r300_screen.c revision 171be755223d99f8cc5cc1bdaf8bd7b4caa04b4f
1/* 2 * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com> 3 * Copyright 2010 Marek Olšák <maraeo@gmail.com> 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * on the rights to use, copy, modify, merge, publish, distribute, sub 9 * license, and/or sell copies of the Software, and to permit persons to whom 10 * the Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice (including the next 13 * paragraph) shall be included in all copies or substantial portions of the 14 * Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, 20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 22 * USE OR OTHER DEALINGS IN THE SOFTWARE. */ 23 24#include "util/u_format.h" 25#include "util/u_format_s3tc.h" 26#include "util/u_memory.h" 27#include "os/os_time.h" 28#include "vl/vl_decoder.h" 29#include "vl/vl_video_buffer.h" 30 31#include "r300_context.h" 32#include "r300_texture.h" 33#include "r300_screen_buffer.h" 34#include "r300_state_inlines.h" 35#include "r300_public.h" 36 37#include "draw/draw_context.h" 38 39/* Return the identifier behind whom the brave coders responsible for this 40 * amalgamation of code, sweat, and duct tape, routinely obscure their names. 41 * 42 * ...I should have just put "Corbin Simpson", but I'm not that cool. 43 * 44 * (Or egotistical. Yet.) */ 45static const char* r300_get_vendor(struct pipe_screen* pscreen) 46{ 47 return "X.Org R300 Project"; 48} 49 50static const char* chip_families[] = { 51 "ATI R300", 52 "ATI R350", 53 "ATI RV350", 54 "ATI RV370", 55 "ATI RV380", 56 "ATI RS400", 57 "ATI RC410", 58 "ATI RS480", 59 "ATI R420", 60 "ATI R423", 61 "ATI R430", 62 "ATI R480", 63 "ATI R481", 64 "ATI RV410", 65 "ATI RS600", 66 "ATI RS690", 67 "ATI RS740", 68 "ATI RV515", 69 "ATI R520", 70 "ATI RV530", 71 "ATI R580", 72 "ATI RV560", 73 "ATI RV570" 74}; 75 76static const char* r300_get_name(struct pipe_screen* pscreen) 77{ 78 struct r300_screen* r300screen = r300_screen(pscreen); 79 80 return chip_families[r300screen->caps.family]; 81} 82 83static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param) 84{ 85 struct r300_screen* r300screen = r300_screen(pscreen); 86 boolean is_r500 = r300screen->caps.is_r500; 87 88 switch (param) { 89 /* Supported features (boolean caps). */ 90 case PIPE_CAP_NPOT_TEXTURES: 91 case PIPE_CAP_TWO_SIDED_STENCIL: 92 case PIPE_CAP_ANISOTROPIC_FILTER: 93 case PIPE_CAP_POINT_SPRITE: 94 case PIPE_CAP_OCCLUSION_QUERY: 95 case PIPE_CAP_TEXTURE_SHADOW_MAP: 96 case PIPE_CAP_TEXTURE_MIRROR_CLAMP: 97 case PIPE_CAP_BLEND_EQUATION_SEPARATE: 98 case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR: 99 case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT: 100 case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER: 101 case PIPE_CAP_CONDITIONAL_RENDER: 102 case PIPE_CAP_TEXTURE_BARRIER: 103 case PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS: 104 case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS: 105 case PIPE_CAP_VERTEX_COLOR_CLAMPED: 106 return 1; 107 108 case PIPE_CAP_GLSL_FEATURE_LEVEL: 109 return 120; 110 111 /* r300 cannot do swizzling of compressed textures. Supported otherwise. */ 112 case PIPE_CAP_TEXTURE_SWIZZLE: 113 return util_format_s3tc_enabled ? r300screen->caps.dxtc_swizzle : 1; 114 115 /* Supported on r500 only. */ 116 case PIPE_CAP_VERTEX_COLOR_UNCLAMPED: 117 case PIPE_CAP_MIXED_COLORBUFFER_FORMATS: 118 case PIPE_CAP_SM3: 119 return is_r500 ? 