void EdgeDistanceComputeShader::setParameters( ID3D11DeviceContext& deviceContext,
const Texture2DSpecBind< TexBind::ShaderResource, unsigned char >& distToEdgeTexture,
const unsigned char passIndex )
{
if ( !m_compiled ) throw std::exception( "EdgeDistanceComputeShader::setParameters - Shader hasn't been compiled yet." );
{ // Set input textures.
const unsigned int resourceCount = 1;
ID3D11ShaderResourceView* resources[ resourceCount ] = {
distToEdgeTexture.getShaderResourceView()
};
deviceContext.CSSetShaderResources( 0, resourceCount, resources );
}
D3D11_MAPPED_SUBRESOURCE mappedResource;
ConstantBuffer* dataPtr;
HRESULT result = deviceContext.Map( m_constantInputBuffer.Get(), 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource );
if ( result < 0 ) throw std::exception( "EdgeDistanceComputeShader::setParameters - mapping constant buffer to CPU memory failed." );
dataPtr = (ConstantBuffer*)mappedResource.pData;
dataPtr->passIndex = passIndex;
dataPtr->pad1 = float3( 0.0f, 0.0f, 0.0f ); // Padding.
deviceContext.Unmap( m_constantInputBuffer.Get(), 0 );
deviceContext.CSSetConstantBuffers( 0, 1, m_constantInputBuffer.GetAddressOf() );
}
void RasterizingShadowsComputeShader::setParameters(
ID3D11DeviceContext& deviceContext,
const float3& cameraPos,
const Light& light,
const Texture2DSpecBind< TexBind::ShaderResource, float4 >& rayOriginTexture,
const Texture2DSpecBind< TexBind::ShaderResource, float4 >& surfaceNormalTexture,
const int outputTextureWidth, const int outputTextureHeight )
{
if ( !m_compiled )
throw std::exception( "RasterizingShadowsComputeShader::setParameters - Shader hasn't been compiled yet." );
std::shared_ptr< Texture2DSpecBind< TexBind::ShaderResource, float > > shadowMap;
if ( light.getType() == Light::Type::SpotLight )
shadowMap = static_cast<const SpotLight&>( light ).getShadowMap();
{ // Set input buffers and textures.
const unsigned int resourceCount = 3;
ID3D11ShaderResourceView* resources[ resourceCount ] = {
rayOriginTexture.getShaderResourceView(),
surfaceNormalTexture.getShaderResourceView(),
shadowMap ? shadowMap->getShaderResourceView() : nullptr,
};
deviceContext.CSSetShaderResources( 0, resourceCount, resources );
}
{ // Set constant buffer.
D3D11_MAPPED_SUBRESOURCE mappedResource;
ConstantBuffer* dataPtr;
HRESULT result = deviceContext.Map( m_constantInputBuffer.Get(), 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource );
if ( result < 0 )
throw std::exception( "RasterizingShadowsComputeShader::setParameters - mapping constant buffer to CPU memory failed." );
dataPtr = (ConstantBuffer*)mappedResource.pData;
dataPtr->outputTextureSize = float2( (float)outputTextureWidth, (float)outputTextureHeight );
dataPtr->lightPosition = light.getPosition();
dataPtr->lightEmitterRadius = light.getEmitterRadius();
const SpotLight& spotLight = static_cast<const SpotLight&>( light );
dataPtr->shadowMapViewMatrix = spotLight.getShadowMapViewMatrix().getTranspose();
dataPtr->shadowMapProjectionMatrix = spotLight.getShadowMapProjectionMatrix().getTranspose();
dataPtr->lightConeMinDot = cos( spotLight.getConeAngle() );
dataPtr->lightDirection = spotLight.getDirection();
dataPtr->cameraPosition = cameraPos;
deviceContext.Unmap( m_constantInputBuffer.Get(), 0 );
deviceContext.CSSetConstantBuffers( 0, 1, m_constantInputBuffer.GetAddressOf() );
}
{ // Set texture samplers.
