260 lines
6.2 KiB
C++
260 lines
6.2 KiB
C++
// Copyright 2013 Dolphin Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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// TODO: Make a more centralized version of this (for now every backend 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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#include "Timer.h"
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namespace OpenCL
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{
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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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bool g_bInitialized = false;
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bool Initialize()
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{
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if(g_bInitialized)
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return true;
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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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#ifdef __APPLE__
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// If OpenCL is weakly linked and not found, its symbols will be NULL
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if (clGetPlatformIDs == NULL)
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return false;
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#else
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clrInit();
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if(!clrHasOpenCL())
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return false;
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#endif
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// Connect to a compute device
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cl_uint numPlatforms;
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cl_platform_id platform = NULL;
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err = clGetPlatformIDs(0, NULL, &numPlatforms);
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if (err != CL_SUCCESS)
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{
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HandleCLError(err, "clGetPlatformIDs failed.");
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return false;
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}
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if (0 < numPlatforms)
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{
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cl_platform_id* platforms = new cl_platform_id[numPlatforms];
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err = clGetPlatformIDs(numPlatforms, platforms, NULL);
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if (err != CL_SUCCESS)
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{
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HandleCLError(err, "clGetPlatformIDs failed.");
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return false;
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}
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char pbuf[100];
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err = clGetPlatformInfo(platforms[0], CL_PLATFORM_VENDOR, sizeof(pbuf),
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pbuf, NULL);
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if (err != CL_SUCCESS)
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{
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HandleCLError(err, "clGetPlatformInfo failed.");
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return false;
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}
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platform = platforms[0];
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delete[] platforms;
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}
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else
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{
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PanicAlert("No OpenCL platform found.");
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return false;
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}
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cl_context_properties cps[3] = {CL_CONTEXT_PLATFORM,
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(cl_context_properties)platform, 0};
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cl_context_properties* cprops = (NULL == platform) ? NULL : cps;
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err = clGetDeviceIDs(platform, CL_DEVICE_TYPE_DEFAULT, 1, &device_id, NULL);
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if (err != CL_SUCCESS)
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{
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HandleCLError(err, "Failed to create a device group!");
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return false;
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}
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// Create a compute context
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g_context = clCreateContext(cprops, 1, &device_id, NULL, NULL, &err);
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if (!g_context)
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{
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HandleCLError(err, "Failed to create a compute context!");
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return false;
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}
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// Create a command commands
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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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HandleCLError(err, "Failed to create a command commands!");
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return false;
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}
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g_bInitialized = true;
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return true;
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}
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cl_context GetContext()
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{
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return g_context;
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}
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cl_command_queue GetCommandQueue()
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{
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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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{
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u32 compileStart = Common::Timer::GetTimeMs();
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cl_int err;
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cl_program program;
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program = clCreateProgramWithSource(OpenCL::g_context, 1,
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(const char **) & Kernel, NULL, &err);
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if (!program)
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{
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HandleCLError(err, "Error: Failed to create compute program!");
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}
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// Build the program executable
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err = clBuildProgram(program , 0, NULL, NULL, NULL, NULL);
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if(err != CL_SUCCESS) {
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HandleCLError(err, "Error: failed to build program");
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char *buildlog = NULL;
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size_t buildlog_size = 0;
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clGetProgramBuildInfo(program, OpenCL::device_id, CL_PROGRAM_BUILD_LOG, 0, NULL, &buildlog_size);
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buildlog = new char[buildlog_size + 1];
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err = clGetProgramBuildInfo(program, OpenCL::device_id, CL_PROGRAM_BUILD_LOG, buildlog_size, buildlog, NULL);
