Go to most recent revision | Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1901 | serge | 1 | /* |
| 2 | * Mesa 3-D graphics library |
||
| 3 | * Version: 7.1 |
||
| 4 | * |
||
| 5 | * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. |
||
| 6 | * |
||
| 7 | * Permission is hereby granted, free of charge, to any person obtaining a |
||
| 8 | * copy of this software and associated documentation files (the "Software"), |
||
| 9 | * to deal in the Software without restriction, including without limitation |
||
| 10 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
||
| 11 | * and/or sell copies of the Software, and to permit persons to whom the |
||
| 12 | * Software is furnished to do so, subject to the following conditions: |
||
| 13 | * |
||
| 14 | * The above copyright notice and this permission notice shall be included |
||
| 15 | * in all copies or substantial portions of the Software. |
||
| 16 | * |
||
| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
||
| 18 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
||
| 19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
||
| 20 | * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
||
| 21 | * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
||
| 22 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
||
| 23 | */ |
||
| 24 | |||
| 25 | /** |
||
| 26 | * \file prog_statevars.c |
||
| 27 | * Program state variable management. |
||
| 28 | * \author Brian Paul |
||
| 29 | */ |
||
| 30 | |||
| 31 | |||
| 32 | #include "main/glheader.h" |
||
| 33 | #include "main/context.h" |
||
| 34 | #include "main/imports.h" |
||
| 35 | #include "main/macros.h" |
||
| 36 | #include "main/mtypes.h" |
||
| 37 | #include "prog_statevars.h" |
||
| 38 | #include "prog_parameter.h" |
||
| 39 | |||
| 40 | |||
| 41 | /** |
||
| 42 | * Use the list of tokens in the state[] array to find global GL state |
||
| 43 | * and return it in |
||
| 44 | * but matrix queries may return as many as 16 values. |
||
| 45 | * This function is used for ARB vertex/fragment programs. |
||
| 46 | * The program parser will produce the state[] values. |
||
| 47 | */ |
||
| 48 | static void |
||
| 49 | _mesa_fetch_state(struct gl_context *ctx, const gl_state_index state[], |
||
| 50 | GLfloat *value) |
||
| 51 | { |
||
| 52 | switch (state[0]) { |
||
| 53 | case STATE_MATERIAL: |
||
| 54 | { |
||
| 55 | /* state[1] is either 0=front or 1=back side */ |
||
| 56 | const GLuint face = (GLuint) state[1]; |
||
| 57 | const struct gl_material *mat = &ctx->Light.Material; |
||
| 58 | ASSERT(face == 0 || face == 1); |
||
| 59 | /* we rely on tokens numbered so that _BACK_ == _FRONT_+ 1 */ |
||
| 60 | ASSERT(MAT_ATTRIB_FRONT_AMBIENT + 1 == MAT_ATTRIB_BACK_AMBIENT); |
||
| 61 | /* XXX we could get rid of this switch entirely with a little |
||
| 62 | * work in arbprogparse.c's parse_state_single_item(). |
||
| 63 | */ |
||
| 64 | /* state[2] is the material attribute */ |
||
| 65 | switch (state[2]) { |
||
| 66 | case STATE_AMBIENT: |
||
| 67 | COPY_4V(value, mat->Attrib[MAT_ATTRIB_FRONT_AMBIENT + face]); |
||
| 68 | return; |
||
| 69 | case STATE_DIFFUSE: |
||
| 70 | COPY_4V(value, mat->Attrib[MAT_ATTRIB_FRONT_DIFFUSE + face]); |
||
| 71 | return; |
||
| 72 | case STATE_SPECULAR: |
||
| 73 | COPY_4V(value, mat->Attrib[MAT_ATTRIB_FRONT_SPECULAR + face]); |
||
| 74 | return; |
||
| 75 | case STATE_EMISSION: |
||
| 76 | COPY_4V(value, mat->Attrib[MAT_ATTRIB_FRONT_EMISSION + face]); |
||
| 77 | return; |
||
| 78 | case STATE_SHININESS: |
||
| 79 | value[0] = mat->Attrib[MAT_ATTRIB_FRONT_SHININESS + face][0]; |
||
| 80 | value[1] = 0.0F; |
||
| 81 | value[2] = 0.0F; |
||
| 82 | value[3] = 1.0F; |
||
| 83 | return; |
||
| 84 | default: |
||
| 85 | _mesa_problem(ctx, "Invalid material state in fetch_state"); |
||
| 86 | return; |
||
| 87 | } |
||
| 88 | } |
||
| 89 | case STATE_LIGHT: |
||
| 90 | { |
||
| 91 | /* state[1] is the light number */ |
||
| 92 | const GLuint ln = (GLuint) state[1]; |
||
| 93 | /* state[2] is the light attribute */ |
||
| 94 | switch (state[2]) { |
||
| 95 | case STATE_AMBIENT: |
||
| 96 | COPY_4V(value, ctx->Light.Light[ln].Ambient); |
||
| 97 | return; |
||
| 98 | case STATE_DIFFUSE: |
||
| 99 | COPY_4V(value, ctx->Light.Light[ln].Diffuse); |
||
| 100 | return; |
||
| 101 | case STATE_SPECULAR: |
||
| 102 | COPY_4V(value, ctx->Light.Light[ln].Specular); |
||
| 103 | return; |
||
| 104 | case STATE_POSITION: |
||
| 105 | COPY_4V(value, ctx->Light.Light[ln].EyePosition); |
||
| 106 | return; |
||
| 107 | case STATE_ATTENUATION: |
||
| 108 | value[0] = ctx->Light.Light[ln].ConstantAttenuation; |
||
| 109 | value[1] = ctx->Light.Light[ln].LinearAttenuation; |
||
| 110 | value[2] = ctx->Light.Light[ln].QuadraticAttenuation; |
||
| 111 | value[3] = ctx->Light.Light[ln].SpotExponent; |
||
| 112 | return; |
||
| 113 | case STATE_SPOT_DIRECTION: |
||
| 114 | COPY_3V(value, ctx->Light.Light[ln].SpotDirection); |
||
| 115 | value[3] = ctx->Light.Light[ln]._CosCutoff; |
||
| 116 | return; |
||
| 117 | case STATE_SPOT_CUTOFF: |
||
| 118 | value[0] = ctx->Light.Light[ln].SpotCutoff; |
||
| 119 | return; |
||
| 120 | case STATE_HALF_VECTOR: |
||
| 121 | { |
||
| 122 | static const GLfloat eye_z[] = {0, 0, 1}; |
||
| 123 | GLfloat p[3]; |
||
| 124 | /* Compute infinite half angle vector: |
||
| 125 | * halfVector = normalize(normalize(lightPos) + (0, 0, 1)) |
||
| 126 | * light.EyePosition.w should be 0 for infinite lights. |
||
| 127 | */ |
||
| 128 | COPY_3V(p, ctx->Light.Light[ln].EyePosition); |
||
| 129 | NORMALIZE_3FV(p); |
||
| 130 | ADD_3V(value, p, eye_z); |
