st_texture.c revision 1f4a7f3a2eafd99906105ff74b26ea3ae0f19030
1/************************************************************************** 2 * 3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28#include "st_context.h" 29#include "st_format.h" 30#include "st_public.h" 31#include "st_texture.h" 32#include "st_cb_fbo.h" 33#include "main/enums.h" 34#include "main/teximage.h" 35#include "main/texstore.h" 36 37#undef Elements /* fix re-defined macro warning */ 38 39#include "pipe/p_state.h" 40#include "pipe/p_context.h" 41#include "pipe/p_defines.h" 42#include "pipe/p_inlines.h" 43#include "util/u_rect.h" 44 45 46#define DBG if(0) printf 47 48#if 0 49static GLenum 50target_to_target(GLenum target) 51{ 52 switch (target) { 53 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: 54 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: 55 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: 56 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: 57 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: 58 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: 59 return GL_TEXTURE_CUBE_MAP_ARB; 60 default: 61 return target; 62 } 63} 64#endif 65 66 67/** 68 * Allocate a new pipe_texture object 69 * width0, height0, depth0 are the dimensions of the level 0 image 70 * (the highest resolution). last_level indicates how many mipmap levels 71 * to allocate storage for. For non-mipmapped textures, this will be zero. 72 */ 73struct pipe_texture * 74st_texture_create(struct st_context *st, 75 enum pipe_texture_target target, 76 enum pipe_format format, 77 GLuint last_level, 78 GLuint width0, 79 GLuint height0, 80 GLuint depth0, 81 GLuint usage ) 82{ 83 struct pipe_texture pt, *newtex; 84 struct pipe_screen *screen = st->pipe->screen; 85 86 assert(target <= PIPE_TEXTURE_CUBE); 87 88 DBG("%s target %s format %s last_level %d\n", __FUNCTION__, 89 _mesa_lookup_enum_by_nr(target), 90 _mesa_lookup_enum_by_nr(format), last_level); 91 92 assert(format); 93 assert(screen->is_format_supported(screen, format, target, 94 PIPE_TEXTURE_USAGE_SAMPLER, 0)); 95 96 memset(&pt, 0, sizeof(pt)); 97 pt.target = target; 98 pt.format = format; 99 pt.last_level = last_level; 100 pt.width[0] = width0; 101 pt.height[0] = height0; 102 pt.depth[0] = depth0; 103 pt.compressed = pf_is_compressed(format); 104 pf_get_block(format, &pt.block); 105 pt.tex_usage = usage; 106 107 newtex = screen->texture_create(screen, &pt); 108 109 assert(!newtex || pipe_is_referenced(&newtex->reference)); 110 111 return newtex; 112} 113 114 115/** 116 * Check if a texture image can be pulled into a unified mipmap texture. 117 */ 118GLboolean 119st_texture_match_image(const struct pipe_texture *pt, 120 const struct gl_texture_image *image, 121 GLuint face, GLuint level) 122{ 123 /* Images with borders are never pulled into mipmap textures. 124 */ 125 if (image->Border) 126 return GL_FALSE; 127 128 /* Check if this image's format matches the established texture's format. 129 */ 130 if (st_mesa_format_to_pipe_format(image->TexFormat->MesaFormat) != pt->format) 131 return GL_FALSE; 132 133 /* Test if this image's size matches what's expected in the 134 * established texture. 135 */ 136 if (image->Width != pt->width[level] || 137 image->Height != pt->height[level] || 138 image->Depth != pt->depth[level]) 139 return GL_FALSE; 140 141 return GL_TRUE; 142} 143 144 145#if 000 146/* Although we use the image_offset[] array to store relative offsets 147 * to cube faces, Mesa doesn't know anything about this and expects 148 * each cube face to be treated as a separate image. 149 * 150 * These functions present that view to mesa: 151 */ 152const GLuint * 153st_texture_depth_offsets(struct pipe_texture *pt, GLuint level) 154{ 155 static const GLuint zero = 0; 156 157 if (pt->target != PIPE_TEXTURE_3D || pt->level[level].nr_images == 1) 158 return &zero; 159 else 160 return pt->level[level].image_offset; 161} 162 163 164/** 165 * Return the offset to the given mipmap texture image within the 166 * texture memory buffer, in bytes. 167 */ 168GLuint 169st_texture_image_offset(const struct pipe_texture * pt, 170 GLuint face, GLuint level) 171{ 172 if (pt->target == PIPE_TEXTURE_CUBE) 173 return (pt->level[level].level_offset + 174 pt->level[level].image_offset[face] * pt->cpp); 175 else 176 return pt->level[level].level_offset; 177} 178#endif 179 180 181/** 182 * Map a teximage in a mipmap texture. 