const GrGLenum* GrGLShaderBuilder::GetTexParamSwizzle(GrPixelConfig config, const GrGLCaps& caps) {
if (caps.textureSwizzleSupport() && GrPixelConfigIsAlphaOnly(config)) {
if (caps.textureRedSupport()) {
static const GrGLenum gRedSmear[] = { GR_GL_RED, GR_GL_RED, GR_GL_RED, GR_GL_RED };
return gRedSmear;
} else {
static const GrGLenum gAlphaSmear[] = { GR_GL_ALPHA, GR_GL_ALPHA,
GR_GL_ALPHA, GR_GL_ALPHA };
return gAlphaSmear;
}
} else {
static const GrGLenum gStraight[] = { GR_GL_RED, GR_GL_GREEN, GR_GL_BLUE, GR_GL_ALPHA };
return gStraight;
}
}
GrTextureAdjuster::GrTextureAdjuster(GrTexture* original, SkAlphaType alphaType,
const SkIRect& contentArea, uint32_t uniqueID,
SkColorSpace* cs)
: INHERITED(contentArea.width(), contentArea.height(),
GrPixelConfigIsAlphaOnly(original->config()))
, fOriginal(original)
, fAlphaType(alphaType)
, fColorSpace(cs)
, fUniqueID(uniqueID)
{
SkASSERT(SkIRect::MakeWH(original->width(), original->height()).contains(contentArea));
if (contentArea.fLeft > 0 || contentArea.fTop > 0 ||
contentArea.fRight < original->width() || contentArea.fBottom < original->height()) {
fContentArea.set(contentArea);
}
}
const GrFragmentProcessor* SkImageShader::asFragmentProcessor(GrContext* context,
const SkMatrix& viewM,
const SkMatrix* localMatrix,
SkFilterQuality filterQuality) const {
SkMatrix matrix;
matrix.setIDiv(fImage->width(), fImage->height());
SkMatrix lmInverse;
if (!this->getLocalMatrix().invert(&lmInverse)) {
return nullptr;
}
if (localMatrix) {
SkMatrix inv;
if (!localMatrix->invert(&inv)) {
return nullptr;
}
lmInverse.postConcat(inv);
}
matrix.preConcat(lmInverse);
SkShader::TileMode tm[] = { fTileModeX, fTileModeY };
// Must set wrap and filter on the sampler before requesting a texture. In two places below
// we check the matrix scale factors to determine how to interpret the filter quality setting.
// This completely ignores the complexity of the drawVertices case where explicit local coords
// are provided by the caller.
bool doBicubic;
GrTextureParams::FilterMode textureFilterMode =
GrSkFilterQualityToGrFilterMode(filterQuality, viewM, this->getLocalMatrix(), &doBicubic);
GrTextureParams params(tm, textureFilterMode);
SkAutoTUnref<GrTexture> texture(as_IB(fImage)->asTextureRef(context, params));
if (!texture) {
return nullptr;
}
SkAutoTUnref<const GrFragmentProcessor> inner;
if (doBicubic) {
inner.reset(GrBicubicEffect::Create(texture, matrix, tm));
} else {
inner.reset(GrSimpleTextureEffect::Create(texture, matrix, params));
}
if (GrPixelConfigIsAlphaOnly(texture->config())) {
return SkRef(inner.get());
}
return GrFragmentProcessor::MulOutputByInputAlpha(inner);
}
std::unique_ptr<GrFragmentProcessor> SkImageShader::asFragmentProcessor(
const GrFPArgs& args) const {
const auto lm = this->totalLocalMatrix(args.fPreLocalMatrix, args.fPostLocalMatrix);
SkMatrix lmInverse;
if (!lm->invert(&lmInverse)) {
return nullptr;
}
GrSamplerState::WrapMode wrapModes[] = {tile_mode_to_wrap_mode(fTileModeX),
tile_mode_to_wrap_mode(fTileModeY)};
// Must set wrap and filter on the sampler before requesting a texture. In two places below
// we check the matrix scale factors to determine how to interpret the filter quality setting.
// This completely ignores the complexity of the drawVertices case where explicit local coords
// are provided by the caller.
bool doBicubic;
GrSamplerState::Filter textureFilterMode = GrSkFilterQualityToGrFilterMode(
args.fFilterQuality, *args.fViewMatrix, *lm,
args.fContext->contextPriv().sharpenMipmappedTextures(), &doBicubic);
GrSamplerState samplerState(wrapModes, textureFilterMode);
sk_sp<SkColorSpace> texColorSpace;
SkScalar scaleAdjust[2] = { 1.0f, 1.0f };
sk_sp<GrTextureProxy> proxy(as_IB(fImage)->asTextureProxyRef(
args.fContext, samplerState, args.fDstColorSpaceInfo->colorSpace(), &texColorSpace,
scaleAdjust));
if (!proxy) {
return nullptr;
}
GrPixelConfig config = proxy->config();
bool isAlphaOnly = GrPixelConfigIsAlphaOnly(config);
lmInverse.postScale(scaleAdjust[0], scaleAdjust[1]);
std::unique_ptr<GrFragmentProcessor> inner;
if (doBicubic) {
inner = GrBicubicEffect::Make(std::move(proxy), lmInverse, wrapModes);
} else {
inner = GrSimpleTextureEffect::Make(std::move(proxy), lmInverse, samplerState);
}
inner = GrColorSpaceXformEffect::Make(std::move(inner), texColorSpace.get(), config,
args.fDstColorSpaceInfo->colorSpace());
if (isAlphaOnly) {
return inner;
}
return GrFragmentProcessor::MulChildByInputAlpha(std::move(inner));
}
GrGLShaderBuilder::DstReadKey GrGLShaderBuilder::KeyForDstRead(const GrTexture* dstCopy,
const GrGLCaps& caps) {
uint32_t key = kYesDstRead_DstReadKeyBit;
if (caps.fbFetchSupport()) {
return key;
}
SkASSERT(NULL != dstCopy);
if (!caps.textureSwizzleSupport() && GrPixelConfigIsAlphaOnly(dstCopy->config())) {
// The fact that the config is alpha-only must be considered when generating code.
