/
OGLRender.cpp
4826 lines (4058 loc) · 177 KB
/
OGLRender.cpp
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/*
Copyright (C) 2006 yopyop
Copyright (C) 2006-2007 shash
Copyright (C) 2008-2016 DeSmuME team
This file 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, either version 2 of the License, or
(at your option) any later version.
This file 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 for more details.
You should have received a copy of the GNU General Public License
along with the this software. If not, see <http://www.gnu.org/licenses/>.
*/
#include "OGLRender.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <algorithm>
#include "common.h"
#include "debug.h"
#include "NDSSystem.h"
#include "./filter/filter.h"
#include "./filter/xbrz.h"
#ifdef ENABLE_SSE2
#include <emmintrin.h>
#include "./utils/colorspacehandler/colorspacehandler_SSE2.h"
#endif
typedef struct
{
unsigned int major;
unsigned int minor;
unsigned int revision;
} OGLVersion;
static OGLVersion _OGLDriverVersion = {0, 0, 0};
// Lookup Tables
static CACHE_ALIGN GLfloat material_8bit_to_float[256] = {0};
CACHE_ALIGN const GLfloat divide5bitBy31_LUT[32] = {0.0, 0.0322580645161, 0.0645161290323, 0.0967741935484,
0.1290322580645, 0.1612903225806, 0.1935483870968, 0.2258064516129,
0.2580645161290, 0.2903225806452, 0.3225806451613, 0.3548387096774,
0.3870967741935, 0.4193548387097, 0.4516129032258, 0.4838709677419,
0.5161290322581, 0.5483870967742, 0.5806451612903, 0.6129032258065,
0.6451612903226, 0.6774193548387, 0.7096774193548, 0.7419354838710,
0.7741935483871, 0.8064516129032, 0.8387096774194, 0.8709677419355,
0.9032258064516, 0.9354838709677, 0.9677419354839, 1.0};
CACHE_ALIGN const GLfloat divide6bitBy63_LUT[64] = {0.0, 0.0158730158730, 0.0317460317460, 0.0476190476191,
0.0634920634921, 0.0793650793651, 0.0952380952381, 0.1111111111111,
0.1269841269841, 0.1428571428571, 0.1587301587302, 0.1746031746032,
0.1904761904762, 0.2063492063492, 0.2222222222222, 0.2380952380952,
0.2539682539683, 0.2698412698413, 0.2857142857143, 0.3015873015873,
0.3174603174603, 0.3333333333333, 0.3492063492064, 0.3650793650794,
0.3809523809524, 0.3968253968254, 0.4126984126984, 0.4285714285714,
0.4444444444444, 0.4603174603175, 0.4761904761905, 0.4920634920635,
0.5079365079365, 0.5238095238095, 0.5396825396825, 0.5555555555556,
0.5714285714286, 0.5873015873016, 0.6031746031746, 0.6190476190476,
0.6349206349206, 0.6507936507937, 0.6666666666667, 0.6825396825397,
0.6984126984127, 0.7142857142857, 0.7301587301587, 0.7460317460318,
0.7619047619048, 0.7777777777778, 0.7936507936508, 0.8095238095238,
0.8253968253968, 0.8412698412698, 0.8571428571429, 0.8730158730159,
0.8888888888889, 0.9047619047619, 0.9206349206349, 0.9365079365079,
0.9523809523810, 0.9682539682540, 0.9841269841270, 1.0};
const GLfloat PostprocessVtxBuffer[16] = {-1.0f, -1.0f, 1.0f, -1.0f, 1.0f, 1.0f, -1.0f, 1.0f,
0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f};
const GLubyte PostprocessElementBuffer[6] = {0, 1, 2, 2, 3, 0};
const GLenum RenderDrawList[4] = {GL_COLOR_ATTACHMENT0_EXT, GL_COLOR_ATTACHMENT1_EXT, GL_COLOR_ATTACHMENT2_EXT, GL_COLOR_ATTACHMENT3_EXT};
bool BEGINGL()
{
if(oglrender_beginOpenGL)
return oglrender_beginOpenGL();
else return true;
}
void ENDGL()
{
if(oglrender_endOpenGL)
oglrender_endOpenGL();
}
// Function Pointers
bool (*oglrender_init)() = NULL;
bool (*oglrender_beginOpenGL)() = NULL;
void (*oglrender_endOpenGL)() = NULL;
bool (*oglrender_framebufferDidResizeCallback)(size_t w, size_t h) = NULL;
void (*OGLLoadEntryPoints_3_2_Func)() = NULL;
void (*OGLCreateRenderer_3_2_Func)(OpenGLRenderer **rendererPtr) = NULL;
//------------------------------------------------------------
// Textures
#if !defined(GLX_H)
OGLEXT(PFNGLACTIVETEXTUREPROC, glActiveTexture) // Core in v1.3
OGLEXT(PFNGLACTIVETEXTUREARBPROC, glActiveTextureARB)
#endif
