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render-test-main.cpp
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// render-test-main.cpp
#define _CRT_SECURE_NO_WARNINGS 1
#include "../../source/core/slang-test-tool-util.h"
#include "../source/core/slang-io.h"
#include "../source/core/slang-string-util.h"
#include "core/slang-token-reader.h"
#include "options.h"
#include "png-serialize-util.h"
#include "shader-input-layout.h"
#include "shader-renderer-util.h"
#include "slang-support.h"
#include "window.h"
#if defined(_WIN32)
#include <d3d12.h>
#endif
#include <slang-rhi.h>
#include <slang-rhi/acceleration-structure-utils.h>
#include <slang-rhi/shader-cursor.h>
#include <stdio.h>
#include <stdlib.h>
#define ENABLE_RENDERDOC_INTEGRATION 0
#if ENABLE_RENDERDOC_INTEGRATION
#include "external/renderdoc_app.h"
#include <windows.h>
#endif
namespace renderer_test
{
using Slang::Result;
int gWindowWidth = 1024;
int gWindowHeight = 768;
//
// For the purposes of a small example, we will define the vertex data for a
// single triangle directly in the source file. It should be easy to extend
// this example to load data from an external source, if desired.
//
struct Vertex
{
float position[3];
float color[3];
float uv[2];
float customData0[4];
float customData1[4];
float customData2[4];
float customData3[4];
};
static const Vertex kVertexData[] = {
{{0, 0, 0.5}, {1, 0, 0}, {0, 0}, {1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}, {13, 14, 15, 16}},
{{0, 1, 0.5}, {0, 0, 1}, {1, 0}, {1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}, {13, 14, 15, 16}},
{{1, 0, 0.5}, {0, 1, 0}, {1, 1}, {1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}, {13, 14, 15, 16}},
};
static const int kVertexCount = SLANG_COUNT_OF(kVertexData);
using namespace Slang;
static void _outputProfileTime(uint64_t startTicks, uint64_t endTicks)
{
WriterHelper out = StdWriters::getOut();
double time = double(endTicks - startTicks) / Process::getClockFrequency();
out.print("profile-time=%g\n", time);
}
class ProgramVars;
struct ShaderOutputPlan
{
struct Item
{
ComPtr<IResource> resource;
slang::TypeLayoutReflection* typeLayout = nullptr;
};
List<Item> items;
};
// A context for hodling resources allocated for a test.
struct TestResourceContext
{
List<ComPtr<IResource>> resources;
};
class RenderTestApp
{
public:
Result update();
// At initialization time, we are going to load and compile our Slang shader
// code, and then create the API objects we need for rendering.
Result initialize(
SlangSession* session,
IDevice* device,
const Options& options,
const ShaderCompilerUtil::Input& input);
void finalize();
Result applyBinding(IShaderObject* rootObject);
void setProjectionMatrix(IShaderObject* rootObject);
Result writeBindingOutput(const String& fileName);
Result writeScreen(const String& filename);
protected:
/// Called in initialize
Result _initializeShaders(
SlangSession* session,
IDevice* device,
Options::ShaderProgramType shaderType,
const ShaderCompilerUtil::Input& input);
void _initializeRenderPass();
void _initializeAccelerationStructure();
uint64_t m_startTicks;
// variables for state to be used for rendering...