ID3D11SamplerState* samplerStates[] = { m_pointSamplerState.Get(), m_linearSamplerState.Get() };
deviceContext.CSSetSamplers( 0, 2, samplerStates );
}
}
/** Sets a buffer of values on the current shader instance. */
void Shader::SetConstantBuffer(u32 index, std::shared_ptr<ConstantBufferBase> buffer)
{
ID3D11Buffer* bufferD3D = buffer != nullptr ? buffer->GetBuffer() : nullptr;
ID3D11DeviceContext* context = GetParent()->GetDeviceContext();
switch(GetType())
{
case ShaderType::Compute:
context->CSSetConstantBuffers(index, 1, &bufferD3D);
break;
case ShaderType::Domain:
context->DSSetConstantBuffers(index, 1, &bufferD3D);
break;
case ShaderType::Geometry:
context->GSSetConstantBuffers(index, 1, &bufferD3D);
break;
case ShaderType::Hull:
context->HSSetConstantBuffers(index, 1, &bufferD3D);
break;
case ShaderType::Pixel:
context->PSSetConstantBuffers(index, 1, &bufferD3D);
break;
case ShaderType::Vertex:
context->VSSetConstantBuffers(index, 1, &bufferD3D);
break;
}
}
void GenerateFirstRefractedRaysComputeShader::setParameters( ID3D11DeviceContext& deviceContext, const float3 cameraPos, const float3 viewportCenter,
const float3 viewportUp, const float3 viewportRight, const float2 viewportSize,
const Texture2DSpecBind< TexBind::ShaderResource, float4 >& positionTexture,
const Texture2DSpecBind< TexBind::ShaderResource, float4 >& normalTexture,
const Texture2DSpecBind< TexBind::ShaderResource, unsigned char >& roughnessTexture,
const Texture2DSpecBind< TexBind::ShaderResource, unsigned char >& refractiveIndexTexture,
const Texture2DSpecBind< TexBind::ShaderResource, uchar4 >& contributionTermTexture,
const int outputTextureWidth, const int outputTextureHeight )
{
if ( !m_compiled ) throw std::exception( "GenerateFirstRefractedRaysComputeShader::setParameters - Shader hasn't been compiled yet." );
{ // Set input buffers and textures.
m_resourceCount = 5 /*+ (int)refractiveIndexTextures.size()*/;
std::vector< ID3D11ShaderResourceView* > resources;
resources.reserve( m_resourceCount );
resources.push_back( positionTexture.getShaderResourceView() );
resources.push_back( normalTexture.getShaderResourceView() );
resources.push_back( roughnessTexture.getShaderResourceView() );
resources.push_back( refractiveIndexTexture.getShaderResourceView() );
resources.push_back( contributionTermTexture.getShaderResourceView() );
/*for ( int i = 0; i < refractiveIndexTextures .size(); ++i )
resources.push_back( refractiveIndexTextures[ i ]->getShaderResourceView() );*/
deviceContext.CSSetShaderResources( 0, m_resourceCount, resources.data() );
}
D3D11_MAPPED_SUBRESOURCE mappedResource;
ConstantBuffer* dataPtr;
HRESULT result = deviceContext.Map( m_constantInputBuffer.Get(), 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource );
if ( result < 0 ) throw std::exception( "GenerateFirstRefractedRaysComputeShader::setParameters - mapping constant buffer to CPU memory failed." );
dataPtr = (ConstantBuffer*)mappedResource.pData;
dataPtr->cameraPos = cameraPos;
dataPtr->viewportCenter = viewportCenter;
dataPtr->viewportUp = viewportUp;
dataPtr->viewportRight = viewportRight;
dataPtr->viewportSizeHalf = viewportSize / 2.0f;
dataPtr->outputTextureSize = float2( (float)outputTextureWidth, (float)outputTextureHeight );
// Padding.
dataPtr->pad1 = 0.0f;
dataPtr->pad2 = 0.0f;
dataPtr->pad3 = 0.0f;
dataPtr->pad4 = 0.0f;
dataPtr->pad5 = float2( 0.0f, 0.0f );
deviceContext.Unmap( m_constantInputBuffer.Get(), 0 );
deviceContext.CSSetConstantBuffers( 0, 1, m_constantInputBuffer.GetAddressOf() );
ID3D11SamplerState* samplerStates[] = { m_samplerStateLinearFilter.Get() };
deviceContext.CSSetSamplers( 0, 1, samplerStates );
}
void ShadingComputeShader::setParameters( ID3D11DeviceContext& deviceContext, const float3& cameraPos,
const std::shared_ptr< Texture2DSpecBind< TexBind::ShaderResource, float4 > > positionTexture,
const std::shared_ptr< Texture2DSpecBind< TexBind::ShaderResource, uchar4 > > albedoTexture,
const std::shared_ptr< Texture2DSpecBind< TexBind::ShaderResource, unsigned char > > metalnessTexture,
const std::shared_ptr< Texture2DSpecBind< TexBind::ShaderResource, unsigned char > > roughnessTexture,
const std::shared_ptr< Texture2DSpecBind< TexBind::ShaderResource, float4 > > normalTexture,
const std::shared_ptr< Texture2DSpecBind< TexBind::ShaderResource, unsigned char > > illuminationTexture,
const Light& light )
{
if ( !m_compiled )
throw std::exception( "ShadingComputeShader::setParameters - Shader hasn't been compiled yet." );
{ // Set input buffers and textures.