||
| 131 | NORMALIZE_3FV(value); |
||
| 132 | value[3] = 1.0; |
||
| 133 | } |
||
| 134 | return; |
||
| 135 | default: |
||
| 136 | _mesa_problem(ctx, "Invalid light state in fetch_state"); |
||
| 137 | return; |
||
| 138 | } |
||
| 139 | } |
||
| 140 | case STATE_LIGHTMODEL_AMBIENT: |
||
| 141 | COPY_4V(value, ctx->Light.Model.Ambient); |
||
| 142 | return; |
||
| 143 | case STATE_LIGHTMODEL_SCENECOLOR: |
||
| 144 | if (state[1] == 0) { |
||
| 145 | /* front */ |
||
| 146 | GLint i; |
||
| 147 | for (i = 0; i < 3; i++) { |
||
| 148 | value[i] = ctx->Light.Model.Ambient[i] |
||
| 149 | * ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT][i] |
||
| 150 | + ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_EMISSION][i]; |
||
| 151 | } |
||
| 152 | value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3]; |
||
| 153 | } |
||
| 154 | else { |
||
| 155 | /* back */ |
||
| 156 | GLint i; |
||
| 157 | for (i = 0; i < 3; i++) { |
||
| 158 | value[i] = ctx->Light.Model.Ambient[i] |
||
| 159 | * ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_AMBIENT][i] |
||
| 160 | + ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_EMISSION][i]; |
||
| 161 | } |
||
| 162 | value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3]; |
||
| 163 | } |
||
| 164 | return; |
||
| 165 | case STATE_LIGHTPROD: |
||
| 166 | { |
||
| 167 | const GLuint ln = (GLuint) state[1]; |
||
| 168 | const GLuint face = (GLuint) state[2]; |
||
| 169 | GLint i; |
||
| 170 | ASSERT(face == 0 || face == 1); |
||
| 171 | switch (state[3]) { |
||
| 172 | case STATE_AMBIENT: |
||
| 173 | for (i = 0; i < 3; i++) { |
||
| 174 | value[i] = ctx->Light.Light[ln].Ambient[i] * |
||
| 175 | ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT+face][i]; |
||
| 176 | } |
||
| 177 | /* [3] = material alpha */ |
||
| 178 | value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT+face][3]; |
||
| 179 | return; |
||
| 180 | case STATE_DIFFUSE: |
||
| 181 | for (i = 0; i < 3; i++) { |
||
| 182 | value[i] = ctx->Light.Light[ln].Diffuse[i] * |
||
| 183 | ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][i]; |
||
| 184 | } |
||
| 185 | /* [3] = material alpha */ |
||
| 186 | value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][3]; |
||
| 187 | return; |
||
| 188 | case STATE_SPECULAR: |
||
| 189 | for (i = 0; i < 3; i++) { |
||
| 190 | value[i] = ctx->Light.Light[ln].Specular[i] * |
||
| 191 | ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SPECULAR+face][i]; |
||
| 192 | } |
||
| 193 | /* [3] = material alpha */ |
||
| 194 | value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SPECULAR+face][3]; |
||
| 195 | return; |
||
| 196 | default: |
||
| 197 | _mesa_problem(ctx, "Invalid lightprod state in fetch_state"); |
||
| 198 | return; |
||
| 199 | } |
||
| 200 | } |
||
| 201 | case STATE_TEXGEN: |
||
| 202 | { |
||
| 203 | /* state[1] is the texture unit */ |
||
| 204 | const GLuint unit = (GLuint) state[1]; |
||
| 205 | /* state[2] is the texgen attribute */ |
||
| 206 | switch (state[2]) { |
||
| 207 | case STATE_TEXGEN_EYE_S: |
||
| 208 | COPY_4V(value, ctx->Texture.Unit[unit].GenS.EyePlane); |
||
| 209 | return; |
||
| 210 | case STATE_TEXGEN_EYE_T: |
||
| 211 | COPY_4V(value, ctx->Texture.Unit[unit].GenT.EyePlane); |
||
| 212 | return; |
||
| 213 | case STATE_TEXGEN_EYE_R: |
||
| 214 | COPY_4V(value, ctx->Texture.Unit[unit].GenR.EyePlane); |
||
| 215 | return; |
||
| 216 | case STATE_TEXGEN_EYE_Q: |
||
| 217 | COPY_4V(value, ctx->Texture.Unit[unit].GenQ.EyePlane); |
||
| 218 | return; |
||
| 219 | case STATE_TEXGEN_OBJECT_S: |
||
| 220 | COPY_4V(value, ctx->Texture.Unit[unit].GenS.ObjectPlane); |
||
| 221 | return; |
||
| 222 | case STATE_TEXGEN_OBJECT_T: |
||
| 223 | COPY_4V(value, ctx->Texture.Unit[unit].GenT.ObjectPlane); |
||
| 224 | return; |
||
| 225 | case STATE_TEXGEN_OBJECT_R: |
||
| 226 | COPY_4V(value, ctx->Texture.Unit[unit].GenR.ObjectPlane); |
||
| 227 | return; |
||
| 228 | case STATE_TEXGEN_OBJECT_Q: |
||
| 229 | COPY_4V(value, ctx->Texture.Unit[unit].GenQ.ObjectPlane); |
||
| 230 | return; |
||
| 231 | default: |
||
| 232 | _mesa_problem(ctx, "Invalid texgen state in fetch_state"); |
||
| 233 | return; |
||
| 234 | } |
||
| 235 | } |
||
| 236 | case STATE_TEXENV_COLOR: |
||
| 237 | { |
||
| 238 | /* state[1] is the texture unit */ |
||
| 239 | const GLuint unit = (GLuint) state[1]; |
||
| 240 | COPY_4V(value, ctx->Texture.Unit[unit].EnvColor); |
||
| 241 | } |
||
| 242 | return; |
||
| 243 | case STATE_FOG_COLOR: |
||
| 244 | COPY_4V(value, ctx->Fog.Color); |
||
| 245 | return; |
||
| 246 | case STATE_FOG_PARAMS: |
||
| 247 | value[0] = ctx->Fog.Density; |
||
| 248 | value[1] = ctx->Fog.Start; |
||
| 249 | value[2] = ctx->Fog.End; |
||
| 250 | value[3] = (ctx->Fog.End == ctx->Fog.Start) |
||
| 251 | ? 1.0f : (GLfloat)(1.0 / (ctx->Fog.End - ctx->Fog.Start)); |
||
| 252 | return; |
||
| 253 | case STATE_CLIPPLANE: |
||
| 254 | { |
||
| 255 | const GLuint plane = (GLuint) state[1]; |
||
| 256 | COPY_4V(value, ctx->Transform.EyeUserPlane[plane]); |
||
| 257 | } |
||
| 258 | return; |
||
| 259 | case STATE_POINT_SIZE: |
||
| 260 | value[0] = ctx->Point.Size; |
||
| 261 | value[1] = ctx->Point.MinSize; |
||
| 262 | value[2] = ctx->Point.MaxSize; |
||
| 263 | value[3] = ctx->Point.Threshold; |
||
| 264 | return; |
||
| 265 | case STATE_POINT_ATTENUATION: |
||
| 266 | value[0] = ctx->Point.Params[0]; |
||
| 267 | value[1] = ctx->Point.Params[1]; |
||
| 268 | value[2] = ctx->Point.Params[2]; |
||
| 269 | value[3] = 1.0F; |
||
| 270 | return; |
||
| 271 | case STATE_MODELVIEW_MATRIX: |
