mirror of
https://github.com/dolphin-emu/dolphin.git
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236f75aac3
The theoretical result is slightly different to the original shader because the final adjustment is to the range [0/255..255/255] instead of [0/16777215..16777215/16777215]. The real result is vastly different on some gpus that were giving incorrect results of bits 23..16 (y-component) wrapping around while bits 31..24 (z-component) stayed the same, and bits 31..24 changing while in the middle of the value range for bits 23..16 for large depth values. This should fix issue #3123. git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6217 8ced0084-cf51-0410-be5f-012b33b47a6e
344 lines
11 KiB
C++
344 lines
11 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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#include "Globals.h"
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#include "Profiler.h"
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#include "GLUtil.h"
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#include <cmath>
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#include "Statistics.h"
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#include "VideoConfig.h"
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#include "ImageWrite.h"
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#include "Common.h"
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#include "Render.h"
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#include "VertexShaderGen.h"
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#include "PixelShaderCache.h"
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#include "PixelShaderManager.h"
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#include "FileUtil.h"
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static int s_nMaxPixelInstructions;
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static GLuint s_ColorMatrixProgram = 0;
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static GLuint s_DepthMatrixProgram = 0;
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PixelShaderCache::PSCache PixelShaderCache::pshaders;
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PIXELSHADERUID PixelShaderCache::s_curuid;
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bool PixelShaderCache::s_displayCompileAlert;
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GLuint PixelShaderCache::CurrentShader;
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bool PixelShaderCache::ShaderEnabled;
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static FRAGMENTSHADER* pShaderLast = NULL;
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void SetPSConstant4f(unsigned int const_number, float f1, float f2, float f3, float f4)
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{
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float f[4] = { f1, f2, f3, f4 };
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glProgramEnvParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, const_number, f);
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}
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void SetPSConstant4fv(unsigned int const_number, const float *f)
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{
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glProgramEnvParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, const_number, f);
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}
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void SetMultiPSConstant4fv(unsigned int const_number, unsigned int count, const float *f)
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{
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for (unsigned int i = 0; i < count; i++,f+=4)
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glProgramEnvParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, const_number + i, f);
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}
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void PixelShaderCache::Init()
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{
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glEnable(GL_FRAGMENT_PROGRAM_ARB);
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ShaderEnabled = true;
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CurrentShader = 0;
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GL_REPORT_ERRORD();
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memset(&last_pixel_shader_uid, 0xFF, sizeof(last_pixel_shader_uid));
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s_displayCompileAlert = true;
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glGetProgramivARB(GL_FRAGMENT_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_ALU_INSTRUCTIONS_ARB, (GLint *)&s_nMaxPixelInstructions);
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#if CG_VERSION_NUM == 2100
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if (strstr((const char*)glGetString(GL_VENDOR), "ATI") != NULL)
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{
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s_nMaxPixelInstructions = 4096;
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}
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#endif
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int maxinst, maxattribs;
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glGetProgramivARB(GL_FRAGMENT_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB, (GLint *)&maxinst);
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glGetProgramivARB(GL_FRAGMENT_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_ATTRIBS_ARB, (GLint *)&maxattribs);
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INFO_LOG(VIDEO, "pixel max_alu=%d, max_inst=%d, max_attrib=%d", s_nMaxPixelInstructions, maxinst, maxattribs);
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char pmatrixprog[1024];
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sprintf(pmatrixprog, "!!ARBfp1.0"
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"TEMP R0;\n"
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"TEMP R1;\n"
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"TEX R0, fragment.texcoord[0], texture[0], RECT;\n"
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"DP4 R1.w, R0, program.env[%d];\n"
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"DP4 R1.z, R0, program.env[%d];\n"
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"DP4 R1.x, R0, program.env[%d];\n"
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"DP4 R1.y, R0, program.env[%d];\n"
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"ADD result.color, R1, program.env[%d];\n"
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"END\n", C_COLORMATRIX+3, C_COLORMATRIX+2, C_COLORMATRIX, C_COLORMATRIX+1, C_COLORMATRIX+4);
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glGenProgramsARB(1, &s_ColorMatrixProgram);
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SetCurrentShader(s_ColorMatrixProgram);
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glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, (GLsizei)strlen(pmatrixprog), pmatrixprog);
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GLenum err = GL_REPORT_ERROR();
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if (err != GL_NO_ERROR) {
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ERROR_LOG(VIDEO, "Failed to create color matrix fragment program");
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glDeleteProgramsARB(1, &s_ColorMatrixProgram);
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s_ColorMatrixProgram = 0;
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}
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sprintf(pmatrixprog, "!!ARBfp1.0\n"
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"TEMP R0;\n"
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"TEMP R1;\n"
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"TEMP R2;\n"
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//16777215/16777216*256, 1/255, 256, 0
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"PARAM K0 = { 255.99998474121, 0.003921568627451, 256.0, 0.0};\n"
