mitchellhansen
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conways-game-of-life-gpu
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Drawing works now, but OpenCL will only run two cicles before stopping output. Something to do with the buffers, kernel, or the command queue I think

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master
MitchellHansen 9 years ago
parent 7d1cc67143
commit 6d439eef86
1 changed files with 22 additions and 20 deletions
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42
Conway_OpenCL/HelloWorld.cpp
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@ -178,6 +178,18 @@ int main(int argc, char* argv[])
int frame_count = 0; int frame_count = 0;
int err = 0;
cl_mem workerCountBuffer = clCreateBuffer(context, CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR, sizeof(int), &WORKER_SIZE, &err);
cl_mem gridWidthBuffer = clCreateBuffer(context, CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR, sizeof(int), &GRID_WIDTH, &err);
cl_mem gridHeightBuffer = clCreateBuffer(context, CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR, sizeof(int), &GRID_HEIGHT, &err);
status = clSetKernelArg(kernel, 1, sizeof(cl_mem), (void *)&workerCountBuffer);
status = clSetKernelArg(kernel, 2, sizeof(cl_mem), (void *)&gridWidthBuffer);
status = clSetKernelArg(kernel, 3, sizeof(cl_mem), (void *)&gridHeightBuffer);
// ===================================== Loop ================================================================== // ===================================== Loop ==================================================================
while (window.isOpen()) { while (window.isOpen()) {
@ -202,16 +214,11 @@ int main(int argc, char* argv[])
// ======================================= OpenCL Shtuff ============================================= // ======================================= OpenCL Shtuff =============================================
int err = 0; // Implicit dead node color
cl_mem inputBuffer = clCreateBuffer(context, CL_MEM_READ_WRITE | CL_MEM_COPY_HOST_PTR, GRID_WIDTH * GRID_HEIGHT * 2 * sizeof(char), (void*)grid, &err); window.clear(sf::Color(49, 68, 72));
cl_mem workerCountBuffer = clCreateBuffer(context, CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR, sizeof(int), &WORKER_SIZE, &err);
cl_mem gridWidthBuffer = clCreateBuffer(context, CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR, sizeof(int), &GRID_WIDTH, &err);
cl_mem gridHeightBuffer = clCreateBuffer(context, CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR, sizeof(int), &GRID_HEIGHT, &err);
cl_mem inputBuffer = clCreateBuffer(context, CL_MEM_READ_WRITE | CL_MEM_COPY_HOST_PTR, GRID_WIDTH * GRID_HEIGHT * 2 * sizeof(char), (void*)grid, &err);
status = clSetKernelArg(kernel, 0, sizeof(cl_mem), (void *)&inputBuffer); status = clSetKernelArg(kernel, 0, sizeof(cl_mem), (void *)&inputBuffer);
status = clSetKernelArg(kernel, 1, sizeof(cl_mem), (void *)&workerCountBuffer);
status = clSetKernelArg(kernel, 2, sizeof(cl_mem), (void *)&gridWidthBuffer);
status = clSetKernelArg(kernel, 3, sizeof(cl_mem), (void *)&gridHeightBuffer);
// One work item per group, don't really know if this impacts performance // One work item per group, don't really know if this impacts performance
size_t global_work_size[1] = { 1 }; size_t global_work_size[1] = { 1 };
@ -220,14 +227,11 @@ int main(int argc, char* argv[])
status = clEnqueueNDRangeKernel(commandQueue, kernel, 1, NULL, global_work_size, NULL, 0, NULL, NULL); status = clEnqueueNDRangeKernel(commandQueue, kernel, 1, NULL, global_work_size, NULL, 0, NULL, NULL);
// Get output, put back into grid // Get output, put back into grid
cl_mem outputBuffer = clCreateBuffer(context, CL_MEM_WRITE_ONLY, GRID_WIDTH * GRID_HEIGHT * 2 * sizeof(char), NULL, NULL); //cl_mem outputBuffer = clCreateBuffer(context, CL_MEM_WRITE_ONLY, GRID_WIDTH * GRID_HEIGHT * 2 * sizeof(char), grid, NULL);
status = clEnqueueReadBuffer(commandQueue, outputBuffer, CL_TRUE, 0, GRID_WIDTH * GRID_HEIGHT * 2 * sizeof(char), grid, 0, NULL, NULL); status = clEnqueueReadBuffer(commandQueue, inputBuffer, CL_TRUE, 0, GRID_WIDTH * GRID_HEIGHT * 2 * sizeof(char), grid, 0, NULL, NULL);
// Temporary // Temporary
status = clReleaseMemObject(inputBuffer); status = clReleaseMemObject(inputBuffer);
status = clReleaseMemObject(workerCountBuffer);
status = clReleaseMemObject(gridWidthBuffer);
status = clReleaseMemObject(gridHeightBuffer);
// Swap status's // Swap status's
for (int i = 0; i < GRID_WIDTH * GRID_HEIGHT * 2; i += 2) { for (int i = 0; i < GRID_WIDTH * GRID_HEIGHT * 2; i += 2) {
@ -235,23 +239,21 @@ int main(int argc, char* argv[])
} }
for (int i = 0; i < GRID_WIDTH * GRID_HEIGHT * 2; i += 2) { for (int i = 0; i < GRID_WIDTH * GRID_HEIGHT * 2; i += 2) {
if (!grid[i]) { if (grid[i] == 1) {
live_node.setPosition(sf::Vector2f((i % GRID_WIDTH) * (i / GRID_WIDTH), i / GRID_WIDTH)); live_node.setPosition(sf::Vector2f(((i / 2) % GRID_WIDTH), (i / 2) / GRID_WIDTH));
window.draw(live_node); window.draw(live_node);
} }
} }
// Implicit dead node color
window.clear(sf::Color(49, 68, 72));
frame_count++; frame_count++;
window.display(); window.display();
} }
status = clReleaseMemObject(workerCountBuffer);
status = clReleaseMemObject(gridWidthBuffer);
status = clReleaseMemObject(gridHeightBuffer);
/*Step 12: Clean the resources.*/ /*Step 12: Clean the resources.*/
status = clReleaseKernel(kernel); //Release kernel. status = clReleaseKernel(kernel); //Release kernel.

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