key |= kUseAlphaConfig_DstReadKeyBit;
}
if (kTopLeft_GrSurfaceOrigin == dstCopy->origin()) {
key |= kTopLeftOrigin_DstReadKeyBit;
}
SkASSERT(static_cast<DstReadKey>(key) == key);
return static_cast<DstReadKey>(key);
}
void GrTextContext::flushGlyphs() {
if (NULL == fDrawTarget) {
return;
}
GrDrawState* drawState = fDrawTarget->drawState();
if (fCurrVertex > 0) {
// setup our sampler state for our text texture/atlas
drawState->stage(kGlyphMaskStage)->reset();
GrAssert(GrIsALIGN4(fCurrVertex));
GrAssert(fCurrTexture);
GrTextureParams params(SkShader::kRepeat_TileMode, false);
drawState->createTextureEffect(kGlyphMaskStage, fCurrTexture, SkMatrix::I(), params);
if (!GrPixelConfigIsAlphaOnly(fCurrTexture->config())) {
if (kOne_GrBlendCoeff != fPaint.getSrcBlendCoeff() ||
kISA_GrBlendCoeff != fPaint.getDstBlendCoeff() ||
fPaint.hasColorStage()) {
GrPrintf("LCD Text will not draw correctly.\n");
}
// setup blend so that we get mask * paintColor + (1-mask)*dstColor
drawState->setBlendConstant(fPaint.getColor());
drawState->setBlendFunc(kConstC_GrBlendCoeff, kISC_GrBlendCoeff);
// don't modulate by the paint's color in the frag since we're
// already doing it via the blend const.
drawState->setColor(0xffffffff);
} else {
// set back to normal in case we took LCD path previously.
drawState->setBlendFunc(fPaint.getSrcBlendCoeff(), fPaint.getDstBlendCoeff());
drawState->setColor(fPaint.getColor());
}
int nGlyphs = fCurrVertex / 4;
fDrawTarget->setIndexSourceToBuffer(fContext->getQuadIndexBuffer());
fDrawTarget->drawIndexedInstances(kTriangles_GrPrimitiveType,
nGlyphs,
4, 6);
fDrawTarget->resetVertexSource();
fVertices = NULL;
fMaxVertices = 0;
fCurrVertex = 0;
GrSafeSetNull(fCurrTexture);
}
drawState->disableStages();
fDrawTarget = NULL;
}
void GrVkCaps::initGLSLCaps(const VkPhysicalDeviceProperties& properties,
uint32_t featureFlags) {
GrGLSLCaps* glslCaps = static_cast<GrGLSLCaps*>(fShaderCaps.get());
glslCaps->fVersionDeclString = "#version 330\n";
// fConfigOutputSwizzle will default to RGBA so we only need to set it for alpha only config.
for (int i = 0; i < kGrPixelConfigCnt; ++i) {
GrPixelConfig config = static_cast<GrPixelConfig>(i);
if (GrPixelConfigIsAlphaOnly(config)) {
glslCaps->fConfigTextureSwizzle[i] = GrSwizzle::RRRR();
glslCaps->fConfigOutputSwizzle[i] = GrSwizzle::AAAA();
} else {
glslCaps->fConfigTextureSwizzle[i] = GrSwizzle::RGBA();
}
}
// Vulkan is based off ES 3.0 so the following should all be supported
glslCaps->fUsesPrecisionModifiers = true;
glslCaps->fFlatInterpolationSupport = true;
// GrShaderCaps
glslCaps->fShaderDerivativeSupport = true;
glslCaps->fGeometryShaderSupport = SkToBool(featureFlags & kGeometryShader_GrVkFeatureFlag);
glslCaps->fDualSourceBlendingSupport = SkToBool(featureFlags & kDualSrcBlend_GrVkFeatureFlag);
glslCaps->fIntegerSupport = true;
glslCaps->fMaxVertexSamplers =
glslCaps->fMaxGeometrySamplers =
glslCaps->fMaxFragmentSamplers = SkTMin(properties.limits.maxPerStageDescriptorSampledImages,
properties.limits.maxPerStageDescriptorSamplers);
glslCaps->fMaxCombinedSamplers = SkTMin(properties.limits.maxDescriptorSetSampledImages,
properties.limits.maxDescriptorSetSamplers);
}
void GrVkCaps::initGLSLCaps(const VkPhysicalDeviceProperties& properties,
uint32_t featureFlags) {
GrGLSLCaps* glslCaps = static_cast<GrGLSLCaps*>(fShaderCaps.get());
glslCaps->fVersionDeclString = "#version 330\n";
// fConfigOutputSwizzle will default to RGBA so we only need to set it for alpha only config.
for (int i = 0; i < kGrPixelConfigCnt; ++i) {
GrPixelConfig config = static_cast<GrPixelConfig>(i);
if (GrPixelConfigIsAlphaOnly(config)) {
glslCaps->fConfigTextureSwizzle[i] = GrSwizzle::RRRR();
glslCaps->fConfigOutputSwizzle[i] = GrSwizzle::AAAA();
} else {
if (kRGBA_4444_GrPixelConfig == config) {
// The vulkan spec does not require R4G4B4A4 to be supported for texturing so we
// store the data in a B4G4R4A4 texture and then swizzle it when doing texture reads
// or writing to outputs. Since we're not actually changing the data at all, the
// only extra work is the swizzle in the shader for all operations.
