void GrGLCaps::initFSAASupport(const GrGLContextInfo& ctxInfo, const GrGLInterface* gli) {
fMSFBOType = kNone_MSFBOType;
if (kDesktop_GrGLBinding != ctxInfo.binding()) {
// 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 (!GR_GL_IGNORE_ES3_MSAA && 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;
}
}
}
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 (kDesktop_GrGLBinding == ctxInfo.binding()) {
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::initFSAASupport(const GrGLContextInfo& ctxInfo) {
fMSFBOType = kNone_MSFBOType;
if (kDesktop_GrGLBinding != ctxInfo.binding()) {
if (ctxInfo.hasExtension("GL_CHROMIUM_framebuffer_multisample")) {
// chrome's extension is equivalent to the EXT msaa
// and fbo_blit extensions.
fMSFBOType = kDesktopEXT_MSFBOType;
} else if (ctxInfo.hasExtension("GL_APPLE_framebuffer_multisample")) {
fMSFBOType = kAppleES_MSFBOType;
}
} else {
if ((ctxInfo.version() >= GR_GL_VER(3,0)) ||
ctxInfo.hasExtension("GL_ARB_framebuffer_object")) {
fMSFBOType = GrGLCaps::kDesktopARB_MSFBOType;
} else if (ctxInfo.hasExtension("GL_EXT_framebuffer_multisample") &&
ctxInfo.hasExtension("GL_EXT_framebuffer_blit")) {
fMSFBOType = GrGLCaps::kDesktopEXT_MSFBOType;
}
// TODO: We could populate fMSAACoverageModes using GetInternalformativ
// on GL 4.2+. It's format-specific, though. See also
// http://code.google.com/p/skia/issues/detail?id=470 about using actual
// rather than requested sample counts in cache key.
if (ctxInfo.hasExtension("GL_NV_framebuffer_multisample_coverage")) {
fCoverageAAType = kNVDesktop_CoverageAAType;
GrGLint count;
GR_GL_GetIntegerv(ctxInfo.interface(),
GR_GL_MAX_MULTISAMPLE_COVERAGE_MODES,
&count);
fMSAACoverageModes.setCount(count);
GR_GL_GetIntegerv(ctxInfo.interface(),
GR_GL_MULTISAMPLE_COVERAGE_MODES,
(int*)&fMSAACoverageModes[0]);
// The NV driver seems to return the modes already sorted but the
// spec doesn't require this. So we sort.
SkQSortCompareProc compareProc =
reinterpret_cast<SkQSortCompareProc>(&coverage_mode_compare);
SkQSort(&fMSAACoverageModes[0],
count,
sizeof(MSAACoverageMode),
compareProc);
}
}
if (kNone_MSFBOType != fMSFBOType) {
GR_GL_GetIntegerv(ctxInfo.interface(),
GR_GL_MAX_SAMPLES,
&fMaxSampleCount);
}
}
void GrGLCaps::initFSAASupport(const GrGLContextInfo& ctxInfo) {
fMSFBOType = kNone_MSFBOType;
if (kDesktop_GrGLBinding != ctxInfo.binding()) {
if (ctxInfo.hasExtension("GL_CHROMIUM_framebuffer_multisample")) {
// chrome's extension is equivalent to the EXT msaa
// and fbo_blit extensions.
