src/mesa/state_tracker/st_texture.c

   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 "st_inlines.h"
  34 #include "main/enums.h"
  35 #include "main/texfetch.h"
  36 #include "main/teximage.h"
  37 #include "main/texobj.h"
  38
  39 #undef Elements  /* fix re-defined macro warning */
  40
  41 #include "pipe/p_state.h"
  42 #include "pipe/p_context.h"
  43 #include "pipe/p_defines.h"
  44 #include "pipe/p_inlines.h"
  45 #include "util/u_format.h"
  46 #include "util/u_rect.h"
  47 #include "util/u_math.h"
  48
  49
  50 #define DBG if(0) printf
  51
  52 #if 0
  53 static GLenum
  54 target_to_target(GLenum target)
  55 {
  56    switch (target) {
  57    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
  58    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
  59    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
  60    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
  61    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
  62    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
  63       return GL_TEXTURE_CUBE_MAP_ARB;
  64    default:
  65       return target;
  66    }
  67 }
  68 #endif
  69
  70
  71 /**
  72  * Allocate a new pipe_texture object
  73  * width0, height0, depth0 are the dimensions of the level 0 image
  74  * (the highest resolution).  last_level indicates how many mipmap levels
  75  * to allocate storage for.  For non-mipmapped textures, this will be zero.
  76  */
  77 struct pipe_texture *
  78 st_texture_create(struct st_context *st,
  79                   enum pipe_texture_target target,
  80                   enum pipe_format format,
  81                   GLuint last_level,
  82                   GLuint width0,
  83                   GLuint height0,
  84                   GLuint depth0,
  85                   GLuint usage )
  86 {
  87    struct pipe_texture pt, *newtex;
  88    struct pipe_screen *screen = st->pipe->screen;
  89
  90    assert(target <= PIPE_TEXTURE_CUBE);
  91
  92    DBG("%s target %s format %s last_level %d\n", __FUNCTION__,
  93        _mesa_lookup_enum_by_nr(target),
  94        _mesa_lookup_enum_by_nr(format), last_level);
  95
  96    assert(format);
  97    assert(screen->is_format_supported(screen, format, target,
  98                                       PIPE_TEXTURE_USAGE_SAMPLER, 0));
  99
 100    memset(&pt, 0, sizeof(pt));
 101    pt.target = target;
 102    pt.format = format;
 103    pt.last_level = last_level;
 104    pt.width0 = width0;
 105    pt.height0 = height0;
 106    pt.depth0 = depth0;
 107    pt.tex_usage = usage;
 108
 109    newtex = screen->texture_create(screen, &pt);
 110
 111    assert(!newtex || pipe_is_referenced(&newtex->reference));
 112
 113    return newtex;
 114 }
 115
 116
 117 /**
 118  * Check if a texture image can be pulled into a unified mipmap texture.
 119  */
 120 GLboolean
 121 st_texture_match_image(const struct pipe_texture *pt,
 122                        const struct gl_texture_image *image,
 123                        GLuint face, GLuint level)
 124 {
 125    /* Images with borders are never pulled into mipmap textures.
 126     */
 127    if (image->Border)
 128       return GL_FALSE;
 129
 130    /* Check if this image's format matches the established texture's format.
 131     */
 132    if (st_mesa_format_to_pipe_format(image->TexFormat) != pt->format)
 133       return GL_FALSE;
 134
 135    /* Test if this image's size matches what's expected in the
 136     * established texture.
 137     */
 138    if (image->Width != u_minify(pt->width0, level) ||
 139        image->Height != u_minify(pt->height0, level) ||
 140        image->Depth != u_minify(pt->depth0, level))
 141       return GL_FALSE;
 142
 143    return GL_TRUE;
 144 }
 145
 146
 147 #if 000
 148 /* Although we use the image_offset[] array to store relative offsets
 149  * to cube faces, Mesa doesn't know anything about this and expects
 150  * each cube face to be treated as a separate image.
