for this). |
| |
| GrGLStandard standard = ctxInfo.standard(); |
| |
| enum { |
| kNo_MSAA = 0, |
| kYes_MSAA = 1, |
| }; |
| |
| if (kGL_GrGLStandard == standard) { |
| // Post 3.0 we will get R8 |
| // Prior to 3.0 we will get ALPHA8 (with GL_ARB_framebuffer_object) |
| if (ctxInfo.version() >= GR_GL_VER(3,0) || |
| ctxInfo.hasExtension("GL_ARB_framebuffer_object")) { |
| fConfigRenderSupport[kAlpha_8_GrPixelConfig][kNo_MSAA] = true; |
| fConfigRenderSupport[kAlpha_8_GrPixelConfig][kYes_MSAA] = true; |
| } |
| } else { |
| // On ES we can only hope for R8 |
| fConfigRenderSupport[kAlpha_8_GrPixelConfig][kNo_MSAA] = fTextureRedSupport; |
| fConfigRenderSupport[kAlpha_8_GrPixelConfig][kYes_MSAA] = fTextureRedSupport; |
| } |
| |
| if (kGL_GrGLStandard != standard) { |
| // only available in ES |
| fConfigRenderSupport[kRGB_565_GrPixelConfig][kNo_MSAA] = true; |
| fConfigRenderSupport[kRGB_565_GrPixelConfig][kYes_MSAA] = true; |
| } |
| |
| // we no longer support 444 as a render target |
| fConfigRenderSupport[kRGBA_4444_GrPixelConfig][kNo_MSAA] = false; |
| fConfigRenderSupport[kRGBA_4444_GrPixelConfig][kYes_MSAA] = false; |
| |
| if (this->fRGBA8RenderbufferSupport) { |
| fConfigRenderSupport[kRGBA_8888_GrPixelConfig][kNo_MSAA] = true; |
| fConfigRenderSupport[kRGBA_8888_GrPixelConfig][kYes_MSAA] = true; |
| } |
| |
| if (this->isConfigTexturable(kBGRA_8888_GrPixelConfig)) { |
| fConfigRenderSupport[kBGRA_8888_GrPixelConfig][kNo_MSAA] = true; |
| // The GL_EXT_texture_format_BGRA8888 extension does not add BGRA to the list of |
| // configs that are color-renderable and can be passed to glRenderBufferStorageMultisample. |
| // Chromium may have an extension to allow BGRA renderbuffers to work on desktop platforms. |
| if (ctxInfo.hasExtension("GL_CHROMIUM_renderbuffer_format_BGRA8888")) { |
| fConfigRenderSupport[kBGRA_8888_GrPixelConfig][kYes_MSAA] = true; |
| } else { |
| fConfigRenderSupport[kBGRA_8888_GrPixelConfig][kYes_MSAA] = |
| !fBGRAIsInternalFormat || !this->usesMSAARenderBuffers(); |
| } |
| } |
| |
| if (this->fRGBA8RenderbufferSupport && this->isConfigTexturable(kSRGBA_8888_GrPixelConfig)) { |
| if (kGL_GrGLStandard == standard) { |
| if (ctxInfo.version() >= GR_GL_VER(3,0) || |
| ctxInfo.hasExtension("GL_ARB_framebuffer_sRGB") || |
| ctxInfo.hasExtension("GL_EXT_framebuffer_sRGB")) { |
| fConfigRenderSupport[kSRGBA_8888_GrPixelConfig][kNo_MSAA] = true; |
| fConfigRenderSupport[kSRGBA_8888_GrPixelConfig][kYes_MSAA] = true; |
| } |
| } else { |
| if (ctxInfo.version() >= GR_GL_VER(3,0) || |
| ctxInfo.hasExtension("GL_EXT_sRGB")) { |
| fConfigRenderSupport[kSRGBA_8888_GrPixelConfig][kNo_MSAA] = true; |
| fConfigRenderSupport[kSRGBA_8888_GrPixelConfig][kYes_MSAA] = true; |
| } |
| } |
| } |
| |
| if (this->isConfigTexturable(kRGBA_float_GrPixelConfig)) { |
| if (kGL_GrGLStandard == standard) { |
| fConfigRenderSupport[kRGBA_float_GrPixelConfig][kNo_MSAA] = true; |
| fConfigRenderSupport[kRGBA_float_GrPixelConfig][kYes_MSAA] = true; |
| } else { |
| if (ctxInfo.hasExtension("GL_EXT_color_buffer_float")) { |
| fConfigRenderSupport[kRGBA_float_GrPixelConfig][kNo_MSAA] = true; |
| } else { |
| fConfigRenderSupport[kRGBA_float_GrPixelConfig][kNo_MSAA] = false; |
| } |
| // for now we don't support floating point MSAA on ES |
| fConfigRenderSupport[kRGBA_float_GrPixelConfig][kYes_MSAA] = false; |
| } |
| } |
| |
| if (this->isConfigTexturable(kAlpha_half_GrPixelConfig)) { |
| if (kGL_GrGLStandard == standard) { |
| fConfigRenderSupport[kAlpha_half_GrPixelConfig][kNo_MSAA] = true; |
| fConfigRenderSupport[kAlpha_half_GrPixelConfig][kYes_MSAA] = true; |
| } else if (ctxInfo.version() >= GR_GL_VER(3,0)) { |
| fConfigRenderSupport[kAlpha_half_GrPixelConfig][kNo_MSAA] = true; |
| // for now we don't support floating point MSAA on ES |