// Blending
OGLEXT(PFNGLBLENDFUNCSEPARATEPROC, glBlendFuncSeparate) // Core in v1.4
OGLEXT(PFNGLBLENDEQUATIONSEPARATEPROC, glBlendEquationSeparate) // Core in v2.0
OGLEXT(PFNGLBLENDFUNCSEPARATEEXTPROC, glBlendFuncSeparateEXT)
OGLEXT(PFNGLBLENDEQUATIONSEPARATEEXTPROC, glBlendEquationSeparateEXT)
// Shaders
OGLEXT(PFNGLCREATESHADERPROC, glCreateShader) // Core in v2.0
OGLEXT(PFNGLSHADERSOURCEPROC, glShaderSource) // Core in v2.0
OGLEXT(PFNGLCOMPILESHADERPROC, glCompileShader) // Core in v2.0
OGLEXT(PFNGLCREATEPROGRAMPROC, glCreateProgram) // Core in v2.0
OGLEXT(PFNGLATTACHSHADERPROC, glAttachShader) // Core in v2.0
OGLEXT(PFNGLDETACHSHADERPROC, glDetachShader) // Core in v2.0
OGLEXT(PFNGLLINKPROGRAMPROC, glLinkProgram) // Core in v2.0
OGLEXT(PFNGLUSEPROGRAMPROC, glUseProgram) // Core in v2.0
OGLEXT(PFNGLGETSHADERIVPROC, glGetShaderiv) // Core in v2.0
OGLEXT(PFNGLGETSHADERINFOLOGPROC, glGetShaderInfoLog) // Core in v2.0
OGLEXT(PFNGLDELETESHADERPROC, glDeleteShader) // Core in v2.0
OGLEXT(PFNGLDELETEPROGRAMPROC, glDeleteProgram) // Core in v2.0
OGLEXT(PFNGLGETPROGRAMIVPROC, glGetProgramiv) // Core in v2.0
OGLEXT(PFNGLGETPROGRAMINFOLOGPROC, glGetProgramInfoLog) // Core in v2.0
OGLEXT(PFNGLVALIDATEPROGRAMPROC, glValidateProgram) // Core in v2.0
OGLEXT(PFNGLGETUNIFORMLOCATIONPROC, glGetUniformLocation) // Core in v2.0
OGLEXT(PFNGLUNIFORM1IPROC, glUniform1i) // Core in v2.0
OGLEXT(PFNGLUNIFORM1IVPROC, glUniform1iv) // Core in v2.0
OGLEXT(PFNGLUNIFORM1FPROC, glUniform1f) // Core in v2.0
OGLEXT(PFNGLUNIFORM1FVPROC, glUniform1fv) // Core in v2.0
OGLEXT(PFNGLUNIFORM2FPROC, glUniform2f) // Core in v2.0
OGLEXT(PFNGLUNIFORM4FPROC, glUniform4f) // Core in v2.0
OGLEXT(PFNGLUNIFORM4FVPROC, glUniform4fv) // Core in v2.0
OGLEXT(PFNGLDRAWBUFFERSPROC, glDrawBuffers) // Core in v2.0
OGLEXT(PFNGLBINDATTRIBLOCATIONPROC, glBindAttribLocation) // Core in v2.0
OGLEXT(PFNGLENABLEVERTEXATTRIBARRAYPROC, glEnableVertexAttribArray) // Core in v2.0
OGLEXT(PFNGLDISABLEVERTEXATTRIBARRAYPROC, glDisableVertexAttribArray) // Core in v2.0
OGLEXT(PFNGLVERTEXATTRIBPOINTERPROC, glVertexAttribPointer) // Core in v2.0
// VAO
OGLEXT(PFNGLGENVERTEXARRAYSPROC, glGenVertexArrays)
OGLEXT(PFNGLDELETEVERTEXARRAYSPROC, glDeleteVertexArrays)
OGLEXT(PFNGLBINDVERTEXARRAYPROC, glBindVertexArray)
// Buffer Objects
OGLEXT(PFNGLGENBUFFERSARBPROC, glGenBuffersARB)
OGLEXT(PFNGLDELETEBUFFERSARBPROC, glDeleteBuffersARB)
OGLEXT(PFNGLBINDBUFFERARBPROC, glBindBufferARB)
OGLEXT(PFNGLBUFFERDATAARBPROC, glBufferDataARB)
OGLEXT(PFNGLBUFFERSUBDATAARBPROC, glBufferSubDataARB)
OGLEXT(PFNGLMAPBUFFERARBPROC, glMapBufferARB)
OGLEXT(PFNGLUNMAPBUFFERARBPROC, glUnmapBufferARB)
OGLEXT(PFNGLGENBUFFERSPROC, glGenBuffers) // Core in v1.5
OGLEXT(PFNGLDELETEBUFFERSPROC, glDeleteBuffers) // Core in v1.5
OGLEXT(PFNGLBINDBUFFERPROC, glBindBuffer) // Core in v1.5
OGLEXT(PFNGLBUFFERDATAPROC, glBufferData) // Core in v1.5
OGLEXT(PFNGLBUFFERSUBDATAPROC, glBufferSubData) // Core in v1.5
OGLEXT(PFNGLMAPBUFFERPROC, glMapBuffer) // Core in v1.5
OGLEXT(PFNGLUNMAPBUFFERPROC, glUnmapBuffer) // Core in v1.5
// FBO
OGLEXT(PFNGLGENFRAMEBUFFERSEXTPROC, glGenFramebuffersEXT)
OGLEXT(PFNGLBINDFRAMEBUFFEREXTPROC, glBindFramebufferEXT)
OGLEXT(PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC, glFramebufferRenderbufferEXT)
OGLEXT(PFNGLFRAMEBUFFERTEXTURE2DEXTPROC, glFramebufferTexture2DEXT)
OGLEXT(PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC, glCheckFramebufferStatusEXT)
OGLEXT(PFNGLDELETEFRAMEBUFFERSEXTPROC, glDeleteFramebuffersEXT)
OGLEXT(PFNGLBLITFRAMEBUFFEREXTPROC, glBlitFramebufferEXT)
OGLEXT(PFNGLGENRENDERBUFFERSEXTPROC, glGenRenderbuffersEXT)
OGLEXT(PFNGLBINDRENDERBUFFEREXTPROC, glBindRenderbufferEXT)
OGLEXT(PFNGLRENDERBUFFERSTORAGEEXTPROC, glRenderbufferStorageEXT)
OGLEXT(PFNGLRENDERBUFFERSTORAGEMULTISAMPLEEXTPROC, glRenderbufferStorageMultisampleEXT)