 151  *
 152  * These functions present that view to mesa:
 153  */
 154 const GLuint *
 155 st_texture_depth_offsets(struct pipe_texture *pt, GLuint level)
 156 {
 157    static const GLuint zero = 0;
 158
 159    if (pt->target != PIPE_TEXTURE_3D || pt->level[level].nr_images == 1)
 160       return &zero;
 161    else
 162       return pt->level[level].image_offset;
 163 }
 164
 165
 166 /**
 167  * Return the offset to the given mipmap texture image within the
 168  * texture memory buffer, in bytes.
 169  */
 170 GLuint
 171 st_texture_image_offset(const struct pipe_texture * pt,
 172                         GLuint face, GLuint level)
 173 {
 174    if (pt->target == PIPE_TEXTURE_CUBE)
 175       return (pt->level[level].level_offset +
 176               pt->level[level].image_offset[face] * pt->cpp);
 177    else
 178       return pt->level[level].level_offset;
 179 }
 180 #endif
 181
 182
 183 /**
 184  * Map a teximage in a mipmap texture.
 185  * \param row_stride  returns row stride in bytes
 186  * \param image_stride  returns image stride in bytes (for 3D textures).
 187  * \return address of mapping
 188  */
 189 GLubyte *
 190 st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
 191                      GLuint zoffset, enum pipe_transfer_usage usage,
 192                      GLuint x, GLuint y, GLuint w, GLuint h)
 193 {
 194    struct pipe_context *pipe = st->pipe;
 195    struct pipe_screen *screen = pipe->screen;
 196    struct pipe_texture *pt = stImage->pt;
 197
 198    DBG("%s \n", __FUNCTION__);
 199
 200    stImage->transfer = st_no_flush_get_tex_transfer(st, pt, stImage->face,
 201                                                     stImage->level, zoffset,
 202                                                     usage, x, y, w, h);
 203
 204    if (stImage->transfer)
 205       return screen->transfer_map(screen, stImage->transfer);
 206    else
 207       return NULL;
 208 }
 209
 210
 211 void
 212 st_texture_image_unmap(struct st_context *st,
 213                        struct st_texture_image *stImage)
 214 {
 215    struct pipe_screen *screen = st->pipe->screen;
 216
 217    DBG("%s\n", __FUNCTION__);
 218
 219    screen->transfer_unmap(screen, stImage->transfer);
 220
 221    screen->tex_transfer_destroy(stImage->transfer);
 222 }
 223
 224
 225
 226 /**
 227  * Upload data to a rectangular sub-region.  Lots of choices how to do this:
 228  *
 229  * - memcpy by span to current destination
 230  * - upload data as new buffer and blit
 231  *
 232  * Currently always memcpy.
 233  */
 234 static void
 235 st_surface_data(struct pipe_context *pipe,
 236                 struct pipe_transfer *dst,
 237                 unsigned dstx, unsigned dsty,
 238                 const void *src, unsigned src_stride,
 239                 unsigned srcx, unsigned srcy, unsigned width, unsigned height)
 240 {
 241    struct pipe_screen *screen = pipe->screen;
 242    void *map = screen->transfer_map(screen, dst);
 243
 244    assert(dst->texture);
 245    util_copy_rect(map,
 246                   dst->texture->format,
 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  */
 259 void
 260 st_texture_image_data(struct st_context *st,
 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_context *pipe = st->pipe;
 268    struct pipe_screen *screen = pipe->screen;
 269    GLuint depth = u_minify(dst->depth0, level);
 270    GLuint i;
 271    const GLubyte *srcUB = src;
 272    struct pipe_transfer *dst_transfer;
 273
 274    DBG("%s\n", __FUNCTION__);
 275
 276    for (i = 0; i < depth; i++) {
 277       dst_transfer = st_no_flush_get_tex_transfer(st, dst, face, level, i,
 278                                                   PIPE_TRANSFER_WRITE, 0, 0,
 279                                                   u_minify(dst->width0, level),
