skia2/tests/sksl/dslfp/GrDSLFPTest_WhileStatement.dsl.cpp
John Stiles 16cbfb41df Implement statements and expressions in DSL C++ code generator.
This CL removes the bulk of the existing C++ code generator, especially
all the complex format-string assembly code. It has been replaced with
actual DSL code generation. Simple IR can now be successfully translated
to a working DSL fragment processor.

This CL also adds a simple test harness which is patterned after the
existing SkSLTest; it renders a pixel, reads it back, and fails the test
if the result isn't solid green (RGBA=0101).

This CL doesn't implement every feature. Some obvious gaps include:
- Sampling from children
- Uniforms/inputs of any kind
- Function calls of any kind

Change-Id: Ib80c23fe1ba4453f7c3cb43b65f93c5ea0deb709
Bug: skia:11854
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/396757
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
2021-04-20 19:28:36 +00:00

66 lines
2.6 KiB
C++

/**************************************************************************************************
*** This file was autogenerated from GrDSLFPTest_WhileStatement.fp; do not modify.
**************************************************************************************************/
/* TODO(skia:11854): DSLCPPCodeGenerator is currently a work in progress. */
#include "GrDSLFPTest_WhileStatement.h"
#include "src/core/SkUtils.h"
#include "src/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"
#include "src/sksl/dsl/priv/DSLFPs.h"
#include "src/sksl/dsl/priv/DSLWriter.h"
#if defined(__clang__)
#pragma clang diagnostic ignored "-Wcomma"
#endif
class GrGLSLDSLFPTest_WhileStatement : public GrGLSLFragmentProcessor {
public:
GrGLSLDSLFPTest_WhileStatement() {}
void emitCode(EmitArgs& args) override {
const GrDSLFPTest_WhileStatement& _outer = args.fFp.cast<GrDSLFPTest_WhileStatement>();
(void) _outer;
using namespace SkSL::dsl;
StartFragmentProcessor(this, &args);
Var color(kNo_Modifier, DSLType(kHalf4_Type), "color", Half4(1.0));
Declare(color);
While(color.x() > 0.5, color.x() -= 0.25);
While(color.w() == 1.0, Block(color.x() -= 0.25, If(color.x() <= 0.0, /*Then:*/ Break())));
While(color.z() > 0.0, Block(color.z() -= 0.25, If(color.w() == 1.0, /*Then:*/ Continue()), color.y() = 0.0));
Return(color);
EndFragmentProcessor();
}
private:
void onSetData(const GrGLSLProgramDataManager& pdman, const GrFragmentProcessor& _proc) override {
}
};
std::unique_ptr<GrGLSLFragmentProcessor> GrDSLFPTest_WhileStatement::onMakeProgramImpl() const {
return std::make_unique<GrGLSLDSLFPTest_WhileStatement>();
}
void GrDSLFPTest_WhileStatement::onGetGLSLProcessorKey(const GrShaderCaps& caps, GrProcessorKeyBuilder* b) const {
}
bool GrDSLFPTest_WhileStatement::onIsEqual(const GrFragmentProcessor& other) const {
const GrDSLFPTest_WhileStatement& that = other.cast<GrDSLFPTest_WhileStatement>();
(void) that;
return true;
}
GrDSLFPTest_WhileStatement::GrDSLFPTest_WhileStatement(const GrDSLFPTest_WhileStatement& src)
: INHERITED(kGrDSLFPTest_WhileStatement_ClassID, src.optimizationFlags()) {
this->cloneAndRegisterAllChildProcessors(src);
}
std::unique_ptr<GrFragmentProcessor> GrDSLFPTest_WhileStatement::clone() const {
return std::make_unique<GrDSLFPTest_WhileStatement>(*this);
}
#if GR_TEST_UTILS
SkString GrDSLFPTest_WhileStatement::onDumpInfo() const {
return SkString();
}
#endif