uintptr_t m_constantBufferSize;
IDevice* m_device;
ComPtr<ICommandQueue> m_queue;
ComPtr<IInputLayout> m_inputLayout;
ComPtr<IBuffer> m_vertexBuffer;
ComPtr<IShaderProgram> m_shaderProgram;
ComPtr<IPipeline> m_pipeline;
ComPtr<ITexture> m_depthBuffer;
ComPtr<ITextureView> m_depthBufferView;
ComPtr<ITexture> m_colorBuffer;
ComPtr<ITextureView> m_colorBufferView;
ComPtr<IBuffer> m_blasBuffer;
ComPtr<IAccelerationStructure> m_bottomLevelAccelerationStructure;
ComPtr<IBuffer> m_tlasBuffer;
ComPtr<IAccelerationStructure> m_topLevelAccelerationStructure;
ShaderCompilerUtil::OutputAndLayout m_compilationOutput;
ShaderInputLayout m_shaderInputLayout; ///< The binding layout
Options m_options;
ShaderOutputPlan m_outputPlan;
TestResourceContext m_resourceContext;
};
struct AssignValsFromLayoutContext
{
IDevice* device;
slang::IComponentType* slangComponent;
ShaderOutputPlan& outputPlan;
TestResourceContext& resourceContext;
IAccelerationStructure* accelerationStructure;
AssignValsFromLayoutContext(
IDevice* device,
slang::IComponentType* slangComponent,
ShaderOutputPlan& outputPlan,
TestResourceContext& resourceContext,
IAccelerationStructure* accelerationStructure)
: device(device)
, slangComponent(slangComponent)
, outputPlan(outputPlan)
, resourceContext(resourceContext)
, accelerationStructure(accelerationStructure)
{
}
slang::ProgramLayout* slangReflection() { return slangComponent->getLayout(); }
slang::ISession* slangSession() { return slangComponent->getSession(); }
void maybeAddOutput(
ShaderCursor const& dstCursor,
ShaderInputLayout::Val* srcVal,
IResource* resource)
{
if (srcVal->isOutput)
{
ShaderOutputPlan::Item item;
item.resource = resource;
item.typeLayout = dstCursor.getTypeLayout();
outputPlan.items.add(item);
}
}
SlangResult assignData(ShaderCursor const& dstCursor, ShaderInputLayout::DataVal* srcVal)
{
const size_t bufferSize = srcVal->bufferData.getCount() * sizeof(uint32_t);
ShaderCursor dataCursor = dstCursor;
switch (dataCursor.getTypeLayout()->getKind())
{
case slang::TypeReflection::Kind::ConstantBuffer:
case slang::TypeReflection::Kind::ParameterBlock:
dataCursor = dataCursor.getDereferenced();
break;
default:
break;
}
SLANG_RETURN_ON_FAIL(dataCursor.setData(srcVal->bufferData.getBuffer(), bufferSize));
return SLANG_OK;
}
SlangResult assignBuffer(ShaderCursor const& dstCursor, ShaderInputLayout::BufferVal* srcVal)
{
const InputBufferDesc& srcBuffer = srcVal->bufferDesc;
auto& bufferData = srcVal->bufferData;
const size_t bufferSize = Math::Max(
(size_t)bufferData.getCount() * sizeof(uint32_t),
(size_t)(srcBuffer.elementCount * srcBuffer.stride));
bufferData.reserve(bufferSize / sizeof(uint32_t));
for (size_t i = bufferData.getCount(); i < bufferSize / sizeof(uint32_t); i++)
bufferData.add(0);
ComPtr<IBuffer> bufferResource;
SLANG_RETURN_ON_FAIL(ShaderRendererUtil::createBuffer(
srcBuffer,
/*entry.isOutput,*/ bufferSize,
bufferData.getBuffer(),
device,
bufferResource));
if ((dstCursor.getTypeLayout()->getType()->getKind() ==
slang::TypeReflection::Kind::Scalar &&
dstCursor.getTypeLayout()->getType()->getScalarType() ==
slang::TypeReflection::ScalarType::UInt64) ||
dstCursor.getTypeLayout()->getType()->getKind() == slang::TypeReflection::Kind::Pointer)
{
// dstCursor is pointer to an ordinary uniform data field,
// we should write bufferResource as a pointer.
uint64_t addr = bufferResource->getDeviceAddress();
dstCursor.setData(&addr, sizeof(addr));
resourceContext.resources.add(ComPtr<IResource>(bufferResource.get()));
maybeAddOutput(dstCursor, srcVal, bufferResource);
return SLANG_OK;
}
ComPtr<IBuffer> counterResource;
const auto explicitCounterCursor = dstCursor.getExplicitCounter();
if (srcBuffer.counter != ~0u)
{
if (explicitCounterCursor.isValid())
{
// If this cursor has a full buffer object associated with the
// resource, then assign to that.