||
| 272 | case STATE_PROJECTION_MATRIX: |
||
| 273 | case STATE_MVP_MATRIX: |
||
| 274 | case STATE_TEXTURE_MATRIX: |
||
| 275 | case STATE_PROGRAM_MATRIX: |
||
| 276 | { |
||
| 277 | /* state[0] = modelview, projection, texture, etc. */ |
||
| 278 | /* state[1] = which texture matrix or program matrix */ |
||
| 279 | /* state[2] = first row to fetch */ |
||
| 280 | /* state[3] = last row to fetch */ |
||
| 281 | /* state[4] = transpose, inverse or invtrans */ |
||
| 282 | const GLmatrix *matrix; |
||
| 283 | const gl_state_index mat = state[0]; |
||
| 284 | const GLuint index = (GLuint) state[1]; |
||
| 285 | const GLuint firstRow = (GLuint) state[2]; |
||
| 286 | const GLuint lastRow = (GLuint) state[3]; |
||
| 287 | const gl_state_index modifier = state[4]; |
||
| 288 | const GLfloat *m; |
||
| 289 | GLuint row, i; |
||
| 290 | ASSERT(firstRow >= 0); |
||
| 291 | ASSERT(firstRow < 4); |
||
| 292 | ASSERT(lastRow >= 0); |
||
| 293 | ASSERT(lastRow < 4); |
||
| 294 | if (mat == STATE_MODELVIEW_MATRIX) { |
||
| 295 | matrix = ctx->ModelviewMatrixStack.Top; |
||
| 296 | } |
||
| 297 | else if (mat == STATE_PROJECTION_MATRIX) { |
||
| 298 | matrix = ctx->ProjectionMatrixStack.Top; |
||
| 299 | } |
||
| 300 | else if (mat == STATE_MVP_MATRIX) { |
||
| 301 | matrix = &ctx->_ModelProjectMatrix; |
||
| 302 | } |
||
| 303 | else if (mat == STATE_TEXTURE_MATRIX) { |
||
| 304 | ASSERT(index < Elements(ctx->TextureMatrixStack)); |
||
| 305 | matrix = ctx->TextureMatrixStack[index].Top; |
||
| 306 | } |
||
| 307 | else if (mat == STATE_PROGRAM_MATRIX) { |
||
| 308 | ASSERT(index < Elements(ctx->ProgramMatrixStack)); |
||
| 309 | matrix = ctx->ProgramMatrixStack[index].Top; |
||
| 310 | } |
||
| 311 | else { |
||
| 312 | _mesa_problem(ctx, "Bad matrix name in _mesa_fetch_state()"); |
||
| 313 | return; |
||
| 314 | } |
||
| 315 | if (modifier == STATE_MATRIX_INVERSE || |
||
| 316 | modifier == STATE_MATRIX_INVTRANS) { |
||
| 317 | /* Be sure inverse is up to date: |
||
| 318 | */ |
||
| 319 | _math_matrix_alloc_inv( (GLmatrix *) matrix ); |
||
| 320 | _math_matrix_analyse( (GLmatrix*) matrix ); |
||
| 321 | m = matrix->inv; |
||
| 322 | } |
||
| 323 | else { |
||
| 324 | m = matrix->m; |
||
| 325 | } |
||
| 326 | if (modifier == STATE_MATRIX_TRANSPOSE || |
||
| 327 | modifier == STATE_MATRIX_INVTRANS) { |
||
| 328 | for (i = 0, row = firstRow; row <= lastRow; row++) { |
||
| 329 | value[i++] = m[row * 4 + 0]; |
||
| 330 | value[i++] = m[row * 4 + 1]; |
||
| 331 | value[i++] = m[row * 4 + 2]; |
||
| 332 | value[i++] = m[row * 4 + 3]; |
||
| 333 | } |
||
| 334 | } |
||
| 335 | else { |
||
| 336 | for (i = 0, row = firstRow; row <= lastRow; row++) { |
||
| 337 | value[i++] = m[row + 0]; |
||
| 338 | value[i++] = m[row + 4]; |
||
| 339 | value[i++] = m[row + 8]; |
||
| 340 | value[i++] = m[row + 12]; |
||
| 341 | } |
||
| 342 | } |
||
| 343 | } |
||
| 344 | return; |
||
| 345 | case STATE_DEPTH_RANGE: |
||
| 346 | value[0] = ctx->Viewport.Near; /* near */ |
||
| 347 | value[1] = ctx->Viewport.Far; /* far */ |
||
| 348 | value[2] = ctx->Viewport.Far - ctx->Viewport.Near; /* far - near */ |
||
| 349 | value[3] = 1.0; |
||
| 350 | return; |
||
| 351 | case STATE_FRAGMENT_PROGRAM: |
||
| 352 | { |
||
| 353 | /* state[1] = {STATE_ENV, STATE_LOCAL} */ |
||
| 354 | /* state[2] = parameter index */ |
||
| 355 | const int idx = (int) state[2]; |
||
| 356 | switch (state[1]) { |
||
| 357 | case STATE_ENV: |
||
| 358 | COPY_4V(value, ctx->FragmentProgram.Parameters[idx]); |
||
| 359 | return; |
||
| 360 | case STATE_LOCAL: |
||
| 361 | COPY_4V(value, ctx->FragmentProgram.Current->Base.LocalParams[idx]); |
||
| 362 | return; |
||
| 363 | default: |
||
| 364 | _mesa_problem(ctx, "Bad state switch in _mesa_fetch_state()"); |
||
| 365 | return; |
||
| 366 | } |
||
| 367 | } |
||
| 368 | return; |
||
| 369 | |||
| 370 | case STATE_VERTEX_PROGRAM: |
||
| 371 | { |
||
| 372 | /* state[1] = {STATE_ENV, STATE_LOCAL} */ |
||
| 373 | /* state[2] = parameter index */ |
||
| 374 | const int idx = (int) state[2]; |
||
| 375 | switch (state[1]) { |
||
| 376 | case STATE_ENV: |
||
| 377 | COPY_4V(value, ctx->VertexProgram.Parameters[idx]); |
||
| 378 | return; |
||
| 379 | case STATE_LOCAL: |
||
| 380 | COPY_4V(value, ctx->VertexProgram.Current->Base.LocalParams[idx]); |
||
| 381 | return; |
||
| 382 | default: |
||
| 383 | _mesa_problem(ctx, "Bad state switch in _mesa_fetch_state()"); |
||
| 384 | return; |
||
| 385 | } |
||
| 386 | } |
||
| 387 | return; |
||
| 388 | |||
| 389 | case STATE_NORMAL_SCALE: |
||
| 390 | ASSIGN_4V(value, ctx->_ModelViewInvScale, 0, 0, 1); |
||
| 391 | return; |
||
| 392 | |||
| 393 | case STATE_INTERNAL: |
||
| 394 | switch (state[1]) { |
||
| 395 | case STATE_CURRENT_ATTRIB: |
||
| 396 | { |
||
| 397 | const GLuint idx = (GLuint) state[2]; |
||
| 398 | COPY_4V(value, ctx->Current.Attrib[idx]); |
||
| 399 | } |
||
| 400 | return; |
||
| 401 | |||
| 402 | case STATE_NORMAL_SCALE: |
||
| 403 | ASSIGN_4V(value, |
||
| 404 | ctx->_ModelViewInvScale, |
||
| 405 | ctx->_ModelViewInvScale, |
||
| 406 | ctx->_ModelViewInvScale, |
||
| 407 | 1); |
||
| 408 | return; |
||
| 409 | |||
| 410 | case STATE_TEXRECT_SCALE: |
||
| 411 | /* Value = { 1/texWidth, 1/texHeight, 0, 1 }. |
||
| 412 | * Used to convert unnormalized texcoords to normalized texcoords. |
||
| 413 | */ |
||
| 414 | { |
||
| 415 | const int unit = (int) state[2]; |
||
| 416 | const struct gl_texture_object *texObj |
||
| 417 | = ctx->Texture.Unit[unit]._Current; |
||
| 418 | if (texObj) { |
||
| 419 | struct gl_texture_image *texImage = texObj->Image[0][0]; |