OGLEXT(PFNGLDELETERENDERBUFFERSEXTPROC, glDeleteRenderbuffersEXT)
static void OGLLoadEntryPoints_Legacy()
{
// Textures
#if !defined(GLX_H)
INITOGLEXT(PFNGLACTIVETEXTUREPROC, glActiveTexture) // Core in v1.3
INITOGLEXT(PFNGLACTIVETEXTUREARBPROC, glActiveTextureARB)
#endif
// Blending
INITOGLEXT(PFNGLBLENDFUNCSEPARATEPROC, glBlendFuncSeparate) // Core in v1.4
INITOGLEXT(PFNGLBLENDEQUATIONSEPARATEPROC, glBlendEquationSeparate) // Core in v2.0
INITOGLEXT(PFNGLBLENDFUNCSEPARATEEXTPROC, glBlendFuncSeparateEXT)
INITOGLEXT(PFNGLBLENDEQUATIONSEPARATEEXTPROC, glBlendEquationSeparateEXT)
// Shaders
INITOGLEXT(PFNGLCREATESHADERPROC, glCreateShader) // Core in v2.0
INITOGLEXT(PFNGLSHADERSOURCEPROC, glShaderSource) // Core in v2.0
INITOGLEXT(PFNGLCOMPILESHADERPROC, glCompileShader) // Core in v2.0
INITOGLEXT(PFNGLCREATEPROGRAMPROC, glCreateProgram) // Core in v2.0
INITOGLEXT(PFNGLATTACHSHADERPROC, glAttachShader) // Core in v2.0
INITOGLEXT(PFNGLDETACHSHADERPROC, glDetachShader) // Core in v2.0
INITOGLEXT(PFNGLLINKPROGRAMPROC, glLinkProgram) // Core in v2.0
INITOGLEXT(PFNGLUSEPROGRAMPROC, glUseProgram) // Core in v2.0
INITOGLEXT(PFNGLGETSHADERIVPROC, glGetShaderiv) // Core in v2.0
INITOGLEXT(PFNGLGETSHADERINFOLOGPROC, glGetShaderInfoLog) // Core in v2.0
INITOGLEXT(PFNGLDELETESHADERPROC, glDeleteShader) // Core in v2.0
INITOGLEXT(PFNGLDELETEPROGRAMPROC, glDeleteProgram) // Core in v2.0
INITOGLEXT(PFNGLGETPROGRAMIVPROC, glGetProgramiv) // Core in v2.0
INITOGLEXT(PFNGLGETPROGRAMINFOLOGPROC, glGetProgramInfoLog) // Core in v2.0
INITOGLEXT(PFNGLVALIDATEPROGRAMPROC, glValidateProgram) // Core in v2.0
INITOGLEXT(PFNGLGETUNIFORMLOCATIONPROC, glGetUniformLocation) // Core in v2.0
INITOGLEXT(PFNGLUNIFORM1IPROC, glUniform1i) // Core in v2.0
INITOGLEXT(PFNGLUNIFORM1IVPROC, glUniform1iv) // Core in v2.0
INITOGLEXT(PFNGLUNIFORM1FPROC, glUniform1f) // Core in v2.0
INITOGLEXT(PFNGLUNIFORM1FVPROC, glUniform1fv) // Core in v2.0
INITOGLEXT(PFNGLUNIFORM2FPROC, glUniform2f) // Core in v2.0
INITOGLEXT(PFNGLUNIFORM4FPROC, glUniform4f) // Core in v2.0
INITOGLEXT(PFNGLUNIFORM4FVPROC, glUniform4fv) // Core in v2.0
INITOGLEXT(PFNGLDRAWBUFFERSPROC, glDrawBuffers) // Core in v2.0
INITOGLEXT(PFNGLBINDATTRIBLOCATIONPROC, glBindAttribLocation) // Core in v2.0
INITOGLEXT(PFNGLENABLEVERTEXATTRIBARRAYPROC, glEnableVertexAttribArray) // Core in v2.0
INITOGLEXT(PFNGLDISABLEVERTEXATTRIBARRAYPROC, glDisableVertexAttribArray) // Core in v2.0
INITOGLEXT(PFNGLVERTEXATTRIBPOINTERPROC, glVertexAttribPointer) // Core in v2.0
// VAO
INITOGLEXT(PFNGLGENVERTEXARRAYSPROC, glGenVertexArrays)
INITOGLEXT(PFNGLDELETEVERTEXARRAYSPROC, glDeleteVertexArrays)
INITOGLEXT(PFNGLBINDVERTEXARRAYPROC, glBindVertexArray)
// Buffer Objects
INITOGLEXT(PFNGLGENBUFFERSARBPROC, glGenBuffersARB)
INITOGLEXT(PFNGLDELETEBUFFERSARBPROC, glDeleteBuffersARB)
INITOGLEXT(PFNGLBINDBUFFERARBPROC, glBindBufferARB)
INITOGLEXT(PFNGLBUFFERDATAARBPROC, glBufferDataARB)
INITOGLEXT(PFNGLBUFFERSUBDATAARBPROC, glBufferSubDataARB)
INITOGLEXT(PFNGLMAPBUFFERARBPROC, glMapBufferARB)
INITOGLEXT(PFNGLUNMAPBUFFERARBPROC, glUnmapBufferARB)
INITOGLEXT(PFNGLGENBUFFERSPROC, glGenBuffers) // Core in v1.5
INITOGLEXT(PFNGLDELETEBUFFERSPROC, glDeleteBuffers) // Core in v1.5
INITOGLEXT(PFNGLBINDBUFFERPROC, glBindBuffer) // Core in v1.5
INITOGLEXT(PFNGLBUFFERDATAPROC, glBufferData) // Core in v1.5
INITOGLEXT(PFNGLBUFFERSUBDATAPROC, glBufferSubData) // Core in v1.5
INITOGLEXT(PFNGLMAPBUFFERPROC, glMapBuffer) // Core in v1.5
INITOGLEXT(PFNGLUNMAPBUFFERPROC, glUnmapBuffer) // Core in v1.5
// FBO
INITOGLEXT(PFNGLGENFRAMEBUFFERSEXTPROC, glGenFramebuffersEXT)
INITOGLEXT(PFNGLBINDFRAMEBUFFEREXTPROC, glBindFramebufferEXT)
INITOGLEXT(PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC, glFramebufferRenderbufferEXT)
INITOGLEXT(PFNGLFRAMEBUFFERTEXTURE2DEXTPROC, glFramebufferTexture2DEXT)
