| /* |
| * 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() { |
| this->reset(); |
| } |
| |
| void GrGLCaps::reset() { |
| INHERITED::reset(); |
| |
| fVerifiedColorConfigs.reset(); |
| fStencilFormats.reset(); |
| fStencilVerifiedColorConfigs.reset(); |
| fMSFBOType = kNone_MSFBOType; |
| fFBFetchType = kNone_FBFetchType; |
| fInvalidateFBType = kNone_InvalidateFBType; |
| fLATCAlias = kLATC_LATCAlias; |
| fMapBufferType = kNone_MapBufferType; |
| fMaxFragmentUniformVectors = 0; |
| fMaxVertexAttributes = 0; |
| fMaxFragmentTextureUnits = 0; |
| fMaxFixedFunctionTextureCoords = 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; |
| fUseNonVBOVertexAndIndexDynamicData = false; |
| fIsCoreProfile = false; |
| fFullClearIsFree = false; |
| fDropsTileOnZeroDivide = false; |
| } |
| |
| GrGLCaps::GrGLCaps(const GrGLCaps& caps) : GrDrawTargetCaps() { |
| *this = caps; |
| } |
| |
| GrGLCaps& GrGLCaps::operator= (const GrGLCaps& caps) { |
| INHERITED::operator=(caps); |
| fVerifiedColorConfigs = caps.fVerifiedColorConfigs; |
| fStencilFormats = caps.fStencilFormats; |
| fStencilVerifiedColorConfigs = caps.fStencilVerifiedColorConfigs; |
| fLATCAlias = caps.fLATCAlias; |
| fMaxFragmentUniformVectors = caps.fMaxFragmentUniformVectors; |
| fMaxVertexAttributes = caps.fMaxVertexAttributes; |
| fMaxFragmentTextureUnits = caps.fMaxFragmentTextureUnits; |
| fMaxFixedFunctionTextureCoords = caps.fMaxFixedFunctionTextureCoords; |
| fMSFBOType = caps.fMSFBOType; |
| fFBFetchType = caps.fFBFetchType; |
| fInvalidateFBType = caps.fInvalidateFBType; |
| fMapBufferType = caps.fMapBufferType; |
| fRGBA8RenderbufferSupport = caps.fRGBA8RenderbufferSupport; |
| fBGRAIsInternalFormat = caps.fBGRAIsInternalFormat; |
| fTextureSwizzleSupport = caps.fTextureSwizzleSupport; |
| fUnpackRowLengthSupport = caps.fUnpackRowLengthSupport; |
| fUnpackFlipYSupport = caps.fUnpackFlipYSupport; |
| fPackRowLengthSupport = caps.fPackRowLengthSupport; |
| fPackFlipYSupport = caps.fPackFlipYSupport; |
| fTextureUsageSupport = caps.fTextureUsageSupport; |
| fTexStorageSupport = caps.fTexStorageSupport; |
| fTextureRedSupport = caps.fTextureRedSupport; |
| fImagingSupport = caps.fImagingSupport; |
| fTwoFormatLimit = caps.fTwoFormatLimit; |
| fFragCoordsConventionSupport = caps.fFragCoordsConventionSupport; |
| fVertexArrayObjectSupport = caps.fVertexArrayObjectSupport; |
| fUseNonVBOVertexAndIndexDynamicData = caps.fUseNonVBOVertexAndIndexDynamicData; |
| fIsCoreProfile = caps.fIsCoreProfile; |
| fFullClearIsFree = caps.fFullClearIsFree; |
| fDropsTileOnZeroDivide = caps.fDropsTileOnZeroDivide; |
| |
| return *this; |
| } |
| |
| bool GrGLCaps::init(const GrGLContextInfo& ctxInfo, const GrGLInterface* gli) { |
| |
| this->reset(); |
| if (!ctxInfo.isInitialized()) { |
| return false; |
| } |
| |
| 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); |
| } |
| if (!fIsCoreProfile) { |
| GR_GL_GetIntegerv(gli, GR_GL_MAX_TEXTURE_COORDS, &fMaxFixedFunctionTextureCoords); |
| // Sanity check |
| SkASSERT(fMaxFixedFunctionTextureCoords > 0 && fMaxFixedFunctionTextureCoords < 128); |
| } |
| } |
| 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"); |
| } |
| |
| // ARB_texture_rg is part of OpenGL 3.0, but mesa doesn't support it if |
| // it doesn't have ARB_texture_rg extension. |
| if (kGL_GrGLStandard == standard) { |
| if (ctxInfo.isMesa()) { |
| fTextureRedSupport = ctxInfo.hasExtension("GL_ARB_texture_rg"); |
| } else { |
| 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; |
| |
| // Known issue on at least some Intel platforms: |
| // http://code.google.com/p/skia/issues/detail?id=946 |
| if (kIntel_GrGLVendor != ctxInfo.vendor()) { |
| 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())) { |
| fUseNonVBOVertexAndIndexDynamicData = true; |
| } |
| |
| if ((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"); |
| } else { |
| fVertexArrayObjectSupport = version >= GR_GL_VER(3, 0) || |
| ctxInfo.hasExtension("GL_OES_vertex_array_object"); |
| } |
| |
| if (kGLES_GrGLStandard == standard) { |
| if (ctxInfo.hasExtension("GL_EXT_shader_framebuffer_fetch")) { |
| fFBFetchType = kEXT_FBFetchType; |
| } else if (ctxInfo.hasExtension("GL_NV_shader_framebuffer_fetch")) { |
| fFBFetchType = kNV_FBFetchType; |
