* Copyright 2018 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
*** This file was autogenerated from GrRectBlurEffect.fp; do not modify.
**************************************************************************************************/
#include "GrRectBlurEffect.h"
#include "include/gpu/GrTexture.h"
#include "src/gpu/glsl/GrGLSLFragmentProcessor.h"
#include "src/gpu/glsl/GrGLSLFragmentShaderBuilder.h"
#include "src/gpu/glsl/GrGLSLProgramBuilder.h"
#include "src/sksl/SkSLCPP.h"
#include "src/sksl/SkSLUtil.h"
class GrGLSLRectBlurEffect : public GrGLSLFragmentProcessor {
public:
GrGLSLRectBlurEffect() {}
void emitCode(EmitArgs& args) override {
GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
const GrRectBlurEffect& _outer = args.fFp.cast<GrRectBlurEffect>();
(void)_outer;
auto rect = _outer.rect;
(void)rect;
auto sigma = _outer.sigma;
(void)sigma;
highp = ((abs(rect.left()) > 16000.0 || abs(rect.top()) > 16000.0) ||
abs(rect.right()) > 16000.0) ||
abs(rect.bottom()) > 16000.0;
if (highp) {
rectFVar = args.fUniformHandler->addUniform(kFragment_GrShaderFlag, kFloat4_GrSLType,
"rectF");
}
if (!highp) {
rectHVar = args.fUniformHandler->addUniform(kFragment_GrShaderFlag, kHalf4_GrSLType,
"rectH");
}
sigmaVar =
args.fUniformHandler->addUniform(kFragment_GrShaderFlag, kHalf_GrSLType, "sigma");
fragBuilder->codeAppendf(
"/* key */ bool highp = %s;\nhalf invr = 1.0 / (2.0 * %s);\nhalf x;\n@if (highp) "
"{\n float lDiff = %s.x - sk_FragCoord.x;\n float rDiff = sk_FragCoord.x - "
"%s.z;\n x = half(max(lDiff, rDiff) * float(invr));\n} else {\n half lDiff = "
"half(float(%s.x) - sk_FragCoord.x);\n half rDiff = half(sk_FragCoord.x - "
"float(%s.z));\n x = max(lDiff, rDiff) * invr;\n}\nhalf xCoverage;\nif (x > "
"1.5) {\n xCoverage = 0.0;\n} else if (x < -1.5) {\n xCoverage = 1.0;\n} "
"else {\n half x2 = x * x;\n half",
(highp ? "true" : "false"), args.fUniformHandler->getUniformCStr(sigmaVar),
rectFVar.isValid() ? args.fUniformHandler->getUniformCStr(rectFVar) : "float4(0)",
rectFVar.isValid() ? args.fUniformHandler->getUniformCStr(rectFVar) : "float4(0)",
rectHVar.isValid() ? args.fUniformHandler->getUniformCStr(rectHVar) : "half4(0)",
rectHVar.isValid() ? args.fUniformHandler->getUniformCStr(rectHVar) : "half4(0)");
fragBuilder->codeAppendf(
" x3 = x2 * x;\n if (x > 0.5) {\n xCoverage = 0.5625 - ((x3 / 6.0 - (3.0 "
"* x2) * 0.25) + 1.125 * x);\n } else if (x > -0.5) {\n xCoverage = 0.5 "
"- (0.75 * x - x3 / 3.0);\n } else {\n xCoverage = 0.4375 + ((-x3 / 6.0 "
"- (3.0 * x2) * 0.25) - 1.125 * x);\n }\n}\nhalf y;\n@if (highp) {\n float "
"tDiff = %s.y - sk_FragCoord.y;\n float bDiff = sk_FragCoord.y - %s.w;\n y = "
"half(max(tDiff, bDiff) * float(invr));\n} else {\n half tDiff = "
"half(float(%s.y) - sk_FragCoord.y);\n ",
rectFVar.isValid() ? args.fUniformHandler->getUniformCStr(rectFVar) : "float4(0)",