INITOGLEXT(PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC, glCheckFramebufferStatusEXT)
INITOGLEXT(PFNGLDELETEFRAMEBUFFERSEXTPROC, glDeleteFramebuffersEXT)
INITOGLEXT(PFNGLBLITFRAMEBUFFEREXTPROC, glBlitFramebufferEXT)
INITOGLEXT(PFNGLGENRENDERBUFFERSEXTPROC, glGenRenderbuffersEXT)
INITOGLEXT(PFNGLBINDRENDERBUFFEREXTPROC, glBindRenderbufferEXT)
INITOGLEXT(PFNGLRENDERBUFFERSTORAGEEXTPROC, glRenderbufferStorageEXT)
INITOGLEXT(PFNGLRENDERBUFFERSTORAGEMULTISAMPLEEXTPROC, glRenderbufferStorageMultisampleEXT)
INITOGLEXT(PFNGLDELETERENDERBUFFERSEXTPROC, glDeleteRenderbuffersEXT)
}
// Vertex Shader GLSL 1.00
static const char *vertexShader_100 = {"\
attribute vec4 inPosition; \n\
attribute vec2 inTexCoord0; \n\
attribute vec3 inColor; \n\
\n\
uniform float polyAlpha; \n\
uniform vec2 polyTexScale; \n\
\n\
varying vec4 vtxPosition; \n\
varying vec2 vtxTexCoord; \n\
varying vec4 vtxColor; \n\
\n\
void main() \n\
{ \n\
mat2 texScaleMtx = mat2( vec2(polyTexScale.x, 0.0), \n\
vec2( 0.0, polyTexScale.y)); \n\
\n\
vtxPosition = inPosition; \n\
vtxTexCoord = texScaleMtx * inTexCoord0; \n\
vtxColor = vec4(inColor * 4.0, polyAlpha); \n\
\n\
gl_Position = vtxPosition; \n\
} \n\
"};
// Fragment Shader GLSL 1.00
static const char *fragmentShader_100 = {"\
varying vec4 vtxPosition;\n\
varying vec2 vtxTexCoord;\n\
varying vec4 vtxColor;\n\
\n\
uniform sampler2D texRenderObject;\n\
uniform sampler1D texToonTable;\n\
\n\
uniform int stateToonShadingMode;\n\
uniform bool stateEnableAlphaTest;\n\
uniform bool stateEnableAntialiasing;\n\
uniform bool stateEnableEdgeMarking;\n\
uniform bool stateUseWDepth;\n\
uniform float stateAlphaTestRef;\n\
\n\
uniform int polyMode;\n\
uniform bool polyIsTranslucent;\n\
uniform bool polySetNewDepthForTranslucent;\n\
uniform int polyID;\n\
\n\
uniform bool polyEnableTexture;\n\
uniform bool polyEnableFog;\n\
uniform bool texDrawOpaque;\n\
uniform bool texSingleBitAlpha;\n\
\n\
uniform bool polyDrawShadow;\n\
\n\
vec3 packVec3FromFloat(const float value)\n\
{\n\
float expandedValue = value * 16777215.0;\n\
vec3 packedValue = vec3( fract(expandedValue/256.0), fract(((expandedValue/256.0) - fract(expandedValue/256.0)) / 256.0), fract(((expandedValue/65536.0) - fract(expandedValue/65536.0)) / 256.0) );\n\
return packedValue;\n\
}\n\
\n\
void main()\n\
{\n\
vec4 newFragColor = vec4(0.0, 0.0, 0.0, 0.0);\n\
vec4 newPolyID = vec4(0.0, 0.0, 0.0, 0.0);\n\
vec4 newFogAttributes = vec4(0.0, 0.0, 0.0, 0.0);\n\
vec4 newFragDepth = vec4(0.0, 0.0, 0.0, 0.0);\n\
\n\
float vertW = (vtxPosition.w == 0.0) ? 0.00000001 : vtxPosition.w;\n\
// hack: when using z-depth, drop some LSBs so that the overworld map in Dragon Quest IV shows up correctly\n\
float newFragDepthValue = (stateUseWDepth) ? vtxPosition.w/4096.0 : clamp( (floor((((vtxPosition.z/vertW) * 0.5 + 0.5) * 16777215.0) / 4.0) * 4.0) / 16777215.0, 0.0, 1.0);\n\
\n\
if ((polyMode != 3) || polyDrawShadow)\n\
{\n\
vec4 mainTexColor = (polyEnableTexture) ? texture2D(texRenderObject, vtxTexCoord) : vec4(1.0, 1.0, 1.0, 1.0);\n\
\n\
if (texSingleBitAlpha)\n\
{\n\
if (mainTexColor.a < 0.500)\n\
{\n\
mainTexColor.a = 0.0;\n\
}\n\
else\n\
{\n\
mainTexColor.rgb = mainTexColor.rgb / mainTexColor.a;\n\
mainTexColor.a = 1.0;\n\
}\n\
}\n\
else\n\
{\n\
if (texDrawOpaque)\n\
{\n\
if ( (polyMode != 1) && (mainTexColor.a <= 0.999) )\n\
{\n\
discard;\n\
}\n\
}\n\
}\n\
\n\
newFragColor = mainTexColor * vtxColor;\n\
\n\
if(polyMode == 1)\n\
{\n\
newFragColor.rgb = (polyEnableTexture) ? mix(vtxColor.rgb, mainTexColor.rgb, mainTexColor.a) : vtxColor.rgb;\n\
newFragColor.a = vtxColor.a;\n\
}\n\
else if(polyMode == 2)\n\
{\n\
vec3 toonColor = vec3(texture1D(texToonTable, vtxColor.r).rgb);\n\
newFragColor.rgb = (stateToonShadingMode == 0) ? mainTexColor.rgb * toonColor.rgb : min((mainTexColor.rgb * vtxColor.r) + toonColor.rgb, 1.0);\n\
}\n\
else if(polyMode == 3)\n\
{\n\
newFragColor = vtxColor;\n\
}\n\
\n\