fMSFBOType = kDesktopEXT_MSFBOType;
} else if (ctxInfo.hasExtension("GL_APPLE_framebuffer_multisample")) {
fMSFBOType = kAppleES_MSFBOType;
}
} else {
if ((ctxInfo.version() >= GR_GL_VER(3,0)) ||
ctxInfo.hasExtension("GL_ARB_framebuffer_object")) {
fMSFBOType = GrGLCaps::kDesktopARB_MSFBOType;
} else if (ctxInfo.hasExtension("GL_EXT_framebuffer_multisample") &&
ctxInfo.hasExtension("GL_EXT_framebuffer_blit")) {
fMSFBOType = GrGLCaps::kDesktopEXT_MSFBOType;
}
}
}
void GrGLCaps::init(const GrGLContextInfo& ctxInfo) {
this->reset();
if (!ctxInfo.isInitialized()) {
return;
}
const GrGLInterface* gli = ctxInfo.interface();
GrGLBinding binding = ctxInfo.binding();
GrGLVersion version = ctxInfo.version();
if (kES2_GrGLBinding == binding) {
GR_GL_GetIntegerv(gli, GR_GL_MAX_FRAGMENT_UNIFORM_VECTORS,
&fMaxFragmentUniformVectors);
} else {
GrAssert(kDesktop_GrGLBinding == binding);
GrGLint max;
GR_GL_GetIntegerv(gli, GR_GL_MAX_FRAGMENT_UNIFORM_COMPONENTS, &max);
fMaxFragmentUniformVectors = max / 4;
}
if (kDesktop_GrGLBinding == binding) {
fRGBA8RenderbufferSupport = true;
} else {
fRGBA8RenderbufferSupport = ctxInfo.hasExtension("GL_OES_rgb8_rgba8") ||
ctxInfo.hasExtension("GL_ARM_rgba8");
}
if (kDesktop_GrGLBinding == binding) {
fBGRAFormatSupport = version >= GR_GL_VER(1,2) ||
ctxInfo.hasExtension("GL_EXT_bgra");
} else {
bool hasBGRAExt = false;
if (ctxInfo.hasExtension("GL_APPLE_texture_format_BGRA8888")) {
fBGRAFormatSupport = true;
} else if (ctxInfo.hasExtension("GL_EXT_texture_format_BGRA8888")) {
fBGRAFormatSupport = true;
fBGRAIsInternalFormat = true;
}
GrAssert(fBGRAFormatSupport ||
kSkia8888_PM_GrPixelConfig != kBGRA_8888_PM_GrPixelConfig);
}
if (kDesktop_GrGLBinding == binding) {
fTextureSwizzleSupport = version >= GR_GL_VER(3,3) ||
ctxInfo.hasExtension("GL_ARB_texture_swizzle");
} else {
fTextureSwizzleSupport = false;
}
if (kDesktop_GrGLBinding == binding) {
fUnpackRowLengthSupport = true;
fUnpackFlipYSupport = false;
fPackRowLengthSupport = true;
fPackFlipYSupport = false;
} else {
fUnpackRowLengthSupport =ctxInfo.hasExtension("GL_EXT_unpack_subimage");
fUnpackFlipYSupport = ctxInfo.hasExtension("GL_CHROMIUM_flipy");
// no extension for pack row length
fPackRowLengthSupport = false;
fPackFlipYSupport =
ctxInfo.hasExtension("GL_ANGLE_pack_reverse_row_order");
}
fTextureUsageSupport = (kES2_GrGLBinding == binding) &&
ctxInfo.hasExtension("GL_ANGLE_texture_usage");
// Tex storage is in desktop 4.2 and can be an extension to desktop or ES.
fTexStorageSupport = (kDesktop_GrGLBinding == binding &&
version >= GR_GL_VER(4,2)) ||
ctxInfo.hasExtension("GL_ARB_texture_storage") ||
ctxInfo.hasExtension("GL_EXT_texture_storage");
// ARB_texture_rg is part of OpenGL 3.0
if (kDesktop_GrGLBinding == binding) {
fTextureRedSupport = version >= GR_GL_VER(3,0) ||
ctxInfo.hasExtension("GL_ARB_texture_rg");
} else {
fTextureRedSupport = ctxInfo.hasExtension("GL_ARB_texture_rg");
}
this->initFSAASupport(ctxInfo);
this->initStencilFormats(ctxInfo);
}
void GrGLCaps::init(const GrGLContextInfo& ctxInfo) {
this->reset();
if (!ctxInfo.isInitialized()) {
return;
}
const GrGLInterface* gli = ctxInfo.interface();
GrGLBinding binding = ctxInfo.binding();
GrGLVersion version = ctxInfo.version();
if (kES2_GrGLBinding == binding) {
GR_GL_GetIntegerv(gli, GR_GL_MAX_FRAGMENT_UNIFORM_VECTORS,
&fMaxFragmentUniformVectors);
} else {
GrAssert(kDesktop_GrGLBinding == binding);
GrGLint max;
GR_GL_GetIntegerv(gli, GR_GL_MAX_FRAGMENT_UNIFORM_COMPONENTS, &max);
fMaxFragmentUniformVectors = max / 4;
}
GR_GL_GetIntegerv(gli, GR_GL_MAX_VERTEX_ATTRIBS, &fMaxVertexAttributes);
if (kDesktop_GrGLBinding == binding) {
fRGBA8RenderbufferSupport = true;
} else {
fRGBA8RenderbufferSupport = ctxInfo.hasExtension("GL_OES_rgb8_rgba8") ||
ctxInfo.hasExtension("GL_ARM_rgba8");
}
if (kDesktop_GrGLBinding == binding) {
fBGRAFormatSupport = version >= GR_GL_VER(1,2) ||
ctxInfo.hasExtension("GL_EXT_bgra");
} else {
if (ctxInfo.hasExtension("GL_APPLE_texture_format_BGRA8888")) {