glslCaps->fConfigTextureSwizzle[i] = GrSwizzle::BGRA();
glslCaps->fConfigOutputSwizzle[i] = GrSwizzle::BGRA();
} else {
glslCaps->fConfigTextureSwizzle[i] = GrSwizzle::RGBA();
}
}
}
// Vulkan is based off ES 3.0 so the following should all be supported
glslCaps->fUsesPrecisionModifiers = true;
glslCaps->fFlatInterpolationSupport = true;
// GrShaderCaps
glslCaps->fShaderDerivativeSupport = true;
glslCaps->fGeometryShaderSupport = SkToBool(featureFlags & kGeometryShader_GrVkFeatureFlag);
glslCaps->fDualSourceBlendingSupport = SkToBool(featureFlags & kDualSrcBlend_GrVkFeatureFlag);
glslCaps->fIntegerSupport = true;
// Assume the minimum precisions mandated by the SPIR-V spec.
glslCaps->fShaderPrecisionVaries = true;
for (int s = 0; s < kGrShaderTypeCount; ++s) {
auto& highp = glslCaps->fFloatPrecisions[s][kHigh_GrSLPrecision];
highp.fLogRangeLow = highp.fLogRangeHigh = 127;
highp.fBits = 23;
auto& mediump = glslCaps->fFloatPrecisions[s][kMedium_GrSLPrecision];
mediump.fLogRangeLow = mediump.fLogRangeHigh = 14;
mediump.fBits = 10;
glslCaps->fFloatPrecisions[s][kLow_GrSLPrecision] = mediump;
}
glslCaps->initSamplerPrecisionTable();
glslCaps->fMaxVertexSamplers =
glslCaps->fMaxGeometrySamplers =
glslCaps->fMaxFragmentSamplers = SkTMin(SkTMin(properties.limits.maxPerStageDescriptorSampledImages,
properties.limits.maxPerStageDescriptorSamplers),
(uint32_t)INT_MAX);
glslCaps->fMaxCombinedSamplers = SkTMin(SkTMin(properties.limits.maxDescriptorSetSampledImages,
properties.limits.maxDescriptorSetSamplers),
(uint32_t)INT_MAX);
}
bool GrGpuGLFixed::flushGraphicsState(GrPrimitiveType type) {
bool usingTextures[kNumStages];
for (int s = 0; s < kNumStages; ++s) {
usingTextures[s] = VertexUsesStage(s, fGeometrySrc.fVertexLayout);
if (usingTextures[s] && fCurrDrawState.fSamplerStates[s].isGradient()) {
unimpl("Fixed pipe doesn't support radial/sweep gradients");
return false;
}
}
if (GR_GL_SUPPORT_ES1) {
if (BlendCoefReferencesConstant(fCurrDrawState.fSrcBlend) ||
BlendCoefReferencesConstant(fCurrDrawState.fDstBlend)) {
unimpl("ES1 doesn't support blend constant");
return false;
}
}
if (!flushGLStateCommon(type)) {
return false;
}
if (fDirtyFlags.fRenderTargetChanged) {
flushProjectionMatrix();
}
for (int s = 0; s < kNumStages; ++s) {
bool wasUsingTexture = VertexUsesStage(s, fHWGeometryState.fVertexLayout);
if (usingTextures[s] != wasUsingTexture) {
setTextureUnit(s);
if (usingTextures[s]) {
GR_GL(Enable(GR_GL_TEXTURE_2D));
} else {
GR_GL(Disable(GR_GL_TEXTURE_2D));
}
}
}
uint32_t vertColor = (fGeometrySrc.fVertexLayout & kColor_VertexLayoutBit);
uint32_t prevVertColor = (fHWGeometryState.fVertexLayout &
kColor_VertexLayoutBit);
if (vertColor != prevVertColor) {
if (vertColor) {
GR_GL(ShadeModel(GR_GL_SMOOTH));
// invalidate the immediate mode color
fHWDrawState.fColor = GrColor_ILLEGAL;
} else {
GR_GL(ShadeModel(GR_GL_FLAT));
}
}
if (!vertColor && fHWDrawState.fColor != fCurrDrawState.fColor) {
GR_GL(Color4ub(GrColorUnpackR(fCurrDrawState.fColor),
GrColorUnpackG(fCurrDrawState.fColor),
GrColorUnpackB(fCurrDrawState.fColor),
GrColorUnpackA(fCurrDrawState.fColor)));
fHWDrawState.fColor = fCurrDrawState.fColor;
}
// set texture environment, decide whether we are modulating by RGB or A.
for (int s = 0; s < kNumStages; ++s) {
if (usingTextures[s]) {
GrGLTexture* texture = (GrGLTexture*)fCurrDrawState.fTextures[s];
if (NULL != texture) {
TextureEnvRGBOperands nextRGBOperand0 =
(GrPixelConfigIsAlphaOnly(texture->config())) ?
kAlpha_TextureEnvRGBOperand :
kColor_TextureEnvRGBOperand;
if (fHWRGBOperand0[s] != nextRGBOperand0) {
setTextureUnit(s);
GR_GL(TexEnvi(GR_GL_TEXTURE_ENV,
GR_GL_OPERAND0_RGB,
(nextRGBOperand0==kAlpha_TextureEnvRGBOperand) ?