if (newFragColor.a < 0.001 || (stateEnableAlphaTest && newFragColor.a < stateAlphaTestRef))\n\
{\n\
discard;\n\
}\n\
\n\
if ( (newFragColor.a > 0.999) || polySetNewDepthForTranslucent )\n\
{\n\
newFragDepth = vec4(packVec3FromFloat(newFragDepthValue), 1.0);\n\
}\n\
\n\
newPolyID = vec4(float(polyID)/63.0, 0.0, 0.0, float(newFragColor.a > 0.999));\n\
newFogAttributes = vec4(float(polyEnableFog), 0.0, 0.0, float((newFragColor.a > 0.999) ? 1.0 : 0.5));\n\
}\n\
\n\
gl_FragData[0] = newFragColor;\n\
gl_FragData[1] = newFragDepth;\n\
gl_FragData[2] = newPolyID;\n\
gl_FragData[3] = newFogAttributes;\n\
gl_FragDepth = newFragDepthValue;\n\
}\n\
"};
// Vertex shader for applying edge marking, GLSL 1.00
static const char *EdgeMarkVtxShader_100 = {"\
attribute vec2 inPosition;\n\
attribute vec2 inTexCoord0;\n\
uniform vec2 framebufferSize;\n\
varying vec2 texCoord[5];\n\
\n\
void main()\n\
{\n\
vec2 texInvScale = vec2(1.0/framebufferSize.x, 1.0/framebufferSize.y);\n\
\n\
texCoord[0] = inTexCoord0; // Center\n\
texCoord[1] = inTexCoord0 + (vec2( 1.0, 0.0) * texInvScale); // Right\n\
texCoord[2] = inTexCoord0 + (vec2( 0.0, 1.0) * texInvScale); // Down\n\
texCoord[3] = inTexCoord0 + (vec2(-1.0, 0.0) * texInvScale); // Left\n\
texCoord[4] = inTexCoord0 + (vec2( 0.0,-1.0) * texInvScale); // Up\n\
\n\
gl_Position = vec4(inPosition, 0.0, 1.0);\n\
}\n\
"};
// Fragment shader for applying edge marking, GLSL 1.00
static const char *EdgeMarkFragShader_100 = {"\
varying vec2 texCoord[5];\n\
\n\
uniform sampler2D texInFragDepth;\n\
uniform sampler2D texInPolyID;\n\
uniform vec4 stateEdgeColor[8];\n\
\n\
float unpackFloatFromVec3(const vec3 value)\n\
{\n\
const vec3 unpackRatio = vec3(256.0, 65536.0, 16777216.0);\n\
return (dot(value, unpackRatio) / 16777215.0);\n\
}\n\
\n\
void main()\n\
{\n\
int polyID[5];\n\
polyID[0] = int((texture2D(texInPolyID, texCoord[0]).r * 63.0) + 0.5);\n\
polyID[1] = int((texture2D(texInPolyID, texCoord[1]).r * 63.0) + 0.5);\n\
polyID[2] = int((texture2D(texInPolyID, texCoord[2]).r * 63.0) + 0.5);\n\
polyID[3] = int((texture2D(texInPolyID, texCoord[3]).r * 63.0) + 0.5);\n\
polyID[4] = int((texture2D(texInPolyID, texCoord[4]).r * 63.0) + 0.5);\n\
\n\
float depth[5];\n\
depth[0] = unpackFloatFromVec3(texture2D(texInFragDepth, texCoord[0]).rgb);\n\
depth[1] = unpackFloatFromVec3(texture2D(texInFragDepth, texCoord[1]).rgb);\n\
depth[2] = unpackFloatFromVec3(texture2D(texInFragDepth, texCoord[2]).rgb);\n\
depth[3] = unpackFloatFromVec3(texture2D(texInFragDepth, texCoord[3]).rgb);\n\
depth[4] = unpackFloatFromVec3(texture2D(texInFragDepth, texCoord[4]).rgb);\n\
\n\
vec4 edgeColor = vec4(0.0, 0.0, 0.0, 0.0);\n\
\n\
for (int i = 1; i < 5; i++)\n\
{\n\
if (polyID[0] != polyID[i] && depth[0] >= depth[i])\n\
{\n\
edgeColor = stateEdgeColor[polyID[i]/8];\n\
break;\n\
}\n\
}\n\
\n\
gl_FragData[0] = edgeColor;\n\
}\n\
"};
// Vertex shader for applying fog, GLSL 1.00
static const char *FogVtxShader_100 = {"\
attribute vec2 inPosition;\n\
attribute vec2 inTexCoord0;\n\
varying vec2 texCoord;\n\
\n\
void main() \n\
{ \n\
texCoord = inTexCoord0; \n\
gl_Position = vec4(inPosition, 0.0, 1.0);\n\
}\n\
"};
// Fragment shader for applying fog, GLSL 1.00
static const char *FogFragShader_100 = {"\
varying vec2 texCoord;\n\
\n\
uniform sampler2D texInFragColor;\n\
uniform sampler2D texInFragDepth;\n\
uniform sampler2D texInFogAttributes;\n\
uniform bool stateEnableFogAlphaOnly;\n\
uniform vec4 stateFogColor;\n\
uniform float stateFogDensity[32];\n\
uniform float stateFogOffset;\n\
uniform float stateFogStep;\n\
\n\
float unpackFloatFromVec3(const vec3 value)\n\
{\n\
const vec3 unpackRatio = vec3(256.0, 65536.0, 16777216.0);\n\
return (dot(value, unpackRatio) / 16777215.0);\n\
}\n\
\n\
void main()\n\
{\n\
vec4 inFragColor = texture2D(texInFragColor, texCoord);\n\
vec4 inFogAttributes = texture2D(texInFogAttributes, texCoord);\n\
