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// Copyright (C) 2003 Dolphin Project.
// 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, version 2.0.
// 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 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
// 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?
#include "OpenCL.h"
#include "Common.h"
namespace OpenCL {
#if defined(HAVE_OPENCL) && HAVE_OPENCL
cl_device_id device_id = NULL;
cl_context g_context = NULL;
cl_command_queue g_cmdq = NULL;
#endif
bool g_bInitialized = false;
bool Initialize() {
if(g_bInitialized)
return true;
#if defined(HAVE_OPENCL) && HAVE_OPENCL
if(g_context)
return false;
int err; // error code returned from api calls
// Connect to a compute device
//
int gpu = 1; // I think we should use CL_DEVICE_TYPE_ALL
err = clGetDeviceIDs(NULL, gpu ? CL_DEVICE_TYPE_GPU : CL_DEVICE_TYPE_CPU, 1, &device_id, NULL);
if (err != CL_SUCCESS)
{
HandleCLError(err, "Failed to create a device group!");
return false;
}
// Create a compute context
//
g_context = clCreateContext(0, 1, &device_id, NULL, NULL, &err);
if (!g_context)
{
HandleCLError(err, "Failed to create a compute context!");
return false;
}
// Create a command commands
//
g_cmdq = clCreateCommandQueue(g_context, device_id, 0, &err);
if (!g_cmdq)
{
HandleCLError(err, "Failed to create a command commands!");
return false;
}
//PanicAlert("Initialized OpenCL fine!");
g_bInitialized = true;
return true;
#else
return false;
#endif
}
#if defined(HAVE_OPENCL) && HAVE_OPENCL
cl_context GetContext() {
return g_context;
}
cl_command_queue GetCommandQueue() {
return g_cmdq;
}
cl_program CompileProgram(const char *Kernel) {
int err;
cl_program program;
program = clCreateProgramWithSource(OpenCL::g_context, 1, (const char **) & Kernel, NULL, &err);
if (!program)
{
HandleCLError(err, "Error: Failed to create compute program!");
return NULL;
}
// Build the program executable
//
err = clBuildProgram(program , 0, NULL, NULL, NULL, NULL);
if(err != CL_SUCCESS) {
char *errors[16384] = {0};
err = clGetProgramBuildInfo(program, OpenCL::device_id, CL_PROGRAM_BUILD_LOG, sizeof(errors),
errors, NULL);
PanicAlert("Error log:\n%s\n", errors);
return NULL;
}
return program;
}
cl_kernel CompileKernel(cl_program program, const char *Function)
{
int err;
// Create the compute kernel in the program we wish to run
//
cl_kernel kernel = clCreateKernel(program, Function, &err);
if (!kernel || err != CL_SUCCESS)
{
HandleCLError(err, "Failed to create compute kernel!");
return NULL;
}
return kernel;
}
#endif
void Destroy() {
#if defined(HAVE_OPENCL) && HAVE_OPENCL
if(!g_context)
return;
clReleaseCommandQueue(g_cmdq);
clReleaseContext(g_context);
#endif
}
#if defined(HAVE_OPENCL) && HAVE_OPENCL
void HandleCLError(cl_int error, char* str)
{
char* name;
switch(error)
{
#define CL_ERROR(x) case (x): name = #x; break
CL_ERROR(CL_SUCCESS);
CL_ERROR(CL_DEVICE_NOT_FOUND);
CL_ERROR(CL_DEVICE_NOT_AVAILABLE);
CL_ERROR(CL_COMPILER_NOT_AVAILABLE);
CL_ERROR(CL_MEM_OBJECT_ALLOCATION_FAILURE);
CL_ERROR(CL_OUT_OF_RESOURCES);
CL_ERROR(CL_OUT_OF_HOST_MEMORY);
CL_ERROR(CL_PROFILING_INFO_NOT_AVAILABLE);
CL_ERROR(CL_MEM_COPY_OVERLAP);
CL_ERROR(CL_IMAGE_FORMAT_MISMATCH);
CL_ERROR(CL_IMAGE_FORMAT_NOT_SUPPORTED);
CL_ERROR(CL_BUILD_PROGRAM_FAILURE);
CL_ERROR(CL_MAP_FAILURE);
CL_ERROR(CL_INVALID_VALUE);
CL_ERROR(CL_INVALID_DEVICE_TYPE);
CL_ERROR(CL_INVALID_PLATFORM);
CL_ERROR(CL_INVALID_DEVICE);
CL_ERROR(CL_INVALID_CONTEXT);
CL_ERROR(CL_INVALID_QUEUE_PROPERTIES);
CL_ERROR(CL_INVALID_COMMAND_QUEUE);
CL_ERROR(CL_INVALID_HOST_PTR);
CL_ERROR(CL_INVALID_MEM_OBJECT);
CL_ERROR(CL_INVALID_IMAGE_FORMAT_DESCRIPTOR);
CL_ERROR(CL_INVALID_IMAGE_SIZE);
CL_ERROR(CL_INVALID_SAMPLER);
CL_ERROR(CL_INVALID_BINARY);
CL_ERROR(CL_INVALID_BUILD_OPTIONS);
CL_ERROR(CL_INVALID_PROGRAM);
CL_ERROR(CL_INVALID_PROGRAM_EXECUTABLE);
CL_ERROR(CL_INVALID_KERNEL_NAME);
CL_ERROR(CL_INVALID_KERNEL_DEFINITION);
CL_ERROR(CL_INVALID_KERNEL);
CL_ERROR(CL_INVALID_ARG_INDEX);
CL_ERROR(CL_INVALID_ARG_VALUE);
CL_ERROR(CL_INVALID_ARG_SIZE);
CL_ERROR(CL_INVALID_KERNEL_ARGS);
CL_ERROR(CL_INVALID_WORK_DIMENSION);
CL_ERROR(CL_INVALID_WORK_GROUP_SIZE);
CL_ERROR(CL_INVALID_WORK_ITEM_SIZE);
CL_ERROR(CL_INVALID_GLOBAL_OFFSET);
CL_ERROR(CL_INVALID_EVENT_WAIT_LIST);
CL_ERROR(CL_INVALID_EVENT);
CL_ERROR(CL_INVALID_OPERATION);
CL_ERROR(CL_INVALID_GL_OBJECT);
CL_ERROR(CL_INVALID_BUFFER_SIZE);
CL_ERROR(CL_INVALID_MIP_LEVEL);
#undef CL_ERROR
default:
name = "Unknown error code";
}
if(!str)
str = "";
PanicAlert("OpenCL error: %s %s (%d)", str, name, error);
}
#endif
};
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