GR_GL_SRC_ALPHA :
GR_GL_SRC_COLOR));
fHWRGBOperand0[s] = nextRGBOperand0;
}
if (((1 << s) & fDirtyFlags.fTextureChangedMask) ||
(fHWDrawState.fSamplerStates[s].getMatrix() !=
getSamplerMatrix(s))) {
GrMatrix texMat = getSamplerMatrix(s);
AdjustTextureMatrix(texture,
GrSamplerState::kNormal_SampleMode,
&texMat);
GrGpuMatrix glm;
glm.set(texMat);
setTextureUnit(s);
GR_GL(MatrixMode(GR_GL_TEXTURE));
GR_GL(LoadMatrixf(glm.fMat));
recordHWSamplerMatrix(s, getSamplerMatrix(s));
}
} else {
GrAssert(!"Rendering with texture vert flag set but no bound texture");
return false;
}
}
}
if (fHWDrawState.fViewMatrix != fCurrDrawState.fViewMatrix) {
GrGpuMatrix glm;
glm.set(fCurrDrawState.fViewMatrix);
GR_GL(MatrixMode(GR_GL_MODELVIEW));
GR_GL(LoadMatrixf(glm.fMat));
fHWDrawState.fViewMatrix =
fCurrDrawState.fViewMatrix;
}
resetDirtyFlags();
return true;
}
static GrTexture* copy_on_gpu(GrTexture* inputTexture, const SkIRect* subset,
const CopyParams& copyParams) {
SkASSERT(!subset || !subset->isEmpty());
GrContext* context = inputTexture->getContext();
SkASSERT(context);
const GrCaps* caps = context->caps();
// Either it's a cache miss or the original wasn't cached to begin with.
GrSurfaceDesc rtDesc = inputTexture->desc();
rtDesc.fFlags = rtDesc.fFlags | kRenderTarget_GrSurfaceFlag;
rtDesc.fWidth = copyParams.fWidth;
rtDesc.fHeight = copyParams.fHeight;
rtDesc.fConfig = GrMakePixelConfigUncompressed(rtDesc.fConfig);
// If the config isn't renderable try converting to either A8 or an 32 bit config. Otherwise,
// fail.
if (!caps->isConfigRenderable(rtDesc.fConfig, false)) {
if (GrPixelConfigIsAlphaOnly(rtDesc.fConfig)) {
if (caps->isConfigRenderable(kAlpha_8_GrPixelConfig, false)) {
rtDesc.fConfig = kAlpha_8_GrPixelConfig;
} else if (caps->isConfigRenderable(kSkia8888_GrPixelConfig, false)) {
rtDesc.fConfig = kSkia8888_GrPixelConfig;
} else {
return nullptr;
}
} else if (kRGB_GrColorComponentFlags ==
(kRGB_GrColorComponentFlags & GrPixelConfigComponentMask(rtDesc.fConfig))) {
if (caps->isConfigRenderable(kSkia8888_GrPixelConfig, false)) {
rtDesc.fConfig = kSkia8888_GrPixelConfig;
} else {
return nullptr;
}
} else {
return nullptr;
}
}
SkAutoTUnref<GrTexture> copy(context->textureProvider()->createTexture(rtDesc,
SkBudgeted::kYes));
if (!copy) {
return nullptr;
}
// TODO: If no scaling is being performed then use copySurface.
GrPaint paint;
paint.setGammaCorrect(true);
// TODO: Initializing these values for no reason cause the compiler is complaining
SkScalar sx = 0.f;
SkScalar sy = 0.f;
if (subset) {
sx = 1.f / inputTexture->width();
sy = 1.f / inputTexture->height();
}
if (copyParams.fFilter != GrTextureParams::kNone_FilterMode && subset &&
(subset->width() != copyParams.fWidth || subset->height() != copyParams.fHeight)) {
SkRect domain;
domain.fLeft = (subset->fLeft + 0.5f) * sx;
domain.fTop = (subset->fTop + 0.5f)* sy;
domain.fRight = (subset->fRight - 0.5f) * sx;
domain.fBottom = (subset->fBottom - 0.5f) * sy;
// This would cause us to read values from outside the subset. Surely, the caller knows
// better!
SkASSERT(copyParams.fFilter != GrTextureParams::kMipMap_FilterMode);
paint.addColorFragmentProcessor(
GrTextureDomainEffect::Make(inputTexture, SkMatrix::I(), domain,
GrTextureDomain::kClamp_Mode,
copyParams.fFilter));
} else {
GrTextureParams params(SkShader::kClamp_TileMode, copyParams.fFilter);
paint.addColorTextureProcessor(inputTexture, SkMatrix::I(), params);
}
paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
SkRect localRect;
if (subset) {
localRect = SkRect::Make(*subset);
localRect.fLeft *= sx;
localRect.fTop *= sy;
localRect.fRight *= sx;
localRect.fBottom *= sy;
} else {
localRect = SkRect::MakeWH(1.f, 1.f);
}
sk_sp<GrDrawContext> drawContext(context->drawContext(sk_ref_sp(copy->asRenderTarget())));
if (!drawContext) {
return nullptr;
}
SkRect dstRect = SkRect::MakeWH(SkIntToScalar(rtDesc.fWidth), SkIntToScalar(rtDesc.fHeight));
drawContext->fillRectToRect(GrNoClip(), paint, SkMatrix::I(), dstRect, localRect);
return copy.release();
}
void GrGpuGLShaders::buildProgram(GrPrimitiveType type) {
// Must initialize all fields or cache will have false negatives!