 280                                                   u_minify(dst->height0, level));
 281
 282       st_surface_data(pipe, dst_transfer,
 283                       0, 0,                             /* dstx, dsty */
 284                       srcUB,
 285                       src_row_stride,
 286                       0, 0,                             /* source x, y */
 287                       u_minify(dst->width0, level),
 288                       u_minify(dst->height0, level));      /* width, height */
 289
 290       screen->tex_transfer_destroy(dst_transfer);
 291
 292       srcUB += src_image_stride;
 293    }
 294 }
 295
 296
 297 /* Copy mipmap image between textures
 298  */
 299 void
 300 st_texture_image_copy(struct pipe_context *pipe,
 301                       struct pipe_texture *dst, GLuint dstLevel,
 302                       struct pipe_texture *src,
 303                       GLuint face)
 304 {
 305    struct pipe_screen *screen = pipe->screen;
 306    GLuint width = u_minify(dst->width0, dstLevel);
 307    GLuint height = u_minify(dst->height0, dstLevel);
 308    GLuint depth = u_minify(dst->depth0, dstLevel);
 309    struct pipe_surface *src_surface;
 310    struct pipe_surface *dst_surface;
 311    GLuint i;
 312
 313    for (i = 0; i < depth; i++) {
 314       GLuint srcLevel;
 315
 316       /* find src texture level of needed size */
 317       for (srcLevel = 0; srcLevel <= src->last_level; srcLevel++) {
 318          if (u_minify(src->width0, srcLevel) == width &&
 319              u_minify(src->height0, srcLevel) == height) {
 320             break;
 321          }
 322       }
 323       assert(u_minify(src->width0, srcLevel) == width);
 324       assert(u_minify(src->height0, srcLevel) == height);
 325
 326 #if 0
 327       {
 328          src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
 329                                                PIPE_BUFFER_USAGE_CPU_READ);
 330          ubyte *map = screen->surface_map(screen, src_surface, PIPE_BUFFER_USAGE_CPU_READ);
 331          map += src_surface->width * src_surface->height * 4 / 2;
 332          printf("%s center pixel: %d %d %d %d (pt %p[%d] -> %p[%d])\n",
 333                 __FUNCTION__,
 334                 map[0], map[1], map[2], map[3],
 335                 src, srcLevel, dst, dstLevel);
 336
 337          screen->surface_unmap(screen, src_surface);
 338          pipe_surface_reference(&src_surface, NULL);
 339       }
 340 #endif
 341
 342       dst_surface = screen->get_tex_surface(screen, dst, face, dstLevel, i,
 343                                             PIPE_BUFFER_USAGE_GPU_WRITE);
 344
 345       src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
 346                                             PIPE_BUFFER_USAGE_GPU_READ);
 347
 348       if (pipe->surface_copy) {
 349          pipe->surface_copy(pipe,
 350                             dst_surface,
 351                             0, 0, /* destX, Y */
 352                             src_surface,
 353                             0, 0, /* srcX, Y */
 354                             width, height);
 355       } else {
 356          util_surface_copy(pipe, FALSE,
 357                            dst_surface,
 358                            0, 0, /* destX, Y */
 359                            src_surface,
 360                            0, 0, /* srcX, Y */
 361                            width, height);
 362       }
 363
 364       pipe_surface_reference(&src_surface, NULL);
 365       pipe_surface_reference(&dst_surface, NULL);
 366    }
 367 }
 368
 369
 370 /**
 371  * Bind a pipe surface to a texture object.  After the call,
 372  * the texture object is marked dirty and will be (re-)validated.
 373  *
 374  * If this is the first surface bound, the texture object is said to
 375  * switch from normal to surface based.  It will be cleared first in
 376  * this case.