1 : 0; 120 121 /* Unsupported features. */ 122 case PIPE_CAP_TIMER_QUERY: 123 case PIPE_CAP_DUAL_SOURCE_BLEND: 124 case PIPE_CAP_INDEP_BLEND_ENABLE: 125 case PIPE_CAP_INDEP_BLEND_FUNC: 126 case PIPE_CAP_DEPTH_CLIP_DISABLE: 127 case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE: 128 case PIPE_CAP_SHADER_STENCIL_EXPORT: 129 case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS: 130 case PIPE_CAP_TGSI_INSTANCEID: 131 case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT: 132 case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER: 133 case PIPE_CAP_SEAMLESS_CUBE_MAP: 134 case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE: 135 case PIPE_CAP_SCALED_RESOLVE: 136 case PIPE_CAP_MIN_TEXEL_OFFSET: 137 case PIPE_CAP_MAX_TEXEL_OFFSET: 138 case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS: 139 case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS: 140 case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS: 141 case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME: 142 case PIPE_CAP_FRAGMENT_COLOR_CLAMPED: 143 return 0; 144 145 /* SWTCL-only features. */ 146 case PIPE_CAP_PRIMITIVE_RESTART: 147 return !r300screen->caps.has_tcl; 148 149 /* Texturing. */ 150 case PIPE_CAP_MAX_COMBINED_SAMPLERS: 151 return r300screen->caps.num_tex_units; 152 case PIPE_CAP_MAX_TEXTURE_2D_LEVELS: 153 case PIPE_CAP_MAX_TEXTURE_3D_LEVELS: 154 case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS: 155 /* 13 == 4096, 12 == 2048 */ 156 return is_r500 ? 13 : 12; 157 158 /* Render targets. */ 159 case PIPE_CAP_MAX_RENDER_TARGETS: 160 return 4; 161 } 162 return 0; 163} 164 165static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param) 166{ 167 struct r300_screen* r300screen = r300_screen(pscreen); 168 boolean is_r400 = r300screen->caps.is_r400; 169 boolean is_r500 = r300screen->caps.is_r500; 170 171 switch (shader) { 172 case PIPE_SHADER_FRAGMENT: 173 switch (param) 174 { 175 case PIPE_SHADER_CAP_MAX_INSTRUCTIONS: 176 return is_r500 || is_r400 ? 512 : 96; 177 case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS: 178 return is_r500 || is_r400 ? 512 : 64; 179 case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS: 180 return is_r500 || is_r400 ? 512 : 32; 181 case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS: 182 return is_r500 ? 511 : 4; 183 case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH: 184 return is_r500 ? 64 : 0; /* Actually unlimited on r500. */ 185 /* Fragment shader limits. */ 186 case PIPE_SHADER_CAP_MAX_INPUTS: 187 /* 2 colors + 8 texcoords are always supported 188 * (minus fog and wpos). 189 * 190 * R500 has the ability to turn 3rd and 4th color into 191 * additional texcoords but there is no two-sided color 192 * selection then. However the facing bit can be used instead. */ 193 return 10; 194 case PIPE_SHADER_CAP_MAX_CONSTS: 195 return is_r500 ? 256 : 32; 196 case PIPE_SHADER_CAP_MAX_CONST_BUFFERS: 197 return 1; 198 case PIPE_SHADER_CAP_MAX_TEMPS: 199 return is_r500 ? 128 : is_r400 ? 64 : 32; 200 case PIPE_SHADER_CAP_MAX_PREDS: 201 return is_r500 ? 1 : 0; 202 case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS: 203 return r300screen->caps.num_tex_units; 204 case PIPE_SHADER_CAP_MAX_ADDRS: 205 case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED: 206 case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR: 207 case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR: 208 case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR: 209 case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR: 210 case PIPE_SHADER_CAP_SUBROUTINES: 211 case PIPE_SHADER_CAP_INTEGERS: 212 case PIPE_SHADER_CAP_OUTPUT_READ: 213 return 0; 214 } 215 break; 216 case PIPE_SHADER_VERTEX: 217 switch (param) 218 { 219 case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS: 220 return 0; 221 default:; 222 } 223 224 if (!r300screen->caps.has_tcl) { 225 return draw_get_shader_param(shader, param); 226 } 227 228 switch (param) 229 { 230 case PIPE_SHADER_CAP_MAX_INSTRUCTIONS: 231 case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS: 232 return is_r500 ? 