||
| 420 | ASSIGN_4V(value, |
||
| 421 | (GLfloat) (1.0 / texImage->Width), |
||
| 422 | (GLfloat) (1.0 / texImage->Height), |
||
| 423 | 0.0f, 1.0f); |
||
| 424 | } |
||
| 425 | } |
||
| 426 | return; |
||
| 427 | |||
| 428 | case STATE_FOG_PARAMS_OPTIMIZED: |
||
| 429 | /* for simpler per-vertex/pixel fog calcs. POW (for EXP/EXP2 fog) |
||
| 430 | * might be more expensive than EX2 on some hw, plus it needs |
||
| 431 | * another constant (e) anyway. Linear fog can now be done with a |
||
| 432 | * single MAD. |
||
| 433 | * linear: fogcoord * -1/(end-start) + end/(end-start) |
||
| 434 | * exp: 2^-(density/ln(2) * fogcoord) |
||
| 435 | * exp2: 2^-((density/(ln(2)^2) * fogcoord)^2) |
||
| 436 | */ |
||
| 437 | value[0] = (ctx->Fog.End == ctx->Fog.Start) |
||
| 438 | ? 1.0f : (GLfloat)(-1.0F / (ctx->Fog.End - ctx->Fog.Start)); |
||
| 439 | value[1] = ctx->Fog.End * -value[0]; |
||
| 440 | value[2] = (GLfloat)(ctx->Fog.Density * ONE_DIV_LN2); |
||
| 441 | value[3] = (GLfloat)(ctx->Fog.Density * ONE_DIV_SQRT_LN2); |
||
| 442 | return; |
||
| 443 | |||
| 444 | case STATE_POINT_SIZE_CLAMPED: |
||
| 445 | { |
||
| 446 | /* this includes implementation dependent limits, to avoid |
||
| 447 | * another potentially necessary clamp. |
||
| 448 | * Note: for sprites, point smooth (point AA) is ignored |
||
| 449 | * and we'll clamp to MinPointSizeAA and MaxPointSize, because we |
||
| 450 | * expect drivers will want to say their minimum for AA size is 0.0 |
||
| 451 | * but for non-AA it's 1.0 (because normal points with size below 1.0 |
||
| 452 | * need to get rounded up to 1.0, hence never disappear). GL does |
||
| 453 | * not specify max clamp size for sprites, other than it needs to be |
||
| 454 | * at least as large as max AA size, hence use non-AA size there. |
||
| 455 | */ |
||
| 456 | GLfloat minImplSize; |
||
| 457 | GLfloat maxImplSize; |
||
| 458 | if (ctx->Point.PointSprite) { |
||
| 459 | minImplSize = ctx->Const.MinPointSizeAA; |
||
| 460 | maxImplSize = ctx->Const.MaxPointSize; |
||
| 461 | } |
||
| 462 | else if (ctx->Point.SmoothFlag || ctx->Multisample._Enabled) { |
||
| 463 | minImplSize = ctx->Const.MinPointSizeAA; |
||
| 464 | maxImplSize = ctx->Const.MaxPointSizeAA; |
||
| 465 | } |
||
| 466 | else { |
||
| 467 | minImplSize = ctx->Const.MinPointSize; |
||
| 468 | maxImplSize = ctx->Const.MaxPointSize; |
||
| 469 | } |
||
| 470 | value[0] = ctx->Point.Size; |
||
| 471 | value[1] = ctx->Point.MinSize >= minImplSize ? ctx->Point.MinSize : minImplSize; |
||
| 472 | value[2] = ctx->Point.MaxSize <= maxImplSize ? ctx->Point.MaxSize : maxImplSize; |
||
| 473 | value[3] = ctx->Point.Threshold; |
||
| 474 | } |
||
| 475 | return; |
||
| 476 | case STATE_POINT_SIZE_IMPL_CLAMP: |
||
| 477 | { |
||
| 478 | /* for implementation clamp only in vs */ |
||
| 479 | GLfloat minImplSize; |
||
| 480 | GLfloat maxImplSize; |
||
| 481 | if (ctx->Point.PointSprite) { |
||
| 482 | minImplSize = ctx->Const.MinPointSizeAA; |
||
| 483 | maxImplSize = ctx->Const.MaxPointSize; |
||
| 484 | } |
||
| 485 | else if (ctx->Point.SmoothFlag || ctx->Multisample._Enabled) { |
||
| 486 | minImplSize = ctx->Const.MinPointSizeAA; |
||
| 487 | maxImplSize = ctx->Const.MaxPointSizeAA; |
||
| 488 | } |
||
| 489 | else { |
||
| 490 | minImplSize = ctx->Const.MinPointSize; |
||
| 491 | maxImplSize = ctx->Const.MaxPointSize; |
||
| 492 | } |
||
| 493 | value[0] = ctx->Point.Size; |
||
| 494 | value[1] = minImplSize; |
||
| 495 | value[2] = maxImplSize; |
||
| 496 | value[3] = ctx->Point.Threshold; |
||
| 497 | } |
||
| 498 | return; |
||
| 499 | case STATE_LIGHT_SPOT_DIR_NORMALIZED: |
||
| 500 | { |
||
| 501 | /* here, state[2] is the light number */ |
||
| 502 | /* pre-normalize spot dir */ |
||
| 503 | const GLuint ln = (GLuint) state[2]; |
||
| 504 | COPY_3V(value, ctx->Light.Light[ln]._NormSpotDirection); |
||
| 505 | value[3] = ctx->Light.Light[ln]._CosCutoff; |
||
| 506 | } |
||
| 507 | return; |
||
| 508 | |||
| 509 | case STATE_LIGHT_POSITION: |
||
| 510 | { |
||
| 511 | const GLuint ln = (GLuint) state[2]; |
||
| 512 | COPY_4V(value, ctx->Light.Light[ln]._Position); |
||
| 513 | } |
||
| 514 | return; |
||
| 515 | |||
| 516 | case STATE_LIGHT_POSITION_NORMALIZED: |
||
| 517 | { |
||
| 518 | const GLuint ln = (GLuint) state[2]; |
||
| 519 | COPY_4V(value, ctx->Light.Light[ln]._Position); |
||
| 520 | NORMALIZE_3FV( value ); |
||
| 521 | } |
||
| 522 | return; |
||
| 523 | |||
| 524 | case STATE_LIGHT_HALF_VECTOR: |
||
| 525 | { |
||
| 526 | const GLuint ln = (GLuint) state[2]; |
||
| 527 | GLfloat p[3]; |
||
| 528 | /* Compute infinite half angle vector: |
||
| 529 | * halfVector = normalize(normalize(lightPos) + (0, 0, 1)) |
||
| 530 | * light.EyePosition.w should be 0 for infinite lights. |
||
| 531 | */ |
||
| 532 | COPY_3V(p, ctx->Light.Light[ln]._Position); |
||
| 533 | NORMALIZE_3FV(p); |
||
| 534 | ADD_3V(value, p, ctx->_EyeZDir); |
||
| 535 | NORMALIZE_3FV(value); |
||
| 536 | value[3] = 1.0; |
||
| 537 | } |
||
| 538 | return; |
||
| 539 | |||
| 540 | case STATE_PT_SCALE: |
||
| 541 | value[0] = ctx->Pixel.RedScale; |
||
| 542 | value[1] = ctx->Pixel.GreenScale; |
||
| 543 | value[2] = ctx->Pixel.BlueScale; |
||
| 544 | value[3] = ctx->Pixel.AlphaScale; |
||
| 545 | return; |
||
| 546 | |||
| 547 | case STATE_PT_BIAS: |
||
| 548 | value[0] = ctx->Pixel.RedBias; |
||
| 549 | value[1] = ctx->Pixel.GreenBias; |
||
| 550 | value[2] = ctx->Pixel.BlueBias; |
||
| 551 | value[3] = ctx->Pixel.AlphaBias; |
||
| 552 | return; |
||
| 553 | |||
| 554 | case STATE_SHADOW_AMBIENT: |