| fConfigRenderSupport[kAlpha_half_GrPixelConfig][kYes_MSAA] = false; |
| } else { |
| if (ctxInfo.hasExtension("GL_EXT_color_buffer_half_float") && fTextureRedSupport) { |
| fConfigRenderSupport[kAlpha_half_GrPixelConfig][kNo_MSAA] = true; |
| } else { |
| fConfigRenderSupport[kAlpha_half_GrPixelConfig][kNo_MSAA] = false; |
| } |
| // for now we don't support floating point MSAA on ES |
| fConfigRenderSupport[kAlpha_half_GrPixelConfig][kYes_MSAA] = false; |
| } |
| } |
| |
| if (this->isConfigTexturable(kRGBA_half_GrPixelConfig)) { |
| if (kGL_GrGLStandard == standard) { |
| fConfigRenderSupport[kRGBA_half_GrPixelConfig][kNo_MSAA] = true; |
| fConfigRenderSupport[kRGBA_half_GrPixelConfig][kYes_MSAA] = true; |
| } else if (ctxInfo.version() >= GR_GL_VER(3, 0)) { |
| fConfigRenderSupport[kRGBA_half_GrPixelConfig][kNo_MSAA] = true; |
| // for now we don't support floating point MSAA on ES |
| fConfigRenderSupport[kRGBA_half_GrPixelConfig][kYes_MSAA] = false; |
| } else { |
| if (ctxInfo.hasExtension("GL_EXT_color_buffer_half_float")) { |
| fConfigRenderSupport[kRGBA_half_GrPixelConfig][kNo_MSAA] = true; |
| } else { |
| fConfigRenderSupport[kRGBA_half_GrPixelConfig][kNo_MSAA] = false; |
| } |
| // for now we don't support floating point MSAA on ES |
| fConfigRenderSupport[kRGBA_half_GrPixelConfig][kYes_MSAA] = false; |
| } |
| } |
| |
| // If we don't support MSAA then undo any places above where we set a config as renderable with |
| // msaa. |
| if (kNone_MSFBOType == fMSFBOType) { |
| for (int i = 0; i < kGrPixelConfigCnt; ++i) { |
| fConfigRenderSupport[i][kYes_MSAA] = false; |
| } |
| } |
| } |
| |
| void GrGLCaps::initConfigTexturableTable(const GrGLContextInfo& ctxInfo, const GrGLInterface* gli) { |
| GrGLStandard standard = ctxInfo.standard(); |
| GrGLVersion version = ctxInfo.version(); |
| |
| // Base texture support |
| fConfigTextureSupport[kAlpha_8_GrPixelConfig] = true; |
| fConfigTextureSupport[kRGB_565_GrPixelConfig] = true; |
| fConfigTextureSupport[kRGBA_4444_GrPixelConfig] = true; |
| fConfigTextureSupport[kRGBA_8888_GrPixelConfig] = true; |
| |
| // Check for 8-bit palette.. |
| GrGLint numFormats; |
| GR_GL_GetIntegerv(gli, GR_GL_NUM_COMPRESSED_TEXTURE_FORMATS, &numFormats); |
| if (numFormats) { |
| SkAutoSTMalloc<10, GrGLint> formats(numFormats); |
| GR_GL_GetIntegerv(gli, GR_GL_COMPRESSED_TEXTURE_FORMATS, formats); |
| for (int i = 0; i < numFormats; ++i) { |
| if (GR_GL_PALETTE8_RGBA8 == formats[i]) { |
| fConfigTextureSupport[kIndex_8_GrPixelConfig] = true; |
| break; |
| } |
| } |
| } |
| |
| // Check for BGRA |
| if (kGL_GrGLStandard == standard) { |
| fConfigTextureSupport[kBGRA_8888_GrPixelConfig] = |
| version >= GR_GL_VER(1,2) || ctxInfo.hasExtension("GL_EXT_bgra"); |
| } else { |
| if (ctxInfo.hasExtension("GL_APPLE_texture_format_BGRA8888")) { |
| fConfigTextureSupport[kBGRA_8888_GrPixelConfig] = true; |
| } else if (ctxInfo.hasExtension("GL_EXT_texture_format_BGRA8888")) { |
| fConfigTextureSupport[kBGRA_8888_GrPixelConfig] = true; |
| fBGRAIsInternalFormat = true; |
| } |
| SkASSERT(fConfigTextureSupport[kBGRA_8888_GrPixelConfig] || |
| kSkia8888_GrPixelConfig != kBGRA_8888_GrPixelConfig); |
| } |
| |
| // Check for sRGBA |
| if (kGL_GrGLStandard == standard) { |
| fConfigTextureSupport[kSRGBA_8888_GrPixelConfig] = |
| (version >= GR_GL_VER(3,0) || ctxInfo.hasExtension("GL_EXT_texture_sRGB")); |
| } else { |
| fConfigTextureSupport[kSRGBA_8888_GrPixelConfig] = |
| (version >= GR_GL_VER(3,0) || ctxInfo.hasExtension("GL_EXT_sRGB")); |
| } |
| |
| // Compressed texture support |
| |
| // glCompressedTexImage2D is available on all OpenGL ES devices... |
| // however, it is only available on standard OpenGL after version 1.3 |
| bool hasCompressTex2D = (kGL_GrGLStandard != standard || version >= GR_GL_VER(1, 3)); |