bool polyEnableFog = (inFogAttributes.r > 0.999);\n\
vec4 newFoggedColor = inFragColor;\n\
\n\
if (polyEnableFog)\n\
{\n\
float inFragDepth = unpackFloatFromVec3(texture2D(texInFragDepth, texCoord).rgb);\n\
float fogMixWeight = 0.0;\n\
\n\
if (inFragDepth <= min(stateFogOffset + stateFogStep, 1.0))\n\
{\n\
fogMixWeight = stateFogDensity[0];\n\
}\n\
else if (inFragDepth >= min(stateFogOffset + (stateFogStep*32.0), 1.0))\n\
{\n\
fogMixWeight = stateFogDensity[31];\n\
}\n\
else\n\
{\n\
for (int i = 1; i < 32; i++)\n\
{\n\
float currentFogStep = min(stateFogOffset + (stateFogStep * float(i+1)), 1.0);\n\
if (inFragDepth <= currentFogStep)\n\
{\n\
float previousFogStep = min(stateFogOffset + (stateFogStep * float(i)), 1.0);\n\
fogMixWeight = mix(stateFogDensity[i-1], stateFogDensity[i], (inFragDepth - previousFogStep) / (currentFogStep - previousFogStep));\n\
break;\n\
}\n\
}\n\
}\n\
\n\
newFoggedColor = mix(inFragColor, (stateEnableFogAlphaOnly) ? vec4(inFragColor.rgb, stateFogColor.a) : stateFogColor, fogMixWeight);\n\
}\n\
\n\
gl_FragData[0] = newFoggedColor;\n\
}\n\
"};
// Vertex shader for the final framebuffer, GLSL 1.00
static const char *FramebufferOutputVtxShader_100 = {"\
attribute vec2 inPosition;\n\
attribute vec2 inTexCoord0;\n\
varying vec2 texCoord;\n\
\n\
void main()\n\
{\n\
texCoord = inTexCoord0;\n\
gl_Position = vec4(inPosition, 0.0, 1.0);\n\
}\n\
"};
// Fragment shader for the final RGBA6665 formatted framebuffer, GLSL 1.00
static const char *FramebufferOutputRGBA6665FragShader_100 = {"\
varying vec2 texCoord;\n\
\n\
uniform sampler2D texInFragColor;\n\
\n\
void main()\n\
{\n\
// Note that we swap B and R since pixel readbacks are done in BGRA format for fastest\n\
// performance. The final color is still in RGBA format.\n\
vec4 colorRGBA6665 = texture2D(texInFragColor, texCoord).bgra;\n\
colorRGBA6665 = floor((colorRGBA6665 * 255.0) + 0.5);\n\
colorRGBA6665.rgb = floor(colorRGBA6665.rgb / 4.0);\n\
colorRGBA6665.a = floor(colorRGBA6665.a / 8.0);\n\
\n\
gl_FragData[0] = (colorRGBA6665 / 255.0);\n\
}\n\
"};
// Fragment shader for the final RGBA8888 formatted framebuffer, GLSL 1.00
static const char *FramebufferOutputRGBA8888FragShader_100 = {"\
varying vec2 texCoord;\n\
\n\
uniform sampler2D texInFragColor;\n\
\n\
void main()\n\
{\n\
gl_FragData[0] = texture2D(texInFragColor, texCoord).bgra;\n\
}\n\
"};
bool IsVersionSupported(unsigned int checkVersionMajor, unsigned int checkVersionMinor, unsigned int checkVersionRevision)
{
bool result = false;
if ( (_OGLDriverVersion.major > checkVersionMajor) ||
(_OGLDriverVersion.major >= checkVersionMajor && _OGLDriverVersion.minor > checkVersionMinor) ||
(_OGLDriverVersion.major >= checkVersionMajor && _OGLDriverVersion.minor >= checkVersionMinor && _OGLDriverVersion.revision >= checkVersionRevision) )
{
result = true;
}
return result;
}
static void OGLGetDriverVersion(const char *oglVersionString,
unsigned int *versionMajor,
unsigned int *versionMinor,
unsigned int *versionRevision)
{
size_t versionStringLength = 0;
if (oglVersionString == NULL)
{
return;
}
// First, check for the dot in the revision string. There should be at
// least one present.
const char *versionStrEnd = strstr(oglVersionString, ".");
if (versionStrEnd == NULL)
{
return;
}
// Next, check for the space before the vendor-specific info (if present).
versionStrEnd = strstr(oglVersionString, " ");
if (versionStrEnd == NULL)
{
// If a space was not found, then the vendor-specific info is not present,
// and therefore the entire string must be the version number.
versionStringLength = strlen(oglVersionString);
}
else
{
// If a space was found, then the vendor-specific info is present,
// and therefore the version number is everything before the space.
versionStringLength = versionStrEnd - oglVersionString;
}
// Copy the version substring and parse it.
