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/*
* Copyright 2011, Blender Foundation.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Contributor:
* Jeroen Bakker
* Monique Dewanchand
*/
#include "COM_OpenCLDevice.h"
#include "COM_WorkScheduler.h"
typedef enum COM_VendorID {NVIDIA = 0x10DE, AMD = 0x1002} COM_VendorID;
OpenCLDevice::OpenCLDevice(cl_context context, cl_device_id device, cl_program program, cl_int vendorId)
{
this->m_device = device;
this->m_context = context;
this->m_program = program;
this->m_queue = NULL;
this->m_vendorID = vendorId;
}
bool OpenCLDevice::initialize()
{
cl_int error;
this->m_queue = clCreateCommandQueue(this->m_context, this->m_device, 0, &error);
return false;
}
void OpenCLDevice::deinitialize()
{
if (this->m_queue) {
clReleaseCommandQueue(this->m_queue);
}
}
void OpenCLDevice::execute(WorkPackage *work)
{
const unsigned int chunkNumber = work->getChunkNumber();
ExecutionGroup *executionGroup = work->getExecutionGroup();
rcti rect;
executionGroup->determineChunkRect(&rect, chunkNumber);
MemoryBuffer **inputBuffers = executionGroup->getInputBuffersOpenCL(chunkNumber);
MemoryBuffer *outputBuffer = executionGroup->allocateOutputBuffer(chunkNumber, &rect);
executionGroup->getOutputOperation()->executeOpenCLRegion(this, &rect,
chunkNumber, inputBuffers, outputBuffer);
delete outputBuffer;
executionGroup->finalizeChunkExecution(chunkNumber, inputBuffers);
}
cl_mem OpenCLDevice::COM_clAttachMemoryBufferToKernelParameter(cl_kernel kernel, int parameterIndex, int offsetIndex,
list<cl_mem> *cleanup, MemoryBuffer **inputMemoryBuffers,
SocketReader *reader)
{
return COM_clAttachMemoryBufferToKernelParameter(kernel, parameterIndex, offsetIndex, cleanup, inputMemoryBuffers, (ReadBufferOperation *)reader);
}
cl_mem OpenCLDevice::COM_clAttachMemoryBufferToKernelParameter(cl_kernel kernel, int parameterIndex, int offsetIndex,
list<cl_mem> *cleanup, MemoryBuffer **inputMemoryBuffers,
ReadBufferOperation *reader)
{
cl_int error;
MemoryBuffer *result = reader->getInputMemoryBuffer(inputMemoryBuffers);
const cl_image_format imageFormat = {
CL_RGBA,
CL_FLOAT
};
cl_mem clBuffer = clCreateImage2D(this->m_context, CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR, &imageFormat, result->getWidth(),
result->getHeight(), 0, result->getBuffer(), &error);
if (error != CL_SUCCESS) { printf("CLERROR[%d]: %s\n", error, clewErrorString(error)); }
if (error == CL_SUCCESS) cleanup->push_back(clBuffer);
error = clSetKernelArg(kernel, parameterIndex, sizeof(cl_mem), &clBuffer);
if (error != CL_SUCCESS) { printf("CLERROR[%d]: %s\n", error, clewErrorString(error)); }
COM_clAttachMemoryBufferOffsetToKernelParameter(kernel, offsetIndex, result);
return clBuffer;
}
void OpenCLDevice::COM_clAttachMemoryBufferOffsetToKernelParameter(cl_kernel kernel, int offsetIndex, MemoryBuffer *memoryBuffer)
{
if (offsetIndex != -1) {
cl_int error;
rcti *rect = memoryBuffer->getRect();
cl_int2 offset = {rect->xmin, rect->ymin};
error = clSetKernelArg(kernel, offsetIndex, sizeof(cl_int2), &offset);
if (error != CL_SUCCESS) { printf("CLERROR[%d]: %s\n", error, clewErrorString(error)); }
}
}
void OpenCLDevice::COM_clAttachSizeToKernelParameter(cl_kernel kernel, int offsetIndex, NodeOperation *operation)
{
if (offsetIndex != -1) {
cl_int error;
cl_int2 offset = {(cl_int)operation->getWidth(), (cl_int)operation->getHeight()};
error = clSetKernelArg(kernel, offsetIndex, sizeof(cl_int2), &offset);
if (error != CL_SUCCESS) { printf("CLERROR[%d]: %s\n", error, clewErrorString(error)); }
}
}
void OpenCLDevice::COM_clAttachOutputMemoryBufferToKernelParameter(cl_kernel kernel, int parameterIndex, cl_mem clOutputMemoryBuffer)
{
cl_int error;
error = clSetKernelArg(kernel, parameterIndex, sizeof(cl_mem), &clOutputMemoryBuffer);
if (error != CL_SUCCESS) { printf("CLERROR[%d]: %s\n", error, clewErrorString(error)); }
}
void OpenCLDevice::COM_clEnqueueRange(cl_kernel kernel, MemoryBuffer *outputMemoryBuffer)
{
cl_int error;
const size_t size[] = {(size_t)outputMemoryBuffer->getWidth(), (size_t)outputMemoryBuffer->getHeight()};
error = clEnqueueNDRangeKernel(this->m_queue, kernel, 2, NULL, size, 0, 0, 0, NULL);
if (error != CL_SUCCESS) { printf("CLERROR[%d]: %s\n", error, clewErrorString(error)); }
}
void OpenCLDevice::COM_clEnqueueRange(cl_kernel kernel, MemoryBuffer *outputMemoryBuffer, int offsetIndex, NodeOperation *operation)
{
cl_int error;
const int width = outputMemoryBuffer->getWidth();
const int height = outputMemoryBuffer->getHeight();
int offsetx;
int offsety;
int localSize = 1024;
size_t size[2];
cl_int2 offset;
if (this->m_vendorID == NVIDIA) {
localSize = 32;
}
bool breaked = false;
for (offsety = 0; offsety < height && (!breaked); offsety += localSize) {
offset[1] = offsety;
if (offsety + localSize < height) {
size[1] = localSize;
}
else {
size[1] = height - offsety;
}
for (offsetx = 0; offsetx < width && (!breaked); offsetx += localSize) {
if (offsetx + localSize < width) {
size[0] = localSize;
}
else {
size[0] = width - offsetx;
}
offset[0] = offsetx;
error = clSetKernelArg(kernel, offsetIndex, sizeof(cl_int2), &offset);
if (error != CL_SUCCESS) { printf("CLERROR[%d]: %s\n", error, clewErrorString(error)); }
error = clEnqueueNDRangeKernel(this->m_queue, kernel, 2, NULL, size, 0, 0, 0, NULL);
if (error != CL_SUCCESS) { printf("CLERROR[%d]: %s\n", error, clewErrorString(error)); }
clFlush(this->m_queue);
if (operation->isBreaked()) {
breaked = false;
}
}
}
}
cl_kernel OpenCLDevice::COM_clCreateKernel(const char *kernelname, list<cl_kernel> *clKernelsToCleanUp)
{
cl_int error;
cl_kernel kernel = clCreateKernel(this->m_program, kernelname, &error);
if (error != CL_SUCCESS) { printf("CLERROR[%d]: %s\n", error, clewErrorString(error)); }
else {
if (clKernelsToCleanUp) clKernelsToCleanUp->push_back(kernel);
}
return kernel;
}
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