ShaderInputLayout::BufferVal counterVal;
counterVal.bufferData.add(srcBuffer.counter);
assignBuffer(explicitCounterCursor, &counterVal);
}
else
{
// Otherwise, this API (D3D) must be handling the buffer object
// specially, in which case create the buffer resource to pass
// into `createBufferView`
const InputBufferDesc& counterBufferDesc{
InputBufferType::StorageBuffer,
sizeof(uint32_t),
1,
Format::Unknown,
};
SLANG_RETURN_ON_FAIL(ShaderRendererUtil::createBuffer(
counterBufferDesc,
sizeof(srcBuffer.counter),
&srcBuffer.counter,
device,
counterResource));
}
}
else if (explicitCounterCursor.isValid())
{
// If we know we require a counter for this resource but haven't
// been given one, error
return SLANG_E_INVALID_ARG;
}
if (counterResource)
{
dstCursor.setBinding(Binding(bufferResource, counterResource));
}
else
{
dstCursor.setBinding(bufferResource);
}
maybeAddOutput(dstCursor, srcVal, bufferResource);
return SLANG_OK;
}
SlangResult assignCombinedTextureSampler(
ShaderCursor const& dstCursor,
ShaderInputLayout::CombinedTextureSamplerVal* srcVal)
{
auto& textureEntry = srcVal->textureVal;
auto& samplerEntry = srcVal->samplerVal;
ComPtr<ITexture> texture;
SLANG_RETURN_ON_FAIL(ShaderRendererUtil::generateTexture(
textureEntry->textureDesc,
ResourceState::ShaderResource,
device,
texture));
auto sampler = _createSampler(device, samplerEntry->samplerDesc);
dstCursor.setBinding(Binding(texture, sampler));
maybeAddOutput(dstCursor, srcVal, texture);
return SLANG_OK;
}
SlangResult assignTexture(ShaderCursor const& dstCursor, ShaderInputLayout::TextureVal* srcVal)
{
ComPtr<ITexture> texture;
ResourceState defaultState = srcVal->textureDesc.isRWTexture
? ResourceState::UnorderedAccess
: ResourceState::ShaderResource;
SLANG_RETURN_ON_FAIL(ShaderRendererUtil::generateTexture(
srcVal->textureDesc,
defaultState,
device,
texture));
dstCursor.setBinding(texture);
maybeAddOutput(dstCursor, srcVal, texture);
return SLANG_OK;
}
SlangResult assignSampler(ShaderCursor const& dstCursor, ShaderInputLayout::SamplerVal* srcVal)
{
auto sampler = _createSampler(device, srcVal->samplerDesc);
dstCursor.setBinding(sampler);
return SLANG_OK;
}
SlangResult assignAggregate(ShaderCursor const& dstCursor, ShaderInputLayout::AggVal* srcVal)
{
Index fieldCount = srcVal->fields.getCount();
for (Index fieldIndex = 0; fieldIndex < fieldCount; ++fieldIndex)
{
auto& field = srcVal->fields[fieldIndex];
if (field.name.getLength() == 0)
{
// If no name was given, assume by-indexing matching is requested
auto fieldCursor = dstCursor.getElement((GfxIndex)fieldIndex);
if (!fieldCursor.isValid())
{
StdWriters::getError().print(
"error: could not find shader parameter at index %d\n",
(int)fieldIndex);
return SLANG_E_INVALID_ARG;
}
SLANG_RETURN_ON_FAIL(assign(fieldCursor, field.val));
}
else
{
auto fieldCursor = dstCursor.getPath(field.name.getBuffer());
if (!fieldCursor.isValid())
{
StdWriters::getError().print(
"error: could not find shader parameter matching '%s'\n",
field.name.begin());
return SLANG_E_INVALID_ARG;
}
SLANG_RETURN_ON_FAIL(assign(fieldCursor, field.val));
}
}
return SLANG_OK;
}
SlangResult assignObject(ShaderCursor const& dstCursor, ShaderInputLayout::ObjectVal* srcVal)
{
auto typeName = srcVal->typeName;
slang::TypeReflection* slangType = nullptr;
if (typeName.getLength() != 0)
{
// If the input line specified the name of the type
// to allocate, then we use it directly.
//
slangType = slangReflection()->findTypeByName(typeName.getBuffer());
}
else
{
// if the user did not specify what type to allocate,
// then we will infer the type from the type of the
// value pointed to by `entryCursor`.
//
auto slangTypeLayout = dstCursor.getTypeLayout();
switch (slangTypeLayout->getKind())
{
default:
break;
case slang::TypeReflection::Kind::ConstantBuffer:
case slang::TypeReflection::Kind::ParameterBlock:
// If the cursor is pointing at a constant buffer
// or parameter block, then we assume the user
// actually means to allocate an object based on
// the element type of the block.