rectFVar.isValid() ? args.fUniformHandler->getUniformCStr(rectFVar) : "float4(0)",
rectHVar.isValid() ? args.fUniformHandler->getUniformCStr(rectHVar) : "half4(0)");
fragBuilder->codeAppendf(
" half bDiff = half(sk_FragCoord.y - float(%s.w));\n y = max(tDiff, bDiff) * "
"invr;\n}\nhalf yCoverage;\nif (y > 1.5) {\n yCoverage = 0.0;\n} else if (y < "
"-1.5) {\n yCoverage = 1.0;\n} else {\n half y2 = y * y;\n half y3 = y2 * "
"y;\n if (y > 0.5) {\n yCoverage = 0.5625 - ((y3 / 6.0 - (3.0 * y2) * "
"0.25) + 1.125 * y);\n } else if (y > -0.5) {\n yCoverage = 0.5 - (0.75 "
"* y - y3 / 3.0);\n } else {\n yCoverage = 0.4375 + ((-y3 / 6.0 - (3.0 * "
"y2) * 0.25) - 1.125 * y);\n ",
rectHVar.isValid() ? args.fUniformHandler->getUniformCStr(rectHVar) : "half4(0)");
fragBuilder->codeAppendf(" }\n}\n%s = (%s * xCoverage) * yCoverage;\n", args.fOutputColor,
args.fInputColor);
}
private:
void onSetData(const GrGLSLProgramDataManager& pdman,
const GrFragmentProcessor& _proc) override {
const GrRectBlurEffect& _outer = _proc.cast<GrRectBlurEffect>();
{ pdman.set1f(sigmaVar, (_outer.sigma)); }
auto rect = _outer.rect;
(void)rect;
UniformHandle& rectF = rectFVar;
(void)rectF;
UniformHandle& rectH = rectHVar;
(void)rectH;
UniformHandle& sigma = sigmaVar;
(void)sigma;
float r[]{rect.fLeft, rect.fTop, rect.fRight, rect.fBottom};
pdman.set4fv(highp ? rectF : rectH, 1, r);
}
bool highp = false;
UniformHandle rectFVar;
UniformHandle rectHVar;
UniformHandle sigmaVar;
};
GrGLSLFragmentProcessor* GrRectBlurEffect::onCreateGLSLInstance() const {
return new GrGLSLRectBlurEffect();
}
void GrRectBlurEffect::onGetGLSLProcessorKey(const GrShaderCaps& caps,
GrProcessorKeyBuilder* b) const {
bool highp = ((abs(rect.left()) > 16000.0 || abs(rect.top()) > 16000.0) ||
abs(rect.right()) > 16000.0) ||
abs(rect.bottom()) > 16000.0;
b->add32((int32_t)highp);
}
bool GrRectBlurEffect::onIsEqual(const GrFragmentProcessor& other) const {
const GrRectBlurEffect& that = other.cast<GrRectBlurEffect>();
(void)that;
if (rect != that.rect) return false;
if (sigma != that.sigma) return false;
return true;
}
GrRectBlurEffect::GrRectBlurEffect(const GrRectBlurEffect& src)
: INHERITED(kGrRectBlurEffect_ClassID, src.optimizationFlags())
, rect(src.rect)
, sigma(src.sigma) {}
std::unique_ptr<GrFragmentProcessor> GrRectBlurEffect::clone() const {
return std::unique_ptr<GrFragmentProcessor>(new GrRectBlurEffect(*this));
}
GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrRectBlurEffect);
#if GR_TEST_UTILS
std::unique_ptr<GrFragmentProcessor> GrRectBlurEffect::TestCreate(GrProcessorTestData* data) {
float sigma = data->fRandom->nextRangeF(3, 8);
float width = data->fRandom->nextRangeF(200, 300);
float height = data->fRandom->nextRangeF(200, 300);
return GrRectBlurEffect::Make(data->proxyProvider(), *data->caps()->shaderCaps(),
SkRect::MakeWH(width, height), sigma);
}
#endif