char *versionSubstring = (char *)malloc(versionStringLength * sizeof(char));
strncpy(versionSubstring, oglVersionString, versionStringLength);
unsigned int major = 0;
unsigned int minor = 0;
unsigned int revision = 0;
sscanf(versionSubstring, "%u.%u.%u", &major, &minor, &revision);
free(versionSubstring);
versionSubstring = NULL;
if (versionMajor != NULL)
{
*versionMajor = major;
}
if (versionMinor != NULL)
{
*versionMinor = minor;
}
if (versionRevision != NULL)
{
*versionRevision = revision;
}
}
OpenGLTexture::OpenGLTexture(u32 texAttributes, u32 palAttributes) : Render3DTexture(texAttributes, palAttributes)
{
_cacheSize = GetUnpackSizeUsingFormat(TexFormat_32bpp);
_invSizeS = 1.0f / (float)_sizeS;
_invSizeT = 1.0f / (float)_sizeT;
_upscaleBuffer = NULL;
glGenTextures(1, &_texID);
}
OpenGLTexture::~OpenGLTexture()
{
glDeleteTextures(1, &this->_texID);
}
void OpenGLTexture::Load(bool isNewTexture)
{
u32 *textureSrc = (u32 *)this->_deposterizeSrcSurface.Surface;
this->Unpack<TexFormat_32bpp>(textureSrc);
if (this->_useDeposterize)
{
RenderDeposterize(this->_deposterizeSrcSurface, this->_deposterizeDstSurface);
}
glBindTexture(GL_TEXTURE_2D, this->_texID);
switch (this->_scalingFactor)
{
case 1:
{
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
if (isNewTexture)
{
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, this->_sizeS, this->_sizeT, 0, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, textureSrc);
}
else
{
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, this->_sizeS, this->_sizeT, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, textureSrc);
}
break;
}
case 2:
{
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 1);
this->_Upscale<2>(textureSrc, this->_upscaleBuffer);
if (isNewTexture)
{
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, this->_sizeS*2, this->_sizeT*2, 0, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, this->_upscaleBuffer);
glTexImage2D(GL_TEXTURE_2D, 1, GL_RGBA, this->_sizeS*1, this->_sizeT*1, 0, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, textureSrc);
}
else
{
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, this->_sizeS*2, this->_sizeT*2, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, this->_upscaleBuffer);
glTexSubImage2D(GL_TEXTURE_2D, 1, 0, 0, this->_sizeS*1, this->_sizeT*1, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, textureSrc);
}
break;
}
case 4:
{
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 2);
this->_Upscale<4>(textureSrc, this->_upscaleBuffer);
if (isNewTexture)
{
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, this->_sizeS*4, this->_sizeT*4, 0, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, this->_upscaleBuffer);
this->_Upscale<2>(textureSrc, this->_upscaleBuffer);
glTexImage2D(GL_TEXTURE_2D, 1, GL_RGBA, this->_sizeS*2, this->_sizeT*2, 0, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, this->_upscaleBuffer);
glTexImage2D(GL_TEXTURE_2D, 2, GL_RGBA, this->_sizeS*1, this->_sizeT*1, 0, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, textureSrc);
}
else
{
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, this->_sizeS*4, this->_sizeT*4, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, this->_upscaleBuffer);
this->_Upscale<2>(textureSrc, this->_upscaleBuffer);
glTexSubImage2D(GL_TEXTURE_2D, 1, 0, 0, this->_sizeS*2, this->_sizeT*2, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, this->_upscaleBuffer);
glTexSubImage2D(GL_TEXTURE_2D, 2, 0, 0, this->_sizeS*1, this->_sizeT*1, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, textureSrc);
}
break;
}
default:
break;
}
this->_isLoadNeeded = false;
}
GLuint OpenGLTexture::GetID() const
{
return this->_texID;
}
GLfloat OpenGLTexture::GetInvWidth() const
{
return this->_invSizeS;
}
GLfloat OpenGLTexture::GetInvHeight() const
{
return this->_invSizeT;
}
void OpenGLTexture::SetUnpackBuffer(void *unpackBuffer)
{
this->_deposterizeSrcSurface.Surface = (unsigned char *)unpackBuffer;
}
void OpenGLTexture::SetDeposterizeBuffer(void *dstBuffer, void *workingBuffer)
{
this->_deposterizeDstSurface.Surface = (unsigned char *)dstBuffer;
this->_deposterizeDstSurface.workingSurface[0] = (unsigned char *)workingBuffer;
}
void OpenGLTexture::SetUpscalingBuffer(void *upscaleBuffer)
{
this->_upscaleBuffer = (u32 *)upscaleBuffer;
}
template<bool require_profile, bool enable_3_2>
static Render3D* OpenGLRendererCreate()
{
OpenGLRenderer *newRenderer = NULL;
Render3DError error = OGLERROR_NOERR;
if (oglrender_init == NULL)
{
return NULL;
}
if (!oglrender_init())
{
return NULL;
}
if (!BEGINGL())
{
INFO("OpenGL<%s,%s>: Could not initialize -- BEGINGL() failed.\n",require_profile?"force":"auto",enable_3_2?"3_2":"old");
return NULL;
}
// Get OpenGL info
const char *oglVersionString = (const char *)glGetString(GL_VERSION);
const char *oglVendorString = (const char *)glGetString(GL_VENDOR);
const char *oglRendererString = (const char *)glGetString(GL_RENDERER);
// Writing to gl_FragDepth causes the driver to fail miserably on systems equipped
// with a Intel G965 graphic card. Warn the user and fail gracefully.
