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_texture.h"
  31 #include "main/enums.h"
  32
  33 #undef Elements  /* fix re-defined macro warning */
  34
  35 #include "pipe/p