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 "util/u_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_resource 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_resource *
  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 bind )
  86 {
  87    struct pipe_resource 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_BIND_SAMPLER_VIEW, 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._usage = PIPE_USAGE_DEFAULT;
 108    pt.bind = bind;
 109    pt.flags = 0;
 110
 111    newtex = screen->resource_create(screen, &pt);
 112
 113    assert(!newtex || pipe_is_referenced(&newtex->reference));
 114
 115    return newtex;
 116 }
 117
 118
 119 /**
 120  * Check if a texture image can be pulled into a unified mipmap texture.
 121  */
 122 GLboolean
 123 st_texture_match_image(const struct pipe_resource *pt,
 124                        const struct gl_texture_image *image,
 125                        GLuint face, GLuint level)
 126 {
 127    /* Images with borders are never pulled into mipmap textures.
 128     */
 129    if (image->Border)
 130       return GL_FALSE;
 131
 132    /* Check if this image's format matches the established texture's format.
 133     */
 134    if (st_mesa_format_to_pipe_format(image->TexFormat) != pt->format)
 135       return GL_FALSE;
 136
 137    /* Test if this image's size matches what's expected in the
 138     * established texture.
 139     */
 140    if (image->Width != u_minify(pt->width0, level) ||
 141        image->Height != u_minify(pt->height0, level) ||
 142        image->Depth != u_minify(pt->depth0, level))
 143       return GL_FALSE;
 144
 145    return GL_TRUE;
 146 }
 147
 148
 149 #if 000
 150 /* Although we use the image_offset[] array to store relative offsets
 151  * to cube faces, Mesa doesn't know anything about this and expects
 152  * each cube face to be treated as a separate image.
 153  *
 154  * These functions present that view to mesa:
 155  */
 156 const GLuint *
 157 st_texture_depth_offsets(struct pipe_resource *pt, GLuint level)
 158 {
 159    static const GLuint zero = 0;
 160
 161    if (pt->target != PIPE_TEXTURE_3D || pt->level[level].nr_images == 1)
 162       return &zero;
 163    else
 164       return pt->level[level].image_offset;
 165 }
 166
 167
 168 /**
 169  * Return the offset to the given mipmap texture image within the
 170  * texture memory buffer, in bytes.
 171  */
 172 GLuint
 173 st_texture_image_offset(const struct pipe_resource * pt,
 174                         GLuint face, GLuint level)
 175 {
 176    if (pt->target == PIPE_TEXTURE_CUBE)
 177       return (pt->level[level].level_offset +
 178               pt->level[level].image_offset[face] * pt->cpp);
 179    else
 180       return pt->level[level].level_offset;
 181 }
 182 #endif
 183
 184
 185 /**
 186  * Map a teximage in a mipmap texture.
 187  * \param row_stride  returns row stride in bytes
 188  * \param image_stride  returns image stride in bytes (for 3D textures).