//
slangTypeLayout = slangTypeLayout->getElementTypeLayout();
break;
}
slangType = slangTypeLayout->getType();
}
ComPtr<IShaderObject> shaderObject;
device->createShaderObject(
slangSession(),
slangType,
ShaderObjectContainerType::None,
shaderObject.writeRef());
SLANG_RETURN_ON_FAIL(assign(ShaderCursor(shaderObject), srcVal->contentVal));
shaderObject->finalize();
dstCursor.setObject(shaderObject);
return SLANG_OK;
}
SlangResult assignValWithSpecializationArg(
ShaderCursor const& dstCursor,
ShaderInputLayout::SpecializeVal* srcVal)
{
assign(dstCursor, srcVal->contentVal);
List<slang::SpecializationArg> args;
for (auto& typeName : srcVal->typeArgs)
{
auto slangType = slangReflection()->findTypeByName(typeName.getBuffer());
if (!slangType)
{
StdWriters::getError().print(
"error: could not find shader type '%s'\n",
typeName.getBuffer());
return SLANG_E_INVALID_ARG;
}
args.add(slang::SpecializationArg::fromType(slangType));
}
return dstCursor.setSpecializationArgs(args.getBuffer(), (uint32_t)args.getCount());
}
SlangResult assignArray(ShaderCursor const& dstCursor, ShaderInputLayout::ArrayVal* srcVal)
{
Index elementCounter = 0;
for (auto elementVal : srcVal->vals)
{
Index elementIndex = elementCounter++;
SLANG_RETURN_ON_FAIL(assign(dstCursor[elementIndex], elementVal));
}
return SLANG_OK;
}
SlangResult assignAccelerationStructure(
ShaderCursor const& dstCursor,
ShaderInputLayout::AccelerationStructureVal* srcVal)
{
dstCursor.setBinding(accelerationStructure);
return SLANG_OK;
}
SlangResult assign(ShaderCursor const& dstCursor, ShaderInputLayout::ValPtr const& srcVal)
{
auto& entryCursor = dstCursor;
switch (srcVal->kind)
{
case ShaderInputType::UniformData:
return assignData(dstCursor, (ShaderInputLayout::DataVal*)srcVal.Ptr());
case ShaderInputType::Buffer:
return assignBuffer(dstCursor, (ShaderInputLayout::BufferVal*)srcVal.Ptr());
case ShaderInputType::CombinedTextureSampler:
return assignCombinedTextureSampler(
dstCursor,
(ShaderInputLayout::CombinedTextureSamplerVal*)srcVal.Ptr());
case ShaderInputType::Texture:
return assignTexture(dstCursor, (ShaderInputLayout::TextureVal*)srcVal.Ptr());
case ShaderInputType::Sampler:
return assignSampler(dstCursor, (ShaderInputLayout::SamplerVal*)srcVal.Ptr());
case ShaderInputType::Object:
return assignObject(dstCursor, (ShaderInputLayout::ObjectVal*)srcVal.Ptr());
case ShaderInputType::Specialize:
return assignValWithSpecializationArg(
dstCursor,
(ShaderInputLayout::SpecializeVal*)srcVal.Ptr());
case ShaderInputType::Aggregate:
return assignAggregate(dstCursor, (ShaderInputLayout::AggVal*)srcVal.Ptr());
case ShaderInputType::Array:
return assignArray(dstCursor, (ShaderInputLayout::ArrayVal*)srcVal.Ptr());
case ShaderInputType::AccelerationStructure:
return assignAccelerationStructure(
dstCursor,
(ShaderInputLayout::AccelerationStructureVal*)srcVal.Ptr());
default:
assert(!"Unhandled type");
return SLANG_FAIL;
}
}
};
static SlangResult _assignVarsFromLayout(
IDevice* device,
slang::IComponentType* slangComponent,
IShaderObject* shaderObject,
ShaderInputLayout const& layout,
ShaderOutputPlan& ioOutputPlan,
TestResourceContext& ioResourceContext,
IAccelerationStructure* accelerationStructure)
{
AssignValsFromLayoutContext
context(device, slangComponent, ioOutputPlan, ioResourceContext, accelerationStructure);
ShaderCursor rootCursor = ShaderCursor(shaderObject);
return context.assign(rootCursor, layout.rootVal);
}
Result RenderTestApp::applyBinding(IShaderObject* rootObject)
{
return _assignVarsFromLayout(
m_device,
m_compilationOutput.output.slangProgram,
rootObject,
m_compilationOutput.layout,
m_outputPlan,
m_resourceContext,
m_topLevelAccelerationStructure);
}
SlangResult RenderTestApp::initialize(
SlangSession* session,
IDevice* device,
const Options& options,
const ShaderCompilerUtil::Input& input)
{
m_options = options;
// We begin by compiling the shader file and entry points that specified via the options.
//
SLANG_RETURN_ON_FAIL(ShaderCompilerUtil::compileWithLayout(
device->getSlangSession()->getGlobalSession(),
options,
input,
m_compilationOutput));
m_shaderInputLayout = m_compilationOutput.layout;
// Once the shaders have been compiled we load them via the underlying API.