1024 : 256; 233 case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH: 234 return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */ 235 case PIPE_SHADER_CAP_MAX_INPUTS: 236 return 16; 237 case PIPE_SHADER_CAP_MAX_CONSTS: 238 return 256; 239 case PIPE_SHADER_CAP_MAX_CONST_BUFFERS: 240 return 1; 241 case PIPE_SHADER_CAP_MAX_TEMPS: 242 return 32; 243 case PIPE_SHADER_CAP_MAX_ADDRS: 244 return 1; /* XXX guessed */ 245 case PIPE_SHADER_CAP_MAX_PREDS: 246 return is_r500 ? 4 : 0; /* XXX guessed. */ 247 case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR: 248 return 1; 249 case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS: 250 case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS: 251 case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED: 252 case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR: 253 case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR: 254 case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR: 255 case PIPE_SHADER_CAP_SUBROUTINES: 256 case PIPE_SHADER_CAP_INTEGERS: 257 case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS: 258 case PIPE_SHADER_CAP_OUTPUT_READ: 259 return 0; 260 } 261 break; 262 } 263 return 0; 264} 265 266static float r300_get_paramf(struct pipe_screen* pscreen, 267 enum pipe_capf param) 268{ 269 struct r300_screen* r300screen = r300_screen(pscreen); 270 271 switch (param) { 272 case PIPE_CAPF_MAX_LINE_WIDTH: 273 case PIPE_CAPF_MAX_LINE_WIDTH_AA: 274 case PIPE_CAPF_MAX_POINT_WIDTH: 275 case PIPE_CAPF_MAX_POINT_WIDTH_AA: 276 /* The maximum dimensions of the colorbuffer are our practical 277 * rendering limits. 2048 pixels should be enough for anybody. */ 278 if (r300screen->caps.is_r500) { 279 return 4096.0f; 280 } else if (r300screen->caps.is_r400) { 281 return 4021.0f; 282 } else { 283 return 2560.0f; 284 } 285 case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY: 286 return 16.0f; 287 case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS: 288 return 16.0f; 289 case PIPE_CAPF_GUARD_BAND_LEFT: 290 case PIPE_CAPF_GUARD_BAND_TOP: 291 case PIPE_CAPF_GUARD_BAND_RIGHT: 292 case PIPE_CAPF_GUARD_BAND_BOTTOM: 293 /* XXX I don't know what these should be but the least we can do is 294 * silence the potential error message */ 295 return 0.0f; 296 default: 297 debug_printf("r300: Warning: Unknown CAP %d in get_paramf.\n", 298 param); 299 return 0.0f; 300 } 301} 302 303static int r300_get_video_param(struct pipe_screen *screen, 304 enum pipe_video_profile profile, 305 enum pipe_video_cap param) 306{ 307 switch (param) { 308 case PIPE_VIDEO_CAP_SUPPORTED: 309 return vl_profile_supported(screen, profile); 310 case PIPE_VIDEO_CAP_NPOT_TEXTURES: 311 return 0; 312 case PIPE_VIDEO_CAP_MAX_WIDTH: 313 case PIPE_VIDEO_CAP_MAX_HEIGHT: 314 return vl_video_buffer_max_size(screen); 315 case PIPE_VIDEO_CAP_PREFERED_FORMAT: 316 return PIPE_FORMAT_NV12; 317 default: 318 return 0; 319 } 320} 321 322static boolean r300_is_format_supported(struct pipe_screen* screen, 323 enum pipe_format format, 324 enum