The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | ** Copyright 2006, The Android Open Source Project |
| 3 | ** |
| 4 | ** Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | ** you may not use this file except in compliance with the License. |
| 6 | ** You may obtain a copy of the License at |
| 7 | ** |
| 8 | ** http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | ** |
| 10 | ** Unless required by applicable law or agreed to in writing, software |
| 11 | ** distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | ** See the License for the specific language governing permissions and |
| 14 | ** limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include <stdlib.h> |
| 18 | #include <stdio.h> |
| 19 | |
| 20 | #include "context.h" |
| 21 | #include "fp.h" |
| 22 | #include "state.h" |
| 23 | #include "matrix.h" |
| 24 | #include "vertex.h" |
| 25 | #include "light.h" |
| 26 | #include "primitives.h" |
| 27 | #include "texture.h" |
| 28 | #include "BufferObjectManager.h" |
| 29 | |
| 30 | // ---------------------------------------------------------------------------- |
| 31 | |
| 32 | #define VC_CACHE_STATISTICS 0 |
| 33 | #define VC_CACHE_TYPE_NONE 0 |
| 34 | #define VC_CACHE_TYPE_INDEXED 1 |
| 35 | #define VC_CACHE_TYPE_LRU 2 |
| 36 | #define VC_CACHE_TYPE VC_CACHE_TYPE_INDEXED |
| 37 | |
| 38 | #if VC_CACHE_STATISTICS |
| 39 | #include <utils/Timers.h> |
| 40 | #endif |
| 41 | |
| 42 | // ---------------------------------------------------------------------------- |
| 43 | |
| 44 | namespace android { |
| 45 | |
| 46 | static void validate_arrays(ogles_context_t* c, GLenum mode); |
| 47 | |
| 48 | static void compileElements__generic(ogles_context_t*, |
| 49 | vertex_t*, GLint, GLsizei); |
| 50 | static void compileElement__generic(ogles_context_t*, |
| 51 | vertex_t*, GLint); |
| 52 | |
| 53 | static void drawPrimitivesPoints(ogles_context_t*, GLint, GLsizei); |
| 54 | static void drawPrimitivesLineStrip(ogles_context_t*, GLint, GLsizei); |
| 55 | static void drawPrimitivesLineLoop(ogles_context_t*, GLint, GLsizei); |
| 56 | static void drawPrimitivesLines(ogles_context_t*, GLint, GLsizei); |
| 57 | static void drawPrimitivesTriangleStrip(ogles_context_t*, GLint, GLsizei); |
| 58 | static void drawPrimitivesTriangleFan(ogles_context_t*, GLint, GLsizei); |
| 59 | static void drawPrimitivesTriangles(ogles_context_t*, GLint, GLsizei); |
| 60 | |
| 61 | static void drawIndexedPrimitivesPoints(ogles_context_t*, |
| 62 | GLsizei, const GLvoid*); |
| 63 | static void drawIndexedPrimitivesLineStrip(ogles_context_t*, |
| 64 | GLsizei, const GLvoid*); |
| 65 | static void drawIndexedPrimitivesLineLoop(ogles_context_t*, |
| 66 | GLsizei, const GLvoid*); |
| 67 | static void drawIndexedPrimitivesLines(ogles_context_t*, |
| 68 | GLsizei, const GLvoid*); |
| 69 | static void drawIndexedPrimitivesTriangleStrip(ogles_context_t*, |
| 70 | GLsizei, const GLvoid*); |
| 71 | static void drawIndexedPrimitivesTriangleFan(ogles_context_t*, |
| 72 | GLsizei, const GLvoid*); |
| 73 | static void drawIndexedPrimitivesTriangles(ogles_context_t*, |
| 74 | GLsizei, const GLvoid*); |
| 75 | |
| 76 | // ---------------------------------------------------------------------------- |
| 77 | |
| 78 | typedef void (*arrays_prims_fct_t)(ogles_context_t*, GLint, GLsizei); |
| 79 | static const arrays_prims_fct_t drawArraysPrims[] = { |
| 80 | drawPrimitivesPoints, |
| 81 | drawPrimitivesLines, |
| 82 | drawPrimitivesLineLoop, |
| 83 | drawPrimitivesLineStrip, |
| 84 | drawPrimitivesTriangles, |
| 85 | drawPrimitivesTriangleStrip, |
| 86 | drawPrimitivesTriangleFan |
| 87 | }; |
| 88 | |
| 89 | typedef void (*elements_prims_fct_t)(ogles_context_t*, GLsizei, const GLvoid*); |
| 90 | static const elements_prims_fct_t drawElementsPrims[] = { |
| 91 | drawIndexedPrimitivesPoints, |
| 92 | drawIndexedPrimitivesLines, |
| 93 | drawIndexedPrimitivesLineLoop, |
| 94 | drawIndexedPrimitivesLineStrip, |
| 95 | drawIndexedPrimitivesTriangles, |
| 96 | drawIndexedPrimitivesTriangleStrip, |
| 97 | drawIndexedPrimitivesTriangleFan |
| 98 | }; |
| 99 | |
| 100 | // ---------------------------------------------------------------------------- |
| 101 | #if 0 |
| 102 | #pragma mark - |
| 103 | #endif |
| 104 | |
| 105 | void ogles_init_array(ogles_context_t* c) |
| 106 | { |
| 107 | c->arrays.vertex.size = 4; |
| 108 | c->arrays.vertex.type = GL_FLOAT; |
| 109 | c->arrays.color.size = 4; |
| 110 | c->arrays.color.type = GL_FLOAT; |
| 111 | c->arrays.normal.size = 4; |
| 112 | c->arrays.normal.type = GL_FLOAT; |
| 113 | for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; i++) { |
| 114 | c->arrays.texture[i].size = 4; |
| 115 | c->arrays.texture[i].type = GL_FLOAT; |
| 116 | } |
| 117 | c->vc.init(); |
| 118 | |
| 119 | if (!c->vc.vBuffer) { |
| 120 | // this could have failed |
| 121 | ogles_error(c, GL_OUT_OF_MEMORY); |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | void ogles_uninit_array(ogles_context_t* c) |
| 126 | { |
| 127 | c->vc.uninit(); |
| 128 | } |
| 129 | |
| 130 | // ---------------------------------------------------------------------------- |
| 131 | #if 0 |
| 132 | #pragma mark - |
| 133 | #pragma mark Array fetchers |
| 134 | #endif |
| 135 | |
| 136 | static void currentColor(ogles_context_t* c, GLfixed* v, const GLvoid*) { |
| 137 | memcpy(v, c->current.color.v, sizeof(vec4_t)); |
| 138 | } |
| 139 | static void currentColor_clamp(ogles_context_t* c, GLfixed* v, const GLvoid*) { |
| 140 | memcpy(v, c->currentColorClamped.v, sizeof(vec4_t)); |
| 141 | } |
| 142 | static void currentNormal(ogles_context_t* c, GLfixed* v, const GLvoid*) { |
| 143 | memcpy(v, c->currentNormal.v, sizeof(vec3_t)); |
| 144 | } |
| 145 | static void currentTexCoord(ogles_context_t* c, GLfixed* v, const GLvoid*) { |
| 146 | memcpy(v, c->current.texture[c->arrays.tmu].v, sizeof(vec4_t)); |
| 147 | } |
| 148 | |
| 149 | |
| 150 | static void fetchNop(ogles_context_t*, GLfixed*, const GLvoid*) { |
| 151 | } |
| 152 | static void fetch2b(ogles_context_t*, GLfixed* v, const GLbyte* p) { |
| 153 | v[0] = gglIntToFixed(p[0]); |
| 154 | v[1] = gglIntToFixed(p[1]); |
| 155 | } |
| 156 | static void fetch2s(ogles_context_t*, GLfixed* v, const GLshort* p) { |
| 157 | v[0] = gglIntToFixed(p[0]); |
| 158 | v[1] = gglIntToFixed(p[1]); |
| 159 | } |
| 160 | static void fetch2x(ogles_context_t*, GLfixed* v, const GLfixed* p) { |
| 161 | memcpy(v, p, 2*sizeof(GLfixed)); |
| 162 | } |
| 163 | static void fetch2f(ogles_context_t*, GLfixed* v, const GLfloat* p) { |
| 164 | v[0] = gglFloatToFixed(p[0]); |
| 165 | v[1] = gglFloatToFixed(p[1]); |
| 166 | } |
| 167 | static void fetch3b(ogles_context_t*, GLfixed* v, const GLbyte* p) { |
| 168 | v[0] = gglIntToFixed(p[0]); |
| 169 | v[1] = gglIntToFixed(p[1]); |
| 170 | v[2] = gglIntToFixed(p[2]); |
| 171 | } |
| 172 | static void fetch3s(ogles_context_t*, GLfixed* v, const GLshort* p) { |
| 173 | v[0] = gglIntToFixed(p[0]); |
| 174 | v[1] = gglIntToFixed(p[1]); |
| 175 | v[2] = gglIntToFixed(p[2]); |
| 176 | } |