//
ComPtr<ISlangBlob> outDiagnostics;
auto result = device->createShaderProgram(
m_compilationOutput.output.desc,
m_shaderProgram.writeRef(),
outDiagnostics.writeRef());
// If there was a failure creating a program, we can't continue
// Special case SLANG_E_NOT_AVAILABLE error code to make it a failure,
// as it is also used to indicate an attempt setup something failed gracefully (because it
// couldn't be supported) but that's not this.
if (SLANG_FAILED(result))
{
result = (result == SLANG_E_NOT_AVAILABLE) ? SLANG_FAIL : result;
return result;
}
m_device = device;
_initializeRenderPass();
_initializeAccelerationStructure();
{
switch (m_options.shaderType)
{
default:
assert(!"unexpected test shader type");
return SLANG_FAIL;
case Options::ShaderProgramType::Compute:
{
ComputePipelineDesc desc;
desc.program = m_shaderProgram;
m_pipeline = device->createComputePipeline(desc);
}
break;
case Options::ShaderProgramType::Graphics:
case Options::ShaderProgramType::GraphicsCompute:
{
// TODO: We should conceivably be able to match up the "available" vertex
// attributes, as defined by the vertex stream(s) on the model being
// renderer, with the "required" vertex attributes as defiend on the
// shader.
//
// For now we just create a fixed input layout for all graphics tests
// since at present they all draw the same single triangle with a
// fixed/known set of attributes.
//
const InputElementDesc inputElements[] = {
{"A", 0, Format::R32G32B32_FLOAT, offsetof(Vertex, position)},
{"A", 1, Format::R32G32B32_FLOAT, offsetof(Vertex, color)},
{"A", 2, Format::R32G32_FLOAT, offsetof(Vertex, uv)},
{"A", 3, Format::R32G32B32A32_FLOAT, offsetof(Vertex, customData0)},
{"A", 4, Format::R32G32B32A32_FLOAT, offsetof(Vertex, customData1)},
{"A", 5, Format::R32G32B32A32_FLOAT, offsetof(Vertex, customData2)},
{"A", 6, Format::R32G32B32A32_FLOAT, offsetof(Vertex, customData3)},
};
ComPtr<IInputLayout> inputLayout;
SLANG_RETURN_ON_FAIL(device->createInputLayout(
sizeof(Vertex),
inputElements,
SLANG_COUNT_OF(inputElements),
inputLayout.writeRef()));
BufferDesc vertexBufferDesc;
vertexBufferDesc.size = kVertexCount * sizeof(Vertex);
vertexBufferDesc.memoryType = MemoryType::DeviceLocal;
vertexBufferDesc.usage = BufferUsage::VertexBuffer;
vertexBufferDesc.defaultState = ResourceState::VertexBuffer;
SLANG_RETURN_ON_FAIL(
device->createBuffer(vertexBufferDesc, kVertexData, m_vertexBuffer.writeRef()));
ColorTargetState colorTarget;
colorTarget.format = Format::R8G8B8A8_UNORM;
RenderPipelineDesc desc;
desc.program = m_shaderProgram;
desc.inputLayout = inputLayout;
desc.targets = &colorTarget;
desc.targetCount = 1;
desc.depthStencil.format = Format::D32_FLOAT;
m_pipeline = device->createRenderPipeline(desc);
}
break;
case Options::ShaderProgramType::GraphicsMeshCompute:
case Options::ShaderProgramType::GraphicsTaskMeshCompute:
{
ColorTargetState colorTarget;
colorTarget.format = Format::R8G8B8A8_UNORM;
RenderPipelineDesc desc;
desc.program = m_shaderProgram;
desc.targets = &colorTarget;
desc.targetCount = 1;
desc.depthStencil.format = Format::D32_FLOAT;
m_pipeline = device->createRenderPipeline(desc);
}
}
}
// If success must have a pipeline state
return m_pipeline ? SLANG_OK : SLANG_FAIL;
}
Result RenderTestApp::_initializeShaders(
SlangSession* session,
IDevice* device,
Options::ShaderProgramType shaderType,
const ShaderCompilerUtil::Input& input)
{
SLANG_RETURN_ON_FAIL(ShaderCompilerUtil::compileWithLayout(
device->getSlangSession()->getGlobalSession(),
m_options,
input,
m_compilationOutput));
m_shaderInputLayout = m_compilationOutput.layout;
m_shaderProgram = device->createShaderProgram(m_compilationOutput.output.desc);
