370 lines
12 KiB
C++
370 lines
12 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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// Fast image conversion using OpenGL shaders.
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// This kind of stuff would be a LOT nicer with OpenCL.
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#include "TextureConverter.h"
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#include "TextureConversionShader.h"
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#include "PixelShaderCache.h"
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#include "VertexShaderManager.h"
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#include "Globals.h"
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#include "Config.h"
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#include "ImageWrite.h"
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#include "Render.h"
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namespace TextureConverter
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{
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static GLuint s_texConvFrameBuffer = 0;
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static GLuint s_srcTexture = 0; // for decoding from RAM
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static GLuint s_dstRenderBuffer = 0; // for encoding to RAM
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const int renderBufferWidth = 1024;
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const int renderBufferHeight = 1024;
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static FRAGMENTSHADER s_rgbToYuyvProgram;
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static FRAGMENTSHADER s_yuyvToRgbProgram;
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// Not all slots are taken - but who cares.
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const u32 NUM_ENCODING_PROGRAMS = 64;
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static FRAGMENTSHADER s_encodingPrograms[NUM_ENCODING_PROGRAMS];
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void CreateRgbToYuyvProgram()
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{
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// Output is BGRA because that is slightly faster than RGBA.
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// TODO: Use the dot() function for faster dot products. Probably mostly helps ATI (nvidia is scalar anyway).
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const char *FProgram =
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"uniform samplerRECT samp0 : register(s0);\n"
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"void main(\n"
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" out float4 ocol0 : COLOR0,\n"
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" in float2 uv0 : TEXCOORD0)\n"
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"{\n"
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" float2 uv1 = float2(uv0.x + 1.0f, uv0.y);\n"
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" float3 c0 = texRECT(samp0, uv0).rgb;\n"
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" float3 c1 = texRECT(samp0, uv1).rgb;\n"
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" float y0 = (0.257f * c0.r) + (0.504f * c0.g) + (0.098f * c0.b) + 0.0625f;\n"
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" float u0 =-(0.148f * c0.r) - (0.291f * c0.g) + (0.439f * c0.b) + 0.5f;\n"
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" float v0 = (0.439f * c0.r) - (0.368f * c0.g) - (0.071f * c0.b) + 0.5f;\n"
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" float y1 = (0.257f * c1.r) + (0.504f * c1.g) + (0.098f * c1.b) + 0.0625f;\n"
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" float u1 =-(0.148f * c1.r) - (0.291f * c1.g) + (0.439f * c1.b) + 0.5f;\n"
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" float v1 = (0.439f * c1.r) - (0.368f * c1.g) - (0.071f * c1.b) + 0.5f;\n"
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" ocol0 = float4(y1, (u0 + u1) / 2, y0, (v0 + v1) / 2);\n"
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"}\n";
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if (!PixelShaderCache::CompilePixelShader(s_rgbToYuyvProgram, FProgram)) {
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ERROR_LOG(VIDEO, "Failed to create RGB to YUYV fragment program");
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}
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}
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void CreateYuyvToRgbProgram()
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{
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const char *FProgram =
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"uniform samplerRECT samp0 : register(s0);\n"
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"void main(\n"
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" out float4 ocol0 : COLOR0,\n"
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" in float2 uv0 : TEXCOORD0)\n"
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"{\n"
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" float4 c0 = texRECT(samp0, uv0).rgba;\n"
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" float f = step(0.5, frac(uv0.x));\n"
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" float y = lerp(c0.b, c0.r, f);\n"
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" float yComp = 1.164f * (y - 0.0625f);\n"
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" float uComp = c0.g - 0.5f;\n"
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" float vComp = c0.a - 0.5f;\n"
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" ocol0 = float4(yComp + (1.596f * vComp),\n"
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" yComp - (0.813f * vComp) - (0.391f * uComp),\n"
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" yComp + (2.018f * uComp),\n"
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" 1.0f);\n"
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"}\n";
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if (!PixelShaderCache::CompilePixelShader(s_yuyvToRgbProgram, FProgram)) {
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ERROR_LOG(VIDEO, "Failed to create YUYV to RGB fragment program");
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}
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}
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FRAGMENTSHADER &GetOrCreateEncodingShader(u32 format)
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{
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if (format > NUM_ENCODING_PROGRAMS)
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{
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PanicAlert("Unknown texture copy format: 0x%x\n", format);
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return s_encodingPrograms[0];
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}
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if (s_encodingPrograms[format].glprogid == 0)
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{
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const char* shader = TextureConversionShader::GenerateEncodingShader(format);
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#if defined(_DEBUG) || defined(DEBUGFAST)
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if (g_Config.iLog & CONF_SAVESHADERS && shader) {
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static int counter = 0;
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char szTemp[MAX_PATH];
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sprintf(szTemp, "%s/enc_%04i.txt", FULL_DUMP_DIR, counter++);
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SaveData(szTemp, shader);
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}
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#endif
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if (!PixelShaderCache::CompilePixelShader(s_encodingPrograms[format], shader)) {
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const char* error = cgGetLastListing(g_cgcontext);
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ERROR_LOG(VIDEO, "Failed to create encoding fragment program");
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}
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}
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return s_encodingPrograms[format];
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}
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void Init()
