Remove the legacy GLSL ES vertex shader fuzzer
Chromium no longer runs it now that we're switching to SwANGLE. Note
that ANGLE still has a fuzzer for its GLSL translator.
Bug: swiftshader:86
Change-Id: I581c17b40e4c1f58ebacd089e6f2eff4b53c8751
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/57669
Kokoro-Result: kokoro <noreply+kokoro@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
Commit-Queue: Nicolas Capens <nicolascapens@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>
diff --git a/BUILD.gn b/BUILD.gn
index 3bf24fe..f6d86c9 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -75,20 +75,6 @@
}
}
-source_set("vertex_routine_fuzzer") {
- sources = [ "tests/fuzzers/VertexRoutineFuzzer.cpp" ]
- if (is_win) {
- cflags = [
- "/wd4201", # nameless struct/union
- "/wd4065", # switch statement contains 'default' but no 'case' labels
- "/wd5030", # attribute is not recognized
- ]
- }
- include_dirs = [ "src/" ]
- deps = [ "src/OpenGL/libGLESv2:swiftshader_libGLESv2_static" ]
- configs += [ ":swiftshader_config" ]
-}
-
group("swiftshader") {
data_deps = [
"src/OpenGL/libEGL:swiftshader_libEGL",
diff --git a/tests/fuzzers/VertexRoutineFuzzer.cpp b/tests/fuzzers/VertexRoutineFuzzer.cpp
deleted file mode 100644
index e2d3c35..0000000
--- a/tests/fuzzers/VertexRoutineFuzzer.cpp
+++ /dev/null
@@ -1,244 +0,0 @@
-// Copyright 2017 The SwiftShader Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include "OpenGL/compiler/InitializeGlobals.h"
-#include "OpenGL/compiler/InitializeParseContext.h"
-#include "OpenGL/compiler/TranslatorASM.h"
-
-// TODO: Debug macros of the GLSL compiler clash with core SwiftShader's.
-// They should not be exposed through the interface headers above.
-#undef ASSERT
-#undef UNIMPLEMENTED
-
-#include "Renderer/VertexProcessor.hpp"
-#include "Shader/VertexProgram.hpp"
-
-#include <cassert>
-#include <cstdint>
-#include <memory>
-
-namespace {
-
-// TODO(cwallez@google.com): Like in ANGLE, disable most of the pool allocator for fuzzing
-// This is a helper class to make sure all the resources used by the compiler are initialized
-class ScopedPoolAllocatorAndTLS
-{
-public:
- ScopedPoolAllocatorAndTLS()
- {
- InitializeParseContextIndex();
- InitializePoolIndex();
- SetGlobalPoolAllocator(&allocator);
- }
- ~ScopedPoolAllocatorAndTLS()
- {
- SetGlobalPoolAllocator(nullptr);
- FreePoolIndex();
- FreeParseContextIndex();
- }
-
-private:
- TPoolAllocator allocator;
-};
-
-// Trivial implementation of the glsl::Shader interface that fakes being an API-level
-// shader object.
-class FakeVS : public glsl::Shader
-{
-public:
- FakeVS(sw::VertexShader *bytecode)
- : bytecode(bytecode)
- {
- }
-
- sw::Shader *getShader() const override
- {
- return bytecode;
- }
- sw::VertexShader *getVertexShader() const override
- {
- return bytecode;
- }
-
-private:
- sw::VertexShader *bytecode;
-};
-
-} // anonymous namespace
-
-extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
-{
- // 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]
- //
- // char source[] // null terminated
- const size_t kHeaderSize = 1 + 2 * sw::MAX_VERTEX_INPUTS + 32 * sw::VERTEX_TEXTURE_IMAGE_UNITS;
-
- if(size <= kHeaderSize)
- {
- return 0;
- }
-
- if(data[size - 1] != 0)
- {
- return 0;
- }
-
- 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.OES_EGL_image_external_essl3 = 1;
- resources.EXT_draw_buffers = 1;
- resources.ARB_texture_rectangle = 1;
- resources.MaxCallStackDepth = 16;
-
- glslCompiler->Init(resources);
-
- const char *glslSource = reinterpret_cast<const char *>(data + kHeaderSize);
- if(!glslCompiler->compile(&glslSource, 1, SH_OBJECT_CODE))
- {
- return 0;
- }
-
- std::unique_ptr<sw::VertexShader> bytecodeShader(new sw::VertexShader(fakeVS->getVertexShader()));
-
- sw::VertexProcessor::State state;
-
- 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.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;
- }
-
- constexpr int MAX_ATTRIBUTE_COMPONENTS = 4;
-
- struct Stream
- {
- uint8_t count : BITS(MAX_ATTRIBUTE_COMPONENTS);
- bool normalized : 1;
- uint8_t reserved : 8 - BITS(MAX_ATTRIBUTE_COMPONENTS) - 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 > MAX_ATTRIBUTE_COMPONENTS) 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();
-
- auto routine = program("VertexRoutine");
- assert(routine);
- const void *entry = routine->getEntry();
- assert(entry);
- (void)entry;
-
- return 0;
-}
-
-#if defined(FUZZER_STANDALONE_REPRODUCE)
-int main(int argc, char *argv[])
-{
- FILE *file = fopen("clusterfuzz-testcase", "r");
-
- fseek(file, 0L, SEEK_END);
- long numbytes = ftell(file);
- fseek(file, 0L, SEEK_SET);
- uint8_t *buffer = (uint8_t *)calloc(numbytes, sizeof(uint8_t));
- fread(buffer, sizeof(char), numbytes, file);
- fclose(file);
-
- while(true)
- {
- LLVMFuzzerTestOneInput(buffer, numbytes);
- }
-
- free(buffer);
-
- return 0;
-}
-#endif