| 177 | static void fetch3x(ogles_context_t*, GLfixed* v, const GLfixed* p) { |
| 178 | memcpy(v, p, 3*sizeof(GLfixed)); |
| 179 | } |
| 180 | static void fetch3f(ogles_context_t*, GLfixed* v, const GLfloat* p) { |
| 181 | v[0] = gglFloatToFixed(p[0]); |
| 182 | v[1] = gglFloatToFixed(p[1]); |
| 183 | v[2] = gglFloatToFixed(p[2]); |
| 184 | } |
| 185 | static void fetch4b(ogles_context_t*, GLfixed* v, const GLbyte* p) { |
| 186 | v[0] = gglIntToFixed(p[0]); |
| 187 | v[1] = gglIntToFixed(p[1]); |
| 188 | v[2] = gglIntToFixed(p[2]); |
| 189 | v[3] = gglIntToFixed(p[3]); |
| 190 | } |
| 191 | static void fetch4s(ogles_context_t*, GLfixed* v, const GLshort* p) { |
| 192 | v[0] = gglIntToFixed(p[0]); |
| 193 | v[1] = gglIntToFixed(p[1]); |
| 194 | v[2] = gglIntToFixed(p[2]); |
| 195 | v[3] = gglIntToFixed(p[3]); |
| 196 | } |
| 197 | static void fetch4x(ogles_context_t*, GLfixed* v, const GLfixed* p) { |
| 198 | memcpy(v, p, 4*sizeof(GLfixed)); |
| 199 | } |
| 200 | static void fetch4f(ogles_context_t*, GLfixed* v, const GLfloat* p) { |
| 201 | v[0] = gglFloatToFixed(p[0]); |
| 202 | v[1] = gglFloatToFixed(p[1]); |
| 203 | v[2] = gglFloatToFixed(p[2]); |
| 204 | v[3] = gglFloatToFixed(p[3]); |
| 205 | } |
| 206 | static void fetchExpand4ub(ogles_context_t*, GLfixed* v, const GLubyte* p) { |
| 207 | v[0] = GGL_UB_TO_X(p[0]); |
| 208 | v[1] = GGL_UB_TO_X(p[1]); |
| 209 | v[2] = GGL_UB_TO_X(p[2]); |
| 210 | v[3] = GGL_UB_TO_X(p[3]); |
| 211 | } |
| 212 | static void fetchClamp4x(ogles_context_t*, GLfixed* v, const GLfixed* p) { |
| 213 | v[0] = gglClampx(p[0]); |
| 214 | v[1] = gglClampx(p[1]); |
| 215 | v[2] = gglClampx(p[2]); |
| 216 | v[3] = gglClampx(p[3]); |
| 217 | } |
| 218 | static void fetchClamp4f(ogles_context_t*, GLfixed* v, const GLfloat* p) { |
| 219 | v[0] = gglClampx(gglFloatToFixed(p[0])); |
| 220 | v[1] = gglClampx(gglFloatToFixed(p[1])); |
| 221 | v[2] = gglClampx(gglFloatToFixed(p[2])); |
| 222 | v[3] = gglClampx(gglFloatToFixed(p[3])); |
| 223 | } |
| 224 | static void fetchExpand3ub(ogles_context_t*, GLfixed* v, const GLubyte* p) { |
| 225 | v[0] = GGL_UB_TO_X(p[0]); |
| 226 | v[1] = GGL_UB_TO_X(p[1]); |
| 227 | v[2] = GGL_UB_TO_X(p[2]); |
| 228 | v[3] = 0x10000; |
| 229 | } |
| 230 | static void fetchClamp3x(ogles_context_t*, GLfixed* v, const GLfixed* p) { |
| 231 | v[0] = gglClampx(p[0]); |
| 232 | v[1] = gglClampx(p[1]); |
| 233 | v[2] = gglClampx(p[2]); |
| 234 | v[3] = 0x10000; |
| 235 | } |
| 236 | static void fetchClamp3f(ogles_context_t*, GLfixed* v, const GLfloat* p) { |
| 237 | v[0] = gglClampx(gglFloatToFixed(p[0])); |
| 238 | v[1] = gglClampx(gglFloatToFixed(p[1])); |
| 239 | v[2] = gglClampx(gglFloatToFixed(p[2])); |
| 240 | v[3] = 0x10000; |
| 241 | } |
| 242 | static void fetchExpand3b(ogles_context_t*, GLfixed* v, const GLbyte* p) { |
| 243 | v[0] = GGL_B_TO_X(p[0]); |
| 244 | v[1] = GGL_B_TO_X(p[1]); |
| 245 | v[2] = GGL_B_TO_X(p[2]); |
| 246 | } |
| 247 | static void fetchExpand3s(ogles_context_t*, GLfixed* v, const GLshort* p) { |
| 248 | v[0] = GGL_S_TO_X(p[0]); |
| 249 | v[1] = GGL_S_TO_X(p[1]); |
| 250 | v[2] = GGL_S_TO_X(p[2]); |
| 251 | } |
| 252 | |
| 253 | typedef array_t::fetcher_t fn_t; |
| 254 | |
| 255 | static const fn_t color_fct[2][16] = { // size={3,4}, type={ub,f,x} |
| 256 | { 0, (fn_t)fetchExpand3ub, 0, 0, 0, 0, |
| 257 | (fn_t)fetch3f, 0, 0, 0, 0, 0, |
| 258 | (fn_t)fetch3x }, |
| 259 | { 0, (fn_t)fetchExpand4ub, 0, 0, 0, 0, |
| 260 | (fn_t)fetch4f, 0, 0, 0, 0, 0, |
| 261 | (fn_t)fetch4x }, |
| 262 | }; |
| 263 | static const fn_t color_clamp_fct[2][16] = { // size={3,4}, type={ub,f,x} |
| 264 | { 0, (fn_t)fetchExpand3ub, 0, 0, 0, 0, |
| 265 | (fn_t)fetchClamp3f, 0, 0, 0, 0, 0, |
| 266 | (fn_t)fetchClamp3x }, |
| 267 | { 0, (fn_t)fetchExpand4ub, 0, 0, 0, 0, |
| 268 | (fn_t)fetchClamp4f, 0, 0, 0, 0, 0, |
| 269 | (fn_t)fetchClamp4x }, |
| 270 | }; |
| 271 | static const fn_t normal_fct[1][16] = { // size={3}, type={b,s,f,x} |
| 272 | { (fn_t)fetchExpand3b, 0, |
| 273 | (fn_t)fetchExpand3s, 0, 0, 0, |
| 274 | (fn_t)fetch3f, 0, 0, 0, 0, 0, |
| 275 | (fn_t)fetch3x }, |
| 276 | }; |
| 277 | static const fn_t vertex_fct[3][16] = { // size={2,3,4}, type={b,s,f,x} |
| 278 | { (fn_t)fetch2b, 0, |
| 279 | (fn_t)fetch2s, 0, 0, 0, |
| 280 | (fn_t)fetch2f, 0, 0, 0, 0, 0, |
| 281 | (fn_t)fetch3x }, |
| 282 | { (fn_t)fetch3b, 0, |
| 283 | (fn_t)fetch3s, 0, 0, 0, |
| 284 | (fn_t)fetch3f, 0, 0, 0, 0, 0, |
| 285 | (fn_t)fetch3x }, |
| 286 | { (fn_t)fetch4b, 0, |
| 287 | (fn_t)fetch4s, 0, 0, 0, |
| 288 | (fn_t)fetch4f, 0, 0, 0, 0, 0, |
| 289 | (fn_t)fetch4x } |
| 290 | }; |
| 291 | static const fn_t texture_fct[3][16] = { // size={2,3,4}, type={b,s,f,x} |
| 292 | { (fn_t)fetch2b, 0, |
| 293 | (fn_t)fetch2s, 0, 0, 0, |
| 294 | (fn_t)fetch2f, 0, 0, 0, 0, 0, |
| 295 | (fn_t)fetch2x }, |
| 296 | { (fn_t)fetch3b, 0, |
| 297 | (fn_t)fetch3s, 0, 0, 0, |
| 298 | (fn_t)fetch3f, 0, 0, 0, 0, 0, |
| 299 | (fn_t)fetch3x }, |
| 300 | { (fn_t)fetch4b, 0, |
| 301 | (fn_t)fetch4s, 0, 0, 0, |
| 302 | (fn_t)fetch4f, 0, 0, 0, 0, 0, |
| 303 | (fn_t)fetch4x } |
| 304 | }; |
| 305 | |
| 306 | // ---------------------------------------------------------------------------- |
| 307 | #if 0 |
| 308 | #pragma mark - |
| 309 | #pragma mark array_t |
| 310 | #endif |
| 311 | |
| 312 | void array_t::init( |
| 313 | GLint size, GLenum type, GLsizei stride, |
| 314 | const GLvoid *pointer, const buffer_t* bo, GLsizei count) |
| 315 | { |
| 316 | if (!stride) { |
| 317 | stride = size; |
| 318 | switch (type) { |
| 319 | case GL_SHORT: |
| 320 | case GL_UNSIGNED_SHORT: |
| 321 | stride *= 2; |
| 322 | break; |
| 323 | case GL_FLOAT: |
| 324 | case GL_FIXED: |
| 325 | stride *= 4; |
| 326 | break; |
| 327 | } |
| 328 | } |
| 329 | this->size = size; |
| 330 | this->type = type; |
| 331 | this->stride = stride; |
| 332 | this->pointer = pointer; |
| 333 | this->bo = bo; |
| 334 | this->bounds = count; |
| 335 | } |
| 336 | |
| 337 | inline void array_t::resolve() |
| 338 | { |
| 339 | physical_pointer = (bo) ? (bo->data + uintptr_t(pointer)) : pointer; |
| 340 | } |
| 341 | |
| 342 | // ---------------------------------------------------------------------------- |
| 343 | #if 0 |
| 344 | #pragma mark - |
| 345 | #pragma mark vertex_cache_t |
| 346 | #endif |
| 347 | |
| 348 | void vertex_cache_t::init() |
| 349 | { |
| 350 | // make sure the size of vertex_t allows cache-line alignment |
| 351 | CTA<(sizeof(vertex_t) & 0x1F) == 0> assertAlignedSize; |
| 352 | |
| 353 | const int align = 32; |
| 354 | const size_t s = VERTEX_BUFFER_SIZE + VERTEX_CACHE_SIZE; |
| 355 | const size_t size = s*sizeof(vertex_t) + align; |
| 356 | base = malloc(size); |
| 357 | if (base) { |
| 358 | memset(base, 0, size); |
| 359 | vBuffer = (vertex_t*)((size_t(base) + align - 1) & ~(align-1)); |
| 360 | vCache = vBuffer + VERTEX_BUFFER_SIZE; |
| 361 | sequence = 0; |
| 362 | } |
| 363 | } |
| 364 | |
| 365 | void vertex_cache_t::uninit() |
| 366 | { |
| 367 | free(base); |
| 368 | base = vBuffer = vCache = 0; |
| 369 | } |
| 370 | |
| 371 | void vertex_cache_t::clear() |