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{
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glGenFramebuffersEXT(1, &s_texConvFrameBuffer);
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glGenRenderbuffersEXT(1, &s_dstRenderBuffer);
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glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, s_dstRenderBuffer);
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glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGBA, renderBufferWidth, renderBufferHeight);
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glGenTextures(1, &s_srcTexture);
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glBindTexture(GL_TEXTURE_RECTANGLE_ARB, s_srcTexture);
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glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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CreateRgbToYuyvProgram();
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CreateYuyvToRgbProgram();
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}
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void Shutdown()
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{
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glDeleteTextures(1, &s_srcTexture);
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glDeleteRenderbuffersEXT(1, &s_dstRenderBuffer);
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glDeleteFramebuffersEXT(1, &s_texConvFrameBuffer);
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s_rgbToYuyvProgram.Destroy();
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s_yuyvToRgbProgram.Destroy();
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for (unsigned int i = 0; i < NUM_ENCODING_PROGRAMS; i++)
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s_encodingPrograms[i].Destroy();
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s_srcTexture = 0;
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s_dstRenderBuffer = 0;
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s_texConvFrameBuffer = 0;
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}
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void EncodeToRamUsingShader(FRAGMENTSHADER& shader, GLuint srcTexture, const TargetRectangle& sourceRc,
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u8* destAddr, int dstWidth, int dstHeight, bool linearFilter)
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{
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Renderer::ResetGLState();
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// switch to texture converter frame buffer
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// attach render buffer as color destination
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Renderer::SetFramebuffer(s_texConvFrameBuffer);
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glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, s_dstRenderBuffer);
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glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_RENDERBUFFER_EXT, s_dstRenderBuffer);
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GL_REPORT_ERRORD();
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for (int i = 1; i < 8; ++i)
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TextureMngr::DisableStage(i);
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// set source texture
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glActiveTexture(GL_TEXTURE0);
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glEnable(GL_TEXTURE_RECTANGLE_ARB);
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glBindTexture(GL_TEXTURE_RECTANGLE_ARB, srcTexture);
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if (linearFilter)
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{
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glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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}
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else
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{
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glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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}
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GL_REPORT_ERRORD();
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glViewport(0, 0, (GLsizei)dstWidth, (GLsizei)dstHeight);
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glEnable(GL_FRAGMENT_PROGRAM_ARB);
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glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, shader.glprogid);
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// Draw...
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glBegin(GL_QUADS);
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glTexCoord2f((float)sourceRc.left, (float)sourceRc.top); glVertex2f(-1,-1);
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glTexCoord2f((float)sourceRc.left, (float)sourceRc.bottom); glVertex2f(-1,1);
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glTexCoord2f((float)sourceRc.right, (float)sourceRc.bottom); glVertex2f(1,1);
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glTexCoord2f((float)sourceRc.right, (float)sourceRc.top); glVertex2f(1,-1);
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glEnd();
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GL_REPORT_ERRORD();
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// .. and then readback the results.
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// TODO: make this less slow.
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glReadPixels(0, 0, (GLsizei)dstWidth, (GLsizei)dstHeight, GL_BGRA, GL_UNSIGNED_BYTE, destAddr);
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GL_REPORT_ERRORD();
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Renderer::SetFramebuffer(0);
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Renderer::RestoreGLState();
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VertexShaderManager::SetViewportChanged();
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glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0);
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TextureMngr::DisableStage(0);
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Renderer::RestoreGLState();
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GL_REPORT_ERRORD();
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}
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void EncodeToRam(u32 address, bool bFromZBuffer, bool bIsIntensityFmt, u32 copyfmt, bool bScaleByHalf, const EFBRectangle& source)
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{
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u32 format = copyfmt;
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if (bFromZBuffer)
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{
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format |= _GX_TF_ZTF;
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if (copyfmt == 11)
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format = GX_TF_Z16;
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else if (format < GX_TF_Z8 || format > GX_TF_Z24X8)
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format |= _GX_TF_CTF;
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}
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else
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if (copyfmt > GX_TF_RGBA8 || (copyfmt < GX_TF_RGB565 && !bIsIntensityFmt))
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format |= _GX_TF_CTF;
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FRAGMENTSHADER& texconv_shader = GetOrCreateEncodingShader(format);
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if (texconv_shader.glprogid == 0)
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return;
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u8 *dest_ptr = Memory_GetPtr(address);
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GLuint source_texture = bFromZBuffer ? Renderer::ResolveAndGetDepthTarget(source) : Renderer::ResolveAndGetRenderTarget(source);
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int width = source.right - source.left;
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int height = source.bottom - source.top;
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int size_in_bytes = TexDecoder_GetTextureSizeInBytes(width, height, format);
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// Invalidate any existing texture covering this memory range.
