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 "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
  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 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  */
 123 GLboolean
 124 st_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  */
 157 const GLuint *
 158 st_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  */
 173 GLuint
 174 st_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  */
 192 GLubyte *
 193 st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
 194                      GLuint zoffset,
 195                      GLuint flags )
 196 {
 197    struct pipe_screen *screen = st->pipe->screen;
 198    struct pipe_texture *pt = stImage->pt;
 199    DBG("%s \n", __FUNCTION__);
 200
 201    stImage->surface = screen->get_tex_surface(screen, pt, stImage->face,
 202                                               stImage->level, zoffset,
 203                                               flags);
 204
 205    if (stImage->surface)
 206       return screen->surface_map(screen, stImage->surface, flags);
 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_screen *screen = st->pipe->screen;
 217
 218    DBG("%s\n", __FUNCTION__);
 219
 220    screen->surface_unmap(screen, stImage->surface);
 221
 222    pipe_surface_reference(&stImage->surface, NULL);
 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_surface *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->surface_map(screen, dst, PIPE_BUFFER_USAGE_CPU_WRITE);
 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->surface_unmap(screen, dst);
 254 }
 255
 256
 257 /* Upload data for a particular image.
 258  */
 259 void
 260 st_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_surface *dst_surface;
 272
 273    DBG("%s\n", __FUNCTION__);
 274    for (i = 0; i < depth; i++) {
 275       dst_surface = screen->get_tex_surface(screen, dst, face, level, i,
 276                                             PIPE_BUFFER_USAGE_CPU_WRITE);
 277
 278       st_surface_data(pipe, dst_surface,
 279                       0, 0,                             /* dstx, dsty */
 280                       srcUB,
 281                       src_row_stride,
 282                       0, 0,                             /* source x, y */
 283                       dst->width[level], dst->height[level]);       /* width, height */
 284
 285       screen->tex_surface_release(screen, &dst_surface);
 286
 287       srcUB += src_image_stride;
 288    }
 289 }
 290
 291
 292 /* Copy mipmap image between textures
 293  */
 294 void
 295 st_texture_image_copy(struct pipe_context *pipe,
 296                       struct pipe_texture *dst, GLuint dstLevel,
 297                       struct pipe_texture *src,
 298                       GLuint face)
 299 {
 300    struct pipe_screen *screen = pipe->screen;
 301    GLuint width = dst->width[dstLevel];
 302    GLuint height = dst->height[dstLevel];
 303    GLuint depth = dst->depth[dstLevel];
 304    struct pipe_surface *src_surface;
 305    struct pipe_surface *dst_surface;
 306    GLuint i;
 307
 308    for (i = 0; i < depth; i++) {
 309       GLuint srcLevel;
 310
 311       /* find src texture level of needed size */
 312       for (srcLevel = 0; srcLevel <= src->last_level; srcLevel++) {
 313          if (src->width[srcLevel] == width &&
 314              src->height[srcLevel] == height) {
 315             break;
 316          }
 317       }
 318       assert(src->width[srcLevel] == width);
 319       assert(src->height[srcLevel] == height);
 320
 321 #if 0
 322       {
 323          src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
 324                                                PIPE_BUFFER_USAGE_CPU_READ);
 325          ubyte *map = screen->surface_map(screen, src_surface, PIPE_BUFFER_USAGE_CPU_READ);
 326          map += src_surface->width * src_surface->height * 4 / 2;
 327          printf("%s center pixel: %d %d %d %d (pt %p[%d] -> %p[%d])\n",
 328                 __FUNCTION__,
 329                 map[0], map[1], map[2], map[3],
 330                 src, srcLevel, dst, dstLevel);
 331
 332          screen->surface_unmap(screen, src_surface);
 333          pipe_surface_reference(&src_surface, NULL);
 334       }
 335 #endif
 336
 337       dst_surface = screen->get_tex_surface(screen, dst, face, dstLevel, i,
 338                                             PIPE_BUFFER_USAGE_GPU_WRITE);
 339
 340       src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
 341                                             PIPE_BUFFER_USAGE_GPU_READ);
 342
 343       pipe->surface_copy(pipe,
 344                          FALSE,
 345                          dst_surface,
 346                          0, 0, /* destX, Y */
 347                          src_surface,
 348                          0, 0, /* srcX, Y */
 349                          width, height);
 350
 351       screen->tex_surface_release(screen, &src_surface);
 352       screen->tex_surface_release(screen, &dst_surface);
 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->Current2D;
 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 }