const unsigned int resourceCount = 6;
ID3D11ShaderResourceView* resources[ resourceCount ] = {
positionTexture->getShaderResourceView(),
albedoTexture->getShaderResourceView(),
metalnessTexture->getShaderResourceView(),
roughnessTexture->getShaderResourceView(),
normalTexture->getShaderResourceView(),
illuminationTexture->getShaderResourceView()
};
deviceContext.CSSetShaderResources( 0, resourceCount, resources );
}
{ // Set constant buffer.
D3D11_MAPPED_SUBRESOURCE mappedResource;
ConstantBuffer* dataPtr;
HRESULT result = deviceContext.Map( m_constantInputBuffer.Get(), 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource );
if ( result < 0 )
throw std::exception( "ShadingComputeShader::setParameters - mapping constant buffer to CPU memory failed." );
dataPtr = (ConstantBuffer*)mappedResource.pData;
dataPtr->cameraPos = cameraPos;
dataPtr->pad1 = 0.0f;
dataPtr->lightPosition = float4( light.getPosition(), 0.0f );
dataPtr->lightColor = float4( light.getColor(), 0.0f );
dataPtr->outputTextureSize = float2( (float)positionTexture->getWidth(), (float)positionTexture->getHeight() ); // #TODO: Size should be taken from real output texture, not one of inputs (right now, we are assuming they have the same size).
deviceContext.Unmap( m_constantInputBuffer.Get(), 0 );
deviceContext.CSSetConstantBuffers( 0, 1, m_constantInputBuffer.GetAddressOf() );
}
{ // Set texture sampler.
ID3D11SamplerState* samplers[] = { m_linearSamplerState.Get(), m_pointSamplerState.Get() };
deviceContext.CSSetSamplers( 0, 2, samplers );
}
}
void GenerateRefractedRaysComputeShader::setParameters( ID3D11DeviceContext& deviceContext, const unsigned int refractionLevel,
const Texture2DSpecBind< TexBind::ShaderResource, float4 >& rayDirectionTexture,
const Texture2DSpecBind< TexBind::ShaderResource, float4 >& rayHitPositionTexture,
const Texture2DSpecBind< TexBind::ShaderResource, float4 >& rayHitNormalTexture,
const Texture2DSpecBind< TexBind::ShaderResource, unsigned char >& rayHitRoughnessTexture,
const Texture2DSpecBind< TexBind::ShaderResource, unsigned char >& rayHitRefractiveIndexTexture,
const Texture2DSpecBind< TexBind::ShaderResource, uchar4 >& contributionTermTexture,
const std::shared_ptr< Texture2DSpecBind< TexBind::ShaderResource, unsigned char > > prevRefractiveIndexTexture, // Only makes sense for refraction level >= 2.
const std::shared_ptr< const Texture2DSpecBind< TexBind::ShaderResource, unsigned char > > currentRefractiveIndexTexture,
const int outputTextureWidth, const int outputTextureHeight )
{
if ( !m_compiled ) throw std::exception( "GenerateRefractedRaysComputeShader::setParameters - Shader hasn't been compiled yet." );
{ // Set input buffers and textures.