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//sample the depth value
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"TEX R2, fragment.texcoord[0], texture[0], RECT;\n"
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//scale from [0*16777216..1*16777216] to
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//[0*16777215..1*16777215], multiply by 256
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"MUL R0, R2.x, K0.x;\n" // *16777215/16777216*256
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//It is easy to get bad results due to low precision
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//here, for example converting like this:
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//MUL R0,R0,{ 65536, 256, 1, 16777216 }
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//FRC R0,R0
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//gives {?, 128/255, 254/255, ?} for depth value 254/255
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//on some gpus
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"FLR R0.z,R0;\n" //bits 31..24
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"SUB R0.xyw,R0,R0.z;\n" //subtract bits 31..24 from rest
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"MUL R0.xyw,R0,K0.z;\n" // *256
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"FLR R0.y,R0;\n" //bits 23..16
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"SUB R0.xw,R0,R0.y;\n" //subtract bits 23..16 from rest
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"MUL R0.xw,R0,K0.z;\n" // *256
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"FLR R0.x,R0;\n" //bits 15..8
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"SUB R0.w,R0,R0.x;\n" //subtract bits 15..8 from rest
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"MUL R0.w,R0,K0.z;\n" // *256
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"FLR R0.w,R0;\n" //bits 7..0
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"MUL R0,R0,K0.y;\n" // /255
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"DP4 R1.x, R0, program.env[%d];\n"
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"DP4 R1.y, R0, program.env[%d];\n"
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"DP4 R1.z, R0, program.env[%d];\n"
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"DP4 R1.w, R0, program.env[%d];\n"
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"ADD result.color, R1, program.env[%d];\n"
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"END\n", C_COLORMATRIX, C_COLORMATRIX+1, C_COLORMATRIX+2, C_COLORMATRIX+3, C_COLORMATRIX+4);
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glGenProgramsARB(1, &s_DepthMatrixProgram);
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SetCurrentShader(s_DepthMatrixProgram);
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glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, (GLsizei)strlen(pmatrixprog), pmatrixprog);
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err = GL_REPORT_ERROR();
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if (err != GL_NO_ERROR) {
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ERROR_LOG(VIDEO, "Failed to create depth matrix fragment program");
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glDeleteProgramsARB(1, &s_DepthMatrixProgram);
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s_DepthMatrixProgram = 0;
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}
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}
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void PixelShaderCache::Shutdown()
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{
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glDeleteProgramsARB(1, &s_ColorMatrixProgram);
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s_ColorMatrixProgram = 0;
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glDeleteProgramsARB(1, &s_DepthMatrixProgram);
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s_DepthMatrixProgram = 0;
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PSCache::iterator iter = pshaders.begin();
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for (; iter != pshaders.end(); iter++)
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iter->second.Destroy();
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pshaders.clear();
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}
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GLuint PixelShaderCache::GetColorMatrixProgram()
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{
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return s_ColorMatrixProgram;
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}
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GLuint PixelShaderCache::GetDepthMatrixProgram()
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{
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return s_DepthMatrixProgram;
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}
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FRAGMENTSHADER* PixelShaderCache::GetShader(bool dstAlphaEnable)
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{
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DVSTARTPROFILE();
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PIXELSHADERUID uid;
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GetPixelShaderId(&uid, dstAlphaEnable ? 1 : 0);
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if (uid == last_pixel_shader_uid && pshaders[uid].frameCount == frameCount)
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{
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return pShaderLast;
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}
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memcpy(&last_pixel_shader_uid, &uid, sizeof(PIXELSHADERUID));
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PSCache::iterator iter = pshaders.find(uid);
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if (iter != pshaders.end()) {
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iter->second.frameCount = frameCount;
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PSCacheEntry &entry = iter->second;
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if (&entry.shader != pShaderLast)
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{
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pShaderLast = &entry.shader;
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}
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return pShaderLast;
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}
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//Make an entry in the table
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PSCacheEntry& newentry = pshaders[uid];
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newentry.frameCount = frameCount;
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pShaderLast = &newentry.shader;
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const char *code = GeneratePixelShaderCode(dstAlphaEnable,API_OPENGL);
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#if defined(_DEBUG) || defined(DEBUGFAST)
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if (g_ActiveConfig.iLog & CONF_SAVESHADERS && code) {
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static int counter = 0;
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char szTemp[MAX_PATH];
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sprintf(szTemp, "%sps_%04i.txt", File::GetUserPath(D_DUMP_IDX), counter++);
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SaveData(szTemp, code);
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}
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#endif
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// printf("Compiling pixel shader. size = %i\n", strlen(code));
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if (!code || !CompilePixelShader(newentry.shader, code)) {
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ERROR_LOG(VIDEO, "failed to create pixel shader");
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static int counter = 0;
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char szTemp[MAX_PATH];
