| 1 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 2 | * Mupen64plus - OGLCombiner.cpp * |
| 3 | * Mupen64Plus homepage: http://code.google.com/p/mupen64plus/ * |
| 4 | * Copyright (C) 2003 Rice1964 * |
| 5 | * * |
| 6 | * This program is free software; you can redistribute it and/or modify * |
| 7 | * it under the terms of the GNU General Public License as published by * |
| 8 | * the Free Software Foundation; either version 2 of the License, or * |
| 9 | * (at your option) any later version. * |
| 10 | * * |
| 11 | * This program is distributed in the hope that it will be useful, * |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
| 14 | * GNU General Public License for more details. * |
| 15 | * * |
| 16 | * You should have received a copy of the GNU General Public License * |
| 17 | * along with this program; if not, write to the * |
| 18 | * Free Software Foundation, Inc., * |
| 19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * |
| 20 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 21 | |
| 22 | #include "osal_opengl.h" |
| 23 | |
| 24 | #include "OGLCombiner.h" |
| 25 | #include "OGLDebug.h" |
| 26 | #include "OGLRender.h" |
| 27 | #include "OGLGraphicsContext.h" |
| 28 | #include "OGLDecodedMux.h" |
| 29 | #include "OGLTexture.h" |
| 30 | |
| 31 | //======================================================================== |
| 32 | uint32 DirectX_OGL_BlendFuncMaps [] = |
| 33 | { |
| 34 | GL_SRC_ALPHA, //Nothing |
| 35 | GL_ZERO, //BLEND_ZERO = 1, |
| 36 | GL_ONE, //BLEND_ONE = 2, |
| 37 | GL_SRC_COLOR, //BLEND_SRCCOLOR = 3, |
| 38 | GL_ONE_MINUS_SRC_COLOR, //BLEND_INVSRCCOLOR = 4, |
| 39 | GL_SRC_ALPHA, //BLEND_SRCALPHA = 5, |
| 40 | GL_ONE_MINUS_SRC_ALPHA, //BLEND_INVSRCALPHA = 6, |
| 41 | GL_DST_ALPHA, //BLEND_DESTALPHA = 7, |
| 42 | GL_ONE_MINUS_DST_ALPHA, //BLEND_INVDESTALPHA = 8, |
| 43 | GL_DST_COLOR, //BLEND_DESTCOLOR = 9, |
| 44 | GL_ONE_MINUS_DST_COLOR, //BLEND_INVDESTCOLOR = 10, |
| 45 | GL_SRC_ALPHA_SATURATE, //BLEND_SRCALPHASAT = 11, |
| 46 | GL_SRC_ALPHA_SATURATE, //BLEND_BOTHSRCALPHA = 12, |
| 47 | GL_SRC_ALPHA_SATURATE, //BLEND_BOTHINVSRCALPHA = 13, |
| 48 | }; |
| 49 | |
| 50 | //======================================================================== |
| 51 | COGLColorCombiner::COGLColorCombiner(CRender *pRender) : |
| 52 | CColorCombiner(pRender), |
| 53 | m_pOGLRender((OGLRender*)pRender), |
| 54 | m_bSupportAdd(false), m_bSupportSubtract(false) |
| 55 | { |
| 56 | m_pDecodedMux = new COGLDecodedMux; |
| 57 | m_pDecodedMux->m_maxConstants = 0; |
| 58 | m_pDecodedMux->m_maxTextures = 1; |
| 59 | } |
| 60 | |
| 61 | COGLColorCombiner::~COGLColorCombiner() |
| 62 | { |
| 63 | delete m_pDecodedMux; |
| 64 | m_pDecodedMux = NULL; |
| 65 | } |
| 66 | |
| 67 | bool COGLColorCombiner::Initialize(void) |
| 68 | { |
| 69 | m_bSupportAdd = false; |
| 70 | m_bSupportSubtract = false; |
| 71 | m_supportedStages = 1; |
| 72 | m_bSupportMultiTexture = false; |
| 73 | |
| 74 | COGLGraphicsContext *pcontext = (COGLGraphicsContext *)(CGraphicsContext::g_pGraphicsContext); |
| 75 | if( pcontext->IsExtensionSupported(OSAL_GL_ARB_TEXTURE_ENV_ADD) || pcontext->IsExtensionSupported("GL_EXT_texture_env_add") ) |