fBGRAFormatSupport = true;
} else if (ctxInfo.hasExtension("GL_EXT_texture_format_BGRA8888")) {
fBGRAFormatSupport = true;
fBGRAIsInternalFormat = true;
}
GrAssert(fBGRAFormatSupport ||
kSkia8888_GrPixelConfig != kBGRA_8888_GrPixelConfig);
}
if (kDesktop_GrGLBinding == binding) {
fTextureSwizzleSupport = version >= GR_GL_VER(3,3) ||
ctxInfo.hasExtension("GL_ARB_texture_swizzle");
} else {
fTextureSwizzleSupport = false;
}
if (kDesktop_GrGLBinding == binding) {
fUnpackRowLengthSupport = true;
fUnpackFlipYSupport = false;
fPackRowLengthSupport = true;
fPackFlipYSupport = false;
} else {
fUnpackRowLengthSupport =ctxInfo.hasExtension("GL_EXT_unpack_subimage");
fUnpackFlipYSupport = ctxInfo.hasExtension("GL_CHROMIUM_flipy");
// no extension for pack row length
fPackRowLengthSupport = false;
fPackFlipYSupport =
ctxInfo.hasExtension("GL_ANGLE_pack_reverse_row_order");
}
fTextureUsageSupport = (kES2_GrGLBinding == binding) &&
ctxInfo.hasExtension("GL_ANGLE_texture_usage");
// Tex storage is in desktop 4.2 and can be an extension to desktop or ES.
fTexStorageSupport = (kDesktop_GrGLBinding == binding &&
version >= GR_GL_VER(4,2)) ||
ctxInfo.hasExtension("GL_ARB_texture_storage") ||
ctxInfo.hasExtension("GL_EXT_texture_storage");
// ARB_texture_rg is part of OpenGL 3.0
if (kDesktop_GrGLBinding == binding) {
fTextureRedSupport = version >= GR_GL_VER(3,0) ||
ctxInfo.hasExtension("GL_ARB_texture_rg");
} else {
fTextureRedSupport = ctxInfo.hasExtension("GL_EXT_texture_rg");
}
fImagingSupport = kDesktop_GrGLBinding == binding &&
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 = kES2_GrGLBinding == binding;
// 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");
}
this->initFSAASupport(ctxInfo);
this->initStencilFormats(ctxInfo);
}
void GrGLCaps::init(const GrGLContextInfo& ctxInfo, const GrGLInterface* gli) {
this->reset();
if (!ctxInfo.isInitialized()) {
return;
}
GrGLBinding binding = ctxInfo.binding();
GrGLVersion version = ctxInfo.version();
/**************************************************************************
* Caps specific to GrGLCaps
**************************************************************************/
if (kES2_GrGLBinding == binding) {
GR_GL_GetIntegerv(gli, GR_GL_MAX_FRAGMENT_UNIFORM_VECTORS,
&fMaxFragmentUniformVectors);
} else {
GrAssert(kDesktop_GrGLBinding == binding);
GrGLint max;
GR_GL_GetIntegerv(gli, GR_GL_MAX_FRAGMENT_UNIFORM_COMPONENTS, &max);
fMaxFragmentUniformVectors = max / 4;
}
GR_GL_GetIntegerv(gli, GR_GL_MAX_VERTEX_ATTRIBS, &fMaxVertexAttributes);
if (kDesktop_GrGLBinding == binding) {
fRGBA8RenderbufferSupport = true;
} else {
fRGBA8RenderbufferSupport = ctxInfo.hasExtension("GL_OES_rgb8_rgba8") ||
ctxInfo.hasExtension("GL_ARM_rgba8");
}
if (kDesktop_GrGLBinding == binding) {
fBGRAFormatSupport = version >= GR_GL_VER(1,2) ||
ctxInfo.hasExtension("GL_EXT_bgra");
} else {
if (ctxInfo.hasExtension("GL_APPLE_texture_format_BGRA8888")) {
fBGRAFormatSupport = true;
} else if (ctxInfo.hasExtension("GL_EXT_texture_format_BGRA8888")) {
fBGRAFormatSupport = true;
fBGRAIsInternalFormat = true;
}
GrAssert(fBGRAFormatSupport ||
kSkia8888_GrPixelConfig != kBGRA_8888_GrPixelConfig);
}
if (kDesktop_GrGLBinding == binding) {
fTextureSwizzleSupport = version >= GR_GL_VER(3,3) ||
ctxInfo.hasExtension("GL_ARB_texture_swizzle");
} else {
fTextureSwizzleSupport = false;
}
if (kDesktop_GrGLBinding == binding) {
fUnpackRowLengthSupport = true;
fUnpackFlipYSupport = false;
fPackRowLengthSupport = true;
fPackFlipYSupport = false;
} else {
fUnpackRowLengthSupport =ctxInfo.hasExtension("GL_EXT_unpack_subimage");
fUnpackFlipYSupport = ctxInfo.hasExtension("GL_CHROMIUM_flipy");
// no extension for pack row length
fPackRowLengthSupport = false;
fPackFlipYSupport =
ctxInfo.hasExtension("GL_ANGLE_pack_reverse_row_order");
}
fTextureUsageSupport = (kES2_GrGLBinding == binding) &&
ctxInfo.hasExtension("GL_ANGLE_texture_usage");
// Tex storage is in desktop 4.2 and can be an extension to desktop or ES.
