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#include "core/slang-basic.h"
#include "core/slang-blob.h"
#include "gfx-test-util.h"
#include "slang-rhi.h"
#include "slang-rhi/shader-cursor.h"
#include "unit-test/slang-unit-test.h"
using namespace rhi;
namespace gfx_test
{
// In this test,
// we will run a compute shader that compiles to HLSL with a reference to the macro
// "DOWNSTREAM_VALUE" that will be provided to dxc through slang's link-time compiler options. The
// test verifies that `IComponentType2::linkWithOptions()` is able to produce a linked
// IComponentType with additional compiler options. Here we will specify a DownstreamArg compiler
// option to define the value of DOWNSTREAM_VALUE when running dxc.
//
static Slang::Result loadProgram(
rhi::IDevice* device,
Slang::ComPtr<rhi::IShaderProgram>& outShaderProgram,
const char* shaderModuleName,
const char* entryPointName,
slang::ProgramLayout*& slangReflection)
{
Slang::ComPtr<slang::ISession> slangSession;
SLANG_RETURN_ON_FAIL(device->getSlangSession(slangSession.writeRef()));
Slang::ComPtr<slang::IBlob> diagnosticsBlob;
slang::IModule* module = slangSession->loadModule(shaderModuleName, diagnosticsBlob.writeRef());
diagnoseIfNeeded(diagnosticsBlob);
if (!module)
return SLANG_FAIL;
ComPtr<slang::IEntryPoint> computeEntryPoint;
SLANG_RETURN_ON_FAIL(
module->findEntryPointByName(entryPointName, computeEntryPoint.writeRef()));
Slang::List<slang::IComponentType*> componentTypes;
componentTypes.add(module);
componentTypes.add(computeEntryPoint);
Slang::ComPtr<slang::IComponentType> composedProgram;
SlangResult result = slangSession->createCompositeComponentType(
componentTypes.getBuffer(),
componentTypes.getCount(),
composedProgram.writeRef(),
diagnosticsBlob.writeRef());
diagnoseIfNeeded(diagnosticsBlob);
SLANG_RETURN_ON_FAIL(result);
ComPtr<slang::IComponentType> linkedProgram;
slang::CompilerOptionEntry entry;
entry.name = slang::CompilerOptionName::DownstreamArgs;
entry.value.kind = slang::CompilerOptionValueKind::String;
entry.value.stringValue0 = "dxc";
entry.value.stringValue1 = "-DDOWNSTREAM_VALUE=4.0";
result = composedProgram
->linkWithOptions(linkedProgram.writeRef(), 1, &entry, diagnosticsBlob.writeRef());
diagnoseIfNeeded(diagnosticsBlob);
SLANG_RETURN_ON_FAIL(result);
composedProgram = linkedProgram;
slangReflection = composedProgram->getLayout();
ShaderProgramDesc programDesc = {};
programDesc.slangGlobalScope = composedProgram.get();
auto shaderProgram = device->createShaderProgram(programDesc);
outShaderProgram = shaderProgram;
return SLANG_OK;
}
void linkTimeOptionTestImpl(IDevice* device, UnitTestContext* context)
{
ComPtr<IShaderProgram> shaderProgram;
slang::ProgramLayout* slangReflection;
GFX_CHECK_CALL_ABORT(
loadProgram(device, shaderProgram, "link-time-options", "computeMain", slangReflection));
ComputePipelineDesc pipelineDesc = {};
pipelineDesc.program = shaderProgram.get();
ComPtr<IComputePipeline> pipelineState;
GFX_CHECK_CALL_ABORT(device->createComputePipeline(pipelineDesc, pipelineState.writeRef()));
const int numberCount = 4;
float initialData[] = {0.0f, 0.0f, 0.0f, 0.0f};
BufferDesc bufferDesc = {};
bufferDesc.size = numberCount * sizeof(float);
bufferDesc.format = rhi::Format::Undefined;
bufferDesc.elementSize = sizeof(float);
bufferDesc.usage = BufferUsage::ShaderResource | BufferUsage::UnorderedAccess |
BufferUsage::CopyDestination | BufferUsage::CopySource;
bufferDesc.defaultState = ResourceState::UnorderedAccess;
bufferDesc.memoryType = MemoryType::DeviceLocal;
ComPtr<IBuffer> numbersBuffer;
GFX_CHECK_CALL_ABORT(
device->createBuffer(bufferDesc, (void*)initialData, numbersBuffer.writeRef()));
// We have done all the set up work, now it is time to start recording a command buffer for
// GPU execution.
{
auto queue = device->getQueue(QueueType::Graphics);
auto commandEncoder = queue->createCommandEncoder();
auto computePassEncoder = commandEncoder->beginComputePass();
auto rootObject = computePassEncoder->bindPipeline(pipelineState);
ShaderCursor entryPointCursor(
rootObject->getEntryPoint(0)); // get a cursor the the first entry-point.
// Bind buffer to the entry point.
entryPointCursor.getPath("buffer").setBinding(Binding(numbersBuffer));
computePassEncoder->dispatchCompute(1, 1, 1);
computePassEncoder->end();
auto commandBuffer = commandEncoder->finish();
queue->submit(commandBuffer);
queue->waitOnHost();
}
compareComputeResult(device, numbersBuffer, std::array{4.0f});
}
SLANG_UNIT_TEST(linkTimeOptionD3D12)
{
runTestImpl(linkTimeOptionTestImpl, unitTestContext, DeviceType::D3D12);
}
} // namespace gfx_test
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