 189  * \return address of mapping
 190  */
 191 GLubyte *
 192 st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
 193                      GLuint zoffset, enum pipe_transfer_usage usage,
 194                      GLuint x, GLuint y, GLuint w, GLuint h)
 195 {
 196    struct pipe_context *pipe = st->pipe;
 197    struct pipe_resource *pt = stImage->pt;
 198
 199    DBG("%s \n", __FUNCTION__);
 200
 201    stImage->transfer = st_no_flush_get_tex_transfer(st, pt, stImage->face,
 202                                                     stImage->level, zoffset,
 203                                                     usage, x, y, w, h);
 204
 205    if (stImage->transfer)
 206       return pipe_transfer_map(pipe, stImage->transfer);
 207    else
 208       return NULL;
 209 }
 210
 211
 212 void
 213 st_texture_image_unmap(struct st_context *st,
 214                        struct st_texture_image *stImage)
 215 {
 216    struct pipe_context *pipe = st->pipe;
 217
 218    DBG("%s\n", __FUNCTION__);
 219
 220    pipe_transfer_unmap(pipe, stImage->transfer);
 221
 222    pipe->transfer_destroy(pipe, 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  */
 235 static void
 236 st_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    void *map = pipe_transfer_map(pipe, dst);
 243
 244    assert(dst->resource);
 245    util_copy_rect(map,
 246                   dst->resource->format,
 247                   dst->stride,
 248                   dstx, dsty,
 249                   width, height,
 250                   src, src_stride,
 251                   srcx, srcy);
 252
 253    pipe_transfer_unmap(pipe, 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_resource *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    GLuint depth = u_minify(dst->depth0, level);
 269    GLuint i;
 270    const GLubyte *srcUB = src;
 271    struct pipe_transfer *dst_transfer;
 272
 273    DBG("%s\n", __FUNCTION__);
 274
 275    for (i = 0; i < depth; i++) {
 276       dst_transfer = st_no_flush_get_tex_transfer(st, dst, face, level, i,
 277                                                   PIPE_TRANSFER_WRITE, 0, 0,
 278                                                   u_minify(dst->width0, level),
 279                                                   u_minify(dst->height0, level));
 280
 281       st_surface_data(pipe, dst_transfer,
 282                       0, 0,                             /* dstx, dsty */
 283                       srcUB,
 284                       src_row_stride,
 285                       0, 0,                             /* source x, y */
 286                       u_minify(dst->width0, level),
 287                       u_minify(dst->height0, level));      /* width, height */
 288
 289       pipe->transfer_destroy(pipe, dst_transfer);
 290
 291       srcUB += src_image_stride;
 292    }
 293 }
 294
 295
 296 /* Copy mipmap image between textures
 297  */
 298 void
 299 st_texture_image_copy(struct pipe_context *pipe,
 300                       struct pipe_resource *dst, GLuint dstLevel,
 301                       struct pipe_resource *src,
 302                       GLuint face)
 303 {
 304    struct pipe_screen *screen = pipe->screen;
 305    GLuint width = u_minify(dst->width0, dstLevel);
 306    GLuint height = u_minify(dst->height0, dstLevel);
 307    GLuint depth = u_minify(dst->depth0, dstLevel);
 308    struct pipe_surface *src_surface;
 309    struct pipe_surface *dst_surface;
 310    GLuint i;
 311
 312    for (i = 0; i < depth; i++) {
 313       GLuint srcLevel;
 314
 315       /* find src texture level of needed size */
 316       for (srcLevel = 0; srcLevel <= src->last_level; srcLevel++) {
 317          if (u_minify(src->width0, srcLevel) == width &&
 318              u_minify(src->height0, srcLevel) == height) {
 319             break;
 320          }
 321       }
 322       assert(u_minify(src->width0, srcLevel) == width);
 323       assert(u_minify(src->height0, srcLevel) == height);
 324
 325 #if 0
 326       {
 327          src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
 328                                                PIPE_BUFFER_USAGE_CPU_READ);
 329          ubyte *map = screen->surface_map(screen, src_surface, PIPE_BUFFER_USAGE_CPU_READ);
 330          map += src_surface->width * src_surface->height * 4 / 2;
 331          printf("%s center pixel: %d %d %d %d (pt %p[%d] -> %p[%d])\n",
 332                 __FUNCTION__,
 333                 map[0], map[1], map[2], map[3],
 334                 src, srcLevel, dst, dstLevel);
 335
 336          screen->surface_unmap(screen, src_surface);
 337          pipe_surface_reference(&src_surface, NULL);
 338       }
 339 #endif
 340
 341       dst_surface = screen->get_tex_surface(screen, dst, face, dstLevel, i,
 342                                             PIPE_BIND_BLIT_DESTINATION);
 343
 344       src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
 345                                             PIPE_BIND_BLIT_SOURCE);
 346
 347       pipe->surface_copy(pipe,
 348                          dst_surface,
 349                          0, 0, /* destX, Y */
 350                          src_surface,
 351                          0, 0, /* srcX, Y */
 352                          width, height);
 353
 354       pipe_surface_reference(&src_surface, NULL);
 355       pipe_surface_reference(&dst_surface, NULL);
 356    }
 357 }
 358
 359
 360 /**
 361  * Bind a pipe surface to a texture object.  After the call,
 362  * the texture object is marked dirty and will be (re-)validated.