 377  *
 378  * \param ps      pipe surface to be unbound
 379  * \param target  texture target
 380  * \param level   image level
 381  * \param format  internal format of the texture
 382  */
 383 int
 384 st_bind_texture_surface(struct pipe_surface *ps, int target, int level,
 385                         enum pipe_format format)
 386 {
 387    GET_CURRENT_CONTEXT(ctx);
 388    const GLuint unit = ctx->Texture.CurrentUnit;
 389    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 390    struct gl_texture_object *texObj;
 391    struct gl_texture_image *texImage;
 392    struct st_texture_object *stObj;
 393    struct st_texture_image *stImage;
 394    GLenum internalFormat;
 395
 396    switch (target) {
 397    case ST_TEXTURE_2D:
 398       target = GL_TEXTURE_2D;
 399       break;
 400    case ST_TEXTURE_RECT:
 401       target = GL_TEXTURE_RECTANGLE_ARB;
 402       break;
 403    default:
 404       return 0;
 405    }
 406
 407    /* map pipe format to base format for now */
 408    if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 3) > 0)
 409       internalFormat = GL_RGBA;
 410    else
 411       internalFormat = GL_RGB;
 412
 413    texObj = _mesa_select_tex_object(ctx, texUnit, target);
 414    _mesa_lock_texture(ctx, texObj);
 415
 416    stObj = st_texture_object(texObj);
 417    /* switch to surface based */
 418    if (!stObj->surface_based) {
 419       _mesa_clear_texture_object(ctx, texObj);
 420       stObj->surface_based = GL_TRUE;
 421    }
 422
 423    texImage = _mesa_get_tex_image(ctx, texObj, target, level);
 424    stImage = st_texture_image(texImage);
 425
 426    _mesa_init_teximage_fields(ctx, target, texImage,
 427                               ps->width, ps->height, 1, 0, internalFormat);
 428    texImage->TexFormat = st_ChooseTextureFormat(ctx, internalFormat,
 429                                                 GL_RGBA, GL_UNSIGNED_BYTE);
 430    _mesa_set_fetch_functions(texImage, 2);
 431    pipe_texture_reference(&stImage->pt, ps->texture);
 432
 433    _mesa_dirty_texobj(ctx, texObj, GL_TRUE);
 434    _mesa_unlock_texture(ctx, texObj);
 435
 436    return 1;
 437 }
 438
 439
 440 /**
 441  * Unbind a pipe surface from a texture object.  After the call,
 442  * the texture object is marked dirty and will be (re-)validated.
 443  *
 444  * \param ps      pipe surface to be unbound
 445  * \param target  texture target
 446  * \param level   image level
 447  */
 448 int
 449 st_unbind_texture_surface(struct pipe_surface *ps, int target, int level)
 450 {
 451    GET_CURRENT_CONTEXT(ctx);
 452    const GLuint unit = ctx->Texture.CurrentUnit;
 453    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 454    struct gl_texture_object *texObj;
 455    struct gl_texture_image *texImage;
 456    struct st_texture_object *stObj;
 457    struct st_texture_image *stImage;
 458
 459    switch (target) {
 460    case ST_TEXTURE_2D:
 461       target = GL_TEXTURE_2D;
 462       break;
 463    case ST_TEXTURE_RECT:
 464       target = GL_TEXTURE_RECTANGLE_ARB;
 465       break;
 466    default:
 467       return 0;
 468    }
 469
 470    texObj = _mesa_select_tex_object(ctx, texUnit, target);
 471
 472    _mesa_lock_texture(ctx, texObj);
 473
 474    texImage = _mesa_get_tex_image(ctx, texObj, target, level);
 475    stObj = st_texture_object(texObj);
 476    stImage = st_texture_image(texImage);
 477
 478    /* Make sure the pipe surface is still bound.  The texture object is still
 479     * considered surface based even if this is the last bound surface. */
 480    if (stImage->pt == ps->texture) {
 481       pipe_texture_reference(&stImage->pt, NULL);
 482       _mesa_clear_texture_image(ctx, texImage);
 483
 484       _mesa_dirty_texobj(ctx, texObj, GL_TRUE);
 485    }
 486