| 372 | { |
| 373 | #if VC_CACHE_STATISTICS |
| 374 | startTime = systemTime(SYSTEM_TIME_THREAD); |
| 375 | total = 0; |
| 376 | misses = 0; |
| 377 | #endif |
| 378 | |
| 379 | #if VC_CACHE_TYPE == VC_CACHE_TYPE_LRU |
| 380 | vertex_t* v = vBuffer; |
| 381 | size_t count = VERTEX_BUFFER_SIZE + VERTEX_CACHE_SIZE; |
| 382 | do { |
| 383 | v->mru = 0; |
| 384 | v++; |
| 385 | } while (--count); |
| 386 | #endif |
| 387 | |
| 388 | sequence += INDEX_SEQ; |
| 389 | if (sequence >= 0x80000000LU) { |
| 390 | sequence = INDEX_SEQ; |
| 391 | vertex_t* v = vBuffer; |
| 392 | size_t count = VERTEX_BUFFER_SIZE + VERTEX_CACHE_SIZE; |
| 393 | do { |
| 394 | v->index = 0; |
| 395 | v++; |
| 396 | } while (--count); |
| 397 | } |
| 398 | } |
| 399 | |
| 400 | void vertex_cache_t::dump_stats(GLenum mode) |
| 401 | { |
| 402 | #if VC_CACHE_STATISTICS |
| 403 | nsecs_t time = systemTime(SYSTEM_TIME_THREAD) - startTime; |
| 404 | uint32_t hits = total - misses; |
| 405 | uint32_t prim_count; |
| 406 | switch (mode) { |
| 407 | case GL_POINTS: prim_count = total; break; |
| 408 | case GL_LINE_STRIP: prim_count = total - 1; break; |
| 409 | case GL_LINE_LOOP: prim_count = total - 1; break; |
| 410 | case GL_LINES: prim_count = total / 2; break; |
| 411 | case GL_TRIANGLE_STRIP: prim_count = total - 2; break; |
| 412 | case GL_TRIANGLE_FAN: prim_count = total - 2; break; |
| 413 | case GL_TRIANGLES: prim_count = total / 3; break; |
| 414 | default: return; |
| 415 | } |
| 416 | printf( "total=%5u, hits=%5u, miss=%5u, hitrate=%3u%%," |
| 417 | " prims=%5u, time=%6u us, prims/s=%d, v/t=%f\n", |
| 418 | total, hits, misses, (hits*100)/total, |
| 419 | prim_count, int(ns2us(time)), int(prim_count*float(seconds(1))/time), |
| 420 | float(misses) / prim_count); |
| 421 | #endif |
| 422 | } |
| 423 | |
| 424 | // ---------------------------------------------------------------------------- |
| 425 | #if 0 |
| 426 | #pragma mark - |
| 427 | #endif |
| 428 | |
| 429 | static __attribute__((noinline)) |
| 430 | void enableDisableClientState(ogles_context_t* c, GLenum array, bool enable) |
| 431 | { |
| 432 | const int tmu = c->arrays.activeTexture; |
| 433 | array_t* a; |
| 434 | switch (array) { |
| 435 | case GL_COLOR_ARRAY: a = &c->arrays.color; break; |
| 436 | case GL_NORMAL_ARRAY: a = &c->arrays.normal; break; |
| 437 | case GL_TEXTURE_COORD_ARRAY: a = &c->arrays.texture[tmu]; break; |
| 438 | case GL_VERTEX_ARRAY: a = &c->arrays.vertex; break; |
| 439 | default: |
| 440 | ogles_error(c, GL_INVALID_ENUM); |
| 441 | return; |
| 442 | } |
| 443 | a->enable = enable ? GL_TRUE : GL_FALSE; |
| 444 | } |
| 445 | |
| 446 | // ---------------------------------------------------------------------------- |
| 447 | #if 0 |
| 448 | #pragma mark - |
| 449 | #pragma mark Vertex Cache |
| 450 | #endif |
| 451 | |
| 452 | static __attribute__((noinline)) |
| 453 | vertex_t* cache_vertex(ogles_context_t* c, vertex_t* v, uint32_t index) |
| 454 | { |
| 455 | #if VC_CACHE_STATISTICS |
| 456 | c->vc.misses++; |
| 457 | #endif |
| 458 | if (ggl_unlikely(v->locked)) { |
| 459 | // we're just looking for an entry in the cache that is not locked. |
| 460 | // and we know that there cannot be more than 2 locked entries |
| 461 | // because a triangle needs at most 3 vertices. |
| 462 | // We never use the first and second entries because they might be in |
| 463 | // use by the striper or faner. Any other entry will do as long as |
| 464 | // it's not locked. |
| 465 | // We compute directly the index of a "free" entry from the locked |
| 466 | // state of v[2] and v[3]. |
| 467 | v = c->vc.vBuffer + 2; |
| 468 | v += v[0].locked | (v[1].locked<<1); |
| 469 | } |
| 470 | // note: compileElement clears v->flags |
| 471 | c->arrays.compileElement(c, v, index); |
| 472 | v->locked = 1; |
| 473 | return v; |
| 474 | } |
| 475 | |
| 476 | static __attribute__((noinline)) |
| 477 | vertex_t* fetch_vertex(ogles_context_t* c, size_t index) |
| 478 | { |
| 479 | index |= c->vc.sequence; |
| 480 | |
| 481 | #if VC_CACHE_TYPE == VC_CACHE_TYPE_INDEXED |
| 482 | |
| 483 | vertex_t* const v = c->vc.vCache + |
| 484 | (index & (vertex_cache_t::VERTEX_CACHE_SIZE-1)); |
| 485 | |
| 486 | if (ggl_likely(v->index == index)) { |
| 487 | v->locked = 1; |
| 488 | return v; |
| 489 | } |
| 490 | return cache_vertex(c, v, index); |
| 491 | |
| 492 | #elif VC_CACHE_TYPE == VC_CACHE_TYPE_LRU |
| 493 | |
| 494 | vertex_t* v = c->vc.vCache + |
| 495 | (index & ((vertex_cache_t::VERTEX_CACHE_SIZE-1)>>1))*2; |
| 496 | |
| 497 | // always record LRU in v[0] |
| 498 | if (ggl_likely(v[0].index == index)) { |
| 499 | v[0].locked = 1; |
| 500 | v[0].mru = 0; |
| 501 | return &v[0]; |
| 502 | } |
| 503 | |
| 504 | if (ggl_likely(v[1].index == index)) { |
| 505 | v[1].locked = 1; |
| 506 | v[0].mru = 1; |
| 507 | return &v[1]; |
| 508 | } |
| 509 | |
| 510 | const int lru = 1 - v[0].mru; |
| 511 | v[0].mru = lru; |
| 512 | return cache_vertex(c, &v[lru], index); |
| 513 | |
| 514 | #elif VC_CACHE_TYPE == VC_CACHE_TYPE_NONE |
| 515 | |
| 516 | // just for debugging... |
| 517 | vertex_t* v = c->vc.vBuffer + 2; |
| 518 | return cache_vertex(c, v, index); |
| 519 | |
| 520 | #endif |
| 521 | } |
| 522 | |
| 523 | // ---------------------------------------------------------------------------- |
| 524 | #if 0 |
| 525 | #pragma mark - |
| 526 | #pragma mark Primitive Assembly |
| 527 | #endif |
| 528 | |
| 529 | void drawPrimitivesPoints(ogles_context_t* c, GLint first, GLsizei count) |
| 530 | { |
| 531 | if (ggl_unlikely(count < 1)) |
| 532 | return; |
| 533 | |
| 534 | // vertex cache size must be multiple of 1 |
| 535 | const GLsizei vcs = |
| 536 | (vertex_cache_t::VERTEX_BUFFER_SIZE + |
| 537 | vertex_cache_t::VERTEX_CACHE_SIZE); |
| 538 | do { |
| 539 | vertex_t* v = c->vc.vBuffer; |
| 540 | GLsizei num = count > vcs ? vcs : count; |
| 541 | c->arrays.cull = vertex_t::CLIP_ALL; |
| 542 | c->arrays.compileElements(c, v, first, num); |
| 543 | first += num; |
| 544 | count -= num; |
| 545 | if (!c->arrays.cull) { |
| 546 | // quick/trivial reject of the whole batch |
| 547 | do { |
| 548 | const uint32_t cc = v[0].flags; |
| 549 | if (ggl_likely(!(cc & vertex_t::CLIP_ALL))) |
| 550 | c->prims.renderPoint(c, v); |
| 551 | v++; |
| 552 | num--; |
| 553 | } while (num); |
| 554 | } |
| 555 | } while (count); |
| 556 | } |
| 557 | |
| 558 | // ---------------------------------------------------------------------------- |
| 559 | |
| 560 | void drawPrimitivesLineStrip(ogles_context_t* c, GLint first, GLsizei count) |
| 561 | { |
| 562 | if (ggl_unlikely(count < 2)) |
| 563 | return; |
| 564 | |
| 565 | vertex_t *v, *v0, *v1; |
| 566 | c->arrays.cull = vertex_t::CLIP_ALL; |
| 567 | c->arrays.compileElement(c, c->vc.vBuffer, first); |
| 568 | first += 1; |
| 569 | count -= 1; |
| 570 | |
| 571 | // vertex cache size must be multiple of 1 |
| 572 | const GLsizei vcs = |
| 573 | (vertex_cache_t::VERTEX_BUFFER_SIZE + |
| 574 | vertex_cache_t::VERTEX_CACHE_SIZE - 1); |
| 575 | do { |
| 576 | v0 = c->vc.vBuffer + 0; |