m_resourceCount = 8;
std::vector< ID3D11ShaderResourceView* > resources;
resources.reserve( m_resourceCount );
resources.push_back( rayDirectionTexture.getShaderResourceView() );
resources.push_back( rayHitPositionTexture.getShaderResourceView() );
resources.push_back( rayHitNormalTexture.getShaderResourceView() );
resources.push_back( rayHitRoughnessTexture.getShaderResourceView() );
resources.push_back( rayHitRefractiveIndexTexture.getShaderResourceView() );
resources.push_back( contributionTermTexture.getShaderResourceView() );
resources.push_back( prevRefractiveIndexTexture ? prevRefractiveIndexTexture->getShaderResourceView() : nullptr );
resources.push_back( currentRefractiveIndexTexture ? currentRefractiveIndexTexture->getShaderResourceView() : nullptr );
deviceContext.CSSetShaderResources( 0, m_resourceCount, resources.data() );
}
D3D11_MAPPED_SUBRESOURCE mappedResource;
ConstantBuffer* dataPtr;
HRESULT result = deviceContext.Map( m_constantInputBuffer.Get(), 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource );
if ( result < 0 ) throw std::exception( "GenerateRefractedRaysComputeShader::setParameters - mapping constant buffer to CPU memory failed." );
dataPtr = (ConstantBuffer*)mappedResource.pData;
dataPtr->refractionLevel = refractionLevel;
dataPtr->outputTextureSize = float2( (float)outputTextureWidth, (float)outputTextureHeight );
deviceContext.Unmap( m_constantInputBuffer.Get(), 0 );
deviceContext.CSSetConstantBuffers( 0, 1, m_constantInputBuffer.GetAddressOf() );
ID3D11SamplerState* samplerStates[] = { m_samplerStateLinearFilter.Get() };
deviceContext.CSSetSamplers( 0, 1, samplerStates );
}
//==================================================================================================================================
void HDR::UpdateContantBuffer(int mipLevel0, int mipLevel1, unsigned int width, unsigned int height)
{
ID3D11DeviceContext* context = mD3DSystem->GetDeviceContext();
cbConstants cConst;
cConst.width = width;
cConst.height = height;
cConst.mipLevel0 = mipLevel0;
cConst.mipLevel1 = mipLevel1;
D3D11_MAPPED_SUBRESOURCE mapped_res;
context->Map(m_pCSConstants, 0, D3D11_MAP_WRITE_DISCARD, 0, &mapped_res);
{
assert(mapped_res.pData);
*(cbConstants*)mapped_res.pData = cConst;
}
context->Unmap(m_pCSConstants, 0);
context->CSSetConstantBuffers(1, 1, &m_pCSConstants);
}
//==================================================================================================================================
void HDR::UpdateBloomConstants(float middleGrey, float bloomThreshold, float bloomMultiplier)
{
ID3D11DeviceContext* context = mD3DSystem->GetDeviceContext();
cbBloomConstants cBC;
cBC.g_MiddleGrey = middleGrey;
cBC.g_BloomThreshold = bloomThreshold;
cBC.g_BloomMultiplier = bloomMultiplier;
cBC.padding = 0;
D3D11_MAPPED_SUBRESOURCE mapped_res;
context->Map(m_pBloomConstants, 0, D3D11_MAP_WRITE_DISCARD, 0, &mapped_res);
{
assert(mapped_res.pData);
*(cbBloomConstants*)mapped_res.pData = cBC;
}
context->Unmap(m_pBloomConstants, 0);
context->CSSetConstantBuffers(2, 1, &m_pBloomConstants);
context->PSSetConstantBuffers(2, 1, &m_pBloomConstants);
}
void BindableProgram::Bind
(ID3D11DeviceContext& context,
ShaderLibrary& library,
const SourceConstantBufferPtr src_buffers [DEVICE_CONSTANT_BUFFER_SLOTS_COUNT],
const InputLayout& input_layout,
BindableProgramContext& program_context)
{
try
{
//поиск входного лэйаута
if (!program_context.input_layout)
{
program_context.input_layout = program.GetInputLayout (library, input_layout);
context.IASetInputLayout (program_context.input_layout.get ());
}
//биндинг программы
if (!program_context.program_binded)
{
program.Bind (context);
program_context.program_binded = true;
}
//поиск и биндинг буферов
//TODO: bindable buffers cache for dirty switch optimization
// if (program_context.has_dirty_buffers)
{
ID3D11Buffer* buffers [ShaderType_Num][DEVICE_CONSTANT_BUFFER_SLOTS_COUNT];
memset (buffers, 0, sizeof (buffers));