183 * \param row_stride returns row stride in bytes 184 * \param image_stride returns image stride in bytes (for 3D textures). 185 * \return address of mapping 186 */ 187GLubyte * 188st_texture_image_map(struct st_context *st, struct st_texture_image *stImage, 189 GLuint zoffset, enum pipe_transfer_usage usage, 190 GLuint x, GLuint y, GLuint w, GLuint h) 191{ 192 struct pipe_screen *screen = st->pipe->screen; 193 struct pipe_texture *pt = stImage->pt; 194 DBG("%s \n", __FUNCTION__); 195 196 stImage->transfer = screen->get_tex_transfer(screen, pt, stImage->face, 197 stImage->level, zoffset, 198 usage, x, y, w, h); 199 200 if (stImage->transfer) 201 return screen->transfer_map(screen, stImage->transfer); 202 else 203 return NULL; 204} 205 206 207void 208st_texture_image_unmap(struct st_context *st, 209 struct st_texture_image *stImage) 210{ 211 struct pipe_screen *screen = st->pipe->screen; 212 213 DBG("%s\n", __FUNCTION__); 214 215 screen->transfer_unmap(screen, stImage->transfer); 216 217 screen->tex_transfer_destroy(stImage->transfer); 218} 219 220 221 222/** 223 * Upload data to a rectangular sub-region. Lots of choices how to do this: 224 * 225 * - memcpy by span to current destination 226 * - upload data as new buffer and blit 227 * 228 * Currently always memcpy. 229 */ 230static void 231st_surface_data(struct pipe_context *pipe, 232 struct pipe_transfer *dst, 233 unsigned dstx, unsigned dsty, 234 const void *src, unsigned src_stride, 235 unsigned srcx, unsigned srcy, unsigned width, unsigned height) 236{ 237 struct pipe_screen *screen = pipe->screen; 238 void *map = screen->transfer_map(screen, dst); 239 240 pipe_copy_rect(map, 241 &dst->block, 242 dst->stride, 243 dstx, dsty, 244 width, height, 245 src, src_stride, 246 srcx, srcy); 247 248 screen->transfer_unmap(screen, dst); 249} 250 251 252/* Upload data for a particular image. 253 */ 254void 255st_texture_image_data(struct pipe_context *pipe, 256 struct pipe_texture *dst, 257 GLuint face, 258 GLuint level, 259 void *src, 260 GLuint src_row_stride, GLuint src_image_stride) 261{ 262 struct pipe_screen *screen = pipe->screen; 263 GLuint depth = dst->depth[level]; 264 GLuint i; 265 const GLubyte *srcUB = src; 266 struct pipe_transfer *dst_transfer; 267 268 DBG("%s\n", __FUNCTION__); 269 for (i = 0; i < depth; i++) { 270 dst_transfer = screen->get_tex_transfer(screen, dst, face, level, i, 271 PIPE_TRANSFER_WRITE, 0, 0, 272 dst->width[level], 273 dst->height[level]); 274 275 st_surface_data(pipe, dst_transfer, 276 0, 0, /* dstx, dsty */ 277 srcUB, 278 src_row_stride, 279 0, 0, /* source x, y */ 280 dst->width[level], dst->height[level]); /* width, height */ 281 282 screen->tex_transfer_destroy(dst_transfer); 283 284 srcUB += src_image_stride; 285 } 286} 287 288 289/* Copy mipmap image between textures 290 */ 291void 292st_texture_image_copy(struct pipe_context *pipe, 293 struct pipe_texture *dst, GLuint dstLevel, 294 struct pipe_texture *src, 295 GLuint face) 296{ 297 struct pipe_screen *screen = pipe->screen; 298 GLuint width = dst->width[dstLevel]; 299 GLuint height = dst->height[dstLevel]; 300 GLuint depth = dst->depth[dstLevel]; 301 struct pipe_surface *src_surface; 302 struct pipe_surface *dst_surface; 303 GLuint i; 304 305 for (i = 0; i < depth; i++) { 306 GLuint srcLevel; 307 308 /* find src texture level of needed size */ 309 for (srcLevel = 0; srcLevel <= src->last_level; srcLevel++) { 310 if (src->width[srcLevel] == width && 311 src->height[srcLevel] == height) { 312 break; 313 } 314 } 315 assert(src->width[srcLevel] == width); 316 assert(src->height[srcLevel] == height); 317 318#if 0 319 { 320 src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i, 321 PIPE_BUFFER_USAGE_CPU_READ); 322 ubyte *map = screen->surface_map(screen, src_surface, PIPE_BUFFER_USAGE_CPU_READ); 323 map += src_surface->width * src_surface->height * 4 / 2; 324 printf("%s center pixel: %d %d %d %d (pt %p[%d] -> %p[%d])\n", 325 __FUNCTION__, 326 map[0], map[1], map[2], map[3], 327 src, srcLevel, dst, dstLevel); 328 329 screen->surface_unmap(screen, src_surface); 330 pipe_surface_reference(&src_surface, NULL); 331 } 332#endif 333 334 dst_surface = screen->get_tex_surface(screen, dst, face, dstLevel, i, 