fCurrentProgram.fProgramDesc.fVertexLayout = fGeometrySrc.fVertexLayout;
fCurrentProgram.fProgramDesc.fOptFlags = 0;
if (kPoints_PrimitiveType != type) {
fCurrentProgram.fProgramDesc.fOptFlags |= GrGLProgram::ProgramDesc::kNotPoints_OptFlagBit;
}
#if GR_AGGRESSIVE_SHADER_OPTS
if (!(fCurrentProgram.fProgramDesc.fVertexLayout & kColor_VertexLayoutBit) &&
(0xffffffff == fCurrDrawState.fColor)) {
fCurrentProgram.fProgramDesc.fOptFlags |= GrGLProgram::ProgramDesc::kVertexColorAllOnes_OptFlagBit;
}
#endif
for (int s = 0; s < kNumStages; ++s) {
GrGLProgram::ProgramDesc::StageDesc& stage = fCurrentProgram.fProgramDesc.fStages[s];
stage.fEnabled = VertexUsesStage(s, fGeometrySrc.fVertexLayout);
if (stage.fEnabled) {
GrGLTexture* texture = (GrGLTexture*) fCurrDrawState.fTextures[s];
GrAssert(NULL != texture);
// we matrix to invert when orientation is TopDown, so make sure
// we aren't in that case before flagging as identity.
if (TextureMatrixIsIdentity(texture, fCurrDrawState.fSamplerStates[s])) {
stage.fOptFlags = GrGLProgram::ProgramDesc::StageDesc::kIdentityMatrix_OptFlagBit;
} else if (!getSamplerMatrix(s).hasPerspective()) {
stage.fOptFlags = GrGLProgram::ProgramDesc::StageDesc::kNoPerspective_OptFlagBit;
} else {
stage.fOptFlags = 0;
}
switch (fCurrDrawState.fSamplerStates[s].getSampleMode()) {
case GrSamplerState::kNormal_SampleMode:
stage.fCoordMapping = GrGLProgram::ProgramDesc::StageDesc::kIdentity_CoordMapping;
break;
case GrSamplerState::kRadial_SampleMode:
stage.fCoordMapping = GrGLProgram::ProgramDesc::StageDesc::kRadialGradient_CoordMapping;
break;
case GrSamplerState::kRadial2_SampleMode:
stage.fCoordMapping = GrGLProgram::ProgramDesc::StageDesc::kRadial2Gradient_CoordMapping;
break;
case GrSamplerState::kSweep_SampleMode:
stage.fCoordMapping = GrGLProgram::ProgramDesc::StageDesc::kSweepGradient_CoordMapping;
break;
default:
GrAssert(!"Unexpected sample mode!");
break;
}
if (GrPixelConfigIsAlphaOnly(texture->config())) {
stage.fModulation = GrGLProgram::ProgramDesc::StageDesc::kAlpha_Modulation;
} else {
stage.fModulation = GrGLProgram::ProgramDesc::StageDesc::kColor_Modulation;
}
if (fCurrDrawState.fEffects[s]) {
fCurrentProgram.fStageEffects[s] = GrGLEffect::Create(fCurrDrawState.fEffects[s]);
} else {
delete fCurrentProgram.fStageEffects[s];
fCurrentProgram.fStageEffects[s] = NULL;
}
} else {
stage.fOptFlags = 0;
stage.fCoordMapping = (GrGLProgram::ProgramDesc::StageDesc::CoordMapping)0;
stage.fModulation = (GrGLProgram::ProgramDesc::StageDesc::Modulation)0;
fCurrentProgram.fStageEffects[s] = NULL;
}
}
}
// creates a new texture that is the input texture scaled up. If optionalKey is valid it will be
// set on the new texture. stretch controls whether the scaling is done using nearest or bilerp
// filtering and the size to stretch the texture to.
GrTexture* stretch_texture(GrTexture* inputTexture, const SkGrStretch& stretch,
SkPixelRef* pixelRef,
const GrUniqueKey& optionalKey) {
SkASSERT(SkGrStretch::kNone_Type != stretch.fType);
GrContext* context = inputTexture->getContext();
SkASSERT(context);
const GrCaps* caps = context->caps();
// Either it's a cache miss or the original wasn't cached to begin with.
GrSurfaceDesc rtDesc = inputTexture->desc();
rtDesc.fFlags = rtDesc.fFlags | kRenderTarget_GrSurfaceFlag;
rtDesc.fWidth = stretch.fWidth;
rtDesc.fHeight = stretch.fHeight;
rtDesc.fConfig = GrMakePixelConfigUncompressed(rtDesc.fConfig);
// If the config isn't renderable try converting to either A8 or an 32 bit config. Otherwise,
// fail.
if (!caps->isConfigRenderable(rtDesc.fConfig, false)) {
if (GrPixelConfigIsAlphaOnly(rtDesc.fConfig)) {
if (caps->isConfigRenderable(kAlpha_8_GrPixelConfig, false)) {
rtDesc.fConfig = kAlpha_8_GrPixelConfig;
} else if (caps->isConfigRenderable(kSkia8888_GrPixelConfig, false)) {
rtDesc.fConfig = kSkia8888_GrPixelConfig;
} else {
return nullptr;
}
} else if (kRGB_GrColorComponentFlags ==
(kRGB_GrColorComponentFlags & GrPixelConfigComponentMask(rtDesc.fConfig))) {
if (caps->isConfigRenderable(kSkia8888_GrPixelConfig, false)) {
rtDesc.fConfig = kSkia8888_GrPixelConfig;
} else {
return nullptr;
}
} else {
return nullptr;
}
}
SkAutoTUnref<GrTexture> stretched(GrCreateTextureForPixels(context, optionalKey, rtDesc,
pixelRef, nullptr,0));
if (!stretched) {
return nullptr;
}
GrPaint paint;
// If filtering is not desired then we want to ensure all texels in the resampled image are
// copies of texels from the original.
