Fill vertex routine state for fuzzer.
Bug swiftshader:86
Change-Id: I8339f3882163daa078ac71034aaf37147e51d725
Reviewed-on: https://swiftshader-review.googlesource.com/13349
Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
diff --git a/tests/fuzzers/VertexRoutineFuzzer.cpp b/tests/fuzzers/VertexRoutineFuzzer.cpp
index 986f839..af6dc4b 100644
--- a/tests/fuzzers/VertexRoutineFuzzer.cpp
+++ b/tests/fuzzers/VertexRoutineFuzzer.cpp
@@ -62,68 +62,135 @@
return bytecode;
}
-
private:
sw::VertexShader* bytecode;
};
-// Keep the compiler-related objects between fuzzer runs to speed up the iteration speed.
-std::unique_ptr<ScopedPoolAllocatorAndTLS> allocatorAndTLS;
-std::unique_ptr<sw::VertexShader> bytecodeShader;
-std::unique_ptr<FakeVS> fakeVS;
-std::unique_ptr<TranslatorASM> glslCompiler;
-
} // anonymous namespace
-extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
- if (allocatorAndTLS == nullptr) {
- allocatorAndTLS.reset(new ScopedPoolAllocatorAndTLS);
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
+{
+ std::unique_ptr<ScopedPoolAllocatorAndTLS> allocatorAndTLS(new ScopedPoolAllocatorAndTLS);
+ std::unique_ptr<sw::VertexShader> shader(new sw::VertexShader);
+ std::unique_ptr<FakeVS> fakeVS(new FakeVS(shader.get()));
+
+ std::unique_ptr<TranslatorASM> glslCompiler(new TranslatorASM(fakeVS.get(), GL_VERTEX_SHADER));
+
+ // TODO(cwallez@google.com): have a function to init to default values somewhere
+ ShBuiltInResources resources;
+ resources.MaxVertexAttribs = sw::MAX_VERTEX_INPUTS;
+ resources.MaxVertexUniformVectors = sw::VERTEX_UNIFORM_VECTORS - 3;
+ resources.MaxVaryingVectors = MIN(sw::MAX_VERTEX_OUTPUTS, sw::MAX_VERTEX_INPUTS);
+ resources.MaxVertexTextureImageUnits = sw::VERTEX_TEXTURE_IMAGE_UNITS;
+ resources.MaxCombinedTextureImageUnits = sw::TEXTURE_IMAGE_UNITS + sw::VERTEX_TEXTURE_IMAGE_UNITS;
+ resources.MaxTextureImageUnits = sw::TEXTURE_IMAGE_UNITS;
+ resources.MaxFragmentUniformVectors = sw::FRAGMENT_UNIFORM_VECTORS - 3;
+ resources.MaxDrawBuffers = sw::RENDERTARGETS;
+ resources.MaxVertexOutputVectors = 16; // ???
+ resources.MaxFragmentInputVectors = 15; // ???
+ resources.MinProgramTexelOffset = sw::MIN_PROGRAM_TEXEL_OFFSET;
+ resources.MaxProgramTexelOffset = sw::MAX_PROGRAM_TEXEL_OFFSET;
+ resources.OES_standard_derivatives = 1;
+ resources.OES_fragment_precision_high = 1;
+ resources.OES_EGL_image_external = 1;
+ resources.EXT_draw_buffers = 1;
+ resources.MaxCallStackDepth = 16;
+
+ glslCompiler->Init(resources);
+
+ const char* glslSource = "void main() {gl_Position = vec4(1.0);}";
+
+ if (!glslCompiler->compile(&glslSource, 1, SH_OBJECT_CODE))
+ {
+ return 0;
}
- if (bytecodeShader == nullptr) {
- bytecodeShader.reset(new sw::VertexShader);
- }
-
- if (fakeVS == nullptr) {
- fakeVS.reset(new FakeVS(bytecodeShader.get()));
- }
-
- if (glslCompiler == nullptr) {
- glslCompiler.reset(new TranslatorASM(fakeVS.get(), GL_VERTEX_SHADER));
-
- // TODO(cwallez@google.com): have a function to init to default values somewhere
- ShBuiltInResources resources;
- resources.MaxVertexAttribs = sw::MAX_VERTEX_INPUTS;
- resources.MaxVertexUniformVectors = sw::VERTEX_UNIFORM_VECTORS - 3;
- resources.MaxVaryingVectors = MIN(sw::MAX_VERTEX_OUTPUTS, sw::MAX_VERTEX_INPUTS);
- resources.MaxVertexTextureImageUnits = sw::VERTEX_TEXTURE_IMAGE_UNITS;
- resources.MaxCombinedTextureImageUnits = sw::TEXTURE_IMAGE_UNITS + sw::VERTEX_TEXTURE_IMAGE_UNITS;
- resources.MaxTextureImageUnits = sw::TEXTURE_IMAGE_UNITS;
- resources.MaxFragmentUniformVectors = sw::FRAGMENT_UNIFORM_VECTORS - 3;
- resources.MaxDrawBuffers = sw::RENDERTARGETS;
- resources.MaxVertexOutputVectors = 16; // ???
