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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 "GrBackendSurface.h"
#include "GrContextOptions.h"
#include "GrWindowRectangles.h"
#include "SkJSONWriter.h"
static const char* pixel_config_name(GrPixelConfig config) {
switch (config) {
case kUnknown_GrPixelConfig: return "Unknown";
case kAlpha_8_GrPixelConfig: return "Alpha8";
case kAlpha_8_as_Alpha_GrPixelConfig: return "Alpha8_asAlpha";
case kAlpha_8_as_Red_GrPixelConfig: return "Alpha8_asRed";
case kGray_8_GrPixelConfig: return "Gray8";
case kGray_8_as_Lum_GrPixelConfig: return "Gray8_asLum";
case kGray_8_as_Red_GrPixelConfig: return "Gray8_asRed";
case kRGB_565_GrPixelConfig: return "RGB565";
case kRGBA_4444_GrPixelConfig: return "RGBA444";
case kRGBA_8888_GrPixelConfig: return "RGBA8888";
case kBGRA_8888_GrPixelConfig: return "BGRA8888";
case kSRGBA_8888_GrPixelConfig: return "SRGBA8888";
case kSBGRA_8888_GrPixelConfig: return "SBGRA8888";
case kRGBA_8888_sint_GrPixelConfig: return "RGBA8888_sint";
case kRGBA_float_GrPixelConfig: return "RGBAFloat";
case kRG_float_GrPixelConfig: return "RGFloat";
case kAlpha_half_GrPixelConfig: return "AlphaHalf";
case kAlpha_half_as_Red_GrPixelConfig: return "AlphaHalf_asRed";
case kRGBA_half_GrPixelConfig: return "RGBAHalf";
}
SK_ABORT("Invalid pixel config");
return "<invalid>";
}
GrCaps::GrCaps(const GrContextOptions& options) {
fMipMapSupport = false;
fNPOTTextureTileSupport = false;
fSRGBSupport = false;
fSRGBWriteControl = false;
fSRGBDecodeDisableSupport = false;
fDiscardRenderTargetSupport = false;
fReuseScratchTextures = true;
fReuseScratchBuffers = true;
fGpuTracingSupport = false;
fOversizedStencilSupport = false;
fTextureBarrierSupport = false;
fSampleLocationsSupport = false;
fMultisampleDisableSupport = false;
fInstanceAttribSupport = false;
fUsesMixedSamples = false;
fUsePrimitiveRestart = false;
fPreferClientSideDynamicBuffers = false;
fPreferFullscreenClears = false;
fMustClearUploadedBufferData = false;
fSampleShadingSupport = false;
fFenceSyncSupport = false;
fCrossContextTextureSupport = false;
fBlendEquationSupport = kBasic_BlendEquationSupport;
fAdvBlendEqBlacklist = 0;
fMapBufferFlags = kNone_MapFlags;
fMaxVertexAttributes = 0;
fMaxRenderTargetSize = 1;
fMaxTextureSize = 1;
fMaxRasterSamples = 0;
fMaxWindowRectangles = 0;
// An default count of 4 was chosen because of the common pattern in Blink of:
// isect RR
// diff RR
// isect convex_poly
// isect convex_poly
// when drawing rounded div borders.
fMaxClipAnalyticFPs = 4;
fSuppressPrints = options.fSuppressPrints;
#if GR_TEST_UTILS
fWireframeMode = options.fWireframeMode;
#else
fWireframeMode = false;
#endif
fBufferMapThreshold = options.fBufferMapThreshold;
fBlacklistCoverageCounting = false;
fAvoidStencilBuffers = false;
fPreferVRAMUseOverFlushes = true;
}
void GrCaps::applyOptionsOverrides(const GrContextOptions& options) {
this->onApplyOptionsOverrides(options);
if (options.fDisableDriverCorrectnessWorkarounds) {
SkASSERT(!fBlacklistCoverageCounting);
SkASSERT(!fAvoidStencilBuffers);
SkASSERT(!fAdvBlendEqBlacklist);
}
fMaxTextureSize = SkTMin(fMaxTextureSize, options.fMaxTextureSizeOverride);
fMaxTileSize = fMaxTextureSize;
#if GR_TEST_UTILS
// If the max tile override is zero, it means we should use the max texture size.