for (BufferPrototypeArray::iterator iter=buffer_prototypes.begin (), end=buffer_prototypes.end (); iter!=end; ++iter)
{
TargetConstantBufferPrototype& prototype = **iter;
const unsigned char* index = prototype.GetSourceBuffersIndices ();
bool dirty = false;
for (size_t i=0, count=prototype.GetSourceBuffersCount (); i<count; i++, index++)
if (program_context.dirty_buffers [*index])
{
dirty = true;
break;
}
// if (!dirty)
// continue;
TargetConstantBuffer& buffer = prototype.GetBuffer (src_buffers, library);
buffer.Bind (context, buffers);
}
//установка контекста
context.CSSetConstantBuffers (0, DEVICE_CONSTANT_BUFFER_SLOTS_COUNT, buffers [ShaderType_Compute]);
context.DSSetConstantBuffers (0, DEVICE_CONSTANT_BUFFER_SLOTS_COUNT, buffers [ShaderType_Domain]);
context.GSSetConstantBuffers (0, DEVICE_CONSTANT_BUFFER_SLOTS_COUNT, buffers [ShaderType_Geometry]);
context.HSSetConstantBuffers (0, DEVICE_CONSTANT_BUFFER_SLOTS_COUNT, buffers [ShaderType_Hull]);
context.PSSetConstantBuffers (0, DEVICE_CONSTANT_BUFFER_SLOTS_COUNT, buffers [ShaderType_Pixel]);
context.VSSetConstantBuffers (0, DEVICE_CONSTANT_BUFFER_SLOTS_COUNT, buffers [ShaderType_Vertex]);
program_context.has_dirty_buffers = false;
memset (program_context.dirty_buffers, 0, sizeof (program_context.dirty_buffers));
}
}
catch (xtl::exception& e)
{
e.touch ("render::low_level::dx11::BindableProgram::Bind");
throw;
}
}
int _tmain(int /*argc*/, _TCHAR* /*argv[]*/)
{
// GROUP_SIZE_X defined in kernel.hlsl must match the
// groupSize declared here.
size_t const groupSize = 512;
size_t const numGroups = 16;
size_t const dimension = numGroups*groupSize;
// Create a D3D11 device and immediate context.
// TODO: The code below uses the default video adapter, with the
// default set of feature levels. Please see the MSDN docs if
// you wish to control which adapter and feature level are used.
D3D_FEATURE_LEVEL featureLevel;
ID3D11Device* device = nullptr;
ID3D11DeviceContext* context = nullptr;
HRESULT hr = D3D11CreateDevice(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL,
NULL, NULL, 0, D3D11_SDK_VERSION, &device,
&featureLevel, &context);
if (FAILED(hr))
{
printf("D3D11CreateDevice failed with return code %x\n", hr);
return hr;
}
// Create system memory and fill it with our initial data. Note that
// these data structures aren't really necessary , it's just a demonstration
// of how you can take existing data structures you might have and copy
// their data to/from GPU computations.
std::vector<float> x(dimension);
std::vector<float> y(dimension);
std::vector<float> z(dimension);
float const a = 2.0f;
for (size_t i = 0; i < dimension; ++ i)
{
x[i] = static_cast<float>(i);
y[i] = 100 - static_cast<float>(i);
}
// Create structured buffers for the "x" and "y" vectors.
D3D11_BUFFER_DESC inputBufferDesc;
inputBufferDesc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
// The buffers are read-only by the GPU, writeable by the CPU.
// TODO: If you will never again upate the data in a GPU buffer,
// you might want to look at using a D3D11_SUBRESOURCE_DATA here to
// provide the initialization data instead of doing the mapping
// and copying that happens below.
inputBufferDesc.Usage = D3D11_USAGE_DYNAMIC;
inputBufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
inputBufferDesc.MiscFlags = D3D11_RESOURCE_MISC_BUFFER_STRUCTURED;
inputBufferDesc.StructureByteStride = sizeof(float);
inputBufferDesc.ByteWidth = sizeof(float) * dimension;
ID3D11Buffer* xBuffer = nullptr;
hr = device->CreateBuffer(&inputBufferDesc, NULL, &xBuffer);
if (FAILED(hr))
{
printf("CreateBuffer failed for x buffer with return code %x\n", hr);
return hr;
}
// We can re-use inputBufferDesc here because the layout and usage of the x
// and y buffers is exactly the same.
ID3D11Buffer* yBuffer = nullptr;
hr = device->CreateBuffer(&inputBufferDesc, NULL, &yBuffer);
if (FAILED(hr))
{
printf("CreateBuffer failed for x buffer with return code %x\n", hr);
return hr;
}
// Create shader resource views for the "x" and "y" buffers.