||
| 555 | { |
||
| 556 | const int unit = (int) state[2]; |
||
| 557 | const struct gl_texture_object *texObj |
||
| 558 | = ctx->Texture.Unit[unit]._Current; |
||
| 559 | if (texObj) { |
||
| 560 | value[0] = |
||
| 561 | value[1] = |
||
| 562 | value[2] = |
||
| 563 | value[3] = texObj->CompareFailValue; |
||
| 564 | } |
||
| 565 | } |
||
| 566 | return; |
||
| 567 | |||
| 568 | case STATE_FB_SIZE: |
||
| 569 | value[0] = (GLfloat) (ctx->DrawBuffer->Width - 1); |
||
| 570 | value[1] = (GLfloat) (ctx->DrawBuffer->Height - 1); |
||
| 571 | value[2] = 0.0F; |
||
| 572 | value[3] = 0.0F; |
||
| 573 | return; |
||
| 574 | |||
| 575 | case STATE_FB_WPOS_Y_TRANSFORM: |
||
| 576 | /* A driver may negate this conditional by using ZW swizzle |
||
| 577 | * instead of XY (based on e.g. some other state). */ |
||
| 578 | if (ctx->DrawBuffer->Name != 0) { |
||
| 579 | /* Identity (XY) followed by flipping Y upside down (ZW). */ |
||
| 580 | value[0] = 1.0F; |
||
| 581 | value[1] = 0.0F; |
||
| 582 | value[2] = -1.0F; |
||
| 583 | value[3] = (GLfloat) (ctx->DrawBuffer->Height - 1); |
||
| 584 | } else { |
||
| 585 | /* Flipping Y upside down (XY) followed by identity (ZW). */ |
||
| 586 | value[0] = -1.0F; |
||
| 587 | value[1] = (GLfloat) (ctx->DrawBuffer->Height - 1); |
||
| 588 | value[2] = 1.0F; |
||
| 589 | value[3] = 0.0F; |
||
| 590 | } |
||
| 591 | return; |
||
| 592 | |||
| 593 | case STATE_ROT_MATRIX_0: |
||
| 594 | { |
||
| 595 | const int unit = (int) state[2]; |
||
| 596 | GLfloat *rotMat22 = ctx->Texture.Unit[unit].RotMatrix; |
||
| 597 | value[0] = rotMat22[0]; |
||
| 598 | value[1] = rotMat22[2]; |
||
| 599 | value[2] = 0.0; |
||
| 600 | value[3] = 0.0; |
||
| 601 | } |
||
| 602 | return; |
||
| 603 | |||
| 604 | case STATE_ROT_MATRIX_1: |
||
| 605 | { |
||
| 606 | const int unit = (int) state[2]; |
||
| 607 | GLfloat *rotMat22 = ctx->Texture.Unit[unit].RotMatrix; |
||
| 608 | value[0] = rotMat22[1]; |
||
| 609 | value[1] = rotMat22[3]; |
||
| 610 | value[2] = 0.0; |
||
| 611 | value[3] = 0.0; |
||
| 612 | } |
||
| 613 | return; |
||
| 614 | |||
| 615 | /* XXX: make sure new tokens added here are also handled in the |
||
| 616 | * _mesa_program_state_flags() switch, below. |
||
| 617 | */ |
||
| 618 | default: |
||
| 619 | /* Unknown state indexes are silently ignored here. |
||
| 620 | * Drivers may do something special. |
||
| 621 | */ |
||
| 622 | return; |
||
| 623 | } |
||
| 624 | return; |
||
| 625 | |||
| 626 | default: |
||
| 627 | _mesa_problem(ctx, "Invalid state in _mesa_fetch_state"); |
||
| 628 | return; |
||
| 629 | } |
||
| 630 | } |
||
| 631 | |||
| 632 | |||
| 633 | /** |
||
| 634 | * Return a bitmask of the Mesa state flags (_NEW_* values) which would |
||
| 635 | * indicate that the given context state may have changed. |
||
| 636 | * The bitmask is used during validation to determine if we need to update |
||
| 637 | * vertex/fragment program parameters (like "state.material.color") when |
||
| 638 | * some GL state has changed. |
||
| 639 | */ |
||
| 640 | GLbitfield |
||
| 641 | _mesa_program_state_flags(const gl_state_index state[STATE_LENGTH]) |
||
| 642 | { |
||
| 643 | switch (state[0]) { |
||
| 644 | case STATE_MATERIAL: |
||
| 645 | case STATE_LIGHT: |
||
| 646 | case STATE_LIGHTMODEL_AMBIENT: |
||
| 647 | case STATE_LIGHTMODEL_SCENECOLOR: |
||
| 648 | case STATE_LIGHTPROD: |
||
| 649 | return _NEW_LIGHT; |
||
| 650 | |||
| 651 | case STATE_TEXGEN: |
||
| 652 | case STATE_TEXENV_COLOR: |
||
| 653 | return _NEW_TEXTURE; |
||
| 654 | |||
| 655 | case STATE_FOG_COLOR: |
||
| 656 | case STATE_FOG_PARAMS: |
||
| 657 | return _NEW_FOG; |
||
| 658 | |||
| 659 | case STATE_CLIPPLANE: |
||
| 660 | return _NEW_TRANSFORM; |
||
| 661 | |||
| 662 | case STATE_POINT_SIZE: |
||
| 663 | case STATE_POINT_ATTENUATION: |
||
| 664 | return _NEW_POINT; |
||
| 665 | |||
| 666 | case STATE_MODELVIEW_MATRIX: |
||
| 667 | return _NEW_MODELVIEW; |
||
| 668 | case STATE_PROJECTION_MATRIX: |
||
| 669 | return _NEW_PROJECTION; |
||
| 670 | case STATE_MVP_MATRIX: |
||
| 671 | return _NEW_MODELVIEW | _NEW_PROJECTION; |
||
| 672 | case STATE_TEXTURE_MATRIX: |
||
| 673 | return _NEW_TEXTURE_MATRIX; |
||
| 674 | case STATE_PROGRAM_MATRIX: |
||
| 675 | return _NEW_TRACK_MATRIX; |
||
| 676 | |||
| 677 | case STATE_DEPTH_RANGE: |
||
| 678 | return _NEW_VIEWPORT; |
||
| 679 | |||
| 680 | case STATE_FRAGMENT_PROGRAM: |
||
| 681 | case STATE_VERTEX_PROGRAM: |
||
| 682 | return _NEW_PROGRAM; |
||
| 683 | |||
| 684 | case STATE_NORMAL_SCALE: |
||
| 685 | return _NEW_MODELVIEW; |
||
| 686 | |||
| 687 | case STATE_INTERNAL: |
||
| 688 | switch (state[1]) { |
||
| 689 | case STATE_CURRENT_ATTRIB: |
||
| 690 | return _NEW_CURRENT_ATTRIB; |
||
| 691 | |||
| 692 | case STATE_NORMAL_SCALE: |
||
| 693 | return _NEW_MODELVIEW; |
||
| 694 | |||
| 695 | case STATE_TEXRECT_SCALE: |
||
| 696 | case STATE_SHADOW_AMBIENT: |
||
| 697 | case STATE_ROT_MATRIX_0: |
||
| 698 | case STATE_ROT_MATRIX_1: |
||
| 699 | return _NEW_TEXTURE; |
||
| 700 | case STATE_FOG_PARAMS_OPTIMIZED: |
||
| 701 | return _NEW_FOG; |
||
| 702 | case STATE_POINT_SIZE_CLAMPED: |
||
| 703 | case STATE_POINT_SIZE_IMPL_CLAMP: |
||
| 704 | return _NEW_POINT | _NEW_MULTISAMPLE; |
||
| 705 | case STATE_LIGHT_SPOT_DIR_NORMALIZED: |
||
| 706 | case STATE_LIGHT_POSITION: |
||
| 707 | case STATE_LIGHT_POSITION_NORMALIZED: |
||
| 708 | case STATE_LIGHT_HALF_VECTOR: |
||
| 709 | return _NEW_LIGHT; |
||
| 710 | |||
| 711 | case STATE_PT_SCALE: |
||
| 712 | case STATE_PT_BIAS: |
||
| 713 | return _NEW_PIXEL; |
||
| 714 | |||
| 715 | case STATE_FB_SIZE: |
