//--------------------------------------------------------------------------------------
// Name: Initialize()
// Desc: Initialize the OpenCL implementation of the cloth simulation
//--------------------------------------------------------------------------------------
BOOL CClothSimCL::Initialize( cl_context context, cl_device_id device )
{
// Call the base class first
if( !CClothSim::Initialize() )
return FALSE;
// Generate VBO for previous position
glGenBuffers( 1, &m_hPrevPositionVBO );
glBindBuffer( GL_ARRAY_BUFFER, m_hPrevPositionVBO );
glBufferData( GL_ARRAY_BUFFER, m_uiNumVerts * 4 * sizeof(float), NULL, GL_DYNAMIC_DRAW );
glBufferSubData( GL_ARRAY_BUFFER, 0, m_uiNumVerts * 4 * sizeof(float), m_pVerts );
glBindBuffer( GL_ARRAY_BUFFER, 0 );
if( !InitKernels( context, device ) )
return FALSE;
// Create OpenCL memory objects for the VBOs
UINT32 vbos[NUM_VBOS] =
{
m_hPositionVBO,
m_hPrevPositionVBO,
m_hNormalVBO,
m_hTangentVBO,
m_hBitangentVBO,
m_hTextureVBO,
m_hBackNormalVBO,
m_hBackTangentVBO,
m_hBackBitangentVBO
};
cl_int errNum = 0;
for( INT32 i = 0; i < NUM_VBOS; i++ )
{
m_vboMem[i] = clCreateFromGLBuffer( context, CL_MEM_READ_WRITE, vbos[i], &errNum );
if( errNum != CL_SUCCESS )
{
FrmLogMessage( "Error creating OpenCL memory object from GL VBO." );
return FALSE;
}
}
// Initialize the base distances memory object
if( !InitConstraintsBaseDists( context ) )
return FALSE;
m_vertsCopyMem = clCreateBuffer( context, CL_MEM_READ_WRITE, sizeof(cl_float4) * m_uiNumVerts, NULL, &errNum);
if( errNum != CL_SUCCESS )
{
FrmLogMessage( "Error creating OpenCL memory object." );
return FALSE;
}
return TRUE;
}
result MultiFrame::Init(
const int &device_id,
const int &temporal_radius,
const int &width,
const int &height,
const int &src_pitch,
const int &dst_pitch,
const float &h,
const int &sample_expand,
const int &linear,
const int &correction,
const int &balanced) {
if (device_id >= g_device_count) return FILTER_ERROR;
result status = FILTER_OK;
device_id_ = device_id;
temporal_radius_ = temporal_radius;
width_ = width;
height_ = height;
src_pitch_ = src_pitch;
dst_pitch_ = dst_pitch;
region_width_ = width;
region_height_ = 8;
h_ = 1.f/h;
cq_ = g_devices[device_id_].cq();
if (width_ == 0 || height_ == 0 || src_pitch_ == 0 || dst_pitch_ == 0 || h == 0 )
return FILTER_INVALID_PARAMETER;
alpha_set_size_ = GetAlphaSetSize(temporal_radius, sample_expand);
status = InitBuffers(sample_expand);
if (status != FILTER_OK) return status;
status = InitKernels(sample_expand, linear, correction, balanced);
if (status != FILTER_OK) return status;
status = InitFrames();
return status;
}
void PathOCLRenderThread::InitRender() {
Scene *scene = renderEngine->renderConfig->scene;
cl::Context &oclContext = intersectionDevice->GetOpenCLContext();
cl::Device &oclDevice = intersectionDevice->GetOpenCLDevice();
const OpenCLDeviceDescription *deviceDesc = intersectionDevice->GetDeviceDesc();
double tStart, tEnd;
//--------------------------------------------------------------------------
// FrameBuffer definition
//--------------------------------------------------------------------------
InitFrameBuffer();
//--------------------------------------------------------------------------
// Camera definition
//--------------------------------------------------------------------------
InitCamera();
//--------------------------------------------------------------------------
// Scene geometry
//--------------------------------------------------------------------------
InitGeometry();
//--------------------------------------------------------------------------
// Translate material definitions
//--------------------------------------------------------------------------
InitMaterials();
//--------------------------------------------------------------------------
// Translate area lights
//--------------------------------------------------------------------------
InitAreaLights();
//--------------------------------------------------------------------------
// Check if there is an infinite light source
//--------------------------------------------------------------------------
InitInfiniteLight();
//--------------------------------------------------------------------------
// Check if there is an sun light source
//--------------------------------------------------------------------------
