31e4c38236
Previously we did not have a Pipeline callback function for prototyping a function, so prototypes would be discarded during translation. This failure mode can be seen in http://review.skia.org/454741, where FunctionPrototype.sksl is made more complex (thwarting the inliner). This causes us to emit invalid GLSL, and dm asserts/fails in the SkSL tests: http://screen/4PkEEWn4m4tF5e7 This CL makes the same changes to FunctionPrototype, but does not crash. Change-Id: Ia342c7811a454f62f52677440d247e628a1bdc4f Bug: skia:12488 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/454740 Commit-Queue: Ethan Nicholas <ethannicholas@google.com> Reviewed-by: Ethan Nicholas <ethannicholas@google.com> Auto-Submit: John Stiles <johnstiles@google.com>
69 lines
2.4 KiB
C++
69 lines
2.4 KiB
C++
/*
|
|
* Copyright 2019 Google, LLC
|
|
*
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*/
|
|
|
|
#include "src/gpu/GrShaderCaps.h"
|
|
#include "src/sksl/SkSLCompiler.h"
|
|
#include "src/sksl/codegen/SkSLPipelineStageCodeGenerator.h"
|
|
#include "src/sksl/ir/SkSLVarDeclarations.h"
|
|
#include "src/sksl/ir/SkSLVariable.h"
|
|
|
|
#include "fuzz/Fuzz.h"
|
|
|
|
bool FuzzSKSL2Pipeline(sk_sp<SkData> bytes) {
|
|
sk_sp<GrShaderCaps> caps = SkSL::ShaderCapsFactory::Default();
|
|
SkSL::Compiler compiler(caps.get());
|
|
SkSL::Program::Settings settings;
|
|
std::unique_ptr<SkSL::Program> program = compiler.convertProgram(
|
|
SkSL::ProgramKind::kRuntimeShader,
|
|
SkSL::String((const char*) bytes->data(),
|
|
bytes->size()),
|
|
settings);
|
|
if (!program) {
|
|
return false;
|
|
}
|
|
|
|
class Callbacks : public SkSL::PipelineStage::Callbacks {
|
|
using String = SkSL::String;
|
|
|
|
String declareUniform(const SkSL::VarDeclaration* decl) override {
|
|
return String(decl->var().name());
|
|
}
|
|
|
|
void defineFunction(const char* /*decl*/, const char* /*body*/, bool /*isMain*/) override {}
|
|
void declareFunction(const char* /*decl*/) override {}
|
|
void defineStruct(const char* /*definition*/) override {}
|
|
void declareGlobal(const char* /*declaration*/) override {}
|
|
|
|
String sampleShader(int index, String coords) override {
|
|
return "child_" + SkSL::to_string(index) + ".eval(" + coords + ")";
|
|
}
|
|
|
|
String sampleColorFilter(int index, String color) override {
|
|
return "child_" + SkSL::to_string(index) + ".eval(" + color + ")";
|
|
}
|
|
|
|
String sampleBlender(int index, String src, String dst) override {
|
|
return "child_" + SkSL::to_string(index) + ".eval(" + src + ", " + dst + ")";
|
|
}
|
|
};
|
|
|
|
Callbacks callbacks;
|
|
SkSL::PipelineStage::ConvertProgram(*program, "coords", "inColor", "half4(1)", &callbacks);
|
|
return true;
|
|
}
|
|
|
|
#if defined(SK_BUILD_FOR_LIBFUZZER)
|
|
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
|
|
if (size > 3000) {
|
|
return 0;
|
|
}
|
|
auto bytes = SkData::MakeWithoutCopy(data, size);
|
|
FuzzSKSL2Pipeline(bytes);
|
|
return 0;
|
|
}
|
|
#endif
|