| |
| fCompressedTexSubImageSupport = |
| hasCompressTex2D && (gli->fFunctions.fCompressedTexSubImage2D); |
| |
| // Check for ETC1 |
| bool hasETC1 = false; |
| |
| // First check version for support |
| if (kGL_GrGLStandard == standard) { |
| hasETC1 = hasCompressTex2D && |
| (version >= GR_GL_VER(4, 3) || |
| ctxInfo.hasExtension("GL_ARB_ES3_compatibility")); |
| } else { |
| hasETC1 = hasCompressTex2D && |
| (version >= GR_GL_VER(3, 0) || |
| ctxInfo.hasExtension("GL_OES_compressed_ETC1_RGB8_texture") || |
| // ETC2 is a superset of ETC1, so we can just check for that, too. |
| (ctxInfo.hasExtension("GL_OES_compressed_ETC2_RGB8_texture") && |
| ctxInfo.hasExtension("GL_OES_compressed_ETC2_RGBA8_texture"))); |
| } |
| fConfigTextureSupport[kETC1_GrPixelConfig] = hasETC1; |
| |
| // Check for LATC under its various forms |
| LATCAlias alias = kLATC_LATCAlias; |
| bool hasLATC = hasCompressTex2D && |
| (ctxInfo.hasExtension("GL_EXT_texture_compression_latc") || |
| ctxInfo.hasExtension("GL_NV_texture_compression_latc")); |
| |
| // Check for RGTC |
| if (!hasLATC) { |
| // If we're using OpenGL 3.0 or later, then we have RGTC, an identical compression format. |
| if (kGL_GrGLStandard == standard) { |
| hasLATC = version >= GR_GL_VER(3, 0); |
| } |
| |
| if (!hasLATC) { |
| hasLATC = |
| ctxInfo.hasExtension("GL_EXT_texture_compression_rgtc") || |
| ctxInfo.hasExtension("GL_ARB_texture_compression_rgtc"); |
| } |
| |
| if (hasLATC) { |
| alias = kRGTC_LATCAlias; |
| } |
| } |
| |
| // Check for 3DC |
| if (!hasLATC) { |
| hasLATC = ctxInfo.hasExtension("GL_AMD_compressed_3DC_texture"); |
| if (hasLATC) { |
| alias = k3DC_LATCAlias; |
| } |
| } |
| |
| fConfigTextureSupport[kLATC_GrPixelConfig] = hasLATC; |
| fLATCAlias = alias; |
| |
| // Check for R11_EAC ... We don't support R11_EAC on desktop, as most |
| // cards default to decompressing the textures in the driver, and is |
| // generally slower. |
| if (kGL_GrGLStandard != standard) { |
| fConfigTextureSupport[kR11_EAC_GrPixelConfig] = version >= GR_GL_VER(3, 0); |
| } |
| |
| // Check for ASTC |
| fConfigTextureSupport[kASTC_12x12_GrPixelConfig] = |
| ctxInfo.hasExtension("GL_KHR_texture_compression_astc_hdr") || |
| ctxInfo.hasExtension("GL_KHR_texture_compression_astc_ldr") || |
| ctxInfo.hasExtension("GL_OES_texture_compression_astc"); |
| |
| // Check for floating point texture support |
| // NOTE: We disallow floating point textures on ES devices if linear |
| // filtering modes are not supported. This is for simplicity, but a more |
| // granular approach is possible. Coincidentally, floating point textures became part of |
| // the standard in ES3.1 / OGL 3.1, hence the shorthand |
| bool hasFPTextures = version >= GR_GL_VER(3, 1); |
| if (!hasFPTextures) { |
| hasFPTextures = ctxInfo.hasExtension("GL_ARB_texture_float") || |
| (ctxInfo.hasExtension("GL_OES_texture_float_linear") && |
| ctxInfo.hasExtension("GL_OES_texture_float")); |
| } |
| fConfigTextureSupport[kRGBA_float_GrPixelConfig] = hasFPTextures; |
| |
| // Check for fp16 texture support |
| // NOTE: We disallow floating point textures on ES devices if linear |
| // filtering modes are not supported. This is for simplicity, but a more |
| // granular approach is possible. Coincidentally, 16-bit floating point textures became part of |
| // the standard in ES3.1 / OGL 3.1, hence the shorthand |
| bool hasHalfFPTextures = version >= GR_GL_VER(3, 1); |
| if (!hasHalfFPTextures) { |
| hasHalfFPTextures = ctxInfo.hasExtension("GL_ARB_texture_float") || |
| (ctxInfo.hasExtension("GL_OES_texture_half_float_linear") && |
| ctxInfo.hasExtension("GL_OES_texture_half_float")); |
| } |
| fConfigTextureSupport[kAlpha_half_GrPixelConfig] = hasHalfFPTextures; |