 487    _mesa_unlock_texture(ctx, texObj);
 488
 489    return 1;
 490 }
 491
 492
 493 /** Redirect rendering into stfb's surface to a texture image */
 494 int
 495 st_bind_teximage(struct st_framebuffer *stfb, uint surfIndex,
 496                  int target, int format, int level)
 497 {
 498    GET_CURRENT_CONTEXT(ctx);
 499    struct st_context *st = ctx->st;
 500    struct pipe_context *pipe = st->pipe;
 501    struct pipe_screen *screen = pipe->screen;
 502    const GLuint unit = ctx->Texture.CurrentUnit;
 503    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 504    struct gl_texture_object *texObj;
 505    struct gl_texture_image *texImage;
 506    struct st_texture_image *stImage;
 507    struct st_renderbuffer *strb;
 508    GLint face = 0, slice = 0;
 509
 510    assert(surfIndex <= ST_SURFACE_DEPTH);
 511
 512    strb = st_renderbuffer(stfb->Base.Attachment[surfIndex].Renderbuffer);
 513
 514    if (strb->texture_save || strb->surface_save) {
 515       /* Error! */
 516       return 0;
 517    }
 518
 519    if (target == ST_TEXTURE_2D) {
 520       texObj = texUnit->CurrentTex[TEXTURE_2D_INDEX];
 521       texImage = _mesa_get_tex_image(ctx, texObj, GL_TEXTURE_2D, level);
 522       stImage = st_texture_image(texImage);
 523    }
 524    else {
 525       /* unsupported target */
 526       return 0;
 527    }
 528
 529    st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 530
 531    /* save the renderbuffer's surface/texture info */
 532    pipe_texture_reference(&strb->texture_save, strb->texture);
 533    pipe_surface_reference(&strb->surface_save, strb->surface);
 534
 535    /* plug in new surface/texture info */
 536    pipe_texture_reference(&strb->texture, stImage->pt);
 537    strb->surface = screen->get_tex_surface(screen, strb->texture,
 538                                            face, level, slice,
 539                                            (PIPE_BUFFER_USAGE_GPU_READ |
 540                                             PIPE_BUFFER_USAGE_GPU_WRITE));
 541
 542    st->dirty.st |= ST_NEW_FRAMEBUFFER;
 543
 544    return 1;
 545 }
 546
 547
 548 /** Undo surface-to-texture binding */
 549 int
 550 st_release_teximage(struct st_framebuffer *stfb, uint surfIndex,
 551                     int target, int format, int level)
 552 {
 553    GET_CURRENT_CONTEXT(ctx);
 554    struct st_context *st = ctx->st;
 555    struct st_renderbuffer *strb;
 556
 557    assert(surfIndex <= ST_SURFACE_DEPTH);
 558
 559    strb = st_renderbuffer(stfb->Base.Attachment[surfIndex].Renderbuffer);
 560
 561    if (!strb->texture_save || !strb->surface_save) {
 562       /* Error! */
 563       return 0;
 564    }
 565
 566    st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 567
 568    /* free tex surface, restore original */
 569    pipe_surface_reference(&strb->surface, strb->surface_save);
 570    pipe_texture_reference(&strb->texture, strb->texture_save);
 571
 572    pipe_surface_reference(&strb->surface_save, NULL);
 573    pipe_texture_reference(&strb->texture_save, NULL);
 574
 575    st->dirty.st |= ST_NEW_FRAMEBUFFER;
 576
 577    return 1;
 578 }
 579
 580 void
 581 st_teximage_flush_before_map(struct st_context *st,
 582                              struct pipe_texture *pt,
 583                              unsigned int face,
 584                              unsigned int level,
 585                              enum pipe_transfer_usage usage)
 586 {
 587    struct pipe_context *pipe = st->pipe;
 588    unsigned referenced =
 589       pipe->is_texture_referenced(pipe, pt, face, level);
 590
 591    if (referenced && ((referenced & PIPE_REFERENCED_FOR_WRITE) ||
 592                       (usage & PIPE_TRANSFER_WRITE)))
 593       st->pipe->flush(st->pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 594 }