| 577 | v = c->vc.vBuffer + 1; |
| 578 | GLsizei num = count > vcs ? vcs : count; |
| 579 | c->arrays.compileElements(c, v, first, num); |
| 580 | first += num; |
| 581 | count -= num; |
| 582 | if (!c->arrays.cull) { |
| 583 | // quick/trivial reject of the whole batch |
| 584 | do { |
| 585 | v1 = v++; |
| 586 | const uint32_t cc = v0->flags & v1->flags; |
| 587 | if (ggl_likely(!(cc & vertex_t::CLIP_ALL))) |
| 588 | c->prims.renderLine(c, v0, v1); |
| 589 | v0 = v1; |
| 590 | num--; |
| 591 | } while (num); |
| 592 | } |
| 593 | // copy back the last processed vertex |
| 594 | c->vc.vBuffer[0] = *v0; |
| 595 | c->arrays.cull = v0->flags & vertex_t::CLIP_ALL; |
| 596 | } while (count); |
| 597 | } |
| 598 | |
| 599 | void drawPrimitivesLineLoop(ogles_context_t* c, GLint first, GLsizei count) |
| 600 | { |
| 601 | if (ggl_unlikely(count < 2)) |
| 602 | return; |
| 603 | drawPrimitivesLineStrip(c, first, count); |
| 604 | if (ggl_likely(count >= 3)) { |
| 605 | vertex_t* v0 = c->vc.vBuffer; |
| 606 | vertex_t* v1 = c->vc.vBuffer + 1; |
| 607 | c->arrays.compileElement(c, v1, first); |
| 608 | const uint32_t cc = v0->flags & v1->flags; |
| 609 | if (ggl_likely(!(cc & vertex_t::CLIP_ALL))) |
| 610 | c->prims.renderLine(c, v0, v1); |
| 611 | } |
| 612 | } |
| 613 | |
| 614 | void drawPrimitivesLines(ogles_context_t* c, GLint first, GLsizei count) |
| 615 | { |
| 616 | if (ggl_unlikely(count < 2)) |
| 617 | return; |
| 618 | |
| 619 | // vertex cache size must be multiple of 2 |
| 620 | const GLsizei vcs = |
| 621 | ((vertex_cache_t::VERTEX_BUFFER_SIZE + |
| 622 | vertex_cache_t::VERTEX_CACHE_SIZE) / 2) * 2; |
| 623 | do { |
| 624 | vertex_t* v = c->vc.vBuffer; |
| 625 | GLsizei num = count > vcs ? vcs : count; |
| 626 | c->arrays.cull = vertex_t::CLIP_ALL; |
| 627 | c->arrays.compileElements(c, v, first, num); |
| 628 | first += num; |
| 629 | count -= num; |
| 630 | if (!c->arrays.cull) { |
| 631 | // quick/trivial reject of the whole batch |
| 632 | num -= 2; |
| 633 | do { |
| 634 | const uint32_t cc = v[0].flags & v[1].flags; |
| 635 | if (ggl_likely(!(cc & vertex_t::CLIP_ALL))) |
| 636 | c->prims.renderLine(c, v, v+1); |
| 637 | v += 2; |
| 638 | num -= 2; |
| 639 | } while (num >= 0); |
| 640 | } |
| 641 | } while (count >= 2); |
| 642 | } |
| 643 | |
| 644 | // ---------------------------------------------------------------------------- |
| 645 | |
| 646 | static void drawPrimitivesTriangleFanOrStrip(ogles_context_t* c, |
| 647 | GLint first, GLsizei count, int winding) |
| 648 | { |
| 649 | // winding == 2 : fan |
| 650 | // winding == 1 : strip |
| 651 | |
| 652 | if (ggl_unlikely(count < 3)) |
| 653 | return; |
| 654 | |
| 655 | vertex_t *v, *v0, *v1, *v2; |
| 656 | c->arrays.cull = vertex_t::CLIP_ALL; |
| 657 | c->arrays.compileElements(c, c->vc.vBuffer, first, 2); |
| 658 | first += 2; |
| 659 | count -= 2; |
| 660 | |
| 661 | // vertex cache size must be multiple of 2. This is extremely important |
| 662 | // because it allows us to preserve the same winding when the whole |
| 663 | // batch is culled. We also need 2 extra vertices in the array, because |
| 664 | // we always keep the two first ones. |
| 665 | const GLsizei vcs = |
| 666 | ((vertex_cache_t::VERTEX_BUFFER_SIZE + |
| 667 | vertex_cache_t::VERTEX_CACHE_SIZE - 2) / 2) * 2; |
| 668 | do { |
| 669 | v0 = c->vc.vBuffer + 0; |
| 670 | v1 = c->vc.vBuffer + 1; |
| 671 | v = c->vc.vBuffer + 2; |
| 672 | GLsizei num = count > vcs ? vcs : count; |
| 673 | c->arrays.compileElements(c, v, first, num); |
| 674 | first += num; |
| 675 | count -= num; |
| 676 | if (!c->arrays.cull) { |
| 677 | // quick/trivial reject of the whole batch |
| 678 | do { |
| 679 | v2 = v++; |
| 680 | const uint32_t cc = v0->flags & v1->flags & v2->flags; |
| 681 | if (ggl_likely(!(cc & vertex_t::CLIP_ALL))) |
| 682 | c->prims.renderTriangle(c, v0, v1, v2); |
| 683 | swap(((winding^=1) ? v1 : v0), v2); |
| 684 | num--; |
| 685 | } while (num); |
| 686 | } |
| 687 | if (count) { |
| 688 | v0 = c->vc.vBuffer + 2 + num - 2; |
| 689 | v1 = c->vc.vBuffer + 2 + num - 1; |
| 690 | if ((winding&2) == 0) { |
| 691 | // for strips copy back the two last compiled vertices |
| 692 | c->vc.vBuffer[0] = *v0; |
| 693 | } |
| 694 | c->vc.vBuffer[1] = *v1; |
| 695 | c->arrays.cull = v0->flags & v1->flags & vertex_t::CLIP_ALL; |
| 696 | } |
| 697 | } while (count > 0); |
| 698 | } |
| 699 | |
| 700 | void drawPrimitivesTriangleStrip(ogles_context_t* c, |
| 701 | GLint first, GLsizei count) { |
| 702 | drawPrimitivesTriangleFanOrStrip(c, first, count, 1); |
| 703 | } |
| 704 | |
| 705 | void drawPrimitivesTriangleFan(ogles_context_t* c, |
| 706 | GLint first, GLsizei count) { |
| 707 | drawPrimitivesTriangleFanOrStrip(c, first, count, 2); |
| 708 | } |
| 709 | |
| 710 | void drawPrimitivesTriangles(ogles_context_t* c, GLint first, GLsizei count) |
| 711 | { |
| 712 | if (ggl_unlikely(count < 3)) |
| 713 | return; |
| 714 | |
| 715 | // vertex cache size must be multiple of 3 |
| 716 | const GLsizei vcs = |
| 717 | ((vertex_cache_t::VERTEX_BUFFER_SIZE + |
| 718 | vertex_cache_t::VERTEX_CACHE_SIZE) / 3) * 3; |
| 719 | do { |
| 720 | vertex_t* v = c->vc.vBuffer; |
| 721 | GLsizei num = count > vcs ? vcs : count; |
| 722 | c->arrays.cull = vertex_t::CLIP_ALL; |
| 723 | c->arrays.compileElements(c, v, first, num); |
| 724 | first += num; |
| 725 | count -= num; |
| 726 | if (!c->arrays.cull) { |
| 727 | // quick/trivial reject of the whole batch |
| 728 | num -= 3; |
| 729 | do { |
| 730 | const uint32_t cc = v[0].flags & v[1].flags & v[2].flags; |
| 731 | if (ggl_likely(!(cc & vertex_t::CLIP_ALL))) |
| 732 | c->prims.renderTriangle(c, v, v+1, v+2); |
| 733 | v += 3; |
| 734 | num -= 3; |
| 735 | } while (num >= 0); |
| 736 | } |
| 737 | } while (count >= 3); |
| 738 | } |
| 739 | |
| 740 | // ---------------------------------------------------------------------------- |
| 741 | #if 0 |
| 742 | #pragma mark - |
| 743 | #endif |
| 744 | |
| 745 | // this looks goofy, but gcc does a great job with this... |
| 746 | static inline unsigned int read_index(int type, const GLvoid*& p) { |
| 747 | unsigned int r; |
| 748 | if (type) { |
| 749 | r = *(const GLubyte*)p; |
| 750 | p = (const GLubyte*)p + 1; |
| 751 | } else { |
| 752 | r = *(const GLushort*)p; |
| 753 | p = (const GLushort*)p + 1; |
| 754 | } |
| 755 | return r; |
| 756 | } |
| 757 | |
| 758 | // ---------------------------------------------------------------------------- |
| 759 | |
| 760 | void drawIndexedPrimitivesPoints(ogles_context_t* c, |
| 761 | GLsizei count, const GLvoid *indices) |
| 762 | { |
| 763 | if (ggl_unlikely(count < 1)) |
| 764 | return; |
| 765 | const int type = (c->arrays.indicesType == GL_UNSIGNED_BYTE); |
| 766 | do { |
| 767 | vertex_t * v = fetch_vertex(c, read_index(type, indices)); |
| 768 | if (ggl_likely(!(v->flags & vertex_t::CLIP_ALL))) |
| 769 | c->prims.renderPoint(c, v); |
| 770 | v->locked = 0; |
| 771 | count--; |
| 772 | } while(count); |
| 773 | } |
| 774 | |
| 775 | // ---------------------------------------------------------------------------- |