| 76 | { |
| 77 | m_bSupportAdd = true; |
| 78 | } |
| 79 | |
| 80 | if( pcontext->IsExtensionSupported("GL_EXT_blend_subtract") ) |
| 81 | { |
| 82 | m_bSupportSubtract = true; |
| 83 | } |
| 84 | |
| 85 | return true; |
| 86 | } |
| 87 | |
| 88 | void COGLColorCombiner::DisableCombiner(void) |
| 89 | { |
| 90 | m_pOGLRender->DisableMultiTexture(); |
| 91 | glEnable(GL_BLEND); |
| 92 | OPENGL_CHECK_ERRORS; |
| 93 | glBlendFunc(GL_ONE, GL_ZERO); |
| 94 | OPENGL_CHECK_ERRORS; |
| 95 | |
| 96 | if( m_bTexelsEnable ) |
| 97 | { |
| 98 | COGLTexture* pTexture = g_textures[gRSP.curTile].m_pCOGLTexture; |
| 99 | if( pTexture ) |
| 100 | { |
| 101 | m_pOGLRender->EnableTexUnit(0,TRUE); |
| 102 | m_pOGLRender->BindTexture(pTexture->m_dwTextureName, 0); |
| 103 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); |
| 104 | OPENGL_CHECK_ERRORS; |
| 105 | m_pOGLRender->SetAllTexelRepeatFlag(); |
| 106 | } |
| 107 | #ifdef DEBUGGER |
| 108 | else |
| 109 | { |
| 110 | DebuggerAppendMsg("Check me, texture is NULL but it is enabled"); |
| 111 | } |
| 112 | #endif |
| 113 | } |
| 114 | else |
| 115 | { |
| 116 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); |
| 117 | OPENGL_CHECK_ERRORS; |
| 118 | m_pOGLRender->EnableTexUnit(0,FALSE); |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | void COGLColorCombiner::InitCombinerCycleCopy(void) |
| 123 | { |
| 124 | m_pOGLRender->DisableMultiTexture(); |
| 125 | m_pOGLRender->EnableTexUnit(0,TRUE); |
| 126 | COGLTexture* pTexture = g_textures[gRSP.curTile].m_pCOGLTexture; |
| 127 | if( pTexture ) |
| 128 | { |
| 129 | m_pOGLRender->BindTexture(pTexture->m_dwTextureName, 0); |
| 130 | m_pOGLRender->SetTexelRepeatFlags(gRSP.curTile); |
| 131 | } |
| 132 | #ifdef DEBUGGER |
| 133 | else |
| 134 | { |
| 135 | DebuggerAppendMsg("Check me, texture is NULL"); |
| 136 | } |
| 137 | #endif |
| 138 | |
| 139 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); |
| 140 | OPENGL_CHECK_ERRORS; |
| 141 | } |
| 142 | |
| 143 | void COGLColorCombiner::InitCombinerCycleFill(void) |
| 144 | { |
| 145 | m_pOGLRender->DisableMultiTexture(); |
| 146 | m_pOGLRender->EnableTexUnit(0,FALSE); |
| 147 | } |
| 148 | |
| 149 | |
| 150 | void COGLColorCombiner::InitCombinerCycle12(void) |
| 151 | { |
| 152 | m_pOGLRender->DisableMultiTexture(); |
| 153 | if( !m_bTexelsEnable ) |
| 154 | { |
| 155 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); |
| 156 | OPENGL_CHECK_ERRORS; |
| 157 | m_pOGLRender->EnableTexUnit(0,FALSE); |
| 158 | return; |
| 159 | } |
| 160 | |
| 161 | #if SDL_VIDEO_OPENGL |
| 162 | uint32 mask = 0x1f; |
| 163 | COGLTexture* pTexture = g_textures[gRSP.curTile].m_pCOGLTexture; |
| 164 | if( pTexture ) |
| 165 | { |
| 166 | m_pOGLRender->EnableTexUnit(0,TRUE); |
| 167 | m_pOGLRender->BindTexture(pTexture->m_dwTextureName, 0); |
| 168 | m_pOGLRender->SetAllTexelRepeatFlag(); |
| 169 | } |
| 170 | #ifdef DEBUGGER |
| 171 | else |
| 172 | { |
| 173 | DebuggerAppendMsg("Check me, texture is NULL"); |
| 174 | } |
| 175 | #endif |
| 176 | |
| 177 | bool texIsUsed = m_pDecodedMux->isUsed(MUX_TEXEL0); |