// TODO: You can optionally provide a D3D11_SHADER_RESOURCE_VIEW_DESC
// as the second parameter if you need to use only part of the buffer
// inside the compute shader.
ID3D11ShaderResourceView* xSRV = nullptr;
hr = device->CreateShaderResourceView(xBuffer, NULL, &xSRV);
if (FAILED(hr))
{
printf("CreateShaderResourceView failed for x buffer with return code %x\n", hr);
return hr;
}
ID3D11ShaderResourceView* ySRV = nullptr;
hr = device->CreateShaderResourceView(yBuffer, NULL, &ySRV);
if (FAILED(hr))
{
printf("CreateShaderResourceView failed for y buffer with return code %x\n", hr);
return hr;
}
// Create a structured buffer for the "z" vector. This buffer needs to be
// writeable by the GPU, so we can't create it with CPU read/write access.
D3D11_BUFFER_DESC outputBufferDesc;
outputBufferDesc.BindFlags = D3D11_BIND_UNORDERED_ACCESS
| D3D11_BIND_SHADER_RESOURCE;
outputBufferDesc.Usage = D3D11_USAGE_DEFAULT;
outputBufferDesc.CPUAccessFlags = 0;
outputBufferDesc.MiscFlags = D3D11_RESOURCE_MISC_BUFFER_STRUCTURED;
outputBufferDesc.StructureByteStride = sizeof(float);
outputBufferDesc.ByteWidth = sizeof(float) * dimension;
ID3D11Buffer* zBuffer = nullptr;
hr = device->CreateBuffer(&outputBufferDesc, NULL, &zBuffer);
if (FAILED(hr))
{
printf("CreateBuffer failed for z buffer with return code %x\n", hr);
return hr;
}
// Create an unordered access view for the "z" vector.
D3D11_UNORDERED_ACCESS_VIEW_DESC outputUAVDesc;
outputUAVDesc.Buffer.FirstElement = 0;
outputUAVDesc.Buffer.Flags = 0;
outputUAVDesc.Buffer.NumElements = dimension;
outputUAVDesc.Format = DXGI_FORMAT_UNKNOWN;
outputUAVDesc.ViewDimension = D3D11_UAV_DIMENSION_BUFFER;
ID3D11UnorderedAccessView* zBufferUAV;
hr = device->CreateUnorderedAccessView(zBuffer,
&outputUAVDesc, &zBufferUAV);
if (FAILED(hr))
{
printf("CreateUnorderedAccessView failed for z buffer with return code %x\n", hr);
return hr;
}
// Create a staging buffer, which will be used to copy back from zBuffer.
D3D11_BUFFER_DESC stagingBufferDesc;
stagingBufferDesc.BindFlags = 0;
stagingBufferDesc.Usage = D3D11_USAGE_STAGING;
stagingBufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
stagingBufferDesc.MiscFlags = D3D11_RESOURCE_MISC_BUFFER_STRUCTURED;
stagingBufferDesc.StructureByteStride = sizeof(float);
stagingBufferDesc.ByteWidth = sizeof(float) * dimension;
ID3D11Buffer* stagingBuffer;
hr = device->CreateBuffer(&stagingBufferDesc, NULL, &stagingBuffer);
if (FAILED(hr))
{
printf("CreateBuffer failed for staging buffer with return code %x\n", hr);
return hr;
}
// Create a constant buffer (this buffer is used to pass the constant
// value 'a' to the kernel as cbuffer Constants).
D3D11_BUFFER_DESC cbDesc;
cbDesc.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
cbDesc.Usage = D3D11_USAGE_DYNAMIC;
cbDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
cbDesc.MiscFlags = 0;
// Even though the constant buffer only has one float, DX expects
// ByteWidth to be a multiple of 4 floats (i.e., one 128-bit register).
cbDesc.ByteWidth = sizeof(float)*4;
ID3D11Buffer* constantBuffer = nullptr;
hr = device->CreateBuffer( &cbDesc, NULL, &constantBuffer);
if (FAILED(hr))
{
printf("CreateBuffer failed for constant buffer with return code %x\n", hr);
return hr;
}
// Map the constant buffer and set the constant value 'a'.