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// TODO - don't delete the texture if it already exists, just replace the contents.
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TextureMngr::InvalidateRange(address, size_in_bytes);
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if (bScaleByHalf)
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{
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// Hm. Shouldn't this only scale destination, not source?
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// The bloom in Beyond Good & Evil is a good test case - due to this problem,
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// it goes very wrong. Compare by switching back and forth between Copy textures to RAM and GL Texture.
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// This also affects the shadows in Burnout 2 badly.
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width /= 2;
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height /= 2;
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}
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u16 blkW = TextureConversionShader::GetBlockWidthInTexels(format) - 1;
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u16 blkH = TextureConversionShader::GetBlockHeightInTexels(format) - 1;
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u16 samples = TextureConversionShader::GetEncodedSampleCount(format);
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// only copy on cache line boundaries
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// extra pixels are copied but not displayed in the resulting texture
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s32 expandedWidth = (width + blkW) & (~blkW);
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s32 expandedHeight = (height + blkH) & (~blkH);
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float MValueX = Renderer::GetTargetScaleX();
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float MValueY = Renderer::GetTargetScaleY();
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float top = Renderer::GetTargetHeight() - (source.top + expandedHeight) * MValueY;
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float sampleStride = bScaleByHalf?2.0f:1.0f;
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TextureConversionShader::SetShaderParameters((float)expandedWidth, expandedHeight * MValueY, source.left * MValueX, top, sampleStride * MValueX, sampleStride * MValueY);
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TargetRectangle scaledSource;
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scaledSource.top = 0;
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scaledSource.bottom = expandedHeight;
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scaledSource.left = 0;
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scaledSource.right = expandedWidth / samples;
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EncodeToRamUsingShader(texconv_shader, source_texture, scaledSource, dest_ptr, expandedWidth / samples, expandedHeight, bScaleByHalf);
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}
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void EncodeToRamYUYV(GLuint srcTexture, const TargetRectangle& sourceRc,
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u8* destAddr, int dstWidth, int dstHeight)
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{
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EncodeToRamUsingShader(s_rgbToYuyvProgram, srcTexture, sourceRc, destAddr, dstWidth / 2, dstHeight, false);
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}
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// Should be scale free.
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void DecodeToTexture(u32 xfbAddr, int srcWidth, int srcHeight, GLuint destTexture)
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{
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u8* srcAddr = Memory_GetPtr(xfbAddr);
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if (!srcAddr)
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{
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WARN_LOG(VIDEO, "Tried to decode from invalid memory address");
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return;
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}
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Renderer::ResetGLState();
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float srcFormatFactor = 0.5f;
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float srcFmtWidth = srcWidth * srcFormatFactor;
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// swich to texture converter frame buffer
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// attach destTexture as color destination
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Renderer::SetFramebuffer(s_texConvFrameBuffer);
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glBindTexture(GL_TEXTURE_RECTANGLE_ARB, destTexture);
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glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_RECTANGLE_ARB, destTexture, 0);
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GL_REPORT_FBO_ERROR();
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for (int i = 1; i < 8; ++i)
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TextureMngr::DisableStage(i);
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// activate source texture
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// set srcAddr as data for source texture
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glActiveTexture(GL_TEXTURE0);
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glEnable(GL_TEXTURE_RECTANGLE_ARB);
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glBindTexture(GL_TEXTURE_RECTANGLE_ARB, s_srcTexture);
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// TODO: make this less slow. (How?)
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glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8, (GLsizei)srcFmtWidth, (GLsizei)srcHeight, 0, GL_BGRA, GL_UNSIGNED_BYTE, srcAddr);
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glViewport(0, 0, srcWidth, srcHeight);
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glEnable(GL_FRAGMENT_PROGRAM_ARB);
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glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, s_yuyvToRgbProgram.glprogid);
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GL_REPORT_ERRORD();
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glBegin(GL_QUADS);
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glTexCoord2f(srcFmtWidth, (float)srcHeight); glVertex2f(1,-1);
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glTexCoord2f(srcFmtWidth, 0); glVertex2f(1,1);
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glTexCoord2f(0, 0); glVertex2f(-1,1);
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glTexCoord2f(0, (float)srcHeight); glVertex2f(-1,-1);
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glEnd();
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// reset state
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glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0);
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glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_RECTANGLE_ARB, 0, 0);
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TextureMngr::DisableStage(0);
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VertexShaderManager::SetViewportChanged();
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Renderer::SetFramebuffer(0);
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Renderer::RestoreGLState();
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GL_REPORT_ERRORD();
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}
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} // namespace
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