133 lines
3.5 KiB
C++
133 lines
3.5 KiB
C++
// Copyright (C) 2003 Dolphin Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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// TODO: Make a more centralized version of this (for now every plugin that will use it will create its own context, which is weird). An object maybe?
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#include "OpenCL.h"
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#include "Common.h"
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namespace OpenCL {
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#if defined(HAVE_OPENCL) && HAVE_OPENCL
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cl_device_id device_id = NULL;
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cl_context g_context = NULL;
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cl_command_queue g_cmdq = NULL;
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#endif
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bool Initialize() {
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#if defined(HAVE_OPENCL) && HAVE_OPENCL
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if(g_context)
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return false;
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int err; // error code returned from api calls
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// Connect to a compute device
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//
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int gpu = 1; // I think we should use CL_DEVICE_TYPE_ALL
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err = clGetDeviceIDs(NULL, gpu ? CL_DEVICE_TYPE_GPU : CL_DEVICE_TYPE_CPU, 1, &device_id, NULL);
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if (err != CL_SUCCESS)
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{
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PanicAlert("Error: Failed to create a device group!\n");
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return false;
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}
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// Create a compute context
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//
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g_context = clCreateContext(0, 1, &device_id, NULL, NULL, &err);
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if (!g_context)
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{
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PanicAlert("Error: Failed to create a compute context!\n");
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return false;
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}
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// Create a command commands
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//
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g_cmdq = clCreateCommandQueue(g_context, device_id, 0, &err);
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if (!g_cmdq)
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{
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PanicAlert("Error: Failed to create a command commands!\n");
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return false;
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}
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printf("Initialized OpenCL fine!\n");
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return true;
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#else
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return false;
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#endif
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}
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#if defined(HAVE_OPENCL) && HAVE_OPENCL
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cl_context GetInstance() {
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return g_context;
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}
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cl_command_queue GetCommandQueue() {
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return g_cmdq;
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}
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cl_program CompileProgram(const char *Kernel) {
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int err;
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cl_program program;
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program = clCreateProgramWithSource(OpenCL::g_context, 1, (const char **) & Kernel, NULL, &err);
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if (!program)
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{
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printf("Error: Failed to create compute program!\n");
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return NULL;
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}
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// Build the program executable
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//
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err = clBuildProgram(program , 0, NULL, NULL, NULL, NULL);
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if (err != CL_SUCCESS)
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{
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size_t len;
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char buffer[2048];
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printf("Error: Failed to build program executable!\n");
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clGetProgramBuildInfo(program , OpenCL::device_id, CL_PROGRAM_BUILD_LOG, sizeof(buffer), buffer, &len);
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printf("%s\n", buffer);
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return NULL;
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}
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return program;
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}
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cl_kernel CompileKernel(cl_program program, const char *Function)
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{
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int err;
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// Create the compute kernel in the program we wish to run
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//
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cl_kernel kernel = clCreateKernel(program, Function, &err);
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if (!kernel || err != CL_SUCCESS)
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{
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printf("Error: Failed to create compute kernel!\n");
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return NULL;
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}
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return kernel;
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}
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#endif
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void Destroy() {
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#if defined(HAVE_OPENCL) && HAVE_OPENCL
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if(!g_context)
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return;
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clReleaseCommandQueue(g_cmdq);
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clReleaseContext(g_context);
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#endif
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}
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};
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