| fConfigTextureSupport[kRGBA_half_GrPixelConfig] = hasHalfFPTextures; |
| } |
| |
| bool GrGLCaps::doReadPixelsSupported(const GrGLInterface* intf, |
| GrGLenum format, |
| GrGLenum type) const { |
| if (GR_GL_RGBA == format && GR_GL_UNSIGNED_BYTE == type) { |
| // ES 2 guarantees this format is supported |
| return true; |
| } |
| |
| if (!fTwoFormatLimit) { |
| // not limited by ES 2's constraints |
| return true; |
| } |
| |
| GrGLint otherFormat = GR_GL_RGBA; |
| GrGLint otherType = GR_GL_UNSIGNED_BYTE; |
| |
| // The other supported format/type combo supported for ReadPixels |
| // can change based on which render target is bound |
| GR_GL_GetIntegerv(intf, |
| GR_GL_IMPLEMENTATION_COLOR_READ_FORMAT, |
| &otherFormat); |
| |
| GR_GL_GetIntegerv(intf, |
| GR_GL_IMPLEMENTATION_COLOR_READ_TYPE, |
| &otherType); |
| |
| return (GrGLenum)otherFormat == format && (GrGLenum)otherType == type; |
| } |
| |
| bool GrGLCaps::readPixelsSupported(const GrGLInterface* intf, |
| GrGLenum format, |
| GrGLenum type, |
| GrGLenum currFboFormat) const { |
| ReadPixelsSupportedFormat key = {format, type, currFboFormat}; |
| if (const bool* supported = fReadPixelsSupportedCache.find(key)) { |
| return *supported; |
| } |
| bool supported = this->doReadPixelsSupported(intf, format, type); |
| fReadPixelsSupportedCache.set(key, supported); |
| return supported; |
| } |
| |
| void GrGLCaps::initFSAASupport(const GrGLContextInfo& ctxInfo, const GrGLInterface* gli) { |
| |
| fMSFBOType = kNone_MSFBOType; |
| if (kGL_GrGLStandard != ctxInfo.standard()) { |
| // We prefer the EXT/IMG extension over ES3 MSAA because we've observed |
| // ES3 driver bugs on at least one device with a tiled GPU (N10). |
| if (ctxInfo.hasExtension("GL_EXT_multisampled_render_to_texture")) { |
| fMSFBOType = kES_EXT_MsToTexture_MSFBOType; |
| } else if (ctxInfo.hasExtension("GL_IMG_multisampled_render_to_texture")) { |
| fMSFBOType = kES_IMG_MsToTexture_MSFBOType; |
| } else if (ctxInfo.version() >= GR_GL_VER(3,0)) { |
| fMSFBOType = GrGLCaps::kES_3_0_MSFBOType; |
| } else if (ctxInfo.hasExtension("GL_CHROMIUM_framebuffer_multisample")) { |
| // chrome's extension is equivalent to the EXT msaa |
| // and fbo_blit extensions. |
| fMSFBOType = kDesktop_EXT_MSFBOType; |
| } else if (ctxInfo.hasExtension("GL_APPLE_framebuffer_multisample")) { |
| fMSFBOType = kES_Apple_MSFBOType; |
| } |
| } else { |
| if ((ctxInfo.version() >= GR_GL_VER(3,0)) || |
| ctxInfo.hasExtension("GL_ARB_framebuffer_object")) { |
| fMSFBOType = GrGLCaps::kDesktop_ARB_MSFBOType; |
| } else if (ctxInfo.hasExtension("GL_EXT_framebuffer_multisample") && |
| ctxInfo.hasExtension("GL_EXT_framebuffer_blit")) { |
| fMSFBOType = GrGLCaps::kDesktop_EXT_MSFBOType; |
| } |
| } |
| } |
| |
| namespace { |
| const GrGLuint kUnknownBitCount = GrGLStencilAttachment::kUnknownBitCount; |
| } |
| |
| void GrGLCaps::initStencilFormats(const GrGLContextInfo& ctxInfo) { |
| |
| // Build up list of legal stencil formats (though perhaps not supported on |
| // the particular gpu/driver) from most preferred to least. |
| |
| // these consts are in order of most preferred to least preferred |
| // we don't bother with GL_STENCIL_INDEX1 or GL_DEPTH32F_STENCIL8 |
| |
| static const StencilFormat |
| // internal Format stencil bits total bits packed? |
| gS8 = {GR_GL_STENCIL_INDEX8, 8, 8, false}, |
| gS16 = {GR_GL_STENCIL_INDEX16, 16, 16, false}, |
| gD24S8 = {GR_GL_DEPTH24_STENCIL8, 8, 32, true }, |
| gS4 = {GR_GL_STENCIL_INDEX4, 4, 4, false}, |
| // gS = {GR_GL_STENCIL_INDEX, kUnknownBitCount, kUnknownBitCount, false}, |
| gDS = {GR_GL_DEPTH_STENCIL, kUnknownBitCount, kUnknownBitCount, true }; |
| |
| if (kGL_GrGLStandard == ctxInfo.standard()) { |
| bool supportsPackedDS = |
| ctxInfo.version() >= GR_GL_VER(3,0) || |
| ctxInfo.hasExtension("GL_EXT_packed_depth_stencil") || |
