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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrCaps.h"
#include "GrContextOptions.h"
GrShaderCaps::GrShaderCaps() {
fShaderDerivativeSupport = false;
fGeometryShaderSupport = false;
fPathRenderingSupport = false;
fDstReadInShaderSupport = false;
fDualSourceBlendingSupport = false;
fIntegerSupport = false;
fShaderPrecisionVaries = false;
}
static const char* shader_type_to_string(GrShaderType type) {
switch (type) {
case kVertex_GrShaderType:
return "vertex";
case kGeometry_GrShaderType:
return "geometry";
case kFragment_GrShaderType:
return "fragment";
}
return "";
}
static const char* precision_to_string(GrSLPrecision p) {
switch (p) {
case kLow_GrSLPrecision:
return "low";
case kMedium_GrSLPrecision:
return "medium";
case kHigh_GrSLPrecision:
return "high";
}
return "";
}
SkString GrShaderCaps::dump() const {
SkString r;
static const char* gNY[] = { "NO", "YES" };
r.appendf("Shader Derivative Support : %s\n", gNY[fShaderDerivativeSupport]);
r.appendf("Geometry Shader Support : %s\n", gNY[fGeometryShaderSupport]);
r.appendf("Path Rendering Support : %s\n", gNY[fPathRenderingSupport]);
r.appendf("Dst Read In Shader Support : %s\n", gNY[fDstReadInShaderSupport]);
r.appendf("Dual Source Blending Support : %s\n", gNY[fDualSourceBlendingSupport]);
r.appendf("Integer Support : %s\n", gNY[fIntegerSupport]);
r.appendf("Shader Float Precisions (varies: %s):\n", gNY[fShaderPrecisionVaries]);
for (int s = 0; s < kGrShaderTypeCount; ++s) {
GrShaderType shaderType = static_cast<GrShaderType>(s);
r.appendf("\t%s:\n", shader_type_to_string(shaderType));
for (int p = 0; p < kGrSLPrecisionCount; ++p) {
if (fFloatPrecisions[s][p].supported()) {
GrSLPrecision precision = static_cast<GrSLPrecision>(p);
r.appendf("\t\t%s: log_low: %d log_high: %d bits: %d\n",
precision_to_string(precision),
fFloatPrecisions[s][p].fLogRangeLow,
fFloatPrecisions[s][p].fLogRangeHigh,
fFloatPrecisions[s][p].fBits);
}
}
}
return r;
}
void GrShaderCaps::applyOptionsOverrides(const GrContextOptions& options) {
fDualSourceBlendingSupport = fDualSourceBlendingSupport && !options.fSuppressDualSourceBlending;
this->onApplyOptionsOverrides(options);
}
///////////////////////////////////////////////////////////////////////////////
GrCaps::GrCaps(const GrContextOptions& options) {
fMipMapSupport = false;
fNPOTTextureTileSupport = false;
fSRGBSupport = false;
fTwoSidedStencilSupport = false;
fStencilWrapOpsSupport = false;
fDiscardRenderTargetSupport = false;
fReuseScratchTextures = true;
fReuseScratchBuffers = true;
fGpuTracingSupport = false;
fCompressedTexSubImageSupport = false;
fOversizedStencilSupport = false;
fTextureBarrierSupport = false;
fSampleLocationsSupport = false;
fUsesMixedSamples = false;
fSupportsInstancedDraws = false;
fFullClearIsFree = false;
fMustClearUploadedBufferData = false;
fUseDrawInsteadOfClear = false;
fBlendEquationSupport = kBasic_BlendEquationSupport;
fAdvBlendEqBlacklist = 0;
fMapBufferFlags = kNone_MapFlags;
fMaxRenderTargetSize = 1;
fMaxTextureSize = 1;
fMaxColorSampleCount = 0;
fMaxStencilSampleCount = 0;
fMaxRasterSamples = 0;
fSuppressPrints = options.fSuppressPrints;
fImmediateFlush = options.fImmediateMode;
fDrawPathMasksToCompressedTextureSupport = options.fDrawPathToCompressedTexture;
fGeometryBufferMapThreshold = options.fGeometryBufferMapThreshold;
fUseDrawInsteadOfPartialRenderTargetWrite = options.fUseDrawInsteadOfPartialRenderTargetWrite;
fUseDrawInsteadOfAllRenderTargetWrites = false;
fPreferVRAMUseOverFlushes = true;
}
void GrCaps::applyOptionsOverrides(const GrContextOptions& options) {
fMaxTextureSize = SkTMin(fMaxTextureSize, options.fMaxTextureSizeOverride);
// If the max tile override is zero, it means we should use the max texture size.