InitSunLight();
//--------------------------------------------------------------------------
// Check if there is an sky light source
//--------------------------------------------------------------------------
InitSkyLight();
const unsigned int areaLightCount = renderEngine->compiledScene->areaLights.size();
if (!skyLightBuff && !sunLightBuff && !infiniteLightBuff && (areaLightCount == 0))
throw runtime_error("There are no light sources supported by PathOCL in the scene");
//--------------------------------------------------------------------------
// Translate mesh texture maps
//--------------------------------------------------------------------------
InitTextureMaps();
//--------------------------------------------------------------------------
// Allocate Ray/RayHit buffers
//--------------------------------------------------------------------------
const unsigned int taskCount = renderEngine->taskCount;
tStart = WallClockTime();
LM_LOG_ENGINE("[PathOCLRenderThread::" << threadIndex << "] Ray buffer size: " << (sizeof(Ray) * taskCount / 1024) << "Kbytes");
raysBuff = new cl::Buffer(oclContext,
CL_MEM_READ_WRITE,
sizeof(Ray) * taskCount);
deviceDesc->AllocMemory(raysBuff->getInfo<CL_MEM_SIZE>());
LM_LOG_ENGINE("[PathOCLRenderThread::" << threadIndex << "] RayHit buffer size: " << (sizeof(RayHit) * taskCount / 1024) << "Kbytes");
hitsBuff = new cl::Buffer(oclContext,
CL_MEM_READ_WRITE,
sizeof(RayHit) * taskCount);
deviceDesc->AllocMemory(hitsBuff->getInfo<CL_MEM_SIZE>());
tEnd = WallClockTime();
LM_LOG_ENGINE("[PathOCLRenderThread::" << threadIndex << "] OpenCL buffer creation time: " << int((tEnd - tStart) * 1000.0) << "ms");
//--------------------------------------------------------------------------
// Allocate GPU task buffers
//--------------------------------------------------------------------------
// TODO: clenup all this mess
const size_t gpuTaksSizePart1 =
// Seed size
sizeof(PathOCL::Seed);
const size_t uDataEyePathVertexSize =
// IDX_SCREEN_X, IDX_SCREEN_Y
sizeof(float) * 2 +
// IDX_DOF_X, IDX_DOF_Y
((scene->camera->lensRadius > 0.f) ? (sizeof(float) * 2) : 0);
const size_t uDataPerPathVertexSize =
// IDX_TEX_ALPHA,
((texMapAlphaBuff) ? sizeof(float) : 0) +
// IDX_BSDF_X, IDX_BSDF_Y, IDX_BSDF_Z
sizeof(float) * 3 +
// IDX_DIRECTLIGHT_X, IDX_DIRECTLIGHT_Y, IDX_DIRECTLIGHT_Z
(((areaLightCount > 0) || sunLightBuff) ? (sizeof(float) * 3) : 0) +
// IDX_RR
sizeof(float);
const size_t uDataSize = (renderEngine->sampler->type == PathOCL::INLINED_RANDOM) ?
// Only IDX_SCREEN_X, IDX_SCREEN_Y
(sizeof(float) * 2) :
((renderEngine->sampler->type == PathOCL::METROPOLIS) ?
(sizeof(float) * 2 + sizeof(unsigned int) * 5 + sizeof(Spectrum) + 2 * (uDataEyePathVertexSize + uDataPerPathVertexSize * renderEngine->maxPathDepth)) :
(uDataEyePathVertexSize + uDataPerPathVertexSize * renderEngine->maxPathDepth));
size_t sampleSize =
// uint pixelIndex;
((renderEngine->sampler->type == PathOCL::METROPOLIS) ? 0 : sizeof(unsigned int)) +
uDataSize +
// Spectrum radiance;
sizeof(Spectrum);
stratifiedDataSize = 0;
if (renderEngine->sampler->type == PathOCL::STRATIFIED) {
PathOCL::StratifiedSampler *s = (PathOCL::StratifiedSampler *)renderEngine->sampler;
stratifiedDataSize =
// stratifiedScreen2D
sizeof(float) * s->xSamples * s->ySamples * 2 +
// stratifiedDof2D
((scene->camera->lensRadius > 0.f) ? (sizeof(float) * s->xSamples * s->ySamples * 2) : 0) +
// stratifiedAlpha1D
((texMapAlphaBuff) ? (sizeof(float) * s->xSamples) : 0) +
// stratifiedBSDF2D
sizeof(float) * s->xSamples * s->ySamples * 2 +
// stratifiedBSDF1D
sizeof(float) * s->xSamples +
// stratifiedLight2D
// stratifiedLight1D
(((areaLightCount > 0) || sunLightBuff) ? (sizeof(float) * s->xSamples * s->ySamples * 2 + sizeof(float) * s->xSamples) : 0);
sampleSize += stratifiedDataSize;
}
const size_t gpuTaksSizePart2 = sampleSize;
const size_t gpuTaksSizePart3 =
// PathState size
((((areaLightCount > 0) || sunLightBuff) ? sizeof(PathOCL::PathStateDL) : sizeof(PathOCL::PathState)) +
//unsigned int diffuseVertexCount;
((renderEngine->maxDiffusePathVertexCount < renderEngine->maxPathDepth) ? sizeof(unsigned int) : 0));
const size_t gpuTaksSize = gpuTaksSizePart1 + gpuTaksSizePart2 + gpuTaksSizePart3;
LM_LOG_ENGINE("[PathOCLRenderThread::" << threadIndex << "] Size of a GPUTask: " << gpuTaksSize <<