if (options.fMaxTileSizeOverride && options.fMaxTileSizeOverride < fMaxTextureSize) {
fMaxTileSize = options.fMaxTileSizeOverride;
}
if (options.fSuppressGeometryShaders) {
fShaderCaps->fGeometryShaderSupport = false;
}
#endif
if (fMaxWindowRectangles > GrWindowRectangles::kMaxWindows) {
SkDebugf("WARNING: capping window rectangles at %i. HW advertises support for %i.\n",
GrWindowRectangles::kMaxWindows, fMaxWindowRectangles);
fMaxWindowRectangles = GrWindowRectangles::kMaxWindows;
}
fAvoidStencilBuffers = options.fAvoidStencilBuffers;
}
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;
}
void GrCaps::dumpJSON(SkJSONWriter* writer) const {
writer->beginObject();
writer->appendBool("MIP Map Support", fMipMapSupport);
writer->appendBool("NPOT Texture Tile Support", fNPOTTextureTileSupport);
writer->appendBool("sRGB Support", fSRGBSupport);
writer->appendBool("sRGB Write Control", fSRGBWriteControl);
writer->appendBool("sRGB Decode Disable", fSRGBDecodeDisableSupport);
writer->appendBool("Discard Render Target Support", fDiscardRenderTargetSupport);
writer->appendBool("Reuse Scratch Textures", fReuseScratchTextures);
writer->appendBool("Reuse Scratch Buffers", fReuseScratchBuffers);
writer->appendBool("Gpu Tracing Support", fGpuTracingSupport);
writer->appendBool("Oversized Stencil Support", fOversizedStencilSupport);
writer->appendBool("Texture Barrier Support", fTextureBarrierSupport);
writer->appendBool("Sample Locations Support", fSampleLocationsSupport);
writer->appendBool("Multisample disable support", fMultisampleDisableSupport);
writer->appendBool("Instance Attrib Support", fInstanceAttribSupport);
writer->appendBool("Uses Mixed Samples", fUsesMixedSamples);
writer->appendBool("Use primitive restart", fUsePrimitiveRestart);
writer->appendBool("Prefer client-side dynamic buffers", fPreferClientSideDynamicBuffers);
writer->appendBool("Prefer fullscreen clears", fPreferFullscreenClears);
writer->appendBool("Must clear buffer memory", fMustClearUploadedBufferData);
writer->appendBool("Sample shading support", fSampleShadingSupport);
writer->appendBool("Fence sync support", fFenceSyncSupport);
writer->appendBool("Cross context texture support", fCrossContextTextureSupport);
writer->appendBool("Blacklist Coverage Counting Path Renderer [workaround]",
fBlacklistCoverageCounting);
writer->appendBool("Prefer VRAM Use over flushes [workaround]", fPreferVRAMUseOverFlushes);
if (this->advancedBlendEquationSupport()) {
writer->appendHexU32("Advanced Blend Equation Blacklist", fAdvBlendEqBlacklist);
}
writer->appendS32("Max Vertex Attributes", fMaxVertexAttributes);
writer->appendS32("Max Texture Size", fMaxTextureSize);
writer->appendS32("Max Render Target Size", fMaxRenderTargetSize);
writer->appendS32("Max Raster Samples", fMaxRasterSamples);
writer->appendS32("Max Window Rectangles", fMaxWindowRectangles);
writer->appendS32("Max Clip Analytic Fragment Processors", fMaxClipAnalyticFPs);
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);
writer->appendString("Blend Equation Support",
kBlendEquationSupportNames[fBlendEquationSupport]);
writer->appendString("Map Buffer Support", map_flags_to_string(fMapBufferFlags).c_str());
SkASSERT(!this->isConfigRenderable(kUnknown_GrPixelConfig, false));
SkASSERT(!this->isConfigRenderable(kUnknown_GrPixelConfig, true));
SkASSERT(!this->isConfigTexturable(kUnknown_GrPixelConfig));
writer->beginArray("configs");
for (size_t i = 1; i < kGrPixelConfigCnt; ++i) {
GrPixelConfig config = static_cast<GrPixelConfig>(i);
writer->beginObject(nullptr, false);
writer->appendString("name", pixel_config_name(config));
writer->appendBool("renderable", this->isConfigRenderable(config, false));
writer->appendBool("renderableMSAA", this->isConfigRenderable(config, true));
writer->appendBool("texturable", this->isConfigTexturable(config));
writer->endObject();
}
writer->endArray();
this->onDumpJSON(writer);
writer->appendName("shaderCaps");
this->shaderCaps()->dumpJSON(writer);
writer->endObject();
}
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