st_texture.c revision 4617981ec72f7985941bee4b03c534d97ff96bc6
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 "pipe/p_inlines.h" 44#include "util/u_rect.h" 45 46 47#define DBG if(0) printf 48 49#if 0 50static GLenum 51target_to_target(GLenum target) 52{ 53 switch (target) { 54 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: 55 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: 56 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: 57 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: 58 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: 59 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: 60 return GL_TEXTURE_CUBE_MAP_ARB; 61 default: 62 return target; 63 } 64} 65#endif 66 67 68/** 69 * Allocate a new pipe_texture object 70 * width0, height0, depth0 are the dimensions of the level 0 image 71 * (the highest resolution). last_level indicates how many mipmap levels 72 * to allocate storage for. For non-mipmapped textures, this will be zero. 73 */ 74struct pipe_texture * 75st_texture_create(struct st_context *st, 76 enum pipe_texture_target target, 77 enum pipe_format format, 78 GLuint last_level, 79 GLuint width0, 80 GLuint height0, 81 GLuint depth0, 82 GLuint compress_byte, 83 GLuint usage ) 84{ 85 struct pipe_texture pt, *newtex; 86 struct pipe_screen *screen = st->pipe->screen; 87 88 assert(target <= PIPE_TEXTURE_CUBE); 89 90 DBG("%s target %s format %s last_level %d\n", __FUNCTION__, 91 _mesa_lookup_enum_by_nr(target), 92 _mesa_lookup_enum_by_nr(format), last_level); 93 94 assert(format); 95 assert(screen->is_format_supported(screen, format, target, 96 PIPE_TEXTURE_USAGE_SAMPLER, 0)); 97 98 memset(&pt, 0, sizeof(pt)); 99 pt.target = target; 100 pt.format = format; 101 pt.last_level = last_level; 102 pt.width[0] = width0; 103 pt.height[0] = height0; 104 pt.depth[0] = depth0; 105 pt.compressed = compress_byte ? 1 : 0; 106 pf_get_block(format, &pt.block); 107 pt.tex_usage = usage; 108 109 newtex = screen->texture_create(screen, &pt); 110 111 assert(!newtex || newtex->refcount == 1); 112 113 return newtex; 114} 115 116 117/** 118 * Check if a texture image be pulled into a unified mipmap texture. 119 * This mirrors the completeness test in a lot of ways. 120 * 121 * Not sure whether I want to pass gl_texture_image here. 122 */ 123GLboolean 124st_texture_match_image(const struct pipe_texture *pt, 125 const struct gl_texture_image *image, 126 GLuint face, GLuint level) 127{ 128 /* Images with borders are never pulled into mipmap textures. 129 */ 130 if (image->Border) 131 return GL_FALSE; 132 133 if (st_mesa_format_to_pipe_format(image->TexFormat->MesaFormat) != pt->format || 134 image->IsCompressed != pt->compressed) 135 return GL_FALSE; 136 137 /* Test image dimensions against the base level image adjusted for 138 * minification. This will also catch images not present in the 139 * texture, changed targets, etc. 140 */ 141 if (image->Width != pt->width[level] || 142 image->Height != pt->height[level] || 143 image->Depth != pt->depth[level]) 144 return GL_FALSE; 145 146 return GL_TRUE; 147} 148 149 150#if 000 151/* Although we use the image_offset[] array to store relative offsets 152 * to cube faces, Mesa doesn't know anything about this and expects 153 * each cube face to be treated as a separate image. 154 * 155 * These functions present that view to mesa: 156 */ 157const GLuint * 158st_texture_depth_offsets(struct pipe_texture *pt, GLuint level) 159{ 160 static const GLuint zero = 0; 161 162 if (pt->target != PIPE_TEXTURE_3D || pt->level[level].nr_images == 1) 163 return &zero; 164 else 165 return pt->level[level].image_offset; 166} 167 168 169/** 170 * Return the offset to the given mipmap texture image within the 171 * texture memory buffer, in bytes. 172 */ 173GLuint 174st_texture_image_offset(const struct pipe_texture * pt, 175 GLuint face, GLuint level) 176{ 177 if (pt->target == PIPE_TEXTURE_CUBE) 178 return (pt->level[level].level_offset + 179 pt->level[level].image_offset[face] * pt->cpp); 180 else 181 return pt->level[level].level_offset; 182} 183#endif 184 185 186/** 187 * Map a teximage in a mipmap texture. 188 * \param row_stride returns row stride in bytes 189 * \param image_stride returns image stride in bytes (for 3D textures). 