D3D11_MAPPED_SUBRESOURCE mappedResource;
context->Map(constantBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource);
float* constants = reinterpret_cast<float*>(mappedResource.pData);
constants[0] = a;
constants = nullptr;
context->Unmap(constantBuffer, 0);
// Map the x buffer and copy our data into it.
context->Map(xBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource);
float* xvalues = reinterpret_cast<float*>(mappedResource.pData);
memcpy(xvalues, &x[0], sizeof(float)*x.size());
xvalues = nullptr;
context->Unmap(xBuffer, 0);
// Map the y buffer and copy our data into it.
context->Map(yBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource);
float* yvalues = reinterpret_cast<float*>(mappedResource.pData);
memcpy(yvalues, &y[0], sizeof(float)*y.size());
yvalues = nullptr;
context->Unmap(yBuffer, 0);
// Compile the compute shader into a blob.
ID3DBlob* errorBlob = nullptr;
ID3DBlob* shaderBlob = nullptr;
hr = D3DX11CompileFromFile(L"kernel.hlsl", NULL, NULL, "saxpy", "cs_4_0",
D3D10_SHADER_ENABLE_STRICTNESS, 0, NULL, &shaderBlob, &errorBlob, NULL);
if (FAILED(hr))
{
// Print out the error message if there is one.
if (errorBlob)
{
char const* message = (char*)errorBlob->GetBufferPointer();
printf("kernel.hlsl failed to compile; error message:\n");
printf("%s\n", message);
errorBlob->Release();
}
return hr;
}
// Create a shader object from the compiled blob.
ID3D11ComputeShader* computeShader;
hr = device->CreateComputeShader(shaderBlob->GetBufferPointer(),
shaderBlob->GetBufferSize(), NULL, &computeShader);
if (FAILED(hr))
{
printf("CreateComputeShader failed with return code %x\n", hr);
return hr;
}
// Make the shader active.
context->CSSetShader(computeShader, NULL, 0);
// Attach the z buffer to the output via its unordered access view.
UINT initCounts = 0xFFFFFFFF;
context->CSSetUnorderedAccessViews(0, 1, &zBufferUAV, &initCounts);
// Attach the input buffers via their shader resource views.
context->CSSetShaderResources(0, 1, &xSRV);
context->CSSetShaderResources(1, 1, &ySRV);
// Attach the constant buffer
context->CSSetConstantBuffers(0, 1, &constantBuffer);
// Execute the shader, in 'numGroups' groups of 'groupSize' threads each.
context->Dispatch(numGroups, 1, 1);
// Copy the z buffer to the staging buffer so that we can
// retrieve the data for accesss by the CPU.
context->CopyResource(stagingBuffer, zBuffer);
// Map the staging buffer for reading.
context->Map(stagingBuffer, 0, D3D11_MAP_READ, 0, &mappedResource);
float* zData = reinterpret_cast<float*>(mappedResource.pData);
memcpy(&z[0], zData, sizeof(float)*z.size());
zData = nullptr;
context->Unmap(stagingBuffer, 0);
// Now compare the GPU results against expected values.
bool resultOK = true;
for (size_t i = 0; i < x.size(); ++ i)
{
// NOTE: This comparison assumes the GPU produces *exactly* the
// same result as the CPU. In general, this will not be the case
// with floating-point calculations.
float const expected = a*x[i] + y[i];
if (z[i] != expected)
{
printf("Unexpected result at position %lu: expected %.7e, got %.7e\n",
i, expected, z[i]);
resultOK = false;
}
}
if (!resultOK)
{
printf("GPU results differed from the CPU results.\n");
OutputDebugStringA("GPU results differed from the CPU results.\n");
return 1;
}
printf("GPU output matched the CPU results.\n");
OutputDebugStringA("GPU output matched the CPU results.\n");
// Disconnect everything from the pipeline.