pipe_texture_target target, 325 unsigned sample_count, 326 unsigned usage) 327{ 328 uint32_t retval = 0; 329 boolean drm_2_8_0 = r300_screen(screen)->info.drm_minor >= 8; 330 boolean is_r500 = r300_screen(screen)->caps.is_r500; 331 boolean is_r400 = r300_screen(screen)->caps.is_r400; 332 boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM || 333 format == PIPE_FORMAT_R10G10B10X2_SNORM || 334 format == PIPE_FORMAT_B10G10R10A2_UNORM || 335 format == PIPE_FORMAT_R10SG10SB10SA2U_NORM; 336 boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM || 337 format == PIPE_FORMAT_RGTC1_SNORM || 338 format == PIPE_FORMAT_LATC1_UNORM || 339 format == PIPE_FORMAT_LATC1_SNORM; 340 boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM || 341 format == PIPE_FORMAT_RGTC2_SNORM || 342 format == PIPE_FORMAT_LATC2_UNORM || 343 format == PIPE_FORMAT_LATC2_SNORM; 344 boolean is_x16f_xy16f = format == PIPE_FORMAT_R16_FLOAT || 345 format == PIPE_FORMAT_R16G16_FLOAT || 346 format == PIPE_FORMAT_A16_FLOAT || 347 format == PIPE_FORMAT_L16_FLOAT || 348 format == PIPE_FORMAT_L16A16_FLOAT || 349 format == PIPE_FORMAT_I16_FLOAT; 350 boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT || 351 format == PIPE_FORMAT_R16G16_FLOAT || 352 format == PIPE_FORMAT_R16G16B16_FLOAT || 353 format == PIPE_FORMAT_R16G16B16A16_FLOAT; 354 boolean is_fixed = format == PIPE_FORMAT_R32_FIXED || 355 format == PIPE_FORMAT_R32G32_FIXED || 356 format == PIPE_FORMAT_R32G32B32_FIXED || 357 format == PIPE_FORMAT_R32G32B32A32_FIXED; 358 359 if (!util_format_is_supported(format, usage)) 360 return FALSE; 361 362 /* Check multisampling support. */ 363 switch (sample_count) { 364 case 0: 365 case 1: 366 break; 367 case 2: 368 case 3: 369 case 4: 370 case 6: 371 return FALSE; 372#if 0 373 if (usage != PIPE_BIND_RENDER_TARGET || 374 !util_format_is_rgba8_variant( 375 util_format_description(format))) { 376 return FALSE; 377 } 378#endif 379 break; 380 default: 381 return FALSE; 382 } 383 384 /* Check sampler format support. */ 385 if ((usage & PIPE_BIND_SAMPLER_VIEW) && 386 /* ATI1N is r5xx-only. */ 387 (is_r500 || !is_ati1n) && 388 /* ATI2N is supported on r4xx-r5xx. */ 389 (is_r400 || is_r500 || !is_ati2n) && 390 /* R16F and RG16F texture support was added in as late as DRM 2.8.0 */ 391 (drm_2_8_0 || !is_x16f_xy16f) && 392 r300_is_sampler_format_supported(format)) { 393 retval |= PIPE_BIND_SAMPLER_VIEW; 394 } 395 396 /* Check colorbuffer format support. */ 397 if ((usage & (PIPE_BIND_RENDER_TARGET | 398 PIPE_BIND_DISPLAY_TARGET | 399 PIPE_BIND_SCANOUT | 400 PIPE_BIND_SHARED)) && 401 /* 2101010 cannot be rendered to on non-r5xx. */ 402 (!is_color2101010 || (is_r500 && drm_2_8_0)) && 403 r300_is_colorbuffer_format_supported(format)) { 404 retval |= usage & 405 (PIPE_BIND_RENDER_TARGET | 406 PIPE_BIND_DISPLAY_TARGET | 407 PIPE_BIND_SCANOUT | 408 PIPE_BIND_SHARED); 409 } 410 411 /* Check depth-stencil format support. */ 412 if (usage & PIPE_BIND_DEPTH_STENCIL && 413 r300_is_zs_format_supported(format)) { 414 retval |= PIPE_BIND_DEPTH_STENCIL; 415 } 416 417 /* Check vertex buffer format support. */ 418 if (usage & PIPE_BIND_VERTEX_BUFFER && 419 /* Half float is supported on >= R400. */ 420 (is_r400 || is_r500 || !is_half_float) && 421 /* We have a fallback for FIXED. */ 422 (is_fixed || r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT)) { 423 retval |= PIPE_BIND_VERTEX_BUFFER; 424 } 425 426 /* Transfers are always supported. */ 427 if (usage & PIPE_BIND_TRANSFER_READ) 428 retval |= PIPE_BIND_TRANSFER_READ; 429 if (usage & PIPE_BIND_TRANSFER_WRITE) 430 retval |= PIPE_BIND_TRANSFER_WRITE; 431 432 return retval == usage; 433} 434 435static void r300_destroy_screen(struct pipe_screen* pscreen) 436{ 437 struct r300_screen* r300screen = r300_screen(pscreen); 438 struct radeon_winsys *rws = radeon_winsys(pscreen); 439 440 util_slab_destroy(&r300screen->pool_buffers); 441 pipe_mutex_destroy(r300screen->num_contexts_mutex); 442 443 if (rws) 444 rws->destroy(rws); 445 446 FREE(r300screen); 447} 448 449static void r300_fence_reference(struct pipe_screen *screen, 450 struct pipe_fence_handle **ptr, 451 struct pipe_fence_handle *fence) 452{ 453 pb_reference((struct pb_buffer**)ptr, 454 (struct pb_buffer*)fence); 455} 456 457static boolean r300_fence_signalled(struct pipe_screen *screen, 458 struct pipe_fence_handle *fence) 459{ 460 struct radeon_winsys *rws = r300_screen(screen)->rws; 461 struct pb_buffer *rfence = (struct pb_buffer*)fence; 462 463 return !rws->buffer_is_busy(rfence, RADEON_USAGE_READWRITE); 464} 465 466static boolean r300_fence_finish(struct pipe_screen *screen, 467 struct pipe_fence_handle *fence, 468 uint64_t timeout) 469{ 470 struct radeon_winsys *rws = r300_screen(screen)->rws; 471 struct pb_buffer *rfence = (struct pb_buffer*)fence; 472 473 if (timeout != PIPE_TIMEOUT_INFINITE) { 474 int64_t start_time = os_time_get(); 475 476 /* Convert to microseconds. */ 477 timeout /= 1000; 478 479 /* Wait in a loop. */ 480 while (rws->buffer_is_busy(rfence, RADEON_USAGE_READWRITE)) { 481 if (os_time_get() - start_time >= timeout) { 482 return FALSE; 483 } 484 os_time_sleep(10); 485 } 486 return TRUE; 487 } 488 489 rws->buffer_wait(rfence, RADEON_USAGE_READWRITE); 490 return TRUE; 491} 492 493struct pipe_screen* r300_screen_create(struct radeon_winsys *rws) 494{ 495 struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen); 496 497 if (!r300screen) { 498 FREE(r300screen); 499 return NULL; 500 } 501 502 rws->query_info(rws, &r300screen->info); 503 504 r300_init_debug(r300screen); 505 r300_parse_chipset(r300screen->info.pci_id, &r300screen->caps); 506 507 if (SCREEN_DBG_ON(r300screen, DBG_NO_ZMASK)) 508 r300screen->caps.zmask_ram = 0; 509 if (SCREEN_DBG_ON(r300screen, DBG_NO_HIZ)) 510 r300screen->caps.hiz_ram = 0; 511 512 if (r300screen->info.drm_minor < 8) 513 r300screen->caps.has_us_format = FALSE; 514 515 pipe_mutex_init(r300screen->num_contexts_mutex); 516 517 util_slab_create(&r300screen->pool_buffers, 518 sizeof(struct r300_resource), 64, 519 UTIL_SLAB_SINGLETHREADED); 520 521 r300screen->rws = rws; 522 r300screen->screen.winsys = (struct pipe_winsys*)rws; 523 r300screen->screen.destroy = r300_destroy_screen; 524 r300screen->screen.get_name = r300_get_name; 525 r300screen->screen.get_vendor = r300_get_vendor; 526 r300screen->screen.get_param = r300_get_param; 527 r300screen->screen.get_shader_param = r300_get_shader_param; 528 r300screen->screen.get_paramf = r300_get_paramf; 529 r300screen->screen.get_video_param = r300_get_video_param; 530 r300screen->screen.is_format_supported = r300_is_format_supported; 531 r300screen->screen.is_video_format_supported = vl_video_buffer_is_format_supported; 532 r300screen->screen.context_create = r300_create_context; 533 r300screen->screen.fence_reference = r300_fence_reference; 534 r300screen->screen.fence_signalled = r300_fence_signalled; 535 r300screen->screen.fence_finish = r300_fence_finish; 536 537 r300_init_screen_resource_functions(r300screen); 538 539 util_format_s3tc_init(); 540 541 return &r300screen->screen; 542} 543