||
| 716 | case STATE_FB_WPOS_Y_TRANSFORM: |
||
| 717 | return _NEW_BUFFERS; |
||
| 718 | |||
| 719 | default: |
||
| 720 | /* unknown state indexes are silently ignored and |
||
| 721 | * no flag set, since it is handled by the driver. |
||
| 722 | */ |
||
| 723 | return 0; |
||
| 724 | } |
||
| 725 | |||
| 726 | default: |
||
| 727 | _mesa_problem(NULL, "unexpected state[0] in make_state_flags()"); |
||
| 728 | return 0; |
||
| 729 | } |
||
| 730 | } |
||
| 731 | |||
| 732 | |||
| 733 | static void |
||
| 734 | append(char *dst, const char *src) |
||
| 735 | { |
||
| 736 | while (*dst) |
||
| 737 | dst++; |
||
| 738 | while (*src) |
||
| 739 | *dst++ = *src++; |
||
| 740 | *dst = 0; |
||
| 741 | } |
||
| 742 | |||
| 743 | |||
| 744 | /** |
||
| 745 | * Convert token 'k' to a string, append it onto 'dst' string. |
||
| 746 | */ |
||
| 747 | static void |
||
| 748 | append_token(char *dst, gl_state_index k) |
||
| 749 | { |
||
| 750 | switch (k) { |
||
| 751 | case STATE_MATERIAL: |
||
| 752 | append(dst, "material"); |
||
| 753 | break; |
||
| 754 | case STATE_LIGHT: |
||
| 755 | append(dst, "light"); |
||
| 756 | break; |
||
| 757 | case STATE_LIGHTMODEL_AMBIENT: |
||
| 758 | append(dst, "lightmodel.ambient"); |
||
| 759 | break; |
||
| 760 | case STATE_LIGHTMODEL_SCENECOLOR: |
||
| 761 | break; |
||
| 762 | case STATE_LIGHTPROD: |
||
| 763 | append(dst, "lightprod"); |
||
| 764 | break; |
||
| 765 | case STATE_TEXGEN: |
||
| 766 | append(dst, "texgen"); |
||
| 767 | break; |
||
| 768 | case STATE_FOG_COLOR: |
||
| 769 | append(dst, "fog.color"); |
||
| 770 | break; |
||
| 771 | case STATE_FOG_PARAMS: |
||
| 772 | append(dst, "fog.params"); |
||
| 773 | break; |
||
| 774 | case STATE_CLIPPLANE: |
||
| 775 | append(dst, "clip"); |
||
| 776 | break; |
||
| 777 | case STATE_POINT_SIZE: |
||
| 778 | append(dst, "point.size"); |
||
| 779 | break; |
||
| 780 | case STATE_POINT_ATTENUATION: |
||
| 781 | append(dst, "point.attenuation"); |
||
| 782 | break; |
||
| 783 | case STATE_MODELVIEW_MATRIX: |
||
| 784 | append(dst, "matrix.modelview"); |
||
| 785 | break; |
||
| 786 | case STATE_PROJECTION_MATRIX: |
||
| 787 | append(dst, "matrix.projection"); |
||
| 788 | break; |
||
| 789 | case STATE_MVP_MATRIX: |
||
| 790 | append(dst, "matrix.mvp"); |
||
| 791 | break; |
||
| 792 | case STATE_TEXTURE_MATRIX: |
||
| 793 | append(dst, "matrix.texture"); |
||
| 794 | break; |
||
| 795 | case STATE_PROGRAM_MATRIX: |
||
| 796 | append(dst, "matrix.program"); |
||
| 797 | break; |
||
| 798 | case STATE_MATRIX_INVERSE: |
||
| 799 | append(dst, ".inverse"); |
||
| 800 | break; |
||
| 801 | case STATE_MATRIX_TRANSPOSE: |
||
| 802 | append(dst, ".transpose"); |
||
| 803 | break; |
||
| 804 | case STATE_MATRIX_INVTRANS: |
||
| 805 | append(dst, ".invtrans"); |
||
| 806 | break; |
||
| 807 | case STATE_AMBIENT: |
||
| 808 | append(dst, ".ambient"); |
||
| 809 | break; |
||
| 810 | case STATE_DIFFUSE: |
||
| 811 | append(dst, ".diffuse"); |
||
| 812 | break; |
||
| 813 | case STATE_SPECULAR: |
||
| 814 | append(dst, ".specular"); |
||
| 815 | break; |
||
| 816 | case STATE_EMISSION: |
||
| 817 | append(dst, ".emission"); |
||
| 818 | break; |
||
| 819 | case STATE_SHININESS: |
||
| 820 | append(dst, "lshininess"); |
||
| 821 | break; |
||
| 822 | case STATE_HALF_VECTOR: |
||
| 823 | append(dst, ".half"); |
||
| 824 | break; |
||
| 825 | case STATE_POSITION: |
||
| 826 | append(dst, ".position"); |
||
| 827 | break; |
||
| 828 | case STATE_ATTENUATION: |
||
| 829 | append(dst, ".attenuation"); |
||
| 830 | break; |
||
| 831 | case STATE_SPOT_DIRECTION: |
||
| 832 | append(dst, ".spot.direction"); |
||
| 833 | break; |
||
| 834 | case STATE_SPOT_CUTOFF: |
||
| 835 | append(dst, ".spot.cutoff"); |
||
| 836 | break; |
||
| 837 | case STATE_TEXGEN_EYE_S: |
||
| 838 | append(dst, ".eye.s"); |
||
| 839 | break; |
||
| 840 | case STATE_TEXGEN_EYE_T: |
||
| 841 | append(dst, ".eye.t"); |
||
| 842 | break; |
||
| 843 | case STATE_TEXGEN_EYE_R: |
||
| 844 | append(dst, ".eye.r"); |
||
| 845 | break; |
||
| 846 | case STATE_TEXGEN_EYE_Q: |
||
| 847 | append(dst, ".eye.q"); |
||
| 848 | break; |
||
| 849 | case STATE_TEXGEN_OBJECT_S: |
||
| 850 | append(dst, ".object.s"); |
||
| 851 | break; |
||
| 852 | case STATE_TEXGEN_OBJECT_T: |
||
| 853 | append(dst, ".object.t"); |
||
| 854 | break; |
||
| 855 | case STATE_TEXGEN_OBJECT_R: |
||
| 856 | append(dst, ".object.r"); |
||
| 857 | break; |
||
| 858 | case STATE_TEXGEN_OBJECT_Q: |
||
| 859 | append(dst, ".object.q"); |
||
| 860 | break; |
||
| 861 | case STATE_TEXENV_COLOR: |
||
| 862 | append(dst, "texenv"); |
||
| 863 | break; |
||
| 864 | case STATE_DEPTH_RANGE: |
||
| 865 | append(dst, "depth.range"); |
||
| 866 | break; |
||
| 867 | case STATE_VERTEX_PROGRAM: |
||
| 868 | case STATE_FRAGMENT_PROGRAM: |
||
| 869 | break; |
||
| 870 | case STATE_ENV: |
||
| 871 | append(dst, "env"); |
||
| 872 | break; |
||
| 873 | case STATE_LOCAL: |
||
| 874 | append(dst, "local"); |
||
| 875 | break; |
||
| 876 | /* BEGIN internal state vars */ |
||
| 877 | case STATE_INTERNAL: |
||
| 878 | append(dst, ".internal."); |
||
| 879 | break; |
||
| 880 | case STATE_CURRENT_ATTRIB: |
||
| 881 | append(dst, "current"); |
||
| 882 | break; |
||
| 883 | case STATE_NORMAL_SCALE: |
||
| 884 | append(dst, "normalScale"); |
||
| 885 | break; |
||
| 886 | case STATE_TEXRECT_SCALE: |
||
| 887 | append(dst, "texrectScale"); |
||
| 888 | break; |
||
| 889 | case STATE_FOG_PARAMS_OPTIMIZED: |
||
| 890 | append(dst, "fogParamsOptimized"); |
||
| 891 | break; |
||
| 892 | case STATE_POINT_SIZE_CLAMPED: |