335 PIPE_BUFFER_USAGE_GPU_WRITE); 336 337 src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i, 338 PIPE_BUFFER_USAGE_GPU_READ); 339 340 pipe->surface_copy(pipe, 341 dst_surface, 342 0, 0, /* destX, Y */ 343 src_surface, 344 0, 0, /* srcX, Y */ 345 width, height); 346 347 pipe_surface_reference(&src_surface, NULL); 348 pipe_surface_reference(&dst_surface, NULL); 349 } 350} 351 352/** Bind a pipe surface for use as a texture image */ 353int 354st_set_teximage(struct pipe_texture *pt, int target) 355{ 356 GET_CURRENT_CONTEXT(ctx); 357 const GLuint unit = ctx->Texture.CurrentUnit; 358 struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; 359 struct gl_texture_object *texObj; 360 struct gl_texture_image *texImage; 361 struct st_texture_image *stImage; 362 int internalFormat; 363 364 switch (pt->format) { 365 case PIPE_FORMAT_A8R8G8B8_UNORM: 366 internalFormat = GL_RGBA8; 367 break; 368 default: 369 return 0; 370 }; 371 372 switch (target) { 373 case ST_TEXTURE_2D: 374 target = GL_TEXTURE_2D; 375 break; 376 case ST_TEXTURE_RECT: 377 target = GL_TEXTURE_RECTANGLE_ARB; 378 break; 379 default: 380 return 0; 381 } 382 383 texObj = _mesa_select_tex_object(ctx, texUnit, target); 384 texImage = _mesa_get_tex_image(ctx, texObj, target, 0); 385 stImage = st_texture_image(texImage); 386 387 _mesa_init_teximage_fields(ctx, GL_TEXTURE_2D, texImage, pt->width[0], 388 pt->height[0], 1, 0, internalFormat); 389 390 texImage->TexFormat = st_ChooseTextureFormat(ctx, internalFormat, GL_RGBA, 391 GL_UNSIGNED_BYTE); 392 _mesa_set_fetch_functions(texImage, 2); 393 394 pipe_texture_reference(&stImage->pt, pt); 395 396 return 1; 397} 398 399/** Redirect rendering into stfb's surface to a texture image */ 400int 401st_bind_teximage(struct st_framebuffer *stfb, uint surfIndex, 402 int target, int format, int level) 403{ 404 GET_CURRENT_CONTEXT(ctx); 405 struct st_context *st = ctx->st; 406 struct pipe_context *pipe = st->pipe; 407 struct pipe_screen *screen = pipe->screen; 408 const GLuint unit = ctx->Texture.CurrentUnit; 409 struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; 410 struct gl_texture_object *texObj; 411 struct gl_texture_image *texImage; 412 struct st_texture_image *stImage; 413 struct st_renderbuffer *strb; 414 GLint face = 0, slice = 0; 415 416 assert(surfIndex <= ST_SURFACE_DEPTH); 417 418 strb = st_renderbuffer(stfb->Base.Attachment[surfIndex].Renderbuffer); 419 420 if (strb->texture_save || strb->surface_save) { 421 /* Error! */ 422 return 0; 423 } 424 425 if (target == ST_TEXTURE_2D) { 426 texObj = texUnit->CurrentTex[TEXTURE_2D_INDEX]; 427 texImage = _mesa_get_tex_image(ctx, texObj, GL_TEXTURE_2D, level); 428 stImage = st_texture_image(texImage); 429 } 430 else { 431 /* unsupported target */ 432 return 0; 433 } 434 435 st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL); 436 437 /* save the renderbuffer's surface/texture info */ 438 pipe_texture_reference(&strb->texture_save, strb->texture); 439 pipe_surface_reference(&strb->surface_save, strb->surface); 440 441 /* plug in new surface/texture info */ 442 pipe_texture_reference(&strb->texture, stImage->pt); 443 strb->surface = screen->get_tex_surface(screen, strb->texture, 444 face, level, slice, 445 (PIPE_BUFFER_USAGE_GPU_READ | 446 PIPE_BUFFER_USAGE_GPU_WRITE)); 447 448 st->dirty.st |= ST_NEW_FRAMEBUFFER; 449 450 return 1; 451} 452 453 454/** Undo surface-to-texture binding */ 455int 456st_release_teximage(struct st_framebuffer *stfb, uint surfIndex, 457 int target, int format, int level) 458{ 459 GET_CURRENT_CONTEXT(ctx); 460 struct st_context *st = ctx->st; 461 struct st_renderbuffer *strb; 462 463 assert(surfIndex <= ST_SURFACE_DEPTH); 464 465 strb = st_renderbuffer(stfb->Base.Attachment[surfIndex].Renderbuffer); 466 467 if (!strb->texture_save || !strb->surface_save) { 468 /* Error! */ 469 return 0; 470 } 471 472 st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL); 473 474 /* free tex surface, restore original */ 475 pipe_surface_reference(&strb->surface, strb->surface_save); 476 pipe_texture_reference(&strb->texture, strb->texture_save); 477 478 pipe_surface_reference(&strb->surface_save, NULL); 479 pipe_texture_reference(&strb->texture_save, NULL); 480 481 st->dirty.st |= ST_NEW_FRAMEBUFFER; 482 483 return 1; 484} 485