return m_shaderProgram ? SLANG_OK : SLANG_FAIL;
}
void RenderTestApp::_initializeRenderPass()
{
m_queue = m_device->getQueue(QueueType::Graphics);
SLANG_ASSERT(m_queue);
rhi::TextureDesc depthBufferDesc;
depthBufferDesc.type = TextureType::Texture2D;
depthBufferDesc.size.width = gWindowWidth;
depthBufferDesc.size.height = gWindowHeight;
depthBufferDesc.size.depth = 1;
depthBufferDesc.mipLevelCount = 1;
depthBufferDesc.format = Format::D32_FLOAT;
depthBufferDesc.usage = TextureUsage::DepthWrite;
depthBufferDesc.defaultState = ResourceState::DepthWrite;
m_depthBuffer = m_device->createTexture(depthBufferDesc, nullptr);
SLANG_ASSERT(m_depthBuffer);
m_depthBufferView = m_device->createTextureView(m_depthBuffer, {});
SLANG_ASSERT(m_depthBufferView);
rhi::TextureDesc colorBufferDesc;
colorBufferDesc.type = TextureType::Texture2D;
colorBufferDesc.size.width = gWindowWidth;
colorBufferDesc.size.height = gWindowHeight;
colorBufferDesc.size.depth = 1;
colorBufferDesc.mipLevelCount = 1;
colorBufferDesc.format = Format::R8G8B8A8_UNORM;
colorBufferDesc.usage = TextureUsage::RenderTarget | TextureUsage::CopySource;
colorBufferDesc.defaultState = ResourceState::RenderTarget;
m_colorBuffer = m_device->createTexture(colorBufferDesc, nullptr);
SLANG_ASSERT(m_colorBuffer);
m_colorBufferView = m_device->createTextureView(m_colorBuffer, {});
SLANG_ASSERT(m_colorBufferView);
}
void RenderTestApp::_initializeAccelerationStructure()
{
if (!m_device->hasFeature("ray-tracing"))
return;
BufferDesc vertexBufferDesc = {};
vertexBufferDesc.size = kVertexCount * sizeof(Vertex);
vertexBufferDesc.usage = BufferUsage::AccelerationStructureBuildInput;
vertexBufferDesc.defaultState = ResourceState::AccelerationStructureBuildInput;
ComPtr<IBuffer> vertexBuffer = m_device->createBuffer(vertexBufferDesc, &kVertexData[0]);
BufferDesc transformBufferDesc = {};
transformBufferDesc.size = sizeof(float) * 12;
transformBufferDesc.usage = BufferUsage::AccelerationStructureBuildInput;
transformBufferDesc.defaultState = ResourceState::AccelerationStructureBuildInput;
float transformData[12] =
{1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f};
ComPtr<IBuffer> transformBuffer = m_device->createBuffer(transformBufferDesc, &transformData);
// Build bottom level acceleration structure.
{
AccelerationStructureBuildInputTriangles triangles = {};
BufferWithOffset vertexBufferWithOffset = vertexBuffer;
triangles.vertexBuffers = &vertexBufferWithOffset;
triangles.vertexBufferCount = 1;
triangles.vertexFormat = Format::R32G32B32_FLOAT;
triangles.vertexCount = kVertexCount;
triangles.vertexStride = sizeof(Vertex);
triangles.preTransformBuffer = transformBuffer;
triangles.flags = AccelerationStructureGeometryFlags::Opaque;
AccelerationStructureBuildDesc buildDesc = {};
buildDesc.inputs = &triangles;
buildDesc.inputCount = 1;
buildDesc.flags = AccelerationStructureBuildFlags::AllowCompaction;
// Query buffer size for acceleration structure build.
AccelerationStructureSizes accelerationStructureSizes = {};
m_device->getAccelerationStructureSizes(buildDesc, &accelerationStructureSizes);
BufferDesc scratchBufferDesc = {};
scratchBufferDesc.usage = BufferUsage::UnorderedAccess;
scratchBufferDesc.defaultState = ResourceState::UnorderedAccess;
scratchBufferDesc.size = accelerationStructureSizes.scratchSize;
ComPtr<IBuffer> scratchBuffer = m_device->createBuffer(scratchBufferDesc);
ComPtr<IQueryPool> compactedSizeQuery;
QueryPoolDesc queryPoolDesc = {};
queryPoolDesc.count = 1;
queryPoolDesc.type = QueryType::AccelerationStructureCompactedSize;
m_device->createQueryPool(queryPoolDesc, compactedSizeQuery.writeRef());
// Build acceleration structure.