"bytes (" << gpuTaksSizePart1 << " + " << gpuTaksSizePart2 << " + " << gpuTaksSizePart3 << ")");
LM_LOG_ENGINE("[PathOCLRenderThread::" << threadIndex << "] Tasks buffer size: " << (gpuTaksSize * taskCount / 1024) << "Kbytes");
// Check if the task buffer is too big
if (oclDevice.getInfo<CL_DEVICE_MAX_MEM_ALLOC_SIZE>() < gpuTaksSize * taskCount) {
stringstream ss;
ss << "The GPUTask buffer is too big for this device (i.e. CL_DEVICE_MAX_MEM_ALLOC_SIZE=" <<
oclDevice.getInfo<CL_DEVICE_MAX_MEM_ALLOC_SIZE>() <<
"): try to reduce opencl.task.count and/or path.maxdepth and/or to change Sampler";
throw std::runtime_error(ss.str());
}
tasksBuff = new cl::Buffer(oclContext,
CL_MEM_READ_WRITE,
gpuTaksSize * taskCount);
deviceDesc->AllocMemory(tasksBuff->getInfo<CL_MEM_SIZE>());
//--------------------------------------------------------------------------
// Allocate GPU task statistic buffers
//--------------------------------------------------------------------------
LM_LOG_ENGINE("[PathOCLRenderThread::" << threadIndex << "] Task Stats buffer size: " << (sizeof(PathOCL::GPUTaskStats) * taskCount / 1024) << "Kbytes");
taskStatsBuff = new cl::Buffer(oclContext,
CL_MEM_READ_WRITE,
sizeof(PathOCL::GPUTaskStats) * taskCount);
deviceDesc->AllocMemory(taskStatsBuff->getInfo<CL_MEM_SIZE>());
//--------------------------------------------------------------------------
// Compile kernels
//--------------------------------------------------------------------------
InitKernels();
//--------------------------------------------------------------------------
// Initialize
//--------------------------------------------------------------------------
// Set kernel arguments
SetKernelArgs();
cl::CommandQueue &oclQueue = intersectionDevice->GetOpenCLQueue();
// Clear the frame buffer
oclQueue.enqueueNDRangeKernel(*initFBKernel, cl::NullRange,
cl::NDRange(RoundUp<unsigned int>(frameBufferPixelCount, initFBWorkGroupSize)),
cl::NDRange(initFBWorkGroupSize));
// Initialize the tasks buffer
oclQueue.enqueueNDRangeKernel(*initKernel, cl::NullRange,
cl::NDRange(taskCount), cl::NDRange(initWorkGroupSize));
oclQueue.finish();
// Reset statistics in order to be more accurate
intersectionDevice->ResetPerformaceStats();
}
void PathOCLRenderThread::EndEdit(const EditActionList &editActions) {
//--------------------------------------------------------------------------
// Update OpenCL buffers
//--------------------------------------------------------------------------
if (editActions.Has(FILM_EDIT)) {
// Resize the Framebuffer
InitFrameBuffer();
}
if (editActions.Has(CAMERA_EDIT)) {
// Update Camera
InitCamera();
}
if (editActions.Has(GEOMETRY_EDIT)) {
// Update Scene Geometry
InitGeometry();
}
if (editActions.Has(MATERIALS_EDIT) || editActions.Has(MATERIAL_TYPES_EDIT)) {
// Update Scene Materials
InitMaterials();
}
if (editActions.Has(AREALIGHTS_EDIT)) {
// Update Scene Area Lights
InitAreaLights();
}
if (editActions.Has(INFINITELIGHT_EDIT)) {
// Update Scene Infinite Light
InitInfiniteLight();
}
if (editActions.Has(SUNLIGHT_EDIT)) {
// Update Scene Sun Light
InitSunLight();
}
if (editActions.Has(SKYLIGHT_EDIT)) {
// Update Scene Sun Light
InitSkyLight();
}
//--------------------------------------------------------------------------
// Recompile Kernels if required
//--------------------------------------------------------------------------
if (editActions.Has(FILM_EDIT) || editActions.Has(MATERIAL_TYPES_EDIT))
InitKernels();
if (editActions.Size() > 0)
SetKernelArgs();
//--------------------------------------------------------------------------
// Execute initialization kernels
//--------------------------------------------------------------------------
if (editActions.Size() > 0) {
cl::CommandQueue &oclQueue = intersectionDevice->GetOpenCLQueue();
// Clear the frame buffer
oclQueue.enqueueNDRangeKernel(*initFBKernel, cl::NullRange,
cl::NDRange(RoundUp<unsigned int>(frameBufferPixelCount, initFBWorkGroupSize)),
cl::NDRange(initFBWorkGroupSize));
// Initialize the tasks buffer
oclQueue.enqueueNDRangeKernel(*initKernel, cl::NullRange,
cl::NDRange(renderEngine->taskCount), cl::NDRange(initWorkGroupSize));
}
// Reset statistics in order to be more accurate
intersectionDevice->ResetPerformaceStats();
StartRenderThread();
}