 363  *
 364  * If this is the first surface bound, the texture object is said to
 365  * switch from normal to surface based.  It will be cleared first in
 366  * this case.
 367  *
 368  * \param ps      pipe surface to be unbound
 369  * \param target  texture target
 370  * \param level   image level
 371  * \param format  internal format of the texture
 372  */
 373 int
 374 st_bind_texture_surface(struct pipe_surface *ps, int target, int level,
 375                         enum pipe_format format)
 376 {
 377    GET_CURRENT_CONTEXT(ctx);
 378    const GLuint unit = ctx->Texture.CurrentUnit;
 379    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 380    struct gl_texture_object *texObj;
 381    struct gl_texture_image *texImage;
 382    struct st_texture_object *stObj;
 383    struct st_texture_image *stImage;
 384    GLenum internalFormat;
 385
 386    switch (target) {
 387    case ST_TEXTURE_2D:
 388       target = GL_TEXTURE_2D;
 389       break;
 390    case ST_TEXTURE_RECT:
 391       target = GL_TEXTURE_RECTANGLE_ARB;
 392       break;
 393    default:
 394       return 0;
 395    }
 396
 397    /* map pipe format to base format for now */
 398    if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 3) > 0)
 399       internalFormat = GL_RGBA;
 400    else
 401       internalFormat = GL_RGB;
 402
 403    texObj = _mesa_select_tex_object(ctx, texUnit, target);
 404    _mesa_lock_texture(ctx, texObj);
 405
 406    stObj = st_texture_object(texObj);
 407    /* switch to surface based */
 408    if (!stObj->surface_based) {
 409       _mesa_clear_texture_object(ctx, texObj);
 410       stObj->surface_based = GL_TRUE;
 411    }
 412
 413    texImage = _mesa_get_tex_image(ctx, texObj, target, level);
 414    stImage = st_texture_image(texImage);
 415
 416    _mesa_init_teximage_fields(ctx, target, texImage,
 417                               ps->width, ps->height, 1, 0, internalFormat);
 418    texImage->TexFormat = st_ChooseTextureFormat(ctx, internalFormat,
 419                                                 GL_RGBA, GL_UNSIGNED_BYTE);
 420    _mesa_set_fetch_functions(texImage, 2);
 421    pipe_resource_reference(&stImage->pt, ps->texture);
 422
 423    _mesa_dirty_texobj(ctx, texObj, GL_TRUE);
 424    _mesa_unlock_texture(ctx, texObj);
 425
 426    return 1;
 427 }
 428
 429
 430 /**
 431  * Unbind a pipe surface from a texture object.  After the call,
 432  * the texture object is marked dirty and will be (re-)validated.
 433  *
 434  * \param ps      pipe surface to be unbound
 435  * \param target  texture target
 436  * \param level   image level
 437  */
 438 int
 439 st_unbind_texture_surface(struct pipe_surface *ps, int target, int level)
 440 {
 441    GET_CURRENT_CONTEXT(ctx);
 442    const GLuint unit = ctx->Texture.CurrentUnit;
 443    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 444    struct gl_texture_object *texObj;
 445    struct gl_texture_image *texImage;
 446    struct st_texture_object *stObj;
 447    struct st_texture_image *stImage;
 448
 449    switch (target) {
 450    case ST_TEXTURE_2D:
 451       target = GL_TEXTURE_2D;
 452       break;
 453    case ST_TEXTURE_RECT:
 454       target = GL_TEXTURE_RECTANGLE_ARB;
 455       break;
 456    default:
 457       return 0;
 458    }
 459
 460    texObj = _mesa_select_tex_object(ctx, texUnit, target);
 461
 462    _mesa_lock_texture(ctx, texObj);
 463
 464    texImage = _mesa_get_tex_image(ctx, texObj, target, level);
 465    stObj = st_texture_object(texObj);
 466    stImage = st_texture_image(texImage);
 467
 468    /* Make sure the pipe surface is still bound.  The texture object is still
 469     * considered surface based even if this is the last bound surface. */
 470    if (stImage->pt == ps->texture) {
 471       pipe_resource_reference(&stImage->pt, NULL);