GrTextureParams params(SkShader::kClamp_TileMode,
SkGrStretch::kBilerp_Type == stretch.fType ?
GrTextureParams::kBilerp_FilterMode :
GrTextureParams::kNone_FilterMode);
paint.addColorTextureProcessor(inputTexture, SkMatrix::I(), params);
SkRect rect = SkRect::MakeWH(SkIntToScalar(rtDesc.fWidth), SkIntToScalar(rtDesc.fHeight));
SkRect localRect = SkRect::MakeWH(1.f, 1.f);
SkAutoTUnref<GrDrawContext> drawContext(context->drawContext());
if (!drawContext) {
return nullptr;
}
drawContext->drawNonAARectToRect(stretched->asRenderTarget(), GrClip::WideOpen(), paint,
SkMatrix::I(), rect, localRect);
return stretched.detach();
}
void GrGpuGLShaders::buildProgram(GrPrimitiveType type,
BlendOptFlags blendOpts,
GrBlendCoeff dstCoeff,
GrCustomStage** customStages) {
ProgramDesc& desc = fCurrentProgram.fProgramDesc;
const GrDrawState& drawState = this->getDrawState();
// This should already have been caught
GrAssert(!(kSkipDraw_BlendOptFlag & blendOpts));
bool skipCoverage = SkToBool(blendOpts & kEmitTransBlack_BlendOptFlag);
bool skipColor = SkToBool(blendOpts & (kEmitTransBlack_BlendOptFlag |
kEmitCoverage_BlendOptFlag));
// The descriptor is used as a cache key. Thus when a field of the
// descriptor will not affect program generation (because of the vertex
// layout in use or other descriptor field settings) it should be set
// to a canonical value to avoid duplicate programs with different keys.
// Must initialize all fields or cache will have false negatives!
desc.fVertexLayout = this->getVertexLayout();
desc.fEmitsPointSize = kPoints_PrimitiveType == type;
bool requiresAttributeColors =
!skipColor && SkToBool(desc.fVertexLayout & kColor_VertexLayoutBit);
bool requiresAttributeCoverage =
!skipCoverage && SkToBool(desc.fVertexLayout &
kCoverage_VertexLayoutBit);
// fColorInput/fCoverageInput records how colors are specified for the.
// program. So we strip the bits from the layout to avoid false negatives
// when searching for an existing program in the cache.
desc.fVertexLayout &= ~(kColor_VertexLayoutBit | kCoverage_VertexLayoutBit);
desc.fColorFilterXfermode = skipColor ?
SkXfermode::kDst_Mode :
drawState.getColorFilterMode();
desc.fColorMatrixEnabled = drawState.isStateFlagEnabled(GrDrawState::kColorMatrix_StateBit);
// no reason to do edge aa or look at per-vertex coverage if coverage is
// ignored
if (skipCoverage) {
desc.fVertexLayout &= ~(kEdge_VertexLayoutBit |
kCoverage_VertexLayoutBit);
}
bool colorIsTransBlack = SkToBool(blendOpts & kEmitTransBlack_BlendOptFlag);
bool colorIsSolidWhite = (blendOpts & kEmitCoverage_BlendOptFlag) ||
(!requiresAttributeColors &&
0xffffffff == drawState.getColor());
if (GR_AGGRESSIVE_SHADER_OPTS && colorIsTransBlack) {
desc.fColorInput = ProgramDesc::kTransBlack_ColorInput;
} else if (GR_AGGRESSIVE_SHADER_OPTS && colorIsSolidWhite) {
desc.fColorInput = ProgramDesc::kSolidWhite_ColorInput;
} else if (GR_GL_NO_CONSTANT_ATTRIBUTES && !requiresAttributeColors) {
desc.fColorInput = ProgramDesc::kUniform_ColorInput;
} else {
desc.fColorInput = ProgramDesc::kAttribute_ColorInput;
}
bool covIsSolidWhite = !requiresAttributeCoverage &&
0xffffffff == drawState.getCoverage();
if (skipCoverage) {
desc.fCoverageInput = ProgramDesc::kTransBlack_ColorInput;
} else if (covIsSolidWhite) {
desc.fCoverageInput = ProgramDesc::kSolidWhite_ColorInput;
} else if (GR_GL_NO_CONSTANT_ATTRIBUTES && !requiresAttributeCoverage) {
desc.fCoverageInput = ProgramDesc::kUniform_ColorInput;
} else {
desc.fCoverageInput = ProgramDesc::kAttribute_ColorInput;
}
int lastEnabledStage = -1;
if (!skipCoverage && (desc.fVertexLayout &
GrDrawTarget::kEdge_VertexLayoutBit)) {
desc.fVertexEdgeType = drawState.getVertexEdgeType();
} else {
// use canonical value when not set to avoid cache misses
desc.fVertexEdgeType = GrDrawState::kHairLine_EdgeType;
}
for (int s = 0; s < GrDrawState::kNumStages; ++s) {
StageDesc& stage = desc.fStages[s];
stage.fOptFlags = 0;
stage.setEnabled(this->isStageEnabled(s));
bool skip = s < drawState.getFirstCoverageStage() ? skipColor :
skipCoverage;
if (!skip && stage.isEnabled()) {
lastEnabledStage = s;
const GrGLTexture* texture =
static_cast<const GrGLTexture*>(drawState.getTexture(s));
GrAssert(NULL != texture);
const GrSamplerState& sampler = drawState.getSampler(s);
// we matrix to invert when orientation is TopDown, so make sure
// we aren't in that case before flagging as identity.