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buildlog[buildlog_size] = 0;
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if(err != CL_SUCCESS)
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{
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HandleCLError(err, "Error: can't get build log");
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} else
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{
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ERROR_LOG(COMMON, "Error log:\n%s\n", buildlog);
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}
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delete[] buildlog;
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return NULL;
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}
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INFO_LOG(COMMON, "OpenCL CompileProgram took %.3f seconds",
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(float)(Common::Timer::GetTimeMs() - compileStart) / 1000.0);
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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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u32 compileStart = Common::Timer::GetTimeMs();
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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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cl_kernel kernel = clCreateKernel(program, Function, &err);
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if (!kernel || err != CL_SUCCESS)
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{
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char buffer[1024];
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sprintf(buffer, "Failed to create compute kernel '%s' !", Function);
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HandleCLError(err, buffer);
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return NULL;
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}
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INFO_LOG(COMMON, "OpenCL CompileKernel took %.3f seconds",
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(float)(Common::Timer::GetTimeMs() - compileStart) / 1000.0);
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return kernel;
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}
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void Destroy()
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{
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if (g_cmdq)
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{
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clReleaseCommandQueue(g_cmdq);
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g_cmdq = NULL;
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}
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if (g_context)
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{
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clReleaseContext(g_context);
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g_context = NULL;
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}
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g_bInitialized = false;
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}
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void HandleCLError(cl_int error, const char* str)
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{
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const char* name;
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switch(error)
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{
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#define CL_ERROR(x) case (x): name = #x; break
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CL_ERROR(CL_SUCCESS);
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CL_ERROR(CL_DEVICE_NOT_FOUND);
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CL_ERROR(CL_DEVICE_NOT_AVAILABLE);
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CL_ERROR(CL_COMPILER_NOT_AVAILABLE);
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CL_ERROR(CL_MEM_OBJECT_ALLOCATION_FAILURE);
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CL_ERROR(CL_OUT_OF_RESOURCES);
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CL_ERROR(CL_OUT_OF_HOST_MEMORY);
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CL_ERROR(CL_PROFILING_INFO_NOT_AVAILABLE);
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CL_ERROR(CL_MEM_COPY_OVERLAP);
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CL_ERROR(CL_IMAGE_FORMAT_MISMATCH);
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CL_ERROR(CL_IMAGE_FORMAT_NOT_SUPPORTED);
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CL_ERROR(CL_BUILD_PROGRAM_FAILURE);
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CL_ERROR(CL_MAP_FAILURE);
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CL_ERROR(CL_INVALID_VALUE);
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CL_ERROR(CL_INVALID_DEVICE_TYPE);
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CL_ERROR(CL_INVALID_PLATFORM);
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CL_ERROR(CL_INVALID_DEVICE);
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CL_ERROR(CL_INVALID_CONTEXT);
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CL_ERROR(CL_INVALID_QUEUE_PROPERTIES);
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CL_ERROR(CL_INVALID_COMMAND_QUEUE);
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CL_ERROR(CL_INVALID_HOST_PTR);
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CL_ERROR(CL_INVALID_MEM_OBJECT);
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CL_ERROR(CL_INVALID_IMAGE_FORMAT_DESCRIPTOR);
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CL_ERROR(CL_INVALID_IMAGE_SIZE);
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CL_ERROR(CL_INVALID_SAMPLER);
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CL_ERROR(CL_INVALID_BINARY);
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CL_ERROR(CL_INVALID_BUILD_OPTIONS);
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CL_ERROR(CL_INVALID_PROGRAM);
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CL_ERROR(CL_INVALID_PROGRAM_EXECUTABLE);
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CL_ERROR(CL_INVALID_KERNEL_NAME);
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CL_ERROR(CL_INVALID_KERNEL_DEFINITION);
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CL_ERROR(CL_INVALID_KERNEL);
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CL_ERROR(CL_INVALID_ARG_INDEX);
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CL_ERROR(CL_INVALID_ARG_VALUE);
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CL_ERROR(CL_INVALID_ARG_SIZE);
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CL_ERROR(CL_INVALID_KERNEL_ARGS);
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CL_ERROR(CL_INVALID_WORK_DIMENSION);
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CL_ERROR(CL_INVALID_WORK_GROUP_SIZE);
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CL_ERROR(CL_INVALID_WORK_ITEM_SIZE);
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CL_ERROR(CL_INVALID_GLOBAL_OFFSET);
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CL_ERROR(CL_INVALID_EVENT_WAIT_LIST);
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CL_ERROR(CL_INVALID_EVENT);
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CL_ERROR(CL_INVALID_OPERATION);
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CL_ERROR(CL_INVALID_GL_OBJECT);
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CL_ERROR(CL_INVALID_BUFFER_SIZE);
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CL_ERROR(CL_INVALID_MIP_LEVEL);
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#undef CL_ERROR
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default:
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name = "Unknown error code";
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}
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if(!str)
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str = "";
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ERROR_LOG(COMMON, "OpenCL error: %s %s (%d)", str, name, error);
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}
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}
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