| ctxInfo.hasExtension("GL_ARB_framebuffer_object"); |
| |
| // S1 thru S16 formats are in GL 3.0+, EXT_FBO, and ARB_FBO since we |
| // require FBO support we can expect these are legal formats and don't |
| // check. These also all support the unsized GL_STENCIL_INDEX. |
| fStencilFormats.push_back() = gS8; |
| fStencilFormats.push_back() = gS16; |
| if (supportsPackedDS) { |
| fStencilFormats.push_back() = gD24S8; |
| } |
| fStencilFormats.push_back() = gS4; |
| if (supportsPackedDS) { |
| fStencilFormats.push_back() = gDS; |
| } |
| } else { |
| // ES2 has STENCIL_INDEX8 without extensions but requires extensions |
| // for other formats. |
| // ES doesn't support using the unsized format. |
| |
| fStencilFormats.push_back() = gS8; |
| //fStencilFormats.push_back() = gS16; |
| if (ctxInfo.version() >= GR_GL_VER(3,0) || |
| ctxInfo.hasExtension("GL_OES_packed_depth_stencil")) { |
| fStencilFormats.push_back() = gD24S8; |
| } |
| if (ctxInfo.hasExtension("GL_OES_stencil4")) { |
| fStencilFormats.push_back() = gS4; |
| } |
| } |
| SkASSERT(0 == fStencilVerifiedColorConfigs.count()); |
| fStencilVerifiedColorConfigs.push_back_n(fStencilFormats.count()); |
| } |
| |
| void GrGLCaps::markColorConfigAndStencilFormatAsVerified( |
| GrPixelConfig config, |
| const GrGLStencilAttachment::Format& format) { |
| #if !GR_GL_CHECK_FBO_STATUS_ONCE_PER_FORMAT |
| return; |
| #endif |
| SkASSERT((unsigned)config < (unsigned)kGrPixelConfigCnt); |
| SkASSERT(fStencilFormats.count() == fStencilVerifiedColorConfigs.count()); |
| int count = fStencilFormats.count(); |
| // we expect a really small number of possible formats so linear search |
| // should be OK |
| SkASSERT(count < 16); |
| for (int i = 0; i < count; ++i) { |
| if (format.fInternalFormat == |
| fStencilFormats[i].fInternalFormat) { |
| fStencilVerifiedColorConfigs[i].markVerified(config); |
| return; |
| } |
| } |
| SkFAIL("Why are we seeing a stencil format that " |
| "GrGLCaps doesn't know about."); |
| } |
| |
| bool GrGLCaps::isColorConfigAndStencilFormatVerified( |
| GrPixelConfig config, |
| const GrGLStencilAttachment::Format& format) const { |
| #if !GR_GL_CHECK_FBO_STATUS_ONCE_PER_FORMAT |
| return false; |
| #endif |
| SkASSERT((unsigned)config < (unsigned)kGrPixelConfigCnt); |
| int count = fStencilFormats.count(); |
| // we expect a really small number of possible formats so linear search |
| // should be OK |
| SkASSERT(count < 16); |
| for (int i = 0; i < count; ++i) { |
| if (format.fInternalFormat == |
| fStencilFormats[i].fInternalFormat) { |
| return fStencilVerifiedColorConfigs[i].isVerified(config); |
| } |
| } |
| SkFAIL("Why are we seeing a stencil format that " |
| "GLCaps doesn't know about."); |
| return false; |
| } |
| |
| SkString GrGLCaps::dump() const { |
| |
| SkString r = INHERITED::dump(); |
| |
| r.appendf("--- GL-Specific ---\n"); |
| for (int i = 0; i < fStencilFormats.count(); ++i) { |
| r.appendf("Stencil Format %d, stencil bits: %02d, total bits: %02d\n", |
| i, |
| fStencilFormats[i].fStencilBits, |
| fStencilFormats[i].fTotalBits); |
| } |
| |
| static const char* kMSFBOExtStr[] = { |
| "None", |
| "ARB", |
| "EXT", |
| "ES 3.0", |
| "Apple", |
| "IMG MS To Texture", |
| "EXT MS To Texture", |
| }; |
| GR_STATIC_ASSERT(0 == kNone_MSFBOType); |
| GR_STATIC_ASSERT(1 == kDesktop_ARB_MSFBOType); |
| GR_STATIC_ASSERT(2 == kDesktop_EXT_MSFBOType); |
| GR_STATIC_ASSERT(3 == kES_3_0_MSFBOType); |
| GR_STATIC_ASSERT(4 == kES_Apple_MSFBOType); |
| GR_STATIC_ASSERT(5 == kES_IMG_MsToTexture_MSFBOType); |
| GR_STATIC_ASSERT(6 == kES_EXT_MsToTexture_MSFBOType); |
| GR_STATIC_ASSERT(SK_ARRAY_COUNT(kMSFBOExtStr) == kLast_MSFBOType + 1); |
| |
| static const char* kInvalidateFBTypeStr[] = { |
| "None", |
| "Discard", |
| "Invalidate", |