if (TextureMatrixIsIdentity(texture, sampler)) {
stage.fOptFlags |= StageDesc::kIdentityMatrix_OptFlagBit;
} else if (!sampler.getMatrix().hasPerspective()) {
stage.fOptFlags |= StageDesc::kNoPerspective_OptFlagBit;
}
switch (sampler.getSampleMode()) {
case GrSamplerState::kNormal_SampleMode:
stage.fCoordMapping = StageDesc::kIdentity_CoordMapping;
break;
case GrSamplerState::kRadial_SampleMode:
stage.fCoordMapping = StageDesc::kRadialGradient_CoordMapping;
break;
case GrSamplerState::kRadial2_SampleMode:
if (sampler.radial2IsDegenerate()) {
stage.fCoordMapping =
StageDesc::kRadial2GradientDegenerate_CoordMapping;
} else {
stage.fCoordMapping =
StageDesc::kRadial2Gradient_CoordMapping;
}
break;
case GrSamplerState::kSweep_SampleMode:
stage.fCoordMapping = StageDesc::kSweepGradient_CoordMapping;
break;
default:
GrCrash("Unexpected sample mode!");
break;
}
switch (sampler.getFilter()) {
// these both can use a regular texture2D()
case GrSamplerState::kNearest_Filter:
case GrSamplerState::kBilinear_Filter:
stage.fFetchMode = StageDesc::kSingle_FetchMode;
break;
// performs 4 texture2D()s
case GrSamplerState::k4x4Downsample_Filter:
stage.fFetchMode = StageDesc::k2x2_FetchMode;
break;
// performs fKernelWidth texture2D()s
case GrSamplerState::kConvolution_Filter:
stage.fFetchMode = StageDesc::kConvolution_FetchMode;
break;
case GrSamplerState::kDilate_Filter:
stage.fFetchMode = StageDesc::kDilate_FetchMode;
break;
case GrSamplerState::kErode_Filter:
stage.fFetchMode = StageDesc::kErode_FetchMode;
break;
default:
GrCrash("Unexpected filter!");
break;
}
if (sampler.hasTextureDomain()) {
GrAssert(GrSamplerState::kClamp_WrapMode ==
sampler.getWrapX() &&
GrSamplerState::kClamp_WrapMode ==
sampler.getWrapY());
stage.fOptFlags |= StageDesc::kCustomTextureDomain_OptFlagBit;
}
stage.fInConfigFlags = 0;
if (!this->glCaps().textureSwizzleSupport()) {
if (GrPixelConfigIsAlphaOnly(texture->config())) {
// if we don't have texture swizzle support then
// the shader must smear the single channel after
// reading the texture
if (this->glCaps().textureRedSupport()) {
// we can use R8 textures so use kSmearRed
stage.fInConfigFlags |=
StageDesc::kSmearRed_InConfigFlag;
} else {
// we can use A8 textures so use kSmearAlpha
stage.fInConfigFlags |=
StageDesc::kSmearAlpha_InConfigFlag;
}
} else if (sampler.swapsRAndB()) {
stage.fInConfigFlags |= StageDesc::kSwapRAndB_InConfigFlag;
}
}
if (GrPixelConfigIsUnpremultiplied(texture->config())) {
// The shader generator assumes that color channels are bytes
// when rounding.
GrAssert(4 == GrBytesPerPixel(texture->config()));
if (kUpOnWrite_DownOnRead_UnpremulConversion ==
fUnpremulConversion) {
stage.fInConfigFlags |=
StageDesc::kMulRGBByAlpha_RoundDown_InConfigFlag;
} else {
stage.fInConfigFlags |=
StageDesc::kMulRGBByAlpha_RoundUp_InConfigFlag;
}
}
if (sampler.getFilter() == GrSamplerState::kDilate_Filter ||
sampler.getFilter() == GrSamplerState::kErode_Filter) {
stage.fKernelWidth = sampler.getKernelWidth();
} else {
stage.fKernelWidth = 0;
}
setup_custom_stage(&stage, sampler, customStages,
&fCurrentProgram, s);
} else {
stage.fOptFlags = 0;
stage.fCoordMapping = (StageDesc::CoordMapping) 0;
stage.fInConfigFlags = 0;
stage.fFetchMode = (StageDesc::FetchMode) 0;
stage.fKernelWidth = 0;
stage.fCustomStageKey = 0;
customStages[s] = NULL;
}
}
if (GrPixelConfigIsUnpremultiplied(drawState.getRenderTarget()->config())) {
// The shader generator assumes that color channels are bytes
// when rounding.
GrAssert(4 == GrBytesPerPixel(drawState.getRenderTarget()->config()));
if (kUpOnWrite_DownOnRead_UnpremulConversion == fUnpremulConversion) {
desc.fOutputConfig =
ProgramDesc::kUnpremultiplied_RoundUp_OutputConfig;
} else {
desc.fOutputConfig =
ProgramDesc::kUnpremultiplied_RoundDown_OutputConfig;
}
} else {
desc.fOutputConfig = ProgramDesc::kPremultiplied_OutputConfig;
}
desc.fDualSrcOutput = ProgramDesc::kNone_DualSrcOutput;
// currently the experimental GS will only work with triangle prims
// (and it doesn't do anything other than pass through values from
// the VS to the FS anyway).
#if 0 && GR_GL_EXPERIMENTAL_GS
desc.fExperimentalGS = this->getCaps().fGeometryShaderSupport;
#endif
// we want to avoid generating programs with different "first cov stage"
// values when they would compute the same result.