||
| 893 | append(dst, "pointSizeClamped"); |
||
| 894 | break; |
||
| 895 | case STATE_POINT_SIZE_IMPL_CLAMP: |
||
| 896 | append(dst, "pointSizeImplClamp"); |
||
| 897 | break; |
||
| 898 | case STATE_LIGHT_SPOT_DIR_NORMALIZED: |
||
| 899 | append(dst, "lightSpotDirNormalized"); |
||
| 900 | break; |
||
| 901 | case STATE_LIGHT_POSITION: |
||
| 902 | append(dst, "lightPosition"); |
||
| 903 | break; |
||
| 904 | case STATE_LIGHT_POSITION_NORMALIZED: |
||
| 905 | append(dst, "light.position.normalized"); |
||
| 906 | break; |
||
| 907 | case STATE_LIGHT_HALF_VECTOR: |
||
| 908 | append(dst, "lightHalfVector"); |
||
| 909 | break; |
||
| 910 | case STATE_PT_SCALE: |
||
| 911 | append(dst, "PTscale"); |
||
| 912 | break; |
||
| 913 | case STATE_PT_BIAS: |
||
| 914 | append(dst, "PTbias"); |
||
| 915 | break; |
||
| 916 | case STATE_SHADOW_AMBIENT: |
||
| 917 | append(dst, "CompareFailValue"); |
||
| 918 | break; |
||
| 919 | case STATE_FB_SIZE: |
||
| 920 | append(dst, "FbSize"); |
||
| 921 | break; |
||
| 922 | case STATE_FB_WPOS_Y_TRANSFORM: |
||
| 923 | append(dst, "FbWposYTransform"); |
||
| 924 | break; |
||
| 925 | case STATE_ROT_MATRIX_0: |
||
| 926 | append(dst, "rotMatrixRow0"); |
||
| 927 | break; |
||
| 928 | case STATE_ROT_MATRIX_1: |
||
| 929 | append(dst, "rotMatrixRow1"); |
||
| 930 | break; |
||
| 931 | default: |
||
| 932 | /* probably STATE_INTERNAL_DRIVER+i (driver private state) */ |
||
| 933 | append(dst, "driverState"); |
||
| 934 | } |
||
| 935 | } |
||
| 936 | |||
| 937 | static void |
||
| 938 | append_face(char *dst, GLint face) |
||
| 939 | { |
||
| 940 | if (face == 0) |
||
| 941 | append(dst, "front."); |
||
| 942 | else |
||
| 943 | append(dst, "back."); |
||
| 944 | } |
||
| 945 | |||
| 946 | static void |
||
| 947 | append_index(char *dst, GLint index) |
||
| 948 | { |
||
| 949 | char s[20]; |
||
| 950 | sprintf(s, "[%d]", index); |
||
| 951 | append(dst, s); |
||
| 952 | } |
||
| 953 | |||
| 954 | /** |
||
| 955 | * Make a string from the given state vector. |
||
| 956 | * For example, return "state.matrix.texture[2].inverse". |
||
| 957 | * Use free() to deallocate the string. |
||
| 958 | */ |
||
| 959 | char * |
||
| 960 | _mesa_program_state_string(const gl_state_index state[STATE_LENGTH]) |
||
| 961 | { |
||
| 962 | char str[1000] = ""; |
||
| 963 | char tmp[30]; |
||
| 964 | |||
| 965 | append(str, "state."); |
||
| 966 | append_token(str, state[0]); |
||
| 967 | |||
| 968 | switch (state[0]) { |
||
| 969 | case STATE_MATERIAL: |
||
| 970 | append_face(str, state[1]); |
||
| 971 | append_token(str, state[2]); |
||
| 972 | break; |
||
| 973 | case STATE_LIGHT: |
||
| 974 | append_index(str, state[1]); /* light number [i]. */ |
||
| 975 | append_token(str, state[2]); /* coefficients */ |
||
| 976 | break; |
||
| 977 | case STATE_LIGHTMODEL_AMBIENT: |
||
| 978 | append(str, "lightmodel.ambient"); |
||
| 979 | break; |
||
| 980 | case STATE_LIGHTMODEL_SCENECOLOR: |
||
| 981 | if (state[1] == 0) { |
||
| 982 | append(str, "lightmodel.front.scenecolor"); |
||
| 983 | } |
||
| 984 | else { |
||
| 985 | append(str, "lightmodel.back.scenecolor"); |
||
| 986 | } |
||
| 987 | break; |
||
| 988 | case STATE_LIGHTPROD: |
||
| 989 | append_index(str, state[1]); /* light number [i]. */ |
||
| 990 | append_face(str, state[2]); |
||
| 991 | append_token(str, state[3]); |
||
| 992 | break; |
||
| 993 | case STATE_TEXGEN: |
||
| 994 | append_index(str, state[1]); /* tex unit [i] */ |
||
| 995 | append_token(str, state[2]); /* plane coef */ |
||
| 996 | break; |
||
| 997 | case STATE_TEXENV_COLOR: |
||
| 998 | append_index(str, state[1]); /* tex unit [i] */ |
||
| 999 | append(str, "color"); |
||
| 1000 | break; |
||
| 1001 | case STATE_CLIPPLANE: |
||
| 1002 | append_index(str, state[1]); /* plane [i] */ |
||
| 1003 | append(str, ".plane"); |
||
| 1004 | break; |
||
| 1005 | case STATE_MODELVIEW_MATRIX: |
||
| 1006 | case STATE_PROJECTION_MATRIX: |
||
| 1007 | case STATE_MVP_MATRIX: |
||
| 1008 | case STATE_TEXTURE_MATRIX: |
||
| 1009 | case STATE_PROGRAM_MATRIX: |
||
| 1010 | { |
||
| 1011 | /* state[0] = modelview, projection, texture, etc. */ |
||
| 1012 | /* state[1] = which texture matrix or program matrix */ |
||
| 1013 | /* state[2] = first row to fetch */ |
||
| 1014 | /* state[3] = last row to fetch */ |
||
| 1015 | /* state[4] = transpose, inverse or invtrans */ |
||
| 1016 | const gl_state_index mat = state[0]; |
||
| 1017 | const GLuint index = (GLuint) state[1]; |
||
| 1018 | const GLuint firstRow = (GLuint) state[2]; |
||
| 1019 | const GLuint lastRow = (GLuint) state[3]; |
||
| 1020 | const gl_state_index modifier = state[4]; |
||
| 1021 | if (index || |
||
| 1022 | mat == STATE_TEXTURE_MATRIX || |
||
| 1023 | mat == STATE_PROGRAM_MATRIX) |
||
| 1024 | append_index(str, index); |
||
| 1025 | if (modifier) |
||
| 1026 | append_token(str, modifier); |
||
| 1027 | if (firstRow == lastRow) |
||
| 1028 | sprintf(tmp, ".row[%d]", firstRow); |
||
| 1029 | else |
||
| 1030 | sprintf(tmp, ".row[%d..%d]", firstRow, lastRow); |
||
| 1031 | append(str, tmp); |
||
| 1032 | } |
||
| 1033 | break; |
||
| 1034 | case STATE_POINT_SIZE: |
||
| 1035 | break; |
||
| 1036 | case STATE_POINT_ATTENUATION: |
||
| 1037 | break; |
||
| 1038 | case STATE_FOG_PARAMS: |
||
| 1039 | break; |
||
| 1040 | case STATE_FOG_COLOR: |
||
| 1041 | break; |
||
| 1042 | case STATE_DEPTH_RANGE: |
||
| 1043 | break; |
||
| 1044 | case STATE_FRAGMENT_PROGRAM: |
||
| 1045 | case STATE_VERTEX_PROGRAM: |
||
| 1046 | /* state[1] = {STATE_ENV, STATE_LOCAL} */ |
||
| 1047 | /* state[2] = parameter index */ |
