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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/
#include "OCLTextureDecoder.h"
#include "OpenCL.h"
#include "FileUtil.h"
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <string>
//#define DEBUG_OPENCL
struct sDecoders
{
const char name[256]; // kernel name
cl_kernel kernel; // compute kernel
};
cl_program g_program;
// NULL terminated set of kernels
sDecoders Decoders[] = {
{"DecodeI4", NULL},
{"DecodeI8", NULL},
{"DecodeIA4", NULL},
{"DecodeIA8", NULL},
{"DecodeRGBA8", NULL},
{"DecodeRGB565", NULL},
{"DecodeRGB5A3", NULL},
{"DecodeCMPR", NULL},
{"", NULL},
};
bool g_Inited = false;
cl_mem g_clsrc, g_cldst; // texture buffer memory objects
void TexDecoder_OpenCL_Initialize() {
#if defined(HAVE_OPENCL) && HAVE_OPENCL
if(!g_Inited)
{
if(!OpenCL::Initialize())
return;
std::string code;
char filename[1024];
sprintf(filename, "%sOpenCL/TextureDecoder.cl", File::GetUserPath(D_USER_IDX));
if (!File::ReadFileToString(true, filename, code))
{
ERROR_LOG(VIDEO, "Failed to load OpenCL code %s - file is missing?", filename);
return;
}
g_program = OpenCL::CompileProgram(code.c_str());
int i = 0;
while(strlen(Decoders[i].name) > 0) {
Decoders[i].kernel = OpenCL::CompileKernel(g_program, Decoders[i].name);
i++;
}
// Allocating maximal Wii texture size in advance, so that we don't have to allocate/deallocate per texture
#ifndef DEBUG_OPENCL
g_clsrc = clCreateBuffer(OpenCL::GetContext(), CL_MEM_READ_ONLY , 1024 * 1024 * sizeof(u32), NULL, NULL);
g_cldst = clCreateBuffer(OpenCL::GetContext(), CL_MEM_WRITE_ONLY, 1024 * 1024 * sizeof(u32), NULL, NULL);
#endif
g_Inited = true;
}
#endif
}
void TexDecoder_OpenCL_Shutdown() {
#if defined(HAVE_OPENCL) && HAVE_OPENCL && !defined(DEBUG_OPENCL)
clReleaseProgram(g_program);
int i = 0;
while(strlen(Decoders[i].name) > 0)
{
clReleaseKernel(Decoders[i].kernel);
i++;
}
if(g_clsrc)
clReleaseMemObject(g_clsrc);
if(g_cldst)
clReleaseMemObject(g_cldst);
g_Inited = false;
#endif
}
PC_TexFormat TexDecoder_Decode_OpenCL(u8 *dst, const u8 *src, int width, int height, int texformat, int tlutaddr, int tlutfmt)
{
#if defined(HAVE_OPENCL) && HAVE_OPENCL
cl_int err;
cl_kernel kernelToRun = Decoders[0].kernel;
float sizeOfDst = sizeof(u8), sizeOfSrc = sizeof(u8), xSkip, ySkip;
PC_TexFormat formatResult;
switch(texformat)
{
case GX_TF_I4:
kernelToRun = Decoders[0].kernel;
sizeOfSrc = sizeof(u8) / 2.0f;
sizeOfDst = sizeof(u8);
xSkip = 8;
ySkip = 8;
formatResult = PC_TEX_FMT_I4_AS_I8;
break;
case GX_TF_I8:
kernelToRun = Decoders[1].kernel;
sizeOfSrc = sizeOfDst = sizeof(u8);
xSkip = 8;
ySkip = 4;
formatResult = PC_TEX_FMT_I8;
break;
case GX_TF_IA4:
kernelToRun = Decoders[2].kernel;
sizeOfSrc = sizeof(u8);
sizeOfDst = sizeof(u16);
xSkip = 8;
ySkip = 4;
formatResult = PC_TEX_FMT_IA4_AS_IA8;
break;
case GX_TF_IA8:
kernelToRun = Decoders[3].kernel;
sizeOfSrc = sizeOfDst = sizeof(u16);
xSkip = 4;
ySkip = 4;
formatResult = PC_TEX_FMT_IA8;
break;
case GX_TF_RGBA8:
kernelToRun = Decoders[4].kernel;
sizeOfSrc = sizeOfDst = sizeof(u32);
xSkip = 4;
ySkip = 4;
formatResult = PC_TEX_FMT_BGRA32;
break;
case GX_TF_RGB565:
kernelToRun = Decoders[5].kernel;
sizeOfSrc = sizeOfDst = sizeof(u16);
xSkip = 4;
ySkip = 4;
formatResult = PC_TEX_FMT_RGB565;
break;
case GX_TF_RGB5A3:
kernelToRun = Decoders[6].kernel;
sizeOfSrc = sizeof(u16);
sizeOfDst = sizeof(u32);
xSkip = 4;
ySkip = 4;
formatResult = PC_TEX_FMT_BGRA32;
break;
case GX_TF_CMPR:
// Doesn't decode correctly
return PC_TEX_FMT_NONE;
kernelToRun = Decoders[7].kernel;
sizeOfSrc = sizeof(u8) / 2.0f;
sizeOfDst = sizeof(u32);
xSkip = 8;
ySkip = 8;
formatResult = PC_TEX_FMT_BGRA32;
break;
default:
return PC_TEX_FMT_NONE;
}
#ifdef DEBUG_OPENCL
g_clsrc = clCreateBuffer(OpenCL::GetContext(), CL_MEM_READ_ONLY , 1024 * 1024 * sizeof(u32), NULL, NULL);
g_cldst = clCreateBuffer(OpenCL::GetContext(), CL_MEM_WRITE_ONLY, 1024 * 1024 * sizeof(u32), NULL, NULL);
#endif
clEnqueueWriteBuffer(OpenCL::GetCommandQueue(), g_clsrc, CL_TRUE, 0, (size_t)(width * height * sizeOfSrc), src, 0, NULL, NULL);
clSetKernelArg(kernelToRun, 0, sizeof(cl_mem), &g_cldst);
clSetKernelArg(kernelToRun, 1, sizeof(cl_mem), &g_clsrc);
clSetKernelArg(kernelToRun, 2, sizeof(cl_int), &width);
size_t global[] = { (size_t)(width / xSkip), (size_t)(height / ySkip) };
// No work-groups for now
/*
size_t local;
err = clGetKernelWorkGroupInfo(kernelToRun, OpenCL::device_id, CL_KERNEL_WORK_GROUP_SIZE, sizeof(local), &local, NULL);
if(err)
PanicAlert("Error obtaining work-group information");
*/
err = clEnqueueNDRangeKernel(OpenCL::GetCommandQueue(), kernelToRun, 2, NULL, global, NULL, 0, NULL, NULL);
if(err)
OpenCL::HandleCLError(err, "Failed to enqueue kernel");
clFinish(OpenCL::GetCommandQueue());
clEnqueueReadBuffer(OpenCL::GetCommandQueue(), g_cldst, CL_TRUE, 0, (size_t)(width * height * sizeOfDst), dst, 0, NULL, NULL);
#ifdef DEBUG_OPENCL
clReleaseMemObject(g_clsrc);
clReleaseMemObject(g_cldst);
#endif
return formatResult;
#else
return PC_TEX_FMT_NONE;
#endif
return PC_TEX_FMT_NONE;
}
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