// http://forums.desmume.org/viewtopic.php?id=9286
if(!strcmp(oglVendorString,"Intel") && strstr(oglRendererString,"965"))
{
INFO("OpenGL: Incompatible graphic card detected. Disabling OpenGL support.\n");
ENDGL();
return newRenderer;
}
// Check the driver's OpenGL version
OGLGetDriverVersion(oglVersionString, &_OGLDriverVersion.major, &_OGLDriverVersion.minor, &_OGLDriverVersion.revision);
if (!IsVersionSupported(OGLRENDER_MINIMUM_DRIVER_VERSION_REQUIRED_MAJOR, OGLRENDER_MINIMUM_DRIVER_VERSION_REQUIRED_MINOR, OGLRENDER_MINIMUM_DRIVER_VERSION_REQUIRED_REVISION))
{
INFO("OpenGL: Driver does not support OpenGL v%u.%u.%u or later. Disabling 3D renderer.\n[ Driver Info -\n Version: %s\n Vendor: %s\n Renderer: %s ]\n",
OGLRENDER_MINIMUM_DRIVER_VERSION_REQUIRED_MAJOR, OGLRENDER_MINIMUM_DRIVER_VERSION_REQUIRED_MINOR, OGLRENDER_MINIMUM_DRIVER_VERSION_REQUIRED_REVISION,
oglVersionString, oglVendorString, oglRendererString);
ENDGL();
return newRenderer;
}
// Create new OpenGL rendering object
if (enable_3_2)
{
if (OGLLoadEntryPoints_3_2_Func != NULL && OGLCreateRenderer_3_2_Func != NULL)
{
OGLLoadEntryPoints_3_2_Func();
OGLLoadEntryPoints_Legacy(); //zero 04-feb-2013 - this seems to be necessary as well
OGLCreateRenderer_3_2_Func(&newRenderer);
}
else
{
if(require_profile)
{
ENDGL();
return newRenderer;
}
}
}
// If the renderer doesn't initialize with OpenGL v3.2 or higher, fall back
// to one of the lower versions.
if (newRenderer == NULL)
{
OGLLoadEntryPoints_Legacy();
if (IsVersionSupported(2, 1, 0))
{
newRenderer = new OpenGLRenderer_2_1;
newRenderer->SetVersion(2, 1, 0);
}
else if (IsVersionSupported(2, 0, 0))
{
newRenderer = new OpenGLRenderer_2_0;
newRenderer->SetVersion(2, 0, 0);
}
else if (IsVersionSupported(1, 5, 0))
{
newRenderer = new OpenGLRenderer_1_5;
newRenderer->SetVersion(1, 5, 0);
}
else if (IsVersionSupported(1, 4, 0))
{
newRenderer = new OpenGLRenderer_1_4;
newRenderer->SetVersion(1, 4, 0);
}
else if (IsVersionSupported(1, 3, 0))
{
newRenderer = new OpenGLRenderer_1_3;
newRenderer->SetVersion(1, 3, 0);
}
else if (IsVersionSupported(1, 2, 0))
{
newRenderer = new OpenGLRenderer_1_2;
newRenderer->SetVersion(1, 2, 0);
}
}
if (newRenderer == NULL)
{
INFO("OpenGL: Renderer did not initialize. Disabling 3D renderer.\n[ Driver Info -\n Version: %s\n Vendor: %s\n Renderer: %s ]\n",
oglVersionString, oglVendorString, oglRendererString);
ENDGL();
return newRenderer;
}
// Initialize OpenGL extensions
error = newRenderer->InitExtensions();
if (error != OGLERROR_NOERR)
{
if ( IsVersionSupported(2, 0, 0) &&
(error == OGLERROR_SHADER_CREATE_ERROR ||
error == OGLERROR_VERTEX_SHADER_PROGRAM_LOAD_ERROR ||
error == OGLERROR_FRAGMENT_SHADER_PROGRAM_LOAD_ERROR) )
{
INFO("OpenGL: Shaders are not working, even though they should be. Disabling 3D renderer.\n");
delete newRenderer;
newRenderer = NULL;
ENDGL();
return newRenderer;
}
else if (IsVersionSupported(3, 0, 0) && error == OGLERROR_FBO_CREATE_ERROR && OGLLoadEntryPoints_3_2_Func != NULL)
{
INFO("OpenGL: FBOs are not working, even though they should be. Disabling 3D renderer.\n");
delete newRenderer;
newRenderer = NULL;
ENDGL();
return newRenderer;
}
}
ENDGL();
// Initialization finished -- reset the renderer
newRenderer->Reset();
unsigned int major = 0;
unsigned int minor = 0;
unsigned int revision = 0;
newRenderer->GetVersion(&major, &minor, &revision);
INFO("OpenGL: Renderer initialized successfully (v%u.%u.%u).\n[ Driver Info -\n Version: %s\n Vendor: %s\n Renderer: %s ]\n",
major, minor, revision, oglVersionString, oglVendorString, oglRendererString);
return newRenderer;
}
static void OpenGLRendererDestroy()
{
if(!BEGINGL())
return;
if (CurrentRenderer != BaseRenderer)
{
OpenGLRenderer *oldRenderer = (OpenGLRenderer *)CurrentRenderer;
CurrentRenderer = BaseRenderer;
delete oldRenderer;
}
ENDGL();
}
//automatically select 3.2 or old profile depending on whether 3.2 is available
GPU3DInterface gpu3Dgl = {
"OpenGL",
OpenGLRendererCreate<false,true>,
OpenGLRendererDestroy
};
//forcibly use old profile
GPU3DInterface gpu3DglOld = {
"OpenGL Old",
OpenGLRendererCreate<true,false>,
OpenGLRendererDestroy
};
//forcibly use new profile
GPU3DInterface gpu3Dgl_3_2 = {
"OpenGL 3.2",
OpenGLRendererCreate<true,true>,
OpenGLRendererDestroy
};
OpenGLRenderer::OpenGLRenderer()
{
_deviceInfo.renderID = RENDERID_OPENGL_AUTO;
_deviceInfo.renderName = "OpenGL";
_deviceInfo.isTexturingSupported = true;
_deviceInfo.isEdgeMarkSupported = true;