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#include "tools/unit-test/slang-unit-test.h"
#include "slang-gfx.h"
#include "gfx-test-util.h"
#include "tools/gfx-util/shader-cursor.h"
#include "source/core/slang-basic.h"
using namespace gfx;
namespace gfx_test
{
void sharedBufferTestImpl(IDevice* srcDevice, IDevice* dstDevice, UnitTestContext* context)
{
// Create a shareable buffer using srcDevice, get its handle, then create a buffer using the handle using
// dstDevice. Read back the buffer and check that its contents are correct.
const int numberCount = 4;
float initialData[] = { 0.0f, 1.0f, 2.0f, 3.0f };
IBufferResource::Desc bufferDesc = {};
bufferDesc.sizeInBytes = numberCount * sizeof(float);
bufferDesc.format = gfx::Format::Unknown;
bufferDesc.elementSize = sizeof(float);
bufferDesc.allowedStates = ResourceStateSet(
ResourceState::ShaderResource,
ResourceState::UnorderedAccess,
ResourceState::CopyDestination,
ResourceState::CopySource);
bufferDesc.defaultState = ResourceState::UnorderedAccess;
bufferDesc.memoryType = MemoryType::DeviceLocal;
bufferDesc.isShared = true;
ComPtr<IBufferResource> srcBuffer;
GFX_CHECK_CALL_ABORT(srcDevice->createBufferResource(
bufferDesc,
(void*)initialData,
srcBuffer.writeRef()));
InteropHandle sharedHandle;
GFX_CHECK_CALL_ABORT(srcBuffer->getSharedHandle(&sharedHandle));
ComPtr<IBufferResource> dstBuffer;
GFX_CHECK_CALL_ABORT(dstDevice->createBufferFromSharedHandle(sharedHandle, bufferDesc, dstBuffer.writeRef()));
// Reading back the buffer from srcDevice to make sure it's been filled in before reading anything back from dstDevice
// TODO: Implement actual synchronization (and not this hacky solution)
compareComputeResult(srcDevice, srcBuffer, Slang::makeArray<float>(0.0f, 1.0f, 2.0f, 3.0f));
InteropHandle testHandle;
GFX_CHECK_CALL_ABORT(dstBuffer->getNativeResourceHandle(&testHandle));
IBufferResource::Desc* testDesc = dstBuffer->getDesc();
SLANG_CHECK(testDesc->elementSize == sizeof(float));
SLANG_CHECK(testDesc->sizeInBytes == numberCount * sizeof(float));
compareComputeResult(dstDevice, dstBuffer, Slang::makeArray<float>(0.0f, 1.0f, 2.0f, 3.0f));
// Check that dstBuffer can be successfully used in a compute dispatch using dstDevice.
Slang::ComPtr<ITransientResourceHeap> transientHeap;
ITransientResourceHeap::Desc transientHeapDesc = {};
transientHeapDesc.constantBufferSize = 4096;
GFX_CHECK_CALL_ABORT(
dstDevice->createTransientResourceHeap(transientHeapDesc, transientHeap.writeRef()));
ComPtr<IShaderProgram> shaderProgram;
slang::ProgramLayout* slangReflection;
GFX_CHECK_CALL_ABORT(loadComputeProgram(dstDevice, shaderProgram, "compute-trivial", "computeMain", slangReflection));
ComputePipelineStateDesc pipelineDesc = {};
pipelineDesc.program = shaderProgram.get();
ComPtr<gfx::IPipelineState> pipelineState;
GFX_CHECK_CALL_ABORT(
dstDevice->createComputePipelineState(pipelineDesc, pipelineState.writeRef()));
ComPtr<IResourceView> bufferView;
IResourceView::Desc viewDesc = {};
viewDesc.type = IResourceView::Type::UnorderedAccess;
viewDesc.format = Format::Unknown;
GFX_CHECK_CALL_ABORT(
dstDevice->createBufferView(dstBuffer, nullptr, viewDesc, bufferView.writeRef()));
{
ICommandQueue::Desc queueDesc = { ICommandQueue::QueueType::Graphics };
auto queue = dstDevice->createCommandQueue(queueDesc);
auto commandBuffer = transientHeap->createCommandBuffer();
auto encoder = commandBuffer->encodeComputeCommands();
auto rootObject = encoder->bindPipeline(pipelineState);
ShaderCursor rootCursor(rootObject);
// Bind buffer view to the entry point.
rootCursor.getPath("buffer").setResource(bufferView);
encoder->dispatchCompute(1, 1, 1);
encoder->endEncoding();
commandBuffer->close();
queue->executeCommandBuffer(commandBuffer);
queue->waitOnHost();
}
compareComputeResult(
dstDevice,
dstBuffer,
Slang::makeArray<float>(1.0f, 2.0f, 3.0f, 4.0f));
}
void sharedBufferTestAPI(UnitTestContext* context, Slang::RenderApiFlag::Enum srcApi, Slang::RenderApiFlag::Enum dstApi)
{
auto srcDevice = createTestingDevice(context, srcApi);
auto dstDevice = createTestingDevice(context, dstApi);
if (!srcDevice || !dstDevice)
{
SLANG_IGNORE_TEST;
}
sharedBufferTestImpl(srcDevice, dstDevice, context);
}
#if SLANG_WIN64
SLANG_UNIT_TEST(sharedBufferD3D12ToCUDA)
{
sharedBufferTestAPI(unitTestContext, Slang::RenderApiFlag::D3D12, Slang::RenderApiFlag::CUDA);
}
SLANG_UNIT_TEST(sharedBufferVulkanToCUDA)
{
sharedBufferTestAPI(unitTestContext, Slang::RenderApiFlag::Vulkan, Slang::RenderApiFlag::CUDA);
}
#endif
}
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