| }; |
| GR_STATIC_ASSERT(0 == kNone_InvalidateFBType); |
| GR_STATIC_ASSERT(1 == kDiscard_InvalidateFBType); |
| GR_STATIC_ASSERT(2 == kInvalidate_InvalidateFBType); |
| GR_STATIC_ASSERT(SK_ARRAY_COUNT(kInvalidateFBTypeStr) == kLast_InvalidateFBType + 1); |
| |
| static const char* kMapBufferTypeStr[] = { |
| "None", |
| "MapBuffer", |
| "MapBufferRange", |
| "Chromium", |
| }; |
| GR_STATIC_ASSERT(0 == kNone_MapBufferType); |
| GR_STATIC_ASSERT(1 == kMapBuffer_MapBufferType); |
| GR_STATIC_ASSERT(2 == kMapBufferRange_MapBufferType); |
| GR_STATIC_ASSERT(3 == kChromium_MapBufferType); |
| GR_STATIC_ASSERT(SK_ARRAY_COUNT(kMapBufferTypeStr) == kLast_MapBufferType + 1); |
| |
| r.appendf("Core Profile: %s\n", (fIsCoreProfile ? "YES" : "NO")); |
| r.appendf("MSAA Type: %s\n", kMSFBOExtStr[fMSFBOType]); |
| r.appendf("Invalidate FB Type: %s\n", kInvalidateFBTypeStr[fInvalidateFBType]); |
| r.appendf("Map Buffer Type: %s\n", kMapBufferTypeStr[fMapBufferType]); |
| r.appendf("Max FS Uniform Vectors: %d\n", fMaxFragmentUniformVectors); |
| r.appendf("Max FS Texture Units: %d\n", fMaxFragmentTextureUnits); |
| r.appendf("Max Vertex Attributes: %d\n", fMaxVertexAttributes); |
| r.appendf("Support RGBA8 Render Buffer: %s\n", (fRGBA8RenderbufferSupport ? "YES": "NO")); |
| r.appendf("BGRA is an internal format: %s\n", (fBGRAIsInternalFormat ? "YES": "NO")); |
| r.appendf("Support texture swizzle: %s\n", (fTextureSwizzleSupport ? "YES": "NO")); |
| r.appendf("Unpack Row length support: %s\n", (fUnpackRowLengthSupport ? "YES": "NO")); |
| r.appendf("Unpack Flip Y support: %s\n", (fUnpackFlipYSupport ? "YES": "NO")); |
| r.appendf("Pack Row length support: %s\n", (fPackRowLengthSupport ? "YES": "NO")); |
| r.appendf("Pack Flip Y support: %s\n", (fPackFlipYSupport ? "YES": "NO")); |
| |
| r.appendf("Texture Usage support: %s\n", (fTextureUsageSupport ? "YES": "NO")); |
| r.appendf("Texture Storage support: %s\n", (fTexStorageSupport ? "YES": "NO")); |
| r.appendf("GL_R support: %s\n", (fTextureRedSupport ? "YES": "NO")); |
| r.appendf("GL_ARB_imaging support: %s\n", (fImagingSupport ? "YES": "NO")); |
| r.appendf("Two Format Limit: %s\n", (fTwoFormatLimit ? "YES": "NO")); |
| r.appendf("Fragment coord conventions support: %s\n", |
| (fFragCoordsConventionSupport ? "YES": "NO")); |
| r.appendf("Vertex array object support: %s\n", (fVertexArrayObjectSupport ? "YES": "NO")); |
| r.appendf("Multisample disable support: %s\n", (fMultisampleDisableSupport ? "YES" : "NO")); |
| r.appendf("Use non-VBO for dynamic data: %s\n", |
| (fUseNonVBOVertexAndIndexDynamicData ? "YES" : "NO")); |
| r.appendf("Full screen clear is free: %s\n", (fFullClearIsFree ? "YES" : "NO")); |
| return r; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////////////////// |
| |
| GrGLSLCaps::GrGLSLCaps(const GrGLContextInfo& ctxInfo, |
| const GrGLInterface* gli, |
| const GrGLCaps& glCaps) { |
| fDropsTileOnZeroDivide = false; |
| fFBFetchSupport = false; |
| fFBFetchNeedsCustomOutput = false; |
| fAdvBlendEqInteraction = kNotSupported_AdvBlendEqInteraction; |
| fFBFetchColorName = NULL; |
| fFBFetchExtensionString = NULL; |
| this->init(ctxInfo, gli, glCaps); |
| } |
| |
| void GrGLSLCaps::init(const GrGLContextInfo& ctxInfo, |
| const GrGLInterface* gli, |
| const GrGLCaps& glCaps) { |
| GrGLStandard standard = ctxInfo.standard(); |
| GrGLVersion version = ctxInfo.version(); |
| |
| /************************************************************************** |
| * Caps specific to GrGLSLCaps |
| **************************************************************************/ |
| |
| if (kGLES_GrGLStandard == standard) { |
| if (ctxInfo.hasExtension("GL_EXT_shader_framebuffer_fetch")) { |
| fFBFetchNeedsCustomOutput = (version >= GR_GL_VER(3, 0)); |
| fFBFetchSupport = true; |