| 776 | |
| 777 | void drawIndexedPrimitivesLineStrip(ogles_context_t* c, |
| 778 | GLsizei count, const GLvoid *indices) |
| 779 | { |
| 780 | if (ggl_unlikely(count < 2)) |
| 781 | return; |
| 782 | |
| 783 | vertex_t * const v = c->vc.vBuffer; |
| 784 | vertex_t* v0 = v; |
| 785 | vertex_t* v1; |
| 786 | |
| 787 | const int type = (c->arrays.indicesType == GL_UNSIGNED_BYTE); |
| 788 | c->arrays.compileElement(c, v0, read_index(type, indices)); |
| 789 | count -= 1; |
| 790 | do { |
| 791 | v1 = fetch_vertex(c, read_index(type, indices)); |
| 792 | const uint32_t cc = v0->flags & v1->flags; |
| 793 | if (ggl_likely(!(cc & vertex_t::CLIP_ALL))) |
| 794 | c->prims.renderLine(c, v0, v1); |
| 795 | v0->locked = 0; |
| 796 | v0 = v1; |
| 797 | count--; |
| 798 | } while (count); |
| 799 | v1->locked = 0; |
| 800 | } |
| 801 | |
| 802 | void drawIndexedPrimitivesLineLoop(ogles_context_t* c, |
| 803 | GLsizei count, const GLvoid *indices) |
| 804 | { |
| 805 | if (ggl_unlikely(count <= 2)) { |
| 806 | drawIndexedPrimitivesLines(c, count, indices); |
| 807 | return; |
| 808 | } |
| 809 | |
| 810 | vertex_t * const v = c->vc.vBuffer; |
| 811 | vertex_t* v0 = v; |
| 812 | vertex_t* v1; |
| 813 | |
| 814 | const int type = (c->arrays.indicesType == GL_UNSIGNED_BYTE); |
| 815 | c->arrays.compileElement(c, v0, read_index(type, indices)); |
| 816 | count -= 1; |
| 817 | do { |
| 818 | v1 = fetch_vertex(c, read_index(type, indices)); |
| 819 | const uint32_t cc = v0->flags & v1->flags; |
| 820 | if (ggl_likely(!(cc & vertex_t::CLIP_ALL))) |
| 821 | c->prims.renderLine(c, v0, v1); |
| 822 | v0->locked = 0; |
| 823 | v0 = v1; |
| 824 | count--; |
| 825 | } while (count); |
| 826 | v1->locked = 0; |
| 827 | |
| 828 | v1 = c->vc.vBuffer; |
| 829 | const uint32_t cc = v0->flags & v1->flags; |
| 830 | if (ggl_likely(!(cc & vertex_t::CLIP_ALL))) |
| 831 | c->prims.renderLine(c, v0, v1); |
| 832 | } |
| 833 | |
| 834 | void drawIndexedPrimitivesLines(ogles_context_t* c, |
| 835 | GLsizei count, const GLvoid *indices) |
| 836 | { |
| 837 | if (ggl_unlikely(count < 2)) |
| 838 | return; |
| 839 | |
| 840 | count -= 2; |
| 841 | const int type = (c->arrays.indicesType == GL_UNSIGNED_BYTE); |
| 842 | do { |
| 843 | vertex_t* const v0 = fetch_vertex(c, read_index(type, indices)); |
| 844 | vertex_t* const v1 = fetch_vertex(c, read_index(type, indices)); |
| 845 | const uint32_t cc = v0->flags & v1->flags; |
| 846 | if (ggl_likely(!(cc & vertex_t::CLIP_ALL))) |
| 847 | c->prims.renderLine(c, v0, v1); |
| 848 | v0->locked = 0; |
| 849 | v1->locked = 0; |
| 850 | count -= 2; |
| 851 | } while (count >= 0); |
| 852 | } |
| 853 | |
| 854 | // ---------------------------------------------------------------------------- |
| 855 | |
| 856 | static void drawIndexedPrimitivesTriangleFanOrStrip(ogles_context_t* c, |
| 857 | GLsizei count, const GLvoid *indices, int winding) |
| 858 | { |
| 859 | // winding == 2 : fan |
| 860 | // winding == 1 : strip |
| 861 | |
| 862 | if (ggl_unlikely(count < 3)) |
| 863 | return; |
| 864 | |
| 865 | vertex_t * const v = c->vc.vBuffer; |
| 866 | vertex_t* v0 = v; |
| 867 | vertex_t* v1 = v+1; |
| 868 | vertex_t* v2; |
| 869 | |
| 870 | const int type = (c->arrays.indicesType == GL_UNSIGNED_BYTE); |
| 871 | c->arrays.compileElement(c, v0, read_index(type, indices)); |
| 872 | c->arrays.compileElement(c, v1, read_index(type, indices)); |
| 873 | count -= 2; |
| 874 | |
| 875 | // note: GCC 4.1.1 here makes a prety interesting optimization |
| 876 | // where it duplicates the loop below based on c->arrays.indicesType |
| 877 | |
| 878 | do { |
| 879 | v2 = fetch_vertex(c, read_index(type, indices)); |
| 880 | const uint32_t cc = v0->flags & v1->flags & v2->flags; |
| 881 | if (ggl_likely(!(cc & vertex_t::CLIP_ALL))) |
| 882 | c->prims.renderTriangle(c, v0, v1, v2); |
| 883 | vertex_t* & consumed = ((winding^=1) ? v1 : v0); |
| 884 | consumed->locked = 0; |
| 885 | consumed = v2; |
| 886 | count--; |
| 887 | } while (count); |
| 888 | v0->locked = v1->locked = 0; |
| 889 | v2->locked = 0; |
| 890 | } |
| 891 | |
| 892 | void drawIndexedPrimitivesTriangleStrip(ogles_context_t* c, |
| 893 | GLsizei count, const GLvoid *indices) { |
| 894 | drawIndexedPrimitivesTriangleFanOrStrip(c, count, indices, 1); |
| 895 | } |
| 896 | |
| 897 | void drawIndexedPrimitivesTriangleFan(ogles_context_t* c, |
| 898 | GLsizei count, const GLvoid *indices) { |
| 899 | drawIndexedPrimitivesTriangleFanOrStrip(c, count, indices, 2); |
| 900 | } |
| 901 | |
| 902 | void drawIndexedPrimitivesTriangles(ogles_context_t* c, |
| 903 | GLsizei count, const GLvoid *indices) |
| 904 | { |
| 905 | if (ggl_unlikely(count < 3)) |
| 906 | return; |
| 907 | |
| 908 | count -= 3; |
| 909 | if (ggl_likely(c->arrays.indicesType == GL_UNSIGNED_SHORT)) { |
| 910 | // This case is probably our most common case... |
| 911 | uint16_t const * p = (uint16_t const *)indices; |
| 912 | do { |
| 913 | vertex_t* const v0 = fetch_vertex(c, *p++); |
| 914 | vertex_t* const v1 = fetch_vertex(c, *p++); |
| 915 | vertex_t* const v2 = fetch_vertex(c, *p++); |
| 916 | const uint32_t cc = v0->flags & v1->flags & v2->flags; |
| 917 | if (ggl_likely(!(cc & vertex_t::CLIP_ALL))) |
| 918 | c->prims.renderTriangle(c, v0, v1, v2); |
| 919 | v0->locked = 0; |
| 920 | v1->locked = 0; |
| 921 | v2->locked = 0; |
| 922 | count -= 3; |
| 923 | } while (count >= 0); |
| 924 | } else { |
| 925 | uint8_t const * p = (uint8_t const *)indices; |
| 926 | do { |
| 927 | vertex_t* const v0 = fetch_vertex(c, *p++); |
| 928 | vertex_t* const v1 = fetch_vertex(c, *p++); |
| 929 | vertex_t* const v2 = fetch_vertex(c, *p++); |
| 930 | const uint32_t cc = v0->flags & v1->flags & v2->flags; |
| 931 | if (ggl_likely(!(cc & vertex_t::CLIP_ALL))) |
| 932 | c->prims.renderTriangle(c, v0, v1, v2); |
| 933 | v0->locked = 0; |
| 934 | v1->locked = 0; |
| 935 | v2->locked = 0; |
| 936 | count -= 3; |
| 937 | } while (count >= 0); |
| 938 | } |
| 939 | } |
| 940 | |
| 941 | // ---------------------------------------------------------------------------- |
| 942 | #if 0 |
| 943 | #pragma mark - |
| 944 | #pragma mark Array compilers |
| 945 | #endif |
| 946 | |
| 947 | void compileElement__generic(ogles_context_t* c, |
| 948 | vertex_t* v, GLint first) |
| 949 | { |
| 950 | v->flags = 0; |
| 951 | v->index = first; |
| 952 | first &= vertex_cache_t::INDEX_MASK; |
| 953 | const GLubyte* vp = c->arrays.vertex.element(first); |
Mathias Agopian | cede1ed | 2009-06-02 22:05:04 -0700 | [diff] [blame] | 954 | v->obj.z = 0; |
| 955 | v->obj.w = 0x10000; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 956 | c->arrays.vertex.fetch(c, v->obj.v, vp); |
| 957 | c->arrays.mvp_transform(&c->transforms.mvp, &v->clip, &v->obj); |
| 958 | c->arrays.perspective(c, v); |
| 959 | } |
| 960 | |
| 961 | void compileElements__generic(ogles_context_t* c, |
| 962 | vertex_t* v, GLint first, GLsizei count) |
| 963 | { |
| 964 | const GLubyte* vp = c->arrays.vertex.element( |
| 965 | first & vertex_cache_t::INDEX_MASK); |