if (!options.fMaxTileSizeOverride || options.fMaxTileSizeOverride > fMaxTextureSize) {
fMaxTileSize = fMaxTextureSize;
} else {
fMaxTileSize = options.fMaxTileSizeOverride;
}
this->onApplyOptionsOverrides(options);
}
static SkString map_flags_to_string(uint32_t flags) {
SkString str;
if (GrCaps::kNone_MapFlags == flags) {
str = "none";
} else {
SkASSERT(GrCaps::kCanMap_MapFlag & flags);
SkDEBUGCODE(flags &= ~GrCaps::kCanMap_MapFlag);
str = "can_map";
if (GrCaps::kSubset_MapFlag & flags) {
str.append(" partial");
} else {
str.append(" full");
}
SkDEBUGCODE(flags &= ~GrCaps::kSubset_MapFlag);
}
SkASSERT(0 == flags); // Make sure we handled all the flags.
return str;
}
SkString GrCaps::dump() const {
SkString r;
static const char* gNY[] = {"NO", "YES"};
r.appendf("MIP Map Support : %s\n", gNY[fMipMapSupport]);
r.appendf("NPOT Texture Tile Support : %s\n", gNY[fNPOTTextureTileSupport]);
r.appendf("sRGB Support : %s\n", gNY[fSRGBSupport]);
r.appendf("Two Sided Stencil Support : %s\n", gNY[fTwoSidedStencilSupport]);
r.appendf("Stencil Wrap Ops Support : %s\n", gNY[fStencilWrapOpsSupport]);
r.appendf("Discard Render Target Support : %s\n", gNY[fDiscardRenderTargetSupport]);
r.appendf("Reuse Scratch Textures : %s\n", gNY[fReuseScratchTextures]);
r.appendf("Reuse Scratch Buffers : %s\n", gNY[fReuseScratchBuffers]);
r.appendf("Gpu Tracing Support : %s\n", gNY[fGpuTracingSupport]);
r.appendf("Compressed Update Support : %s\n", gNY[fCompressedTexSubImageSupport]);
r.appendf("Oversized Stencil Support : %s\n", gNY[fOversizedStencilSupport]);
r.appendf("Texture Barrier Support : %s\n", gNY[fTextureBarrierSupport]);
r.appendf("Sample Locations Support : %s\n", gNY[fSampleLocationsSupport]);
r.appendf("Uses Mixed Samples : %s\n", gNY[fUsesMixedSamples]);
r.appendf("Supports instanced draws : %s\n", gNY[fSupportsInstancedDraws]);
r.appendf("Full screen clear is free : %s\n", gNY[fFullClearIsFree]);
r.appendf("Must clear buffer memory : %s\n", gNY[fMustClearUploadedBufferData]);
r.appendf("Draw Instead of Clear [workaround] : %s\n", gNY[fUseDrawInsteadOfClear]);
r.appendf("Draw Instead of TexSubImage [workaround] : %s\n",
gNY[fUseDrawInsteadOfPartialRenderTargetWrite]);
r.appendf("Prefer VRAM Use over flushes [workaround] : %s\n", gNY[fPreferVRAMUseOverFlushes]);
if (this->advancedBlendEquationSupport()) {
r.appendf("Advanced Blend Equation Blacklist : 0x%x\n", fAdvBlendEqBlacklist);
}
r.appendf("Max Texture Size : %d\n", fMaxTextureSize);
r.appendf("Max Render Target Size : %d\n", fMaxRenderTargetSize);
r.appendf("Max Color Sample Count : %d\n", fMaxColorSampleCount);
r.appendf("Max Stencil Sample Count : %d\n", fMaxStencilSampleCount);
r.appendf("Max Raster Samples : %d\n", fMaxRasterSamples);
static const char* kBlendEquationSupportNames[] = {