ID3D11UnorderedAccessView* nullUAV = nullptr;
context->CSSetUnorderedAccessViews( 0, 1, &nullUAV, &initCounts);
ID3D11ShaderResourceView* nullSRV = nullptr;
context->CSSetShaderResources(0, 1, &nullSRV);
context->CSSetShaderResources(1, 1, &nullSRV);
ID3D11Buffer* nullBuffer = nullptr;
context->CSSetConstantBuffers(0, 1, &nullBuffer);
// Release resources. Again, note that none of the error checks above
// release resources that have been allocated up to this point, so the
// sample doesn't clean up after itself correctly unless everything succeeds.
computeShader->Release();
shaderBlob->Release();
constantBuffer->Release();
stagingBuffer->Release();
zBufferUAV->Release();
zBuffer->Release();
xSRV->Release();
xBuffer->Release();
ySRV->Release();
yBuffer->Release();
context->Release();
device->Release();
return 0;
}
void RaytracingSecondaryRaysComputeShader::setParameters( ID3D11DeviceContext& deviceContext,
const Texture2DSpecBind< TexBind::UnorderedAccess_ShaderResource, float4 >& rayOriginsTexture,
const Texture2DSpecBind< TexBind::UnorderedAccess_ShaderResource, float4 >& rayDirectionsTexture,
const BlockMesh& mesh,
const float43& worldMatrix,
const float3 boundingBoxMin,
const float3 boundingBoxMax,
const Texture2DSpecBind< TexBind::ShaderResource, unsigned char >& alphaTexture,
const Texture2DSpecBind< TexBind::ShaderResource, uchar4 >& emissiveTexture,
const Texture2DSpecBind< TexBind::ShaderResource, uchar4 >& albedoTexture,
const Texture2DSpecBind< TexBind::ShaderResource, uchar4 >& normalTexture,
const Texture2DSpecBind< TexBind::ShaderResource, unsigned char >& metalnessTexture,
const Texture2DSpecBind< TexBind::ShaderResource, unsigned char >& roughnessTexture,
const Texture2DSpecBind< TexBind::ShaderResource, unsigned char >& indexOfRefractionTexture,
const int outputTextureWidth, const int outputTextureHeight )
{
if ( !m_compiled ) throw std::exception( "RaytracingSecondaryRaysComputeShader::setParameters - Shader hasn't been compiled yet." );
{ // Set input buffers and textures.
const unsigned int resourceCount = 16;
ID3D11ShaderResourceView* resources[ resourceCount ] = {
rayOriginsTexture.getShaderResourceView(),
rayDirectionsTexture.getShaderResourceView(),
mesh.getVertexBufferResource(),
mesh.getNormalBufferResource(),
mesh.getTangentBufferResource(),
!mesh.getTexcoordBufferResources().empty() ? mesh.getTexcoordBufferResources().front() : nullptr,
mesh.getTriangleBufferResource(),
mesh.getBvhTreeBufferNodesShaderResourceView().Get(),
mesh.getBvhTreeBufferNodesExtentsShaderResourceView().Get(),
//mesh.getBvhTreeBufferTrianglesShaderResourceView().Get(),
alphaTexture.getShaderResourceView(),
emissiveTexture.getShaderResourceView(),
albedoTexture.getShaderResourceView(),
normalTexture.getShaderResourceView(),
metalnessTexture.getShaderResourceView(),
roughnessTexture.getShaderResourceView(),
indexOfRefractionTexture.getShaderResourceView()
};
deviceContext.CSSetShaderResources( 0, resourceCount, resources );
}
{ // Set constant buffer.
D3D11_MAPPED_SUBRESOURCE mappedResource;
ConstantBuffer* dataPtr;
HRESULT result = deviceContext.Map( m_constantInputBuffer.Get(), 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource );
if ( result < 0 ) throw std::exception( "RaytracingSecondaryRaysComputeShader::setParameters - mapping constant buffer to CPU memory failed." );
dataPtr = (ConstantBuffer*)mappedResource.pData;
dataPtr->localToWorldMatrix = float44( worldMatrix ).getTranspose(); // Transpose from row-major to column-major to fit each column in one register.
dataPtr->worldToLocalMatrix = float44( worldMatrix.getScaleOrientationTranslationInverse() ).getTranspose(); // Transpose from row-major to column-major to fit each column in one register.
dataPtr->boundingBoxMin = boundingBoxMin;
dataPtr->boundingBoxMax = boundingBoxMax;
dataPtr->outputTextureSize = float2( (float)outputTextureWidth, (float)outputTextureHeight );
// Padding.
dataPtr->pad1 = 0.0f;
dataPtr->pad2 = 0.0f;
deviceContext.Unmap( m_constantInputBuffer.Get(), 0 );
deviceContext.CSSetConstantBuffers( 0, 1, m_constantInputBuffer.GetAddressOf() );
}
{ // Set texture sampler.
deviceContext.CSSetSamplers( 0, 1, m_samplerState.GetAddressOf() );
}
}