| 966 | const size_t stride = c->arrays.vertex.stride; |
| 967 | transform_t const* const mvp = &c->transforms.mvp; |
| 968 | do { |
| 969 | v->flags = 0; |
| 970 | v->index = first++; |
Mathias Agopian | cede1ed | 2009-06-02 22:05:04 -0700 | [diff] [blame] | 971 | v->obj.z = 0; |
| 972 | v->obj.w = 0x10000; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 973 | c->arrays.vertex.fetch(c, v->obj.v, vp); |
| 974 | c->arrays.mvp_transform(mvp, &v->clip, &v->obj); |
| 975 | c->arrays.perspective(c, v); |
| 976 | vp += stride; |
| 977 | v++; |
| 978 | } while (--count); |
| 979 | } |
| 980 | |
| 981 | /* |
| 982 | void compileElements__3x_full(ogles_context_t* c, |
| 983 | vertex_t* v, GLint first, GLsizei count) |
| 984 | { |
| 985 | const GLfixed* vp = (const GLfixed*)c->arrays.vertex.element(first); |
| 986 | const size_t stride = c->arrays.vertex.stride / 4; |
| 987 | // const GLfixed* const& m = c->transforms.mvp.matrix.m; |
| 988 | |
| 989 | GLfixed m[16]; |
| 990 | memcpy(&m, c->transforms.mvp.matrix.m, sizeof(m)); |
| 991 | |
| 992 | do { |
| 993 | const GLfixed rx = vp[0]; |
| 994 | const GLfixed ry = vp[1]; |
| 995 | const GLfixed rz = vp[2]; |
| 996 | vp += stride; |
| 997 | v->index = first++; |
| 998 | v->clip.x = mla3a(rx, m[ 0], ry, m[ 4], rz, m[ 8], m[12]); |
| 999 | v->clip.y = mla3a(rx, m[ 1], ry, m[ 5], rz, m[ 9], m[13]); |
| 1000 | v->clip.z = mla3a(rx, m[ 2], ry, m[ 6], rz, m[10], m[14]); |
| 1001 | v->clip.w = mla3a(rx, m[ 3], ry, m[ 7], rz, m[11], m[15]); |
| 1002 | |
| 1003 | const GLfixed w = v->clip.w; |
| 1004 | uint32_t clip = 0; |
| 1005 | if (v->clip.x < -w) clip |= vertex_t::CLIP_L; |
| 1006 | if (v->clip.x > w) clip |= vertex_t::CLIP_R; |
| 1007 | if (v->clip.y < -w) clip |= vertex_t::CLIP_B; |
| 1008 | if (v->clip.y > w) clip |= vertex_t::CLIP_T; |
| 1009 | if (v->clip.z < -w) clip |= vertex_t::CLIP_N; |
| 1010 | if (v->clip.z > w) clip |= vertex_t::CLIP_F; |
| 1011 | v->flags = clip; |
| 1012 | c->arrays.cull &= clip; |
| 1013 | |
| 1014 | //c->arrays.perspective(c, v); |
| 1015 | v++; |
| 1016 | } while (--count); |
| 1017 | } |
| 1018 | */ |
| 1019 | |
| 1020 | // ---------------------------------------------------------------------------- |
| 1021 | #if 0 |
| 1022 | #pragma mark - |
| 1023 | #pragma mark clippers |
| 1024 | #endif |
| 1025 | |
| 1026 | static void clipVec4(vec4_t& nv, |
| 1027 | GLfixed t, const vec4_t& s, const vec4_t& p) |
| 1028 | { |
| 1029 | for (int i=0; i<4 ; i++) |
| 1030 | nv.v[i] = gglMulAddx(t, s.v[i] - p.v[i], p.v[i], 28); |
| 1031 | } |
| 1032 | |
| 1033 | static void clipVertex(ogles_context_t* c, vertex_t* nv, |
| 1034 | GLfixed t, const vertex_t* s, const vertex_t* p) |
| 1035 | { |
| 1036 | clipVec4(nv->clip, t, s->clip, p->clip); |
| 1037 | nv->fog = gglMulAddx(t, s->fog - p->fog, p->fog, 28); |
| 1038 | ogles_vertex_project(c, nv); |
| 1039 | nv->flags |= vertex_t::LIT | vertex_t::EYE | vertex_t::TT; |
| 1040 | nv->flags &= ~vertex_t::CLIP_ALL; |
| 1041 | } |
| 1042 | |
| 1043 | static void clipVertexC(ogles_context_t* c, vertex_t* nv, |
| 1044 | GLfixed t, const vertex_t* s, const vertex_t* p) |
| 1045 | { |
| 1046 | clipVec4(nv->color, t, s->color, p->color); |
| 1047 | clipVertex(c, nv, t, s, p); |
| 1048 | } |
| 1049 | |
| 1050 | static void clipVertexT(ogles_context_t* c, vertex_t* nv, |
| 1051 | GLfixed t, const vertex_t* s, const vertex_t* p) |
| 1052 | { |
| 1053 | for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; i++) { |
| 1054 | if (c->rasterizer.state.texture[i].enable) |
| 1055 | clipVec4(nv->texture[i], t, s->texture[i], p->texture[i]); |
| 1056 | } |
| 1057 | clipVertex(c, nv, t, s, p); |
| 1058 | } |
| 1059 | |
| 1060 | static void clipVertexAll(ogles_context_t* c, vertex_t* nv, |
| 1061 | GLfixed t, const vertex_t* s, const vertex_t* p) |
| 1062 | { |
| 1063 | clipVec4(nv->color, t, s->color, p->color); |
| 1064 | clipVertexT(c, nv, t, s, p); |
| 1065 | } |
| 1066 | |
| 1067 | static void clipEye(ogles_context_t* c, vertex_t* nv, |
| 1068 | GLfixed t, const vertex_t* s, const vertex_t* p) |
| 1069 | { |
| 1070 | nv->clear(); |
| 1071 | c->arrays.clipVertex(c, nv, t, p, s); |
| 1072 | clipVec4(nv->eye, t, s->eye, p->eye); |
| 1073 | } |
| 1074 | |
| 1075 | // ---------------------------------------------------------------------------- |
| 1076 | #if 0 |
| 1077 | #pragma mark - |
| 1078 | #endif |
| 1079 | |
| 1080 | void validate_arrays(ogles_context_t* c, GLenum mode) |
| 1081 | { |
| 1082 | uint32_t enables = c->rasterizer.state.enables; |
| 1083 | |
| 1084 | // Perspective correction is not need if Ortho transform, but |
| 1085 | // the user can still provide the w coordinate manually, so we can't |
| 1086 | // automatically turn it off (in fact we could when the 4th coordinate |
| 1087 | // is not spcified in the vertex array). |
| 1088 | // W interpolation is never needed for points. |
| 1089 | GLboolean perspective = |
| 1090 | c->perspective && mode!=GL_POINTS && (enables & GGL_ENABLE_TMUS); |
| 1091 | c->rasterizer.procs.enableDisable(c, GGL_W_LERP, perspective); |
| 1092 | |
| 1093 | // set anti-aliasing |
| 1094 | GLboolean smooth = GL_FALSE; |
| 1095 | switch (mode) { |
| 1096 | case GL_POINTS: |
| 1097 | smooth = c->point.smooth; |
| 1098 | break; |
| 1099 | case GL_LINES: |
| 1100 | case GL_LINE_LOOP: |
| 1101 | case GL_LINE_STRIP: |
| 1102 | smooth = c->line.smooth; |
| 1103 | break; |
| 1104 | } |
| 1105 | if (((enables & GGL_ENABLE_AA)?1:0) != smooth) |
| 1106 | c->rasterizer.procs.enableDisable(c, GGL_AA, smooth); |
| 1107 | |
| 1108 | // set the shade model for this primitive |
| 1109 | c->rasterizer.procs.shadeModel(c, |
| 1110 | (mode == GL_POINTS) ? GL_FLAT : c->lighting.shadeModel); |
| 1111 | |
| 1112 | // compute all the matrices we'll need... |
| 1113 | uint32_t want = |
| 1114 | transform_state_t::MVP | |
| 1115 | transform_state_t::VIEWPORT; |
| 1116 | if (c->lighting.enable) { // needs normal transforms and eye coords |
| 1117 | want |= transform_state_t::MVUI; |
| 1118 | want |= transform_state_t::MODELVIEW; |
| 1119 | } |
| 1120 | if (enables & GGL_ENABLE_TMUS) { // needs texture transforms |
| 1121 | want |= transform_state_t::TEXTURE; |
| 1122 | } |
| 1123 | if (c->clipPlanes.enable || (enables & GGL_ENABLE_FOG)) { |
| 1124 | want |= transform_state_t::MODELVIEW; // needs eye coords |
| 1125 | } |
| 1126 | ogles_validate_transform(c, want); |
| 1127 | |
| 1128 | // textures... |
| 1129 | if (enables & GGL_ENABLE_TMUS) |
| 1130 | ogles_validate_texture(c); |
| 1131 | |
| 1132 | // vertex compilers |
| 1133 | c->arrays.compileElement = compileElement__generic; |
| 1134 | c->arrays.compileElements = compileElements__generic; |
| 1135 | |
| 1136 | // vertex transform |
| 1137 | c->arrays.mvp_transform = |
| 1138 | c->transforms.mvp.pointv[c->arrays.vertex.size - 2]; |
| 1139 | |
| 1140 | c->arrays.mv_transform = |
| 1141 | c->transforms.modelview.transform.pointv[c->arrays.vertex.size - 2]; |
| 1142 | |
| 1143 | /* |
| 1144 | * *********************************************************************** |
| 1145 | * pick fetchers |