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sprintf(szTemp, "%sBADps_%04i.txt", File::GetUserPath(D_DUMP_IDX), counter++);
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SaveData(szTemp, code);
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return NULL;
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}
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INCSTAT(stats.numPixelShadersCreated);
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SETSTAT(stats.numPixelShadersAlive, pshaders.size());
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return pShaderLast;
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}
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bool PixelShaderCache::CompilePixelShader(FRAGMENTSHADER& ps, const char* pstrprogram)
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{
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GLenum err = GL_REPORT_ERROR();
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if (err != GL_NO_ERROR)
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{
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ERROR_LOG(VIDEO, "glError %08x before PS!", err);
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}
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#if defined HAVE_CG && HAVE_CG
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char stropt[128];
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sprintf(stropt, "MaxLocalParams=32,NumInstructionSlots=%d", s_nMaxPixelInstructions);
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const char *opts[] = {"-profileopts", stropt, "-O2", "-q", NULL};
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CGprogram tempprog = cgCreateProgram(g_cgcontext, CG_SOURCE, pstrprogram, g_cgfProf, "main", opts);
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// handle errors
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if (!cgIsProgram(tempprog)) {
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cgDestroyProgram(tempprog);
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ERROR_LOG(VIDEO, "Failed to compile ps %s:", cgGetLastListing(g_cgcontext));
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ERROR_LOG(VIDEO, pstrprogram);
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return false;
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}
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// handle warnings
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if (cgGetError() != CG_NO_ERROR)
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{
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WARN_LOG(VIDEO, "Warnings on compile ps %s:", cgGetLastListing(g_cgcontext));
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WARN_LOG(VIDEO, pstrprogram);
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}
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// This looks evil - we modify the program through the const char * we got from cgGetProgramString!
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// It SHOULD not have any nasty side effects though - but you never know...
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char *pcompiledprog = (char*)cgGetProgramString(tempprog, CG_COMPILED_PROGRAM);
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char *plocal = strstr(pcompiledprog, "program.local");
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while (plocal != NULL) {
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const char *penv = " program.env";
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memcpy(plocal, penv, 13);
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plocal = strstr(plocal+13, "program.local");
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}
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glGenProgramsARB(1, &ps.glprogid);
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SetCurrentShader(ps.glprogid);
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glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, (GLsizei)strlen(pcompiledprog), pcompiledprog);
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err = GL_REPORT_ERROR();
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if (err != GL_NO_ERROR)
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{
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GLint error_pos, native_limit;
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glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &error_pos);
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glGetProgramivARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_UNDER_NATIVE_LIMITS_ARB, &native_limit);
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// Error occur
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if (error_pos != -1) {
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const char *program_error = (const char *)glGetString(GL_PROGRAM_ERROR_STRING_ARB);
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char line[256];
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strncpy(line, (const char *)pcompiledprog + error_pos, 255);
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line[255] = 0;
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ERROR_LOG(VIDEO, "Error at %i: %s", error_pos, program_error);
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ERROR_LOG(VIDEO, "Line dump: \n%s", line);
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} else if (native_limit != -1) {
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ERROR_LOG(VIDEO, "Hit limit? %i", native_limit);
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// TODO
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}
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ERROR_LOG(VIDEO, pstrprogram);
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ERROR_LOG(VIDEO, pcompiledprog);
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}
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cgDestroyProgram(tempprog);
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#endif
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#if defined(_DEBUG) || defined(DEBUGFAST)
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ps.strprog = pstrprogram;
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#endif
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return true;
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}
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//Disable Fragment programs and reset the selected Program
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void PixelShaderCache::DisableShader()
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{
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if(ShaderEnabled)
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{
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glDisable(GL_FRAGMENT_PROGRAM_ARB);
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ShaderEnabled = false;
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}
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}
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//bind a program if is diferent from the binded oone
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void PixelShaderCache::SetCurrentShader(GLuint Shader)
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{
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if(!ShaderEnabled)
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{
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glEnable(GL_FRAGMENT_PROGRAM_ARB);
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ShaderEnabled = true;
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}
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if(CurrentShader != Shader)
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{
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if(Shader != 0)
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CurrentShader = Shader;
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glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, CurrentShader);
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}
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}
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