| fFBFetchColorName = "gl_LastFragData[0]"; |
| fFBFetchExtensionString = "GL_EXT_shader_framebuffer_fetch"; |
| } |
| else if (ctxInfo.hasExtension("GL_NV_shader_framebuffer_fetch")) { |
| // Actually, we haven't seen an ES3.0 device with this extension yet, so we don't know |
| fFBFetchNeedsCustomOutput = false; |
| fFBFetchSupport = true; |
| fFBFetchColorName = "gl_LastFragData[0]"; |
| fFBFetchExtensionString = "GL_NV_shader_framebuffer_fetch"; |
| } |
| else if (ctxInfo.hasExtension("GL_ARM_shader_framebuffer_fetch")) { |
| // The arm extension also requires an additional flag which we will set onResetContext |
| fFBFetchNeedsCustomOutput = false; |
| fFBFetchSupport = true; |
| fFBFetchColorName = "gl_LastFragColorARM"; |
| fFBFetchExtensionString = "GL_ARM_shader_framebuffer_fetch"; |
| } |
| } |
| |
| // Adreno GPUs have a tendency to drop tiles when there is a divide-by-zero in a shader |
| fDropsTileOnZeroDivide = kQualcomm_GrGLVendor == ctxInfo.vendor(); |
| |
| /************************************************************************** |
| * GrShaderCaps fields |
| **************************************************************************/ |
| |
| fPathRenderingSupport = ctxInfo.hasExtension("GL_NV_path_rendering"); |
| |
| if (fPathRenderingSupport) { |
| if (kGL_GrGLStandard == standard) { |
| // We only support v1.3+ of GL_NV_path_rendering which allows us to |
| // set individual fragment inputs with ProgramPathFragmentInputGen. The API |
| // additions are detected by checking the existence of the function. |
| fPathRenderingSupport = ctxInfo.hasExtension("GL_EXT_direct_state_access") && |
| ((ctxInfo.version() >= GR_GL_VER(4, 3) || |
| ctxInfo.hasExtension("GL_ARB_program_interface_query")) && |
| gli->fFunctions.fProgramPathFragmentInputGen); |
| } |
| else { |
| fPathRenderingSupport = ctxInfo.version() >= GR_GL_VER(3, 1); |
| } |
| } |
| |
| // For now these two are equivalent but we could have dst read in shader via some other method |
| fDstReadInShaderSupport = fFBFetchSupport; |
| |
| // Enable supported shader-related caps |
| if (kGL_GrGLStandard == standard) { |
| fDualSourceBlendingSupport = ctxInfo.version() >= GR_GL_VER(3, 3) || |
| ctxInfo.hasExtension("GL_ARB_blend_func_extended"); |
| fShaderDerivativeSupport = true; |
| // we don't support GL_ARB_geometry_shader4, just GL 3.2+ GS |
| fGeometryShaderSupport = ctxInfo.version() >= GR_GL_VER(3, 2) && |
| ctxInfo.glslGeneration() >= k150_GrGLSLGeneration; |
| } |
| else { |
| fShaderDerivativeSupport = ctxInfo.version() >= GR_GL_VER(3, 0) || |
| ctxInfo.hasExtension("GL_OES_standard_derivatives"); |
| } |
| |
| // We need dual source blending and the ability to disable multisample in order to support mixed |
| // samples in every corner case. |
| if (fDualSourceBlendingSupport && glCaps.multisampleDisableSupport()) { |
| // We understand "mixed samples" to mean the collective capability of 3 different extensions |
| fMixedSamplesSupport = ctxInfo.hasExtension("GL_NV_framebuffer_mixed_samples") && |
| ctxInfo.hasExtension("GL_NV_sample_mask_override_coverage") && |
| ctxInfo.hasExtension("GL_EXT_raster_multisample"); |
| } |
| |
| if (glCaps.advancedBlendEquationSupport()) { |
| bool coherent = glCaps.advancedCoherentBlendEquationSupport(); |
| if (ctxInfo.hasExtension(coherent ? "GL_NV_blend_equation_advanced_coherent" |
| : "GL_NV_blend_equation_advanced")) { |
| fAdvBlendEqInteraction = kAutomatic_AdvBlendEqInteraction; |
| } else { |
| fAdvBlendEqInteraction = kGeneralEnable_AdvBlendEqInteraction; |
| // TODO: Use the following on any platform where "blend_support_all_equations" is slow. |
| //fAdvBlendEqInteraction = kSpecificEnables_AdvBlendEqInteraction; |
| } |
| } |
| |
| this->initShaderPrecisionTable(ctxInfo, gli); |
| } |
| |