"Basic",
"Advanced",
"Advanced Coherent",
};
GR_STATIC_ASSERT(0 == kBasic_BlendEquationSupport);
GR_STATIC_ASSERT(1 == kAdvanced_BlendEquationSupport);
GR_STATIC_ASSERT(2 == kAdvancedCoherent_BlendEquationSupport);
GR_STATIC_ASSERT(SK_ARRAY_COUNT(kBlendEquationSupportNames) == kLast_BlendEquationSupport + 1);
r.appendf("Blend Equation Support : %s\n",
kBlendEquationSupportNames[fBlendEquationSupport]);
r.appendf("Map Buffer Support : %s\n",
map_flags_to_string(fMapBufferFlags).c_str());
static const char* kConfigNames[] = {
"Unknown", // kUnknown_GrPixelConfig
"Alpha8", // kAlpha_8_GrPixelConfig,
"Index8", // kIndex_8_GrPixelConfig,
"RGB565", // kRGB_565_GrPixelConfig,
"RGBA444", // kRGBA_4444_GrPixelConfig,
"RGBA8888", // kRGBA_8888_GrPixelConfig,
"BGRA8888", // kBGRA_8888_GrPixelConfig,
"SRGBA8888",// kSRGBA_8888_GrPixelConfig,
"SBGRA8888",// kSBGRA_8888_GrPixelConfig,
"ETC1", // kETC1_GrPixelConfig,
"LATC", // kLATC_GrPixelConfig,
"R11EAC", // kR11_EAC_GrPixelConfig,
"ASTC12x12",// kASTC_12x12_GrPixelConfig,
"RGBAFloat",// kRGBA_float_GrPixelConfig
"AlphaHalf",// kAlpha_half_GrPixelConfig
"RGBAHalf", // kRGBA_half_GrPixelConfig
};
GR_STATIC_ASSERT(0 == kUnknown_GrPixelConfig);
GR_STATIC_ASSERT(1 == kAlpha_8_GrPixelConfig);
GR_STATIC_ASSERT(2 == kIndex_8_GrPixelConfig);
GR_STATIC_ASSERT(3 == kRGB_565_GrPixelConfig);
GR_STATIC_ASSERT(4 == kRGBA_4444_GrPixelConfig);
GR_STATIC_ASSERT(5 == kRGBA_8888_GrPixelConfig);
GR_STATIC_ASSERT(6 == kBGRA_8888_GrPixelConfig);
GR_STATIC_ASSERT(7 == kSRGBA_8888_GrPixelConfig);
GR_STATIC_ASSERT(8 == kSBGRA_8888_GrPixelConfig);
GR_STATIC_ASSERT(9 == kETC1_GrPixelConfig);
GR_STATIC_ASSERT(10 == kLATC_GrPixelConfig);
GR_STATIC_ASSERT(11 == kR11_EAC_GrPixelConfig);
GR_STATIC_ASSERT(12 == kASTC_12x12_GrPixelConfig);
GR_STATIC_ASSERT(13 == kRGBA_float_GrPixelConfig);
GR_STATIC_ASSERT(14 == kAlpha_half_GrPixelConfig);
GR_STATIC_ASSERT(15 == kRGBA_half_GrPixelConfig);
GR_STATIC_ASSERT(SK_ARRAY_COUNT(kConfigNames) == kGrPixelConfigCnt);
SkASSERT(!this->isConfigRenderable(kUnknown_GrPixelConfig, false));
SkASSERT(!this->isConfigRenderable(kUnknown_GrPixelConfig, true));
for (size_t i = 1; i < SK_ARRAY_COUNT(kConfigNames); ++i) {
GrPixelConfig config = static_cast<GrPixelConfig>(i);
r.appendf("%s is renderable: %s, with MSAA: %s\n",
kConfigNames[i],
gNY[this->isConfigRenderable(config, false)],
gNY[this->isConfigRenderable(config, true)]);
}
SkASSERT(!this->isConfigTexturable(kUnknown_GrPixelConfig));
for (size_t i = 1; i < SK_ARRAY_COUNT(kConfigNames); ++i) {
GrPixelConfig config = static_cast<GrPixelConfig>(i);
r.appendf("%s is uploadable to a texture: %s\n",
kConfigNames[i],
gNY[this->isConfigTexturable(config)]);
}
return r;
}
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