190 * \return address of mapping 191 */ 192GLubyte * 193st_texture_image_map(struct st_context *st, struct st_texture_image *stImage, 194 GLuint zoffset, enum pipe_transfer_usage usage, 195 GLuint x, GLuint y, GLuint w, GLuint h) 196{ 197 struct pipe_screen *screen = st->pipe->screen; 198 struct pipe_texture *pt = stImage->pt; 199 DBG("%s \n", __FUNCTION__); 200 201 stImage->transfer = screen->get_tex_transfer(screen, pt, stImage->face, 202 stImage->level, zoffset, 203 usage, x, y, w, h); 204 205 if (stImage->transfer) 206 return screen->transfer_map(screen, stImage->transfer); 207 else 208 return NULL; 209} 210 211 212void 213st_texture_image_unmap(struct st_context *st, 214 struct st_texture_image *stImage) 215{ 216 struct pipe_screen *screen = st->pipe->screen; 217 218 DBG("%s\n", __FUNCTION__); 219 220 screen->transfer_unmap(screen, stImage->transfer); 221 222 screen->tex_transfer_release(screen, &stImage->transfer); 223} 224 225 226 227/** 228 * Upload data to a rectangular sub-region. Lots of choices how to do this: 229 * 230 * - memcpy by span to current destination 231 * - upload data as new buffer and blit 232 * 233 * Currently always memcpy. 234 */ 235static void 236st_surface_data(struct pipe_context *pipe, 237 struct pipe_transfer *dst, 238 unsigned dstx, unsigned dsty, 239 const void *src, unsigned src_stride, 240 unsigned srcx, unsigned srcy, unsigned width, unsigned height) 241{ 242 struct pipe_screen *screen = pipe->screen; 243 void *map = screen->transfer_map(screen, dst); 244 245 pipe_copy_rect(map, 246 &dst->block, 247 dst->stride, 248 dstx, dsty, 249 width, height, 250 src, src_stride, 251 srcx, srcy); 252 253 screen->transfer_unmap(screen, dst); 254} 255 256 257/* Upload data for a particular image. 258 */ 259void 260st_texture_image_data(struct pipe_context *pipe, 261 struct pipe_texture *dst, 262 GLuint face, 263 GLuint level, 264 void *src, 265 GLuint src_row_stride, GLuint src_image_stride) 266{ 267 struct pipe_screen *screen = pipe->screen; 268 GLuint depth = dst->depth[level]; 269 GLuint i; 270 const GLubyte *srcUB = src; 271 struct pipe_transfer *dst_transfer; 272 273 DBG("%s\n", __FUNCTION__); 274 for (i = 0; i < depth; i++) { 275 dst_transfer = screen->get_tex_transfer(screen, dst, face, level, i, 276 PIPE_TRANSFER_WRITE, 0, 0, 277 dst->width[level], 278 dst->height[level]); 279 280 st_surface_data(pipe, dst_transfer, 281 0, 0, /* dstx, dsty */ 282 srcUB, 283 src_row_stride, 284 0, 0, /* source x, y */ 285 dst->width[level], dst->height[level]); /* width, height */ 286 287 screen->tex_transfer_release(screen, &dst_transfer); 288 289 srcUB += src_image_stride; 290 } 291} 292 293 294/* Copy mipmap image between textures 295 */ 296void 297st_texture_image_copy(struct pipe_context *pipe, 298 struct pipe_texture *dst, GLuint dstLevel, 299 struct pipe_texture *src, 300 GLuint face) 301{ 302 struct pipe_screen *screen = pipe->screen; 303 GLuint width = dst->width[dstLevel]; 304 GLuint height = dst->height[dstLevel]; 305 GLuint depth = dst->depth[dstLevel]; 306 struct pipe_surface *src_surface; 307 struct pipe_surface *dst_surface; 308 GLuint i; 309 310 for (i = 0; i < depth; i++) { 311 GLuint srcLevel; 312 313 /* find src texture level of needed size */ 314 for (srcLevel = 0; srcLevel <= src->last_level; srcLevel++) { 315 if (src->width[srcLevel] == width && 316 src->height[srcLevel] == height) { 317 break; 318 } 319 } 320 assert(src->width[srcLevel] == width); 321 assert(src->height[srcLevel] == height); 322 323#if 0 324 { 325 src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i, 326 PIPE_BUFFER_USAGE_CPU_READ); 327 ubyte *map = screen->surface_map(screen, src_surface, PIPE_BUFFER_USAGE_CPU_READ); 328 map += src_surface->width * src_surface->height * 4 / 2; 329 printf("%s center pixel: %d %d %d %d (pt %p[%d] -> %p[%d])\n", 330 __FUNCTION__, 331 map[0], map[1], map[2], map[3], 332 src, srcLevel, dst, dstLevel); 333 334 screen->surface_unmap(screen, src_surface); 335 pipe_surface_reference(&src_surface, NULL); 336 } 337#endif 338 339 dst_surface = screen->get_tex_surface(screen, dst, face, dstLevel, i, 340 PIPE_BUFFER_USAGE_GPU_WRITE); 341 342 