 472       _mesa_clear_texture_image(ctx, texImage);
 473
 474       _mesa_dirty_texobj(ctx, texObj, GL_TRUE);
 475    }
 476
 477    _mesa_unlock_texture(ctx, texObj);
 478
 479    return 1;
 480 }
 481
 482
 483 /** Redirect rendering into stfb's surface to a texture image */
 484 int
 485 st_bind_teximage(struct st_framebuffer *stfb, uint surfIndex,
 486                  int target, int format, int level)
 487 {
 488    GET_CURRENT_CONTEXT(ctx);
 489    struct st_context *st = ctx->st;
 490    struct pipe_context *pipe = st->pipe;
 491    struct pipe_screen *screen = pipe->screen;
 492    const GLuint unit = ctx->Texture.CurrentUnit;
 493    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 494    struct gl_texture_object *texObj;
 495    struct gl_texture_image *texImage;
 496    struct st_texture_image *stImage;
 497    struct st_renderbuffer *strb;
 498    GLint face = 0, slice = 0;
 499
 500    assert(surfIndex <= ST_SURFACE_DEPTH);
 501
 502    strb = st_renderbuffer(stfb->Base.Attachment[surfIndex].Renderbuffer);
 503
 504    if (strb->texture_save || strb->surface_save) {
 505       /* Error! */
 506       return 0;
 507    }
 508
 509    if (target == ST_TEXTURE_2D) {
 510       texObj = texUnit->CurrentTex[TEXTURE_2D_INDEX];
 511       texImage = _mesa_get_tex_image(ctx, texObj, GL_TEXTURE_2D, level);
 512       stImage = st_texture_image(texImage);
 513    }
 514    else {
 515       /* unsupported target */
 516       return 0;
 517    }
 518
 519    st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 520
 521    /* save the renderbuffer's surface/texture info */
 522    pipe_resource_reference(&strb->texture_save, strb->texture);
 523    pipe_surface_reference(&strb->surface_save, strb->surface);
 524    pipe_sampler_view_reference(&strb->sampler_view_save, strb->sampler_view);
 525
 526    /* plug in new surface/texture info */
 527    pipe_resource_reference(&strb->texture, stImage->pt);
 528
 529    /* XXX: Shouldn't we release reference to old surface here?
 530     */
 531
 532    strb->surface = screen->get_tex_surface(screen, strb->texture,
 533                                            face, level, slice,
 534                                            (PIPE_BIND_RENDER_TARGET |
 535                                             PIPE_BIND_BLIT_SOURCE |
 536                                             PIPE_BIND_BLIT_DESTINATION));
 537
 538    pipe_sampler_view_reference(&strb->sampler_view, NULL);
 539
 540    st->dirty.st |= ST_NEW_FRAMEBUFFER;
 541
 542    return 1;
 543 }
 544
 545
 546 /** Undo surface-to-texture binding */
 547 int
 548 st_release_teximage(struct st_framebuffer *stfb, uint surfIndex,
 549                     int target, int format, int level)
 550 {
 551    GET_CURRENT_CONTEXT(ctx);
 552    struct st_context *st = ctx->st;
 553    struct st_renderbuffer *strb;
 554
 555    assert(surfIndex <= ST_SURFACE_DEPTH);
 556
 557    strb = st_renderbuffer(stfb->Base.Attachment[surfIndex].Renderbuffer);
 558
 559    if (!strb->texture_save || !strb->surface_save) {
 560       /* Error! */
 561       return 0;
 562    }
 563
 564    st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 565
 566    /* free tex surface, restore original */
 567    pipe_surface_reference(&strb->surface, strb->surface_save);
 568    pipe_resource_reference(&strb->texture, strb->texture_save);
 569    pipe_sampler_view_reference(&strb->sampler_view, strb->sampler_view_save);
 570
 571    pipe_surface_reference(&strb->surface_save, NULL);
 572    pipe_resource_reference(&strb->texture_save, NULL);
 573    pipe_sampler_view_reference(&strb->sampler_view, 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_resource *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_resource_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 }