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/teximage.h"
  36 #include "main/texstore.h"
  37
  38 #undef Elements  /* fix re-defined macro warning */
  39
  40 #include "pipe/p_state.h"
  41 #include "pipe/p_context.h"
  42 #include "pipe/p_defines.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
  50 static GLenum
  51 target_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  */
  74 struct pipe_texture *
  75 st_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 usage )
  83 {
  84    struct pipe_texture pt, *newtex;
  85    struct pipe_screen *screen = st->pipe->screen;
  86
  87    assert(target <= PIPE_TEXTURE_CUBE);
  88
  89    DBG("%s target %s format %s last_level %d\n", __FUNCTION__,
  90        _mesa_lookup_enum_by_nr(target),
  91        _mesa_lookup_enum_by_nr(format), last_level);
  92
  93    assert(format);
  94    assert(screen->is_format_supported(screen, format, target,
  95                                       PIPE_TEXTURE_USAGE_SAMPLER, 0));
  96
  97    memset(&pt, 0, sizeof(pt));
  98    pt.target = target;
  99    pt.format = format;
 100    pt.last_level = last_level;
 101    pt.width[0] = width0;
 102    pt.height[0] = height0;
 103    pt.depth[0] = depth0;
 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  */
 118 GLboolean
 119 st_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  */
 152 const GLuint *
 153 st_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  */
 168 GLuint
 169 st_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  */
 187 GLubyte *
 188 st_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_context *pipe = st->pipe;
 193    struct pipe_screen *screen = pipe->screen;
 194    struct pipe_texture *pt = stImage->pt;
 195
 196    DBG("%s \n", __FUNCTION__);
 197
 198    stImage->transfer = st_no_flush_get_tex_transfer(st, pt, stImage->face,
 199                                                     stImage->level, zoffset,
 200                                                     usage, x, y, w, h);
 201
 202    if (stImage->transfer)
 203       return screen->transfer_map(screen, stImage->transfer);
 204    else
 205       return NULL;
 206 }
 207
 208
 209 void
 210 st_texture_image_unmap(struct st_context *st,
 211                        struct st_texture_image *stImage)
 212 {
 213    struct pipe_screen *screen = st->pipe->screen;
 214
 215    DBG("%s\n", __FUNCTION__);
 216
 217    screen->transfer_unmap(screen, stImage->transfer);
 218
 219    screen->tex_transfer_destroy(stImage->transfer);
 220 }
 221
 222
 223
 224 /**
 225  * Upload data to a rectangular sub-region.  Lots of choices how to do this:
 226  *
 227  * - memcpy by span to current destination
 228  * - upload data as new buffer and blit
 229  *
 230  * Currently always memcpy.
 231  */
 232 static void
 233 st_surface_data(struct pipe_context *pipe,
 234                 struct pipe_transfer *dst,
 235                 unsigned dstx, unsigned dsty,
 236                 const void *src, unsigned src_stride,
 237                 unsigned srcx, unsigned srcy, unsigned width, unsigned height)
 238 {
 239    struct pipe_screen *screen = pipe->screen;
 240    void *map = screen->transfer_map(screen, dst);
 241
 242    pipe_copy_rect(map,
 243                   &dst->block,
 244                   dst->stride,
 245                   dstx, dsty,
 246                   width, height,
 247                   src, src_stride,
 248                   srcx, srcy);
 249
 250    screen->transfer_unmap(screen, dst);
 251 }
 252
 253
 254 /* Upload data for a particular image.