||
| 1048 | append_token(str, state[1]); |
||
| 1049 | append_index(str, state[2]); |
||
| 1050 | break; |
||
| 1051 | case STATE_NORMAL_SCALE: |
||
| 1052 | break; |
||
| 1053 | case STATE_INTERNAL: |
||
| 1054 | append_token(str, state[1]); |
||
| 1055 | if (state[1] == STATE_CURRENT_ATTRIB) |
||
| 1056 | append_index(str, state[2]); |
||
| 1057 | break; |
||
| 1058 | default: |
||
| 1059 | _mesa_problem(NULL, "Invalid state in _mesa_program_state_string"); |
||
| 1060 | break; |
||
| 1061 | } |
||
| 1062 | |||
| 1063 | return _mesa_strdup(str); |
||
| 1064 | } |
||
| 1065 | |||
| 1066 | |||
| 1067 | /** |
||
| 1068 | * Loop over all the parameters in a parameter list. If the parameter |
||
| 1069 | * is a GL state reference, look up the current value of that state |
||
| 1070 | * variable and put it into the parameter's Value[4] array. |
||
| 1071 | * Other parameter types never change or are explicitly set by the user |
||
| 1072 | * with glUniform() or glProgramParameter(), etc. |
||
| 1073 | * This would be called at glBegin time. |
||
| 1074 | */ |
||
| 1075 | void |
||
| 1076 | _mesa_load_state_parameters(struct gl_context *ctx, |
||
| 1077 | struct gl_program_parameter_list *paramList) |
||
| 1078 | { |
||
| 1079 | GLuint i; |
||
| 1080 | |||
| 1081 | if (!paramList) |
||
| 1082 | return; |
||
| 1083 | |||
| 1084 | for (i = 0; i < paramList->NumParameters; i++) { |
||
| 1085 | if (paramList->Parameters[i].Type == PROGRAM_STATE_VAR) { |
||
| 1086 | _mesa_fetch_state(ctx, |
||
| 1087 | paramList->Parameters[i].StateIndexes, |
||
| 1088 | paramList->ParameterValues[i]); |
||
| 1089 | } |
||
| 1090 | } |
||
| 1091 | } |
||
| 1092 | |||
| 1093 | |||
| 1094 | /** |
||
| 1095 | * Copy the 16 elements of a matrix into four consecutive program |
||
| 1096 | * registers starting at 'pos'. |
||
| 1097 | */ |
||
| 1098 | static void |
||
| 1099 | load_matrix(GLfloat registers[][4], GLuint pos, const GLfloat mat[16]) |
||
| 1100 | { |
||
| 1101 | GLuint i; |
||
| 1102 | for (i = 0; i < 4; i++) { |
||
| 1103 | registers[pos + i][0] = mat[0 + i]; |
||
| 1104 | registers[pos + i][1] = mat[4 + i]; |
||
| 1105 | registers[pos + i][2] = mat[8 + i]; |
||
| 1106 | registers[pos + i][3] = mat[12 + i]; |
||
| 1107 | } |
||
| 1108 | } |
||
| 1109 | |||
| 1110 | |||
| 1111 | /** |
||
| 1112 | * As above, but transpose the matrix. |
||
| 1113 | */ |
||
| 1114 | static void |
||
| 1115 | load_transpose_matrix(GLfloat registers[][4], GLuint pos, |
||
| 1116 | const GLfloat mat[16]) |
||
| 1117 | { |
||
| 1118 | memcpy(registers[pos], mat, 16 * sizeof(GLfloat)); |
||
| 1119 | } |
||
| 1120 | |||
| 1121 | |||
| 1122 | /** |
||
| 1123 | * Load current vertex program's parameter registers with tracked |
||
| 1124 | * matrices (if NV program). This only needs to be done per |
||
| 1125 | * glBegin/glEnd, not per-vertex. |
||
| 1126 | */ |
||
| 1127 | void |
||
| 1128 | _mesa_load_tracked_matrices(struct gl_context *ctx) |
||
| 1129 | { |
||
| 1130 | GLuint i; |
||
| 1131 | |||
| 1132 | for (i = 0; i < MAX_NV_VERTEX_PROGRAM_PARAMS / 4; i++) { |
||
| 1133 | /* point 'mat' at source matrix */ |
||
| 1134 | GLmatrix *mat; |
||
| 1135 | if (ctx->VertexProgram.TrackMatrix[i] == GL_MODELVIEW) { |
||
| 1136 | mat = ctx->ModelviewMatrixStack.Top; |
||
| 1137 | } |
||
| 1138 | else if (ctx->VertexProgram.TrackMatrix[i] == GL_PROJECTION) { |
||
| 1139 | mat = ctx->ProjectionMatrixStack.Top; |
||
| 1140 | } |
||
| 1141 | else if (ctx->VertexProgram.TrackMatrix[i] == GL_TEXTURE) { |
||
| 1142 | GLuint unit = MIN2(ctx->Texture.CurrentUnit, |
||
| 1143 | Elements(ctx->TextureMatrixStack) - 1); |
||
| 1144 | mat = ctx->TextureMatrixStack[unit].Top; |
||
| 1145 | } |
||
| 1146 | else if (ctx->VertexProgram.TrackMatrix[i]==GL_MODELVIEW_PROJECTION_NV) { |
||
| 1147 | /* XXX verify the combined matrix is up to date */ |
||
| 1148 | mat = &ctx->_ModelProjectMatrix; |
||
| 1149 | } |
||
| 1150 | else if (ctx->VertexProgram.TrackMatrix[i] >= GL_MATRIX0_NV && |
||
| 1151 | ctx->VertexProgram.TrackMatrix[i] <= GL_MATRIX7_NV) { |
||
| 1152 | GLuint n = ctx->VertexProgram.TrackMatrix[i] - GL_MATRIX0_NV; |
||
| 1153 | ASSERT(n < Elements(ctx->ProgramMatrixStack)); |
||
| 1154 | mat = ctx->ProgramMatrixStack[n].Top; |
||
| 1155 | } |
||
| 1156 | else { |
||
| 1157 | /* no matrix is tracked, but we leave the register values as-is */ |
||
| 1158 | assert(ctx->VertexProgram.TrackMatrix[i] == GL_NONE); |
||
| 1159 | continue; |
||
| 1160 | } |
||
| 1161 | |||
| 1162 | /* load the matrix values into sequential registers */ |
||
| 1163 | if (ctx->VertexProgram.TrackMatrixTransform[i] == GL_IDENTITY_NV) { |
||
| 1164 | load_matrix(ctx->VertexProgram.Parameters, i*4, mat->m); |
||
| 1165 | } |
||
| 1166 | else if (ctx->VertexProgram.TrackMatrixTransform[i] == GL_INVERSE_NV) { |
||
| 1167 | _math_matrix_analyse(mat); /* update the inverse */ |
||
| 1168 | ASSERT(!_math_matrix_is_dirty(mat)); |
||
| 1169 | load_matrix(ctx->VertexProgram.Parameters, i*4, mat->inv); |
||
| 1170 | } |
||
| 1171 | else if (ctx->VertexProgram.TrackMatrixTransform[i] == GL_TRANSPOSE_NV) { |
||
| 1172 | load_transpose_matrix(ctx->VertexProgram.Parameters, i*4, mat->m); |
||
| 1173 | } |
||
| 1174 | else { |
||
| 1175 | assert(ctx->VertexProgram.TrackMatrixTransform[i] |
||
| 1176 | == GL_INVERSE_TRANSPOSE_NV); |
||
| 1177 | _math_matrix_analyse(mat); /* update the inverse */ |
||
| 1178 | ASSERT(!_math_matrix_is_dirty(mat)); |
||
| 1179 | load_transpose_matrix(ctx->VertexProgram.Parameters, i*4, mat->inv); |
||
| 1180 | } |
||
| 1181 | } |
||
| 1182 | } |