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/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrBitmapTextGeoProc.h"
#include "GrAtlasedShaderHelpers.h"
#include "GrTexture.h"
#include "glsl/GrGLSLFragmentShaderBuilder.h"
#include "glsl/GrGLSLGeometryProcessor.h"
#include "glsl/GrGLSLProgramDataManager.h"
#include "glsl/GrGLSLUniformHandler.h"
#include "glsl/GrGLSLVarying.h"
#include "glsl/GrGLSLVertexGeoBuilder.h"
class GrGLBitmapTextGeoProc : public GrGLSLGeometryProcessor {
public:
GrGLBitmapTextGeoProc() : fColor(GrColor_ILLEGAL), fAtlasSize({0,0}) {}
void onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) override {
const GrBitmapTextGeoProc& btgp = args.fGP.cast<GrBitmapTextGeoProc>();
GrGLSLVertexBuilder* vertBuilder = args.fVertBuilder;
GrGLSLVaryingHandler* varyingHandler = args.fVaryingHandler;
GrGLSLUniformHandler* uniformHandler = args.fUniformHandler;
// emit attributes
varyingHandler->emitAttributes(btgp);
const char* atlasSizeInvName;
fAtlasSizeInvUniform = uniformHandler->addUniform(kVertex_GrShaderFlag,
kFloat2_GrSLType,
kHigh_GrSLPrecision,
"AtlasSizeInv",
&atlasSizeInvName);
GrGLSLVarying uv(kFloat2_GrSLType);
GrSLType texIdxType = args.fShaderCaps->integerSupport() ? kInt_GrSLType : kFloat_GrSLType;
GrGLSLVarying texIdx(texIdxType);
append_index_uv_varyings(args, btgp.inTextureCoords().name(), atlasSizeInvName, &uv,
&texIdx, nullptr);
GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
// Setup pass through color
if (btgp.hasVertexColor()) {
varyingHandler->addPassThroughAttribute(btgp.inColor(), args.fOutputColor);
} else {
this->setupUniformColor(fragBuilder, uniformHandler, args.fOutputColor,
&fColorUniform);
}
// Setup position
gpArgs->fPositionVar = btgp.inPosition().asShaderVar();
// emit transforms
this->emitTransforms(vertBuilder,
varyingHandler,
uniformHandler,
btgp.inPosition().asShaderVar(),
btgp.localMatrix(),
args.fFPCoordTransformHandler);
fragBuilder->codeAppend("half4 texColor;");
append_multitexture_lookup(args, btgp.numTextureSamplers(),
texIdx, uv.fsIn(), "texColor");
if (btgp.maskFormat() == kARGB_GrMaskFormat) {
// modulate by color
fragBuilder->codeAppendf("%s = %s * texColor;", args.fOutputColor, args.fOutputColor);
fragBuilder->codeAppendf("%s = half4(1);", args.fOutputCoverage);
} else {
fragBuilder->codeAppendf("%s = texColor;", args.fOutputCoverage);
}
}
void setData(const GrGLSLProgramDataManager& pdman, const GrPrimitiveProcessor& gp,
FPCoordTransformIter&& transformIter) override {
const GrBitmapTextGeoProc& btgp = gp.cast<GrBitmapTextGeoProc>();
if (btgp.color() != fColor && !btgp.hasVertexColor()) {
float c[4];
GrColorToRGBAFloat(btgp.color(), c);
pdman.set4fv(fColorUniform, 1, c);
fColor = btgp.color();
}
SkASSERT(btgp.numTextureSamplers() >= 1);
GrTexture* atlas = btgp.textureSampler(0).peekTexture();
SkASSERT(atlas && SkIsPow2(atlas->width()) && SkIsPow2(atlas->height()));
if (fAtlasSize.fWidth != atlas->width() || fAtlasSize.fHeight != atlas->height()) {
pdman.set2f(fAtlasSizeInvUniform, 1.0f / atlas->width(), 1.0f / atlas->height());
fAtlasSize.set(atlas->width(), atlas->height());
}
this->setTransformDataHelper(btgp.localMatrix(), pdman, &transformIter);
}
static inline void GenKey(const GrGeometryProcessor& proc,
const GrShaderCaps&,
GrProcessorKeyBuilder* b) {
const GrBitmapTextGeoProc& btgp = proc.cast<GrBitmapTextGeoProc>();