| SkString GrGLSLCaps::dump() const { |
| SkString r = INHERITED::dump(); |
| |
| static const char* kAdvBlendEqInteractionStr[] = { |
| "Not Supported", |
| "Automatic", |
| "General Enable", |
| "Specific Enables", |
| }; |
| GR_STATIC_ASSERT(0 == kNotSupported_AdvBlendEqInteraction); |
| GR_STATIC_ASSERT(1 == kAutomatic_AdvBlendEqInteraction); |
| GR_STATIC_ASSERT(2 == kGeneralEnable_AdvBlendEqInteraction); |
| GR_STATIC_ASSERT(3 == kSpecificEnables_AdvBlendEqInteraction); |
| GR_STATIC_ASSERT(SK_ARRAY_COUNT(kAdvBlendEqInteractionStr) == kLast_AdvBlendEqInteraction + 1); |
| |
| r.appendf("--- GLSL-Specific ---\n"); |
| |
| r.appendf("FB Fetch Support: %s\n", (fFBFetchSupport ? "YES" : "NO")); |
| r.appendf("Drops tile on zero divide: %s\n", (fDropsTileOnZeroDivide ? "YES" : "NO")); |
| r.appendf("Advanced blend equation interaction: %s\n", |
| kAdvBlendEqInteractionStr[fAdvBlendEqInteraction]); |
| return r; |
| } |
| |
| static GrGLenum precision_to_gl_float_type(GrSLPrecision p) { |
| switch (p) { |
| case kLow_GrSLPrecision: |
| return GR_GL_LOW_FLOAT; |
| case kMedium_GrSLPrecision: |
| return GR_GL_MEDIUM_FLOAT; |
| case kHigh_GrSLPrecision: |
| return GR_GL_HIGH_FLOAT; |
| } |
| SkFAIL("Unknown precision."); |
| return -1; |
| } |
| |
| static GrGLenum shader_type_to_gl_shader(GrShaderType type) { |
| switch (type) { |
| case kVertex_GrShaderType: |
| return GR_GL_VERTEX_SHADER; |
| case kGeometry_GrShaderType: |
| return GR_GL_GEOMETRY_SHADER; |
| case kFragment_GrShaderType: |
| return GR_GL_FRAGMENT_SHADER; |
| } |
| SkFAIL("Unknown shader type."); |
| return -1; |
| } |
| |
| void GrGLSLCaps::initShaderPrecisionTable(const GrGLContextInfo& ctxInfo, |
| const GrGLInterface* intf) { |
| if (kGLES_GrGLStandard == ctxInfo.standard() || ctxInfo.version() >= GR_GL_VER(4, 1) || |
| ctxInfo.hasExtension("GL_ARB_ES2_compatibility")) { |
| for (int s = 0; s < kGrShaderTypeCount; ++s) { |
| if (kGeometry_GrShaderType != s) { |
| GrShaderType shaderType = static_cast<GrShaderType>(s); |
| GrGLenum glShader = shader_type_to_gl_shader(shaderType); |
| PrecisionInfo* first = NULL; |
| fShaderPrecisionVaries = false; |
| for (int p = 0; p < kGrSLPrecisionCount; ++p) { |
| GrSLPrecision precision = static_cast<GrSLPrecision>(p); |
| GrGLenum glPrecision = precision_to_gl_float_type(precision); |
| GrGLint range[2]; |
| GrGLint bits; |
| GR_GL_GetShaderPrecisionFormat(intf, glShader, glPrecision, range, &bits); |
| if (bits) { |
| fFloatPrecisions[s][p].fLogRangeLow = range[0]; |
| fFloatPrecisions[s][p].fLogRangeHigh = range[1]; |
| fFloatPrecisions[s][p].fBits = bits; |
| if (!first) { |
| first = &fFloatPrecisions[s][p]; |
| } |
| else if (!fShaderPrecisionVaries) { |
| fShaderPrecisionVaries = (*first != fFloatPrecisions[s][p]); |
| } |
| } |
| } |
| } |
| } |
| } |
| else { |
| // We're on a desktop GL that doesn't have precision info. Assume they're all 32bit float. |
| fShaderPrecisionVaries = false; |
| for (int s = 0; s < kGrShaderTypeCount; ++s) { |
| if (kGeometry_GrShaderType != s) { |
| for (int p = 0; p < kGrSLPrecisionCount; ++p) { |
| fFloatPrecisions[s][p].fLogRangeLow = 127; |
| fFloatPrecisions[s][p].fLogRangeHigh = 127; |
| fFloatPrecisions[s][p].fBits = 23; |
| } |
| } |
| } |
| } |
| // GetShaderPrecisionFormat doesn't accept GL_GEOMETRY_SHADER as a shader type. Assume they're |
| // the same as the vertex shader. Only fragment shaders were ever allowed to omit support for |
| // highp. GS was added after GetShaderPrecisionFormat was added to the list of features that |
| // are recommended against. |
| if (fGeometryShaderSupport) { |
| for (int p = 0; p < kGrSLPrecisionCount; ++p) { |
| fFloatPrecisions[kGeometry_GrShaderType][p] = fFloatPrecisions[kVertex_GrShaderType][p]; |
| } |
| } |
| } |
| |
| |
| |
| |