fTexStorageSupport = (kDesktop_GrGLBinding == binding &&
version >= GR_GL_VER(4,2)) ||
ctxInfo.hasExtension("GL_ARB_texture_storage") ||
ctxInfo.hasExtension("GL_EXT_texture_storage");
// ARB_texture_rg is part of OpenGL 3.0
if (kDesktop_GrGLBinding == binding) {
fTextureRedSupport = version >= GR_GL_VER(3,0) ||
ctxInfo.hasExtension("GL_ARB_texture_rg");
} else {
fTextureRedSupport = ctxInfo.hasExtension("GL_EXT_texture_rg");
}
fImagingSupport = kDesktop_GrGLBinding == binding &&
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 = kES2_GrGLBinding == binding;
// 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 (kDesktop_GrGLBinding == binding && 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);
}
fDiscardFBSupport = ctxInfo.hasExtension("GL_EXT_discard_framebuffer");
if (kDesktop_GrGLBinding == binding) {
fVertexArrayObjectSupport = version >= GR_GL_VER(3, 0) ||
ctxInfo.hasExtension("GL_ARB_vertex_array_object");
} else {
fVertexArrayObjectSupport = ctxInfo.hasExtension("GL_OES_vertex_array_object");
}
this->initFSAASupport(ctxInfo, gli);
this->initStencilFormats(ctxInfo);
/**************************************************************************
* GrDrawTargetCaps fields
**************************************************************************/
GrGLint maxTextureUnits;
// check FS and fixed-function texture unit limits
// we only use textures in the fragment stage currently.
// checks are > to make sure we have a spare unit.
GR_GL_GetIntegerv(gli, GR_GL_MAX_TEXTURE_IMAGE_UNITS, &maxTextureUnits);
GrGLint numFormats;
GR_GL_GetIntegerv(gli, GR_GL_NUM_COMPRESSED_TEXTURE_FORMATS, &numFormats);
SkAutoSTMalloc<10, GrGLint> formats(numFormats);
GR_GL_GetIntegerv(gli, GR_GL_COMPRESSED_TEXTURE_FORMATS, formats);
for (int i = 0; i < numFormats; ++i) {
if (formats[i] == GR_GL_PALETTE8_RGBA8) {
f8BitPaletteSupport = true;
break;
}
}
if (kDesktop_GrGLBinding == binding) {
// 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 (kDesktop_GrGLBinding == binding) {
fBufferLockSupport = true; // we require VBO support and the desktop VBO extension includes
// glMapBuffer.
} else {
fBufferLockSupport = ctxInfo.hasExtension("GL_OES_mapbuffer");
}
if (kDesktop_GrGLBinding == binding) {
if (ctxInfo.version() >= GR_GL_VER(2,0) ||
ctxInfo.hasExtension("GL_ARB_texture_non_power_of_two")) {
fNPOTTextureTileSupport = true;
} else {
fNPOTTextureTileSupport = false;
}
} else {
// Unextended ES2 supports NPOT textures with clamp_to_edge and non-mip filters only
fNPOTTextureTileSupport = ctxInfo.hasExtension("GL_OES_texture_npot");
}
fHWAALineSupport = (kDesktop_GrGLBinding == binding);
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 = GrMin(fMaxTextureSize, fMaxRenderTargetSize);
fPathStencilingSupport = GR_GL_USE_NV_PATH_RENDERING &&
ctxInfo.hasExtension("GL_NV_path_rendering");
// Enable supported shader-related caps
if (kDesktop_GrGLBinding == binding) {
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::kImaginationES_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);
}
}