src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i, 343 PIPE_BUFFER_USAGE_GPU_READ); 344 345 pipe->surface_copy(pipe, 346 FALSE, 347 dst_surface, 348 0, 0, /* destX, Y */ 349 src_surface, 350 0, 0, /* srcX, Y */ 351 width, height); 352 353 screen->tex_surface_release(screen, &src_surface); 354 screen->tex_surface_release(screen, &dst_surface); 355 } 356} 357 358/** Bind a pipe surface for use as a texture image */ 359int 360st_set_teximage(struct pipe_texture *pt, int target) 361{ 362 GET_CURRENT_CONTEXT(ctx); 363 const GLuint unit = ctx->Texture.CurrentUnit; 364 struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; 365 struct gl_texture_object *texObj; 366 struct gl_texture_image *texImage; 367 struct st_texture_image *stImage; 368 int internalFormat; 369 370 switch (pt->format) { 371 case PIPE_FORMAT_A8R8G8B8_UNORM: 372 internalFormat = GL_RGBA8; 373 break; 374 default: 375 return 0; 376 }; 377 378 switch (target) { 379 case ST_TEXTURE_2D: 380 target = GL_TEXTURE_2D; 381 break; 382 case ST_TEXTURE_RECT: 383 target = GL_TEXTURE_RECTANGLE_ARB; 384 break; 385 default: 386 return 0; 387 } 388 389 texObj = _mesa_select_tex_object(ctx, texUnit, target); 390 texImage = _mesa_get_tex_image(ctx, texObj, target, 0); 391 stImage = st_texture_image(texImage); 392 393 _mesa_init_teximage_fields(ctx, GL_TEXTURE_2D, texImage, pt->width[0], 394 pt->height[0], 1, 0, internalFormat); 395 396 texImage->TexFormat = st_ChooseTextureFormat(ctx, internalFormat, GL_RGBA, 397 GL_UNSIGNED_BYTE); 398 _mesa_set_fetch_functions(texImage, 2); 399 400 pipe_texture_reference(&stImage->pt, pt); 401 402 return 1; 403} 404 405/** Redirect rendering into stfb's surface to a texture image */ 406int 407st_bind_teximage(struct st_framebuffer *stfb, uint surfIndex, 408 int target, int format, int level) 409{ 410 GET_CURRENT_CONTEXT(ctx); 411 struct st_context *st = ctx->st; 412 struct pipe_context *pipe = st->pipe; 413 struct pipe_screen *screen = pipe->screen; 414 const GLuint unit = ctx->Texture.CurrentUnit; 415 struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; 416 struct gl_texture_object *texObj; 417 struct gl_texture_image *texImage; 418 struct st_texture_image *stImage; 419 struct st_renderbuffer *strb; 420 GLint face = 0, slice = 0; 421 422 assert(surfIndex <= ST_SURFACE_DEPTH); 423 424 strb = st_renderbuffer(stfb->Base.Attachment[surfIndex].Renderbuffer); 425 426 if (strb->texture_save || strb->surface_save) { 427 /* Error! */ 428 return 0; 429 } 430 431 if (target == ST_TEXTURE_2D) { 432 texObj = texUnit->Current2D; 433 texImage = _mesa_get_tex_image(ctx, texObj, GL_TEXTURE_2D, level); 434 stImage = st_texture_image(texImage); 435 } 436 else { 437 /* unsupported target */ 438 return 0; 439 } 440 441 st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL); 442 443 /* save the renderbuffer's surface/texture info */ 444 pipe_texture_reference(&strb->texture_save, strb->texture); 445 pipe_surface_reference(&strb->surface_save, strb->surface); 446 447 /* plug in new surface/texture info */ 448 pipe_texture_reference(&strb->texture, stImage->pt); 449 strb->surface = screen->get_tex_surface(screen, strb->texture, 450 face, level, slice, 451 (PIPE_BUFFER_USAGE_GPU_READ | 452 PIPE_BUFFER_USAGE_GPU_WRITE)); 453 454 st->dirty.st |= ST_NEW_FRAMEBUFFER; 455 456 return 1; 457} 458 459 460/** Undo surface-to-texture binding */ 461int 462st_release_teximage(struct st_framebuffer *stfb, uint surfIndex, 463 int target, int format, int level) 464{ 465 GET_CURRENT_CONTEXT(ctx); 466 struct st_context *st = ctx->st; 467 struct st_renderbuffer *strb; 468 469 assert(surfIndex <= ST_SURFACE_DEPTH); 470 471 strb = st_renderbuffer(stfb->Base.Attachment[surfIndex].Renderbuffer); 472 473 if (!strb->texture_save || !strb->surface_save) { 474 /* Error! */ 475 return 0; 476 } 477 478 st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL); 479 480 /* free tex surface, restore original */ 481 pipe_surface_reference(&strb->surface, strb->surface_save); 482 pipe_texture_reference(&strb->texture, strb->texture_save); 483 484 pipe_surface_reference(&strb->surface_save, NULL); 485 pipe_texture_reference(&strb->texture_save, NULL); 486 487 st->dirty.st |= ST_NEW_FRAMEBUFFER; 488 489 return 1; 490} 491