| 1146 | * *********************************************************************** |
| 1147 | */ |
| 1148 | |
| 1149 | array_machine_t& am = c->arrays; |
| 1150 | am.vertex.fetch = fetchNop; |
| 1151 | am.normal.fetch = currentNormal; |
| 1152 | am.color.fetch = currentColor; |
| 1153 | |
| 1154 | if (am.vertex.enable) { |
| 1155 | am.vertex.resolve(); |
| 1156 | if (am.vertex.bo || am.vertex.pointer) { |
| 1157 | am.vertex.fetch = vertex_fct[am.vertex.size-2][am.vertex.type & 0xF]; |
| 1158 | } |
| 1159 | } |
| 1160 | |
| 1161 | if (am.normal.enable) { |
| 1162 | am.normal.resolve(); |
| 1163 | if (am.normal.bo || am.normal.pointer) { |
| 1164 | am.normal.fetch = normal_fct[am.normal.size-3][am.normal.type & 0xF]; |
| 1165 | } |
| 1166 | } |
| 1167 | |
| 1168 | if (am.color.enable) { |
| 1169 | am.color.resolve(); |
| 1170 | if (c->lighting.enable) { |
| 1171 | if (am.color.bo || am.color.pointer) { |
| 1172 | am.color.fetch = color_fct[am.color.size-3][am.color.type & 0xF]; |
| 1173 | } |
| 1174 | } else { |
| 1175 | if (am.color.bo || am.color.pointer) { |
| 1176 | am.color.fetch = color_clamp_fct[am.color.size-3][am.color.type & 0xF]; |
| 1177 | } |
| 1178 | } |
| 1179 | } |
| 1180 | |
| 1181 | int activeTmuCount = 0; |
| 1182 | for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; i++) { |
| 1183 | am.texture[i].fetch = currentTexCoord; |
| 1184 | if (c->rasterizer.state.texture[i].enable) { |
| 1185 | |
| 1186 | // texture fetchers... |
| 1187 | if (am.texture[i].enable) { |
| 1188 | am.texture[i].resolve(); |
| 1189 | if (am.texture[i].bo || am.texture[i].pointer) { |
| 1190 | am.texture[i].fetch = texture_fct[am.texture[i].size-2][am.texture[i].type & 0xF]; |
| 1191 | } |
| 1192 | } |
| 1193 | |
| 1194 | // texture transform... |
| 1195 | const int index = c->arrays.texture[i].size - 2; |
| 1196 | c->arrays.tex_transform[i] = |
| 1197 | c->transforms.texture[i].transform.pointv[index]; |
| 1198 | |
| 1199 | am.tmu = i; |
| 1200 | activeTmuCount++; |
| 1201 | } |
| 1202 | } |
| 1203 | |
| 1204 | // pick the vertex-clipper |
| 1205 | uint32_t clipper = 0; |
| 1206 | // we must reload 'enables' here |
| 1207 | enables = c->rasterizer.state.enables; |
| 1208 | if (enables & GGL_ENABLE_SMOOTH) |
| 1209 | clipper |= 1; // we need to interpolate colors |
| 1210 | if (enables & GGL_ENABLE_TMUS) |
| 1211 | clipper |= 2; // we need to interpolate textures |
| 1212 | switch (clipper) { |
| 1213 | case 0: c->arrays.clipVertex = clipVertex; break; |
| 1214 | case 1: c->arrays.clipVertex = clipVertexC; break; |
| 1215 | case 2: c->arrays.clipVertex = clipVertexT; break; |
| 1216 | case 3: c->arrays.clipVertex = clipVertexAll; break; |
| 1217 | } |
| 1218 | c->arrays.clipEye = clipEye; |
| 1219 | |
| 1220 | // pick the primitive rasterizer |
| 1221 | ogles_validate_primitives(c); |
| 1222 | } |
| 1223 | |
| 1224 | // ---------------------------------------------------------------------------- |
| 1225 | }; // namespace android |
| 1226 | // ---------------------------------------------------------------------------- |
| 1227 | |
| 1228 | using namespace android; |
| 1229 | |
| 1230 | #if 0 |
| 1231 | #pragma mark - |
| 1232 | #pragma mark array API |
| 1233 | #endif |
| 1234 | |
| 1235 | void glVertexPointer( |
| 1236 | GLint size, GLenum type, GLsizei stride, const GLvoid *pointer) |
| 1237 | { |
| 1238 | ogles_context_t* c = ogles_context_t::get(); |
| 1239 | if (size<2 || size>4 || stride<0) { |
| 1240 | ogles_error(c, GL_INVALID_VALUE); |
| 1241 | return; |
| 1242 | } |
| 1243 | switch (type) { |
| 1244 | case GL_BYTE: |
| 1245 | case GL_SHORT: |
| 1246 | case GL_FIXED: |
| 1247 | case GL_FLOAT: |
| 1248 | break; |
| 1249 | default: |
| 1250 | ogles_error(c, GL_INVALID_ENUM); |
| 1251 | return; |
| 1252 | } |
| 1253 | c->arrays.vertex.init(size, type, stride, pointer, c->arrays.array_buffer, 0); |
| 1254 | } |
| 1255 | |
| 1256 | void glColorPointer( |
| 1257 | GLint size, GLenum type, GLsizei stride, const GLvoid *pointer) |
| 1258 | { |
| 1259 | ogles_context_t* c = ogles_context_t::get(); |
| 1260 | // in theory ogles doesn't allow color arrays of size 3 |
| 1261 | // but it is very useful to 'visualize' the normal array. |
| 1262 | if (size<3 || size>4 || stride<0) { |
| 1263 | ogles_error(c, GL_INVALID_VALUE); |
| 1264 | return; |
| 1265 | } |
| 1266 | switch (type) { |
| 1267 | case GL_UNSIGNED_BYTE: |
| 1268 | case GL_FIXED: |
| 1269 | case GL_FLOAT: |
| 1270 | break; |
| 1271 | default: |
| 1272 | ogles_error(c, GL_INVALID_ENUM); |
| 1273 | return; |
| 1274 | } |
| 1275 | c->arrays.color.init(size, type, stride, pointer, c->arrays.array_buffer, 0); |
| 1276 | } |
| 1277 | |
| 1278 | void glNormalPointer( |
| 1279 | GLenum type, GLsizei stride, const GLvoid *pointer) |
| 1280 | { |
| 1281 | ogles_context_t* c = ogles_context_t::get(); |
| 1282 | if (stride<0) { |
| 1283 | ogles_error(c, GL_INVALID_VALUE); |
| 1284 | return; |
| 1285 | } |
| 1286 | switch (type) { |
| 1287 | case GL_BYTE: |
| 1288 | case GL_SHORT: |
| 1289 | case GL_FIXED: |
| 1290 | case GL_FLOAT: |
| 1291 | break; |
| 1292 | default: |
| 1293 | ogles_error(c, GL_INVALID_ENUM); |
| 1294 | return; |
| 1295 | } |
| 1296 | c->arrays.normal.init(3, type, stride, pointer, c->arrays.array_buffer, 0); |
| 1297 | } |
| 1298 | |
| 1299 | void glTexCoordPointer( |
| 1300 | GLint size, GLenum type, GLsizei stride, const GLvoid *pointer) |
| 1301 | { |
| 1302 | ogles_context_t* c = ogles_context_t::get(); |
| 1303 | if (size<2 || size>4 || stride<0) { |
| 1304 | ogles_error(c, GL_INVALID_VALUE); |
| 1305 | return; |
| 1306 | } |
| 1307 | switch (type) { |
| 1308 | case GL_BYTE: |
| 1309 | case GL_SHORT: |
| 1310 | case GL_FIXED: |
| 1311 | case GL_FLOAT: |
| 1312 | break; |
| 1313 | default: |
| 1314 | ogles_error(c, GL_INVALID_ENUM); |
| 1315 | return; |
| 1316 | } |
| 1317 | const int tmu = c->arrays.activeTexture; |
| 1318 | c->arrays.texture[tmu].init(size, type, stride, pointer, |
| 1319 | c->arrays.array_buffer, 0); |
| 1320 | } |
| 1321 | |
| 1322 | |
| 1323 | void glEnableClientState(GLenum array) { |
| 1324 | ogles_context_t* c = ogles_context_t::get(); |
| 1325 | enableDisableClientState(c, array, true); |
| 1326 | } |
| 1327 | |
| 1328 | void glDisableClientState(GLenum array) { |
| 1329 | ogles_context_t* c = ogles_context_t::get(); |
| 1330 | enableDisableClientState(c, array, false); |
| 1331 | } |
| 1332 | |
| 1333 | void glClientActiveTexture(GLenum texture) |
| 1334 | { |
| 1335 | ogles_context_t* c = ogles_context_t::get(); |
| 1336 | if (texture<GL_TEXTURE0 || texture>=GL_TEXTURE0+GGL_TEXTURE_UNIT_COUNT) { |
| 1337 | ogles_error(c, GL_INVALID_ENUM); |
| 1338 | return; |
| 1339 | } |
| 1340 | c->arrays.activeTexture = texture - GL_TEXTURE0; |
| 1341 | } |
| 1342 | |
| 1343 | void glDrawArrays(GLenum mode, GLint first, GLsizei count) |
| 1344 | { |
| 1345 | ogles_context_t* c = ogles_context_t::get(); |
| 1346 | if (count<0) { |
| 1347 | ogles_error(c, GL_INVALID_VALUE); |
| 1348 | return; |
| 1349 | } |
| 1350 | switch (mode) { |
| 1351 | case GL_POINTS: |