// We set field in the desc to kNumStages when either there are no
// coverage stages or the distinction between coverage and color is
// immaterial.
int firstCoverageStage = GrDrawState::kNumStages;
desc.fFirstCoverageStage = GrDrawState::kNumStages;
bool hasCoverage = drawState.getFirstCoverageStage() <= lastEnabledStage;
if (hasCoverage) {
firstCoverageStage = drawState.getFirstCoverageStage();
}
// other coverage inputs
if (!hasCoverage) {
hasCoverage =
requiresAttributeCoverage ||
(desc.fVertexLayout & GrDrawTarget::kEdge_VertexLayoutBit);
}
if (hasCoverage) {
// color filter is applied between color/coverage computation
if (SkXfermode::kDst_Mode != desc.fColorFilterXfermode) {
desc.fFirstCoverageStage = firstCoverageStage;
}
if (this->getCaps().fDualSourceBlendingSupport &&
!(blendOpts & (kEmitCoverage_BlendOptFlag |
kCoverageAsAlpha_BlendOptFlag))) {
if (kZero_BlendCoeff == dstCoeff) {
// write the coverage value to second color
desc.fDualSrcOutput = ProgramDesc::kCoverage_DualSrcOutput;
desc.fFirstCoverageStage = firstCoverageStage;
} else if (kSA_BlendCoeff == dstCoeff) {
// SA dst coeff becomes 1-(1-SA)*coverage when dst is partially
// cover
desc.fDualSrcOutput = ProgramDesc::kCoverageISA_DualSrcOutput;
desc.fFirstCoverageStage = firstCoverageStage;
} else if (kSC_BlendCoeff == dstCoeff) {
// SA dst coeff becomes 1-(1-SA)*coverage when dst is partially
// cover
desc.fDualSrcOutput = ProgramDesc::kCoverageISC_DualSrcOutput;
desc.fFirstCoverageStage = firstCoverageStage;
}
}
}
}
void GrVkCaps::initShaderCaps(const VkPhysicalDeviceProperties& properties, uint32_t featureFlags) {
GrShaderCaps* shaderCaps = fShaderCaps.get();
shaderCaps->fVersionDeclString = "#version 330\n";
// fConfigOutputSwizzle will default to RGBA so we only need to set it for alpha only config.
for (int i = 0; i < kGrPixelConfigCnt; ++i) {
GrPixelConfig config = static_cast<GrPixelConfig>(i);
if (GrPixelConfigIsAlphaOnly(config)) {
shaderCaps->fConfigTextureSwizzle[i] = GrSwizzle::RRRR();
shaderCaps->fConfigOutputSwizzle[i] = GrSwizzle::AAAA();
} else {
if (kGray_8_GrPixelConfig == config) {
shaderCaps->fConfigTextureSwizzle[i] = GrSwizzle::RRRA();
} else if (kRGBA_4444_GrPixelConfig == config) {
// The vulkan spec does not require R4G4B4A4 to be supported for texturing so we
// store the data in a B4G4R4A4 texture and then swizzle it when doing texture reads
// or writing to outputs. Since we're not actually changing the data at all, the
// only extra work is the swizzle in the shader for all operations.
shaderCaps->fConfigTextureSwizzle[i] = GrSwizzle::BGRA();
shaderCaps->fConfigOutputSwizzle[i] = GrSwizzle::BGRA();
} else {
shaderCaps->fConfigTextureSwizzle[i] = GrSwizzle::RGBA();
}
}
}
if (kImagination_VkVendor == properties.vendorID) {
shaderCaps->fAtan2ImplementedAsAtanYOverX = true;
}
// Vulkan is based off ES 3.0 so the following should all be supported
shaderCaps->fUsesPrecisionModifiers = true;
shaderCaps->fFlatInterpolationSupport = true;
// GrShaderCaps
shaderCaps->fShaderDerivativeSupport = true;
shaderCaps->fGeometryShaderSupport = SkToBool(featureFlags & kGeometryShader_GrVkFeatureFlag);
shaderCaps->fDualSourceBlendingSupport = SkToBool(featureFlags & kDualSrcBlend_GrVkFeatureFlag);
if (kAMD_VkVendor == properties.vendorID) {
// Currently DualSourceBlending is not working on AMD. vkCreateGraphicsPipeline fails when
// using a draw with dual source. Looking into whether it is driver bug or issue with our
// SPIR-V. Bug skia:6405
shaderCaps->fDualSourceBlendingSupport = false;
}
shaderCaps->fIntegerSupport = true;
shaderCaps->fTexelBufferSupport = true;
shaderCaps->fTexelFetchSupport = true;
shaderCaps->fVertexIDSupport = true;
// Assume the minimum precisions mandated by the SPIR-V spec.
shaderCaps->fShaderPrecisionVaries = true;
for (int s = 0; s < kGrShaderTypeCount; ++s) {
auto& highp = shaderCaps->fFloatPrecisions[s][kHigh_GrSLPrecision];
highp.fLogRangeLow = highp.fLogRangeHigh = 127;
highp.fBits = 23;
auto& mediump = shaderCaps->fFloatPrecisions[s][kMedium_GrSLPrecision];
mediump.fLogRangeLow = mediump.fLogRangeHigh = 14;
mediump.fBits = 10;
shaderCaps->fFloatPrecisions[s][kLow_GrSLPrecision] = mediump;
}
shaderCaps->initSamplerPrecisionTable();
shaderCaps->fMaxVertexSamplers =
shaderCaps->fMaxGeometrySamplers =
shaderCaps->fMaxFragmentSamplers = SkTMin(
SkTMin(properties.limits.maxPerStageDescriptorSampledImages,
properties.limits.maxPerStageDescriptorSamplers),
(uint32_t)INT_MAX);
shaderCaps->fMaxCombinedSamplers = SkTMin(
SkTMin(properties.limits.maxDescriptorSetSampledImages,
properties.limits.maxDescriptorSetSamplers),
(uint32_t)INT_MAX);
}