uint32_t key = 0;
key |= btgp.usesW() ? 0x1 : 0x0;
key |= btgp.maskFormat() << 1;
b->add32(key);
b->add32(btgp.numTextureSamplers());
}
private:
GrColor fColor;
UniformHandle fColorUniform;
SkISize fAtlasSize;
UniformHandle fAtlasSizeInvUniform;
typedef GrGLSLGeometryProcessor INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
GrBitmapTextGeoProc::GrBitmapTextGeoProc(GrColor color,
const sk_sp<GrTextureProxy>* proxies,
int numActiveProxies,
const GrSamplerState& params, GrMaskFormat format,
const SkMatrix& localMatrix, bool usesW)
: INHERITED(kGrBitmapTextGeoProc_ClassID)
, fColor(color)
, fLocalMatrix(localMatrix)
, fUsesW(usesW)
, fMaskFormat(format) {
SkASSERT(numActiveProxies <= kMaxTextures);
if (usesW) {
fInPosition = {"inPosition", kFloat3_GrVertexAttribType};
} else {
fInPosition = {"inPosition", kFloat2_GrVertexAttribType};
}
fInTextureCoords = {"inTextureCoords", kUShort2_GrVertexAttribType};
int cnt = 2;
bool hasVertexColor = kA8_GrMaskFormat == fMaskFormat ||
kA565_GrMaskFormat == fMaskFormat;
if (hasVertexColor) {
fInColor = {"inColor", kUByte4_norm_GrVertexAttribType};
++cnt;
}
this->setVertexAttributeCnt(cnt);
for (int i = 0; i < numActiveProxies; ++i) {
SkASSERT(proxies[i]);
fTextureSamplers[i].reset(std::move(proxies[i]), params);
this->addTextureSampler(&fTextureSamplers[i]);
}
}
const GrPrimitiveProcessor::Attribute& GrBitmapTextGeoProc::onVertexAttribute(int i) const {
return IthInitializedAttribute(i, fInPosition, fInColor, fInTextureCoords);
}
void GrBitmapTextGeoProc::addNewProxies(const sk_sp<GrTextureProxy>* proxies,
int numActiveProxies,
const GrSamplerState& params) {
SkASSERT(numActiveProxies <= kMaxTextures);
for (int i = 0; i < numActiveProxies; ++i) {
SkASSERT(proxies[i]);
if (!fTextureSamplers[i].isInitialized()) {
fTextureSamplers[i].reset(std::move(proxies[i]), params);
this->addTextureSampler(&fTextureSamplers[i]);
}
}
}
void GrBitmapTextGeoProc::getGLSLProcessorKey(const GrShaderCaps& caps,
GrProcessorKeyBuilder* b) const {
GrGLBitmapTextGeoProc::GenKey(*this, caps, b);
}
GrGLSLPrimitiveProcessor* GrBitmapTextGeoProc::createGLSLInstance(const GrShaderCaps& caps) const {
return new GrGLBitmapTextGeoProc();
}
///////////////////////////////////////////////////////////////////////////////
GR_DEFINE_GEOMETRY_PROCESSOR_TEST(GrBitmapTextGeoProc);
#if GR_TEST_UTILS
sk_sp<GrGeometryProcessor> GrBitmapTextGeoProc::TestCreate(GrProcessorTestData* d) {
int texIdx = d->fRandom->nextBool() ? GrProcessorUnitTest::kSkiaPMTextureIdx
: GrProcessorUnitTest::kAlphaTextureIdx;
sk_sp<GrTextureProxy> proxies[kMaxTextures] = {
d->textureProxy(texIdx),
nullptr,
nullptr,
nullptr
};
GrSamplerState::WrapMode wrapModes[2];
GrTest::TestWrapModes(d->fRandom, wrapModes);
GrSamplerState samplerState(wrapModes, d->fRandom->nextBool()
? GrSamplerState::Filter::kBilerp
: GrSamplerState::Filter::kNearest);
GrMaskFormat format = kARGB_GrMaskFormat; // init to avoid warning
switch (d->fRandom->nextULessThan(3)) {
case 0:
format = kA8_GrMaskFormat;
break;
case 1:
format = kA565_GrMaskFormat;
break;
case 2:
format = kARGB_GrMaskFormat;
break;
}
return GrBitmapTextGeoProc::Make(GrRandomColor(d->fRandom), proxies, 1, samplerState,
format, GrTest::TestMatrix(d->fRandom),
d->fRandom->nextBool());
}
#endif
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