ComPtr<IAccelerationStructure> draftAS;
AccelerationStructureDesc draftDesc = {};
draftDesc.size = accelerationStructureSizes.accelerationStructureSize;
m_device->createAccelerationStructure(draftDesc, draftAS.writeRef());
compactedSizeQuery->reset();
auto encoder = m_queue->createCommandEncoder();
AccelerationStructureQueryDesc compactedSizeQueryDesc = {};
compactedSizeQueryDesc.queryPool = compactedSizeQuery;
compactedSizeQueryDesc.queryType = QueryType::AccelerationStructureCompactedSize;
encoder->buildAccelerationStructure(
buildDesc,
draftAS,
nullptr,
scratchBuffer,
1,
&compactedSizeQueryDesc);
m_queue->submit(encoder->finish());
m_queue->waitOnHost();
uint64_t compactedSize = 0;
compactedSizeQuery->getResult(0, 1, &compactedSize);
AccelerationStructureDesc finalDesc;
finalDesc.size = compactedSize;
m_device->createAccelerationStructure(
finalDesc,
m_bottomLevelAccelerationStructure.writeRef());
encoder = m_queue->createCommandEncoder();
encoder->copyAccelerationStructure(
m_bottomLevelAccelerationStructure,
draftAS,
AccelerationStructureCopyMode::Compact);
m_queue->submit(encoder->finish());
m_queue->waitOnHost();
}
// Build top level acceleration structure.
{
AccelerationStructureInstanceDescType nativeInstanceDescType =
getAccelerationStructureInstanceDescType(m_device);
Size nativeInstanceDescSize =
getAccelerationStructureInstanceDescSize(nativeInstanceDescType);
List<AccelerationStructureInstanceDescGeneric> genericInstanceDescs;
genericInstanceDescs.setCount(1);
genericInstanceDescs[0].accelerationStructure =
m_bottomLevelAccelerationStructure->getHandle();
genericInstanceDescs[0].flags =
AccelerationStructureInstanceFlags::TriangleFacingCullDisable;
genericInstanceDescs[0].instanceContributionToHitGroupIndex = 0;
genericInstanceDescs[0].instanceID = 0;
genericInstanceDescs[0].instanceMask = 0xFF;
float transformMatrix[] =
{1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f};
memcpy(&genericInstanceDescs[0].transform[0][0], transformMatrix, sizeof(float) * 12);
List<unsigned char> nativeInstanceDescs;
nativeInstanceDescs.setCount(genericInstanceDescs.getCount() * nativeInstanceDescSize);
convertAccelerationStructureInstanceDescs(
genericInstanceDescs.getCount(),
nativeInstanceDescType,
nativeInstanceDescs.getBuffer(),
nativeInstanceDescSize,
genericInstanceDescs.getBuffer(),
sizeof(AccelerationStructureInstanceDescGeneric));
BufferDesc instanceBufferDesc = {};
instanceBufferDesc.size = nativeInstanceDescs.getCount();
instanceBufferDesc.usage = BufferUsage::AccelerationStructureBuildInput;
instanceBufferDesc.defaultState = ResourceState::AccelerationStructureBuildInput;
ComPtr<IBuffer> instanceBuffer =
m_device->createBuffer(instanceBufferDesc, nativeInstanceDescs.getBuffer());
AccelerationStructureBuildInputInstances instances = {};
instances.instanceBuffer = instanceBuffer;
instances.instanceCount = 1;
instances.instanceStride = nativeInstanceDescSize;
AccelerationStructureBuildDesc buildDesc = {};
buildDesc.inputs = &instances;
buildDesc.inputCount = 1;
// Query buffer size for acceleration structure build.