- resources.MaxFragmentInputVectors = 15; // ???
- resources.MinProgramTexelOffset = sw::MIN_PROGRAM_TEXEL_OFFSET;
- resources.MaxProgramTexelOffset = sw::MAX_PROGRAM_TEXEL_OFFSET;
- resources.OES_standard_derivatives = 1;
- resources.OES_fragment_precision_high = 1;
- resources.OES_EGL_image_external = 1;
- resources.EXT_draw_buffers = 1;
- resources.MaxCallStackDepth = 16;
-
- glslCompiler->Init(resources);
- }
+ std::unique_ptr<sw::VertexShader> bytecodeShader(new sw::VertexShader(fakeVS->getVertexShader()));
sw::VertexProcessor::State state;
- // TODO fill in the state
+ // Data layout:
+ //
+ // byte: boolean states
+ // {
+ // byte: stream type
+ // byte: stream count and normalized
+ // } [MAX_VERTEX_INPUTS]
+ // {
+ // byte[32]: reserved sampler state
+ // } [VERTEX_TEXTURE_IMAGE_UNITS]
- const char* glslSource = "void main() {gl_Position = vec4(1.0);}";
+ const int state_size = 1 + 2 * sw::MAX_VERTEX_INPUTS + 32 * sw::VERTEX_TEXTURE_IMAGE_UNITS;
- if (!glslCompiler->compile(&glslSource, 1, SH_OBJECT_CODE)) {
+ if(size < state_size)
+ {
return 0;
}
+ state.textureSampling = bytecodeShader->containsTextureSampling();
+ state.positionRegister = bytecodeShader->getPositionRegister();
+ state.pointSizeRegister = bytecodeShader->getPointSizeRegister();
+
+ state.preTransformed = (data[0] & 0x01) != 0;
+ state.superSampling = (data[0] & 0x02) != 0;
+ state.multiSampling = (data[0] & 0x04) != 0;
+
+ state.transformFeedbackQueryEnabled = (data[0] & 0x08) != 0;
+ state.transformFeedbackEnabled = (data[0] & 0x10) != 0;
+ state.verticesPerPrimitive = 1 + ((data[0] & 0x20) != 0) + ((data[0] & 0x40) != 0);
+
+ if((data[0] & 0x80) != 0) // Unused/reserved.
+ {
+ return 0;
+ }
+
+ struct Stream
+ {
+ uint8_t count : BITS(sw::STREAMTYPE_LAST);
+ bool normalized;
+ uint8_t reserved : 8 - BITS(sw::STREAMTYPE_LAST) - 1;
+ };
+
+ for(int i = 0; i < sw::MAX_VERTEX_INPUTS; i++)
+ {
+ sw::StreamType type = (sw::StreamType)data[1 + 2 * i + 0];
+ Stream stream = (Stream&)data[1 + 2 * i + 1];
+
+ if(type > sw::STREAMTYPE_LAST) return 0;
+ if(stream.count > 4) return 0;
+ if(stream.reserved != 0) return 0;
+
+ state.input[i].type = type;
+ state.input[i].count = stream.count;
+ state.input[i].normalized = stream.normalized;
+ state.input[i].attribType = bytecodeShader->getAttribType(i);
+ }
+
+ for(unsigned int i = 0; i < sw::VERTEX_TEXTURE_IMAGE_UNITS; i++)
+ {
+ // TODO
+ // if(bytecodeShader->usesSampler(i))
+ // {
+ // state.samplerState[i] = context->sampler[sw::TEXTURE_IMAGE_UNITS + i].samplerState();
+ // }
+
+ for(int j = 0; j < 32; j++)
+ {
+ if(data[1 + 2 * sw::MAX_VERTEX_INPUTS + 32 * i + j] != 0)
+ {
+ return 0;
+ }
+ }
+ }
+
+ for(int i = 0; i < sw::MAX_VERTEX_OUTPUTS; i++)
+ {
+ state.output[i].xWrite = bytecodeShader->getOutput(i, 0).active();
+ state.output[i].yWrite = bytecodeShader->getOutput(i, 1).active();
+ state.output[i].zWrite = bytecodeShader->getOutput(i, 2).active();
+ state.output[i].wWrite = bytecodeShader->getOutput(i, 3).active();
+ }
+
sw::VertexProgram program(state, bytecodeShader.get());
program.generate();
