mitchellhansen/conways-game-of-life-gpu
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Another roadblock. After one iteration the neighbor count gets corrupted and starts spitting out random negative values.

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MitchellHansen
2016-01-10 16:48:26 -08:00
parent 1b379e095e
commit ed04d13d7b
3 changed files with 41 additions and 28 deletions
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41
Conway_OpenCL/Conway.hpp
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@@ -242,7 +242,7 @@ int main(int argc, char* argv[])
// Setup the rng
std::mt19937 rng(time(NULL));
std::uniform_int_distribution<int> rgen(0, 4); // 25% chance
std::uniform_int_distribution<int> rgen(0, 2); // 25% chance
// Init the grids
unsigned char* node_grid = new unsigned char[GRID_WIDTH * GRID_HEIGHT];
@@ -262,10 +262,20 @@ int main(int argc, char* argv[])
for (int i = 0; i < GRID_WIDTH * GRID_HEIGHT * 4; i += 4) {
pixel_array[i] = i % 255; // R?
pixel_array[i + 1] = 70; // G?
pixel_array[i + 2] = 100; // B?
pixel_array[i + 3] = 100; // A?
if (node_grid[i / 4] == 1) {
pixel_array[i] = 0; // R?
pixel_array[i + 1] = 0; // G?
pixel_array[i + 2] = 0; // B?
pixel_array[i + 3] = 0; // A?
}
else {
pixel_array[i] = 0; // R?
pixel_array[i + 1] = 0; // G?
pixel_array[i + 2] = 0; // B?
pixel_array[i + 3] = 0; // A?
}
}
GLuint texture;
@@ -302,9 +312,9 @@ int main(int argc, char* argv[])
int err = 0;
cl_mem frontWriteBuffer = clCreateFromGLTexture(context , CL_MEM_WRITE_ONLY, GL_TEXTURE_2D, 0, texture, &err);
cl_mem frontReadBuffer = clCreateFromGLTexture(context, CL_MEM_READ_ONLY, GL_TEXTURE_2D, 0, texture, &err);
cl_mem backBuffer = clCreateBuffer(context, CL_MEM_READ_WRITE | CL_MEM_COPY_HOST_PTR, sizeof(int), (void*)node_grid, &err);
cl_mem frontWriteBuffer = clCreateFromGLTexture(context , CL_MEM_READ_WRITE, GL_TEXTURE_2D, 0, texture, &err);
//cl_mem frontReadBuffer = clCreateFromGLTexture(context, CL_MEM_READ_ONLY, GL_TEXTURE_2D, 0, texture, &err);
cl_mem backBuffer = clCreateBuffer(context, CL_MEM_READ_WRITE | CL_MEM_COPY_HOST_PTR, GRID_WIDTH * GRID_HEIGHT * sizeof(char), (void*)node_grid, &err);
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);
@@ -317,7 +327,7 @@ int main(int argc, char* argv[])
status = clSetKernelArg(compute_kernel, 3, sizeof(cl_mem), (void *)&gridWidthBuffer);
status = clSetKernelArg(compute_kernel, 4, sizeof(cl_mem), (void *)&gridHeightBuffer);
status = clSetKernelArg(align_kernel, 0, sizeof(cl_mem), (void *)&frontReadBuffer);
status = clSetKernelArg(align_kernel, 0, sizeof(cl_mem), (void *)&frontWriteBuffer);
status = clSetKernelArg(align_kernel, 1, sizeof(cl_mem), (void *)&backBuffer);
status = clSetKernelArg(align_kernel, 2, sizeof(cl_mem), (void *)&workerCountBuffer);
status = clSetKernelArg(align_kernel, 3, sizeof(cl_mem), (void *)&gridWidthBuffer);
@@ -336,14 +346,15 @@ int main(int argc, char* argv[])
// Work size, for each y line
size_t global_work_size[1] = { WORKER_SIZE };
status = clEnqueueAcquireGLObjects(commandQueue, 1, &frontReadBuffer, 0, 0, 0);
status = clEnqueueAcquireGLObjects(commandQueue, 1, &frontWriteBuffer, 0, 0, 0);
//status = clEnqueueAcquireGLObjects(commandQueue, 1, &frontReadBuffer, 0, 0, 0);
//status = clEnqueueAcquireGLObjects(commandQueue, 1, &frontWriteBuffer, 0, 0, 0);
status = clEnqueueNDRangeKernel(commandQueue, compute_kernel, 1, NULL, global_work_size, NULL, 0, NULL, NULL);
clFinish(commandQueue);
status = clEnqueueNDRangeKernel(commandQueue, align_kernel, 1, NULL, global_work_size, NULL, 0, NULL, NULL);
status = clEnqueueReleaseGLObjects(commandQueue, 1, &frontReadBuffer, 0, NULL, NULL);
status = clEnqueueReleaseGLObjects(commandQueue, 1, &frontWriteBuffer, 0, NULL, NULL);
//status = clEnqueueReleaseGLObjects(commandQueue, 1, &frontReadBuffer, 0, NULL, NULL);
//status = clEnqueueReleaseGLObjects(commandQueue, 1, &frontWriteBuffer, 0, NULL, NULL);
clFinish(commandQueue);
@@ -366,14 +377,12 @@ int main(int argc, char* argv[])
// Render
glfwSwapBuffers(gl_window);
}
glfwTerminate();
// Release the buffers
status = clReleaseMemObject(frontReadBuffer);
// status = clReleaseMemObject(frontReadBuffer);
status = clReleaseMemObject(workerCountBuffer);
status = clReleaseMemObject(gridWidthBuffer);
status = clReleaseMemObject(gridHeightBuffer);