AccelerationStructureSizes accelerationStructureSizes = {};
m_device->getAccelerationStructureSizes(buildDesc, &accelerationStructureSizes);
BufferDesc scratchBufferDesc = {};
scratchBufferDesc.usage = BufferUsage::UnorderedAccess;
scratchBufferDesc.defaultState = ResourceState::UnorderedAccess;
scratchBufferDesc.size = (size_t)accelerationStructureSizes.scratchSize;
ComPtr<IBuffer> scratchBuffer = m_device->createBuffer(scratchBufferDesc);
AccelerationStructureDesc createDesc = {};
createDesc.size = accelerationStructureSizes.accelerationStructureSize;
m_device->createAccelerationStructure(
createDesc,
m_topLevelAccelerationStructure.writeRef());
auto encoder = m_queue->createCommandEncoder();
encoder->buildAccelerationStructure(
buildDesc,
m_topLevelAccelerationStructure,
nullptr,
scratchBuffer,
0,
nullptr);
m_queue->submit(encoder->finish());
m_queue->waitOnHost();
}
}
void RenderTestApp::setProjectionMatrix(IShaderObject* rootObject)
{
auto info = m_device->getDeviceInfo();
ShaderCursor(rootObject)
.getField("Uniforms")
.getDereferenced()
.setData(info.identityProjectionMatrix, sizeof(float) * 16);
}
void RenderTestApp::finalize()
{
m_compilationOutput.output.reset();
}
Result RenderTestApp::writeBindingOutput(const String& fileName)
{
// Wait until everything is complete
m_queue->waitOnHost();
FILE* f = fopen(fileName.getBuffer(), "wb");
if (!f)
{
return SLANG_FAIL;
}
FileWriter writer(f, WriterFlags(0));
for (auto outputItem : m_outputPlan.items)
{
auto resource = outputItem.resource;
IBuffer* buffer = nullptr;
resource->queryInterface(IBuffer::getTypeGuid(), (void**)&buffer);
if (buffer)
{
const BufferDesc& bufferDesc = buffer->getDesc();
const size_t bufferSize = bufferDesc.size;
ComPtr<ISlangBlob> blob;
m_device->readBuffer(buffer, 0, bufferSize, blob.writeRef());
buffer->release();
if (!blob)
{
return SLANG_FAIL;
}
const SlangResult res = ShaderInputLayout::writeBinding(
m_options.outputUsingType ? outputItem.typeLayout
: nullptr, // TODO: always output using type
blob->getBufferPointer(),
bufferSize,
&writer);
SLANG_RETURN_ON_FAIL(res);
}
else
{
auto typeName = outputItem.typeLayout->getName();
printf("invalid output type '%s'.\n", typeName ? typeName : "UNKNOWN");
}
}
return SLANG_OK;
}
Result RenderTestApp::writeScreen(const String& filename)
{
size_t rowPitch, pixelSize;
ComPtr<ISlangBlob> blob;
SLANG_RETURN_ON_FAIL(
m_device->readTexture(m_colorBuffer, blob.writeRef(), &rowPitch, &pixelSize));
auto bufferSize = blob->getBufferSize();
uint32_t width = static_cast<uint32_t>(rowPitch / pixelSize);
uint32_t height = static_cast<uint32_t>(bufferSize / rowPitch);
return PngSerializeUtil::write(filename.getBuffer(), blob, width, height);
}
Result RenderTestApp::update()
{
auto encoder = m_queue->createCommandEncoder();
if (m_options.shaderType == Options::ShaderProgramType::Compute)
{
auto rootObject = m_device->createRootShaderObject(m_pipeline);
applyBinding(rootObject);
rootObject->finalize();
auto passEncoder = encoder->beginComputePass();
ComputeState state;
state.pipeline = static_cast<IComputePipeline*>(m_pipeline.get());
state.rootObject = rootObject;
passEncoder->setComputeState(state);
passEncoder->dispatchCompute(
m_options.computeDispatchSize[0],
m_options.computeDispatchSize[1],
m_options.computeDispatchSize[2]);
passEncoder->end();
}
else
{
auto rootObject = m_device->createRootShaderObject(m_pipeline);
applyBinding(rootObject);
setProjectionMatrix(rootObject);
rootObject->finalize();
RenderPassColorAttachment colorAttachment = {};
colorAttachment.view = m_colorBufferView;
colorAttachment.loadOp = LoadOp::Clear;
colorAttachment.storeOp = StoreOp::Store;
RenderPassDepthStencilAttachment depthStencilAttachment = {};
depthStencilAttachment.view = m_depthBufferView;
depthStencilAttachment.depthLoadOp = LoadOp::Clear;
depthStencilAttachment.depthStoreOp = StoreOp::Store;
RenderPassDesc renderPass = {};
renderPass.colorAttachments = &colorAttachment;
renderPass.colorAttachmentCount = 1;
renderPass.depthStencilAttachment = &depthStencilAttachment;
auto passEncoder = encoder->beginRenderPass(renderPass);
RenderState state;
state.pipeline = static_cast<IRenderPipeline*>(m_pipeline.get());
state.rootObject = rootObject;
state.viewports[0] = Viewport((float)gWindowWidth, (float)gWindowHeight);