| } |
| } |
| |
| // Adreno GPUs have a tendency to drop tiles when there is a divide-by-zero in a shader |
| fDropsTileOnZeroDivide = kQualcomm_GrGLVendor == ctxInfo.vendor(); |
| |
| this->initFSAASupport(ctxInfo, gli); |
| this->initStencilFormats(ctxInfo); |
| |
| /************************************************************************** |
| * GrDrawTargetCaps 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; |
| } |
| |
| 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"); |
| } |
| |
| fHWAALineSupport = (kGL_GrGLStandard == standard); |
| |
| 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); |
| |
| fPathRenderingSupport = ctxInfo.hasExtension("GL_NV_path_rendering"); |
| |
| if (fPathRenderingSupport) { |
| if (kGL_GrGLStandard == standard) { |
| // We need one of the two possible texturing methods: using fixed function pipeline |
| // (PathTexGen, texcoords, ...) or using the newer NVPR API additions that support |
| // setting individual fragment inputs with ProgramPathFragmentInputGen. The API |
| // additions are detected by checking the existence of the function. Eventually we may |
| // choose to remove the fixed function codepath. |
| // Set fMaxFixedFunctionTextureCoords = 0 here if you want to force |
| // ProgramPathFragmentInputGen usage on desktop. |
| fPathRenderingSupport = ctxInfo.hasExtension("GL_EXT_direct_state_access") && |
| (fMaxFixedFunctionTextureCoords > 0 || |
| ((ctxInfo.version() >= GR_GL_VER(4,3) || |
| ctxInfo.hasExtension("GL_ARB_program_interface_query")) && |
| NULL != gli->fFunctions.fProgramPathFragmentInputGen)); |
| } else { |
| // Note: path rendering is not yet implemented for GLES. |
| fPathRenderingSupport = ctxInfo.version() >= GR_GL_VER(3,1) && false; |
| } |
| } |
| |
| fGpuTracingSupport = ctxInfo.hasExtension("GL_EXT_debug_marker"); |
| |
| fDstReadInShaderSupport = kNone_FBFetchType != fFBFetchType; |
| |
| // Disable scratch texture reuse on Mali and Adreno devices |
| fReuseScratchTextures = kARM_GrGLVendor != ctxInfo.vendor() && |
| kQualcomm_GrGLVendor != ctxInfo.vendor(); |
| |
| // 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.hasExtension("GL_OES_standard_derivatives"); |
| } |
| |
| 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); |
| } |
| |
| this->initConfigTexturableTable(ctxInfo, gli); |
| this->initConfigRenderableTable(ctxInfo); |
| |
| return true; |
| } |
| |
| 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 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); |
| } |
| |
| // 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)); |
| |
| // 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 |
| if (kGL_GrGLStandard == standard) { |
| fConfigTextureSupport[kR11_EAC_GrPixelConfig] = |
| version >= GR_GL_VER(4, 3) || ctxInfo.hasExtension("GL_ARB_ES3_compatibility"); |
| } else { |
| fConfigTextureSupport[kR11_EAC_GrPixelConfig] = version >= GR_GL_VER(3, 0); |
| } |
| } |
| |
| bool GrGLCaps::readPixelsSupported(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; |
| } |
| |
| 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 = GrGLStencilBuffer::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 GrGLStencilBuffer::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 GrGLStencilBuffer::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* kFBFetchTypeStr[] = { |
| "None", |
| "EXT", |
| "NV", |
| }; |
| GR_STATIC_ASSERT(0 == kNone_FBFetchType); |
| GR_STATIC_ASSERT(1 == kEXT_FBFetchType); |
| GR_STATIC_ASSERT(2 == kNV_FBFetchType); |
| GR_STATIC_ASSERT(SK_ARRAY_COUNT(kFBFetchTypeStr) == kLast_FBFetchType + 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("FB Fetch Type: %s\n", kFBFetchTypeStr[fFBFetchType]); |
| 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); |
| if (!fIsCoreProfile) { |
| r.appendf("Max Fixed Function Texture Coords: %d\n", fMaxFixedFunctionTextureCoords); |
| } |
| 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("Use non-VBO for dynamic data: %s\n", |
| (fUseNonVBOVertexAndIndexDynamicData ? "YES" : "NO")); |
| r.appendf("Full screen clear is free: %s\n", (fFullClearIsFree ? "YES" : "NO")); |
| r.appendf("Drops tile on zero divide: %s\n", (fDropsTileOnZeroDivide ? "YES" : "NO")); |
| return r; |
| } |