 255  */
 256 void
 257 st_texture_image_data(struct st_context *st,
 258                       struct pipe_texture *dst,
 259                       GLuint face,
 260                       GLuint level,
 261                       void *src,
 262                       GLuint src_row_stride, GLuint src_image_stride)
 263 {
 264    struct pipe_context *pipe = st->pipe;
 265    struct pipe_screen *screen = pipe->screen;
 266    GLuint depth = dst->depth[level];
 267    GLuint i;
 268    const GLubyte *srcUB = src;
 269    struct pipe_transfer *dst_transfer;
 270
 271    DBG("%s\n", __FUNCTION__);
 272
 273    for (i = 0; i < depth; i++) {
 274       dst_transfer = st_no_flush_get_tex_transfer(st, dst, face, level, i,
 275                                                   PIPE_TRANSFER_WRITE, 0, 0,
 276                                                   dst->width[level],
 277                                                   dst->height[level]);
 278
 279       st_surface_data(pipe, dst_transfer,
 280                       0, 0,                             /* dstx, dsty */
 281                       srcUB,
 282                       src_row_stride,
 283                       0, 0,                             /* source x, y */
 284                       dst->width[level], dst->height[level]);       /* width, height */
 285
 286       screen->tex_transfer_destroy(dst_transfer);
 287
 288       srcUB += src_image_stride;
 289    }
 290 }
 291
 292
 293 /* Copy mipmap image between textures
 294  */
 295 void
 296 st_texture_image_copy(struct pipe_context *pipe,
 297                       struct pipe_texture *dst, GLuint dstLevel,
 298                       struct pipe_texture *src,
 299                       GLuint face)
 300 {
 301    struct pipe_screen *screen = pipe->screen;
 302    GLuint width = dst->width[dstLevel];
 303    GLuint height = dst->height[dstLevel];
 304    GLuint depth = dst->depth[dstLevel];
 305    struct pipe_surface *src_surface;
 306    struct pipe_surface *dst_surface;
 307    GLuint i;
 308
 309    for (i = 0; i < depth; i++) {
 310       GLuint srcLevel;
 311
 312       /* find src texture level of needed size */
 313       for (srcLevel = 0; srcLevel <= src->last_level; srcLevel++) {
 314          if (src->width[srcLevel] == width &&
 315              src->height[srcLevel] == height) {
 316             break;
 317          }
 318       }
 319       assert(src->width[srcLevel] == width);
 320       assert(src->height[srcLevel] == height);
 321
 322 #if 0
 323       {
 324          src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
 325                                                PIPE_BUFFER_USAGE_CPU_READ);
 326          ubyte *map = screen->surface_map(screen, src_surface, PIPE_BUFFER_USAGE_CPU_READ);
 327          map += src_surface->width * src_surface->height * 4 / 2;
 328          printf("%s center pixel: %d %d %d %d (pt %p[%d] -> %p[%d])\n",
 329                 __FUNCTION__,
 330                 map[0], map[1], map[2], map[3],
 331                 src, srcLevel, dst, dstLevel);
 332
 333          screen->surface_unmap(screen, src_surface);
 334          pipe_surface_reference(&src_surface, NULL);
 335       }
 336 #endif
 337
 338       dst_surface = screen->get_tex_surface(screen, dst, face, dstLevel, i,
 339                                             PIPE_BUFFER_USAGE_GPU_WRITE);
 340
 341       src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
 342                                             PIPE_BUFFER_USAGE_GPU_READ);
 343
 344       pipe->surface_copy(pipe,
 345                          dst_surface,
 346                          0, 0, /* destX, Y */
 347                          src_surface,
 348                          0, 0, /* srcX, Y */
 349                          width, height);
 350
 351       pipe_surface_reference(&src_surface, NULL);
 352       pipe_surface_reference(&dst_surface, NULL);
 353    }
 354 }
 355
 356 /** Bind a pipe surface for use as a texture image */
 357 int
 358 st_set_teximage(struct pipe_texture *pt, int target)
 359 {
 360    GET_CURRENT_CONTEXT(ctx);
 361    const GLuint unit = ctx->Texture.CurrentUnit;
 362    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 363    struct gl_texture_object *texObj;
 364    struct gl_texture_image *texImage;
 365    struct st_texture_image *stImage;
 366    int internalFormat;
 367
 368    switch (pt->format) {
 369    case PIPE_FORMAT_A8R8G8B8_UNORM:
 370       internalFormat = GL_RGBA8;
 371       break;
 372    default:
 373       return 0;
 374    };
 375
 376    switch (target) {
 377    case ST_TEXTURE_2D:
 378       target = GL_TEXTURE_2D;
 379       break;
 380    case ST_TEXTURE_RECT:
 381       target = GL_TEXTURE_RECTANGLE_ARB;
 382       break;
 383    default:
 384       return 0;
 385    }
 386
 387    texObj = _mesa_select_tex_object(ctx, texUnit, target);
 388    texImage = _mesa_get_tex_image(ctx, texObj, target, 0);
 389    stImage = st_texture_image(texImage);
 390
 391    _mesa_init_teximage_fields(ctx, GL_TEXTURE_2D, texImage, pt->width[0],
 392                               pt->height[0], 1, 0, internalFormat);
 393
 394    texImage->TexFormat = st_ChooseTextureFormat(ctx, internalFormat, GL_RGBA,
 395                                                 GL_UNSIGNED_BYTE);
 396    _mesa_set_fetch_functions(texImage, 2);
 397
 398    pipe_texture_reference(&stImage->pt, pt);
 399
 400    return 1;
 401 }
 402
 403 /** Redirect rendering into stfb's surface to a texture image */
 404 int
 405 st_bind_teximage(struct st_framebuffer *stfb, uint surfIndex,
 406                  int target, int format, int level)
 407 {
 408    GET_CURRENT_CONTEXT(ctx);
 409    struct st_context *st = ctx->st;
 410    struct pipe_context *pipe = st->pipe;
 411    struct pipe_screen *screen = pipe->screen;
 412    const GLuint unit = ctx->Texture.CurrentUnit;
 413    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
 414    struct gl_texture_object *texObj;
 415    struct gl_texture_image *texImage;
 416    struct st_texture_image *stImage;
 417    struct st_renderbuffer *strb;
 418    GLint face = 0, slice = 0;
 419
 420    assert(surfIndex <= ST_SURFACE_DEPTH);
 421
 422    strb = st_renderbuffer(stfb->Base.Attachment[surfIndex].Renderbuffer);
 423
 424    if (strb->texture_save || strb->surface_save) {
 425       /* Error! */
 426       return 0;
 427    }
 428
 429    if (target == ST_TEXTURE_2D) {
 430       texObj = texUnit->CurrentTex[TEXTURE_2D_INDEX];
 431       texImage = _mesa_get_tex_image(ctx, texObj, GL_TEXTURE_2D, level);
 432       stImage = st_texture_image(texImage);
 433    }
 434    else {
 435       /* unsupported target */
 436       return 0;
 437    }
 438
 439    st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 440
 441    /* save the renderbuffer's surface/texture info */
 442    pipe_texture_reference(&strb->texture_save, strb->texture);
 443    pipe_surface_reference(&strb->surface_save, strb->surface);
 444
 445    /* plug in new surface/texture info */
 446    pipe_texture_reference(&strb->texture, stImage->pt);
 447    strb->surface = screen->get_tex_surface(screen, strb->texture,
 448                                            face, level, slice,
 449                                            (PIPE_BUFFER_USAGE_GPU_READ |
 450                                             PIPE_BUFFER_USAGE_GPU_WRITE));
 451
 452    st->dirty.st |= ST_NEW_FRAMEBUFFER;
 453
 454    return 1;
 455 }
 456
 457
 458 /** Undo surface-to-texture binding */
 459 int
 460 st_release_teximage(struct st_framebuffer *stfb, uint surfIndex,
 461                     int target, int format, int level)
 462 {
 463    GET_CURRENT_CONTEXT(ctx);
 464    struct st_context *st = ctx->st;
 465    struct st_renderbuffer *strb;
 466
 467    assert(surfIndex <= ST_SURFACE_DEPTH);
 468
 469    strb = st_renderbuffer(stfb->Base.Attachment[surfIndex].Renderbuffer);
 470
 471    if (!strb->texture_save || !strb->surface_save) {
 472       /* Error! */
 473       return 0;
 474    }
 475
 476    st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
 477
 478    /* free tex surface, restore original */
 479    pipe_surface_reference(&strb->surface, strb->surface_save);
 480    pipe_texture_reference(&strb->texture, strb->texture_save);
 481
 482    pipe_surface_reference(&strb->surface_save, NULL);
 483    pipe_texture_reference(&strb->texture_save, NULL);
 484
 485    st->dirty.st |= ST_NEW_FRAMEBUFFER;
 486
 487    return 1;
 488 }
 489
 490 void
 491 st_teximage_flush_before_map(struct st_context *st,
 492                              struct pipe_texture *pt,
 493                              unsigned int face,
 494                              unsigned int level,
 495                              enum pipe_transfer_usage usage)
 496 {
 497    struct pipe_context *pipe = st->pipe;
 498    unsigned referenced =
 499       pipe->is_texture_referenced(pipe, pt, face, level);
 500
 501    if (referenced && ((referenced & PIPE_REFERENCED_FOR_WRITE) ||
 502                       usage == PIPE_TRANSFER_WRITE ||
 503                       usage == PIPE_TRANSFER_READ_WRITE))
 504       st_flush(st, PIPE_FLUSH_RENDER_CACHE, NULL);
 505 }