| 1352 | case GL_LINE_STRIP: |
| 1353 | case GL_LINE_LOOP: |
| 1354 | case GL_LINES: |
| 1355 | case GL_TRIANGLE_STRIP: |
| 1356 | case GL_TRIANGLE_FAN: |
| 1357 | case GL_TRIANGLES: |
| 1358 | break; |
| 1359 | default: |
| 1360 | ogles_error(c, GL_INVALID_ENUM); |
| 1361 | return; |
| 1362 | } |
| 1363 | |
| 1364 | if (count == 0 || !c->arrays.vertex.enable) |
| 1365 | return; |
| 1366 | if ((c->cull.enable) && (c->cull.cullFace == GL_FRONT_AND_BACK)) |
| 1367 | return; // all triangles are culled |
| 1368 | |
| 1369 | validate_arrays(c, mode); |
| 1370 | drawArraysPrims[mode](c, first, count); |
| 1371 | |
| 1372 | #if VC_CACHE_STATISTICS |
| 1373 | c->vc.total = count; |
| 1374 | c->vc.dump_stats(mode); |
| 1375 | #endif |
| 1376 | } |
| 1377 | |
| 1378 | void glDrawElements( |
| 1379 | GLenum mode, GLsizei count, GLenum type, const GLvoid *indices) |
| 1380 | { |
| 1381 | ogles_context_t* c = ogles_context_t::get(); |
| 1382 | if (count<0) { |
| 1383 | ogles_error(c, GL_INVALID_VALUE); |
| 1384 | return; |
| 1385 | } |
| 1386 | switch (mode) { |
| 1387 | case GL_POINTS: |
| 1388 | case GL_LINE_STRIP: |
| 1389 | case GL_LINE_LOOP: |
| 1390 | case GL_LINES: |
| 1391 | case GL_TRIANGLE_STRIP: |
| 1392 | case GL_TRIANGLE_FAN: |
| 1393 | case GL_TRIANGLES: |
| 1394 | break; |
| 1395 | default: |
| 1396 | ogles_error(c, GL_INVALID_ENUM); |
| 1397 | return; |
| 1398 | } |
| 1399 | switch (type) { |
| 1400 | case GL_UNSIGNED_BYTE: |
| 1401 | case GL_UNSIGNED_SHORT: |
| 1402 | c->arrays.indicesType = type; |
| 1403 | break; |
| 1404 | default: |
| 1405 | ogles_error(c, GL_INVALID_ENUM); |
| 1406 | return; |
| 1407 | } |
| 1408 | if (count == 0 || !c->arrays.vertex.enable) |
| 1409 | return; |
| 1410 | if ((c->cull.enable) && (c->cull.cullFace == GL_FRONT_AND_BACK)) |
| 1411 | return; // all triangles are culled |
| 1412 | |
| 1413 | // clear the vertex-cache |
| 1414 | c->vc.clear(); |
| 1415 | validate_arrays(c, mode); |
| 1416 | |
| 1417 | // if indices are in a buffer object, the pointer is treated as an |
| 1418 | // offset in that buffer. |
| 1419 | if (c->arrays.element_array_buffer) { |
| 1420 | indices = c->arrays.element_array_buffer->data + uintptr_t(indices); |
| 1421 | } |
| 1422 | |
| 1423 | drawElementsPrims[mode](c, count, indices); |
| 1424 | |
| 1425 | #if VC_CACHE_STATISTICS |
| 1426 | c->vc.total = count; |
| 1427 | c->vc.dump_stats(mode); |
| 1428 | #endif |
| 1429 | } |
| 1430 | |
| 1431 | // ---------------------------------------------------------------------------- |
| 1432 | // buffers |
| 1433 | // ---------------------------------------------------------------------------- |
| 1434 | |
| 1435 | void glBindBuffer(GLenum target, GLuint buffer) |
| 1436 | { |
| 1437 | ogles_context_t* c = ogles_context_t::get(); |
| 1438 | if ((target!=GL_ARRAY_BUFFER) && (target!=GL_ELEMENT_ARRAY_BUFFER)) { |
| 1439 | ogles_error(c, GL_INVALID_ENUM); |
| 1440 | return; |
| 1441 | } |
| 1442 | // create a buffer object, or bind an existing one |
| 1443 | buffer_t const* bo = 0; |
| 1444 | if (buffer) { |
| 1445 | bo = c->bufferObjectManager->bind(buffer); |
| 1446 | if (!bo) { |
| 1447 | ogles_error(c, GL_OUT_OF_MEMORY); |
| 1448 | return; |
| 1449 | } |
| 1450 | } |
| 1451 | ((target == GL_ARRAY_BUFFER) ? |
| 1452 | c->arrays.array_buffer : c->arrays.element_array_buffer) = bo; |
| 1453 | } |
| 1454 | |
| 1455 | void glBufferData(GLenum target, GLsizeiptr size, const GLvoid* data, GLenum usage) |
| 1456 | { |
| 1457 | ogles_context_t* c = ogles_context_t::get(); |
| 1458 | if ((target!=GL_ARRAY_BUFFER) && (target!=GL_ELEMENT_ARRAY_BUFFER)) { |
| 1459 | ogles_error(c, GL_INVALID_ENUM); |
| 1460 | return; |
| 1461 | } |
| 1462 | if (size<0) { |
| 1463 | ogles_error(c, GL_INVALID_VALUE); |
| 1464 | return; |
| 1465 | } |
| 1466 | if ((usage!=GL_STATIC_DRAW) && (usage!=GL_DYNAMIC_DRAW)) { |
| 1467 | ogles_error(c, GL_INVALID_ENUM); |
| 1468 | return; |
| 1469 | } |
| 1470 | buffer_t const* bo = ((target == GL_ARRAY_BUFFER) ? |
| 1471 | c->arrays.array_buffer : c->arrays.element_array_buffer); |
| 1472 | |
| 1473 | if (bo == 0) { |
| 1474 | // can't modify buffer 0 |
| 1475 | ogles_error(c, GL_INVALID_OPERATION); |
| 1476 | return; |
| 1477 | } |
| 1478 | |
| 1479 | buffer_t* edit_bo = const_cast<buffer_t*>(bo); |
| 1480 | if (c->bufferObjectManager->allocateStore(edit_bo, size, usage) != 0) { |
| 1481 | ogles_error(c, GL_OUT_OF_MEMORY); |
| 1482 | return; |
| 1483 | } |
| 1484 | if (data) { |
| 1485 | memcpy(bo->data, data, size); |
| 1486 | } |
| 1487 | } |
| 1488 | |
| 1489 | void glBufferSubData(GLenum target, GLintptr offset, GLsizeiptr size, const GLvoid* data) |
| 1490 | { |
| 1491 | ogles_context_t* c = ogles_context_t::get(); |
| 1492 | if ((target!=GL_ARRAY_BUFFER) && (target!=GL_ELEMENT_ARRAY_BUFFER)) { |
| 1493 | ogles_error(c, GL_INVALID_ENUM); |
| 1494 | return; |
| 1495 | } |
| 1496 | if (offset<0 || size<0 || data==0) { |
| 1497 | ogles_error(c, GL_INVALID_VALUE); |
| 1498 | return; |
| 1499 | } |
| 1500 | buffer_t const* bo = ((target == GL_ARRAY_BUFFER) ? |
| 1501 | c->arrays.array_buffer : c->arrays.element_array_buffer); |
| 1502 | |
| 1503 | if (bo == 0) { |
| 1504 | // can't modify buffer 0 |
| 1505 | ogles_error(c, GL_INVALID_OPERATION); |
| 1506 | return; |
| 1507 | } |
| 1508 | if (offset+size > bo->size) { |
| 1509 | ogles_error(c, GL_INVALID_VALUE); |
| 1510 | return; |
| 1511 | } |
| 1512 | memcpy(bo->data + offset, data, size); |
| 1513 | } |
| 1514 | |
| 1515 | void glDeleteBuffers(GLsizei n, const GLuint* buffers) |
| 1516 | { |
| 1517 | ogles_context_t* c = ogles_context_t::get(); |
| 1518 | if (n<0) { |
| 1519 | ogles_error(c, GL_INVALID_VALUE); |
| 1520 | return; |
| 1521 | } |
| 1522 | |
| 1523 | for (int i=0 ; i<n ; i++) { |
| 1524 | GLuint name = buffers[i]; |
| 1525 | if (name) { |
| 1526 | // unbind bound deleted buffers... |
| 1527 | if (c->arrays.element_array_buffer->name == name) { |
| 1528 | c->arrays.element_array_buffer = 0; |
| 1529 | } |
| 1530 | if (c->arrays.array_buffer->name == name) { |
| 1531 | c->arrays.array_buffer = 0; |
| 1532 | } |
| 1533 | if (c->arrays.vertex.bo->name == name) { |
| 1534 | c->arrays.vertex.bo = 0; |
| 1535 | } |
| 1536 | if (c->arrays.normal.bo->name == name) { |
| 1537 | c->arrays.normal.bo = 0; |
| 1538 | } |
| 1539 | if (c->arrays.color.bo->name == name) { |
| 1540 | c->arrays.color.bo = 0; |
| 1541 | } |
| 1542 | for (int t=0 ; t<GGL_TEXTURE_UNIT_COUNT ; t++) { |
| 1543 | if (c->arrays.texture[t].bo->name == name) { |
| 1544 | c->arrays.texture[t].bo = 0; |
| 1545 | } |
| 1546 | } |
| 1547 | } |
| 1548 | } |
| 1549 | c->bufferObjectManager->deleteBuffers(n, buffers); |
| 1550 | c->bufferObjectManager->recycleTokens(n, buffers); |
| 1551 | } |
| 1552 | |
| 1553 | void glGenBuffers(GLsizei n, GLuint* buffers) |
| 1554 | { |
| 1555 | ogles_context_t* c = ogles_context_t::get(); |
| 1556 | if (n<0) { |
| 1557 | ogles_error(c, GL_INVALID_VALUE); |
| 1558 | return; |
| 1559 | } |
| 1560 | c->bufferObjectManager->getToken(n, buffers); |
| 1561 | } |