| 178 | bool shadeIsUsedInColor = m_pDecodedMux->isUsedInCycle(MUX_SHADE, 0, COLOR_CHANNEL); |
| 179 | bool texIsUsedInColor = m_pDecodedMux->isUsedInCycle(MUX_TEXEL0, 0, COLOR_CHANNEL); |
| 180 | |
| 181 | if( texIsUsed ) |
| 182 | { |
| 183 | // Parse the simplified the mux, because the OGL 1.1 combiner function is so much |
| 184 | // limited, we only parse the 1st N64 combiner setting and only the RGB part |
| 185 | |
| 186 | N64CombinerType & comb = m_pDecodedMux->m_n64Combiners[0]; |
| 187 | switch( m_pDecodedMux->mType ) |
| 188 | { |
| 189 | case CM_FMT_TYPE_NOT_USED: |
| 190 | case CM_FMT_TYPE_D: // = A |
| 191 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); |
| 192 | OPENGL_CHECK_ERRORS; |
| 193 | break; |
| 194 | case CM_FMT_TYPE_A_ADD_D: // = A+D |
| 195 | if( shadeIsUsedInColor && texIsUsedInColor ) |
| 196 | { |
| 197 | if( m_bSupportAdd ) |
| 198 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_ADD); |
| 199 | else |
| 200 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_BLEND); |
| 201 | } |
| 202 | else if( texIsUsedInColor ) |
| 203 | { |
| 204 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); |
| 205 | } |
| 206 | else |
| 207 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); |
| 208 | OPENGL_CHECK_ERRORS; |
| 209 | break; |
| 210 | case CM_FMT_TYPE_A_SUB_B: // = A-B |
| 211 | if( shadeIsUsedInColor && texIsUsedInColor ) |
| 212 | { |
| 213 | if( m_bSupportSubtract ) |
| 214 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_SUBTRACT_ARB); |
| 215 | else |
| 216 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_BLEND); |
| 217 | } |
| 218 | else if( texIsUsedInColor ) |
| 219 | { |
| 220 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); |
| 221 | } |
| 222 | else |
| 223 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); |
| 224 | OPENGL_CHECK_ERRORS; |
| 225 | break; |
| 226 | case CM_FMT_TYPE_A_MOD_C: // = A*C |
| 227 | case CM_FMT_TYPE_A_MOD_C_ADD_D: // = A*C+D |
| 228 | if( shadeIsUsedInColor && texIsUsedInColor ) |
| 229 | { |
| 230 | if( ((comb.c & mask) == MUX_SHADE && !(comb.c&MUX_COMPLEMENT)) || |
| 231 | ((comb.a & mask) == MUX_SHADE && !(comb.a&MUX_COMPLEMENT)) ) |
| 232 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); |
| 233 | else |
| 234 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); |
| 235 | } |
| 236 | else if( texIsUsedInColor ) |
| 237 | { |
| 238 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); |
| 239 | } |
| 240 | else |
| 241 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); |
| 242 | OPENGL_CHECK_ERRORS; |
| 243 | break; |
| 244 | case CM_FMT_TYPE_A_LERP_B_C: // = A*C+D |
| 245 | if( (comb.b&mask) == MUX_SHADE && (comb.c&mask)==MUX_TEXEL0 && ((comb.a&mask)==MUX_PRIM||(comb.a&mask)==MUX_ENV)) |
| 246 | { |
| 247 | float *fv; |
| 248 | if( (comb.a&mask)==MUX_PRIM ) |
| 249 | { |
| 250 | fv = GetPrimitiveColorfv(); |
| 251 | } |
| 252 | else |
| 253 | { |
| 254 | fv = GetEnvColorfv(); |
| 255 | } |
| 256 | |
| 257 | glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR,fv); |
| 258 | OPENGL_CHECK_ERRORS; |
| 259 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_BLEND); |
| 260 | OPENGL_CHECK_ERRORS; |
| 261 | break; |
| 262 | } |
| 263 | default: // = (A-B)*C+D |
| 264 | if( shadeIsUsedInColor ) |
| 265 | { |
| 266 | if( ((comb.c & mask) == MUX_SHADE && !(comb.c&MUX_COMPLEMENT)) || |
| 267 | ((comb.a & mask) == MUX_SHADE && !(comb.a&MUX_COMPLEMENT)) ) |
| 268 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); |
| 269 | else |
| 270 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); |
| 271 | } |
| 272 | else |
| 273 | { |
| 274 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); |
| 275 | } |
| 276 | OPENGL_CHECK_ERRORS; |
| 277 | break; |
| 278 | } |
| 279 | } |
| 280 | else |
| 281 | { |
| 282 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); |
| 283 | OPENGL_CHECK_ERRORS; |
| 284 | } |
| 285 | #endif |
| 286 | } |
| 287 | |
| 288 | void COGLBlender::NormalAlphaBlender(void) |
| 289 | { |
| 290 | glEnable(GL_BLEND); |
| 291 | OPENGL_CHECK_ERRORS; |
| 292 | glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
| 293 | OPENGL_CHECK_ERRORS; |
| 294 | } |
| 295 | |
| 296 | void COGLBlender::DisableAlphaBlender(void) |
| 297 | { |
| 298 | glEnable(GL_BLEND); |
| 299 | OPENGL_CHECK_ERRORS; |
| 300 | glBlendFunc(GL_ONE, GL_ZERO); |
| 301 | OPENGL_CHECK_ERRORS; |
| 302 | } |
| 303 | |
| 304 | |
| 305 | void COGLBlender::BlendFunc(uint32 srcFunc, uint32 desFunc) |
| 306 | { |
| 307 | glBlendFunc(DirectX_OGL_BlendFuncMaps[srcFunc], DirectX_OGL_BlendFuncMaps[desFunc]); |
| 308 | OPENGL_CHECK_ERRORS; |
| 309 | } |
| 310 | |
| 311 | void COGLBlender::Enable() |
| 312 | { |
| 313 | glEnable(GL_BLEND); |
| 314 | OPENGL_CHECK_ERRORS; |
| 315 | } |
| 316 | |
| 317 | void COGLBlender::Disable() |
| 318 | { |
| 319 | glDisable(GL_BLEND); |
| 320 | OPENGL_CHECK_ERRORS; |
| 321 | } |
| 322 | |
| 323 | void COGLColorCombiner::InitCombinerBlenderForSimpleTextureDraw(uint32 tile) |
| 324 | { |
| 325 | m_pOGLRender->DisableMultiTexture(); |
| 326 | if( g_textures[tile].m_pCTexture ) |
| 327 | { |
| 328 | m_pOGLRender->EnableTexUnit(0,TRUE); |
| 329 | glBindTexture(GL_TEXTURE_2D, ((COGLTexture*)(g_textures[tile].m_pCTexture))->m_dwTextureName); |
| 330 | OPENGL_CHECK_ERRORS; |
| 331 | } |
| 332 | m_pOGLRender->SetAllTexelRepeatFlag(); |
| 333 | |
| 334 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP); |
| 335 | OPENGL_CHECK_ERRORS; |
| 336 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP); |
| 337 | OPENGL_CHECK_ERRORS; |
| 338 | glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR); // Linear Filtering |
| 339 | OPENGL_CHECK_ERRORS; |
| 340 | glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); // Linear Filtering |
| 341 | OPENGL_CHECK_ERRORS; |
| 342 | |
| 343 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); |
| 344 | OPENGL_CHECK_ERRORS; |
| 345 | m_pOGLRender->SetAlphaTestEnable(FALSE); |
| 346 | } |
| 347 | |
| 348 | #ifdef DEBUGGER |
| 349 | extern const char *translatedCombTypes[]; |
| 350 | void COGLColorCombiner::DisplaySimpleMuxString(void) |
| 351 | { |
| 352 | TRACE0("\nSimplified Mux\n"); |
| 353 | m_pDecodedMux->DisplaySimpliedMuxString("Used"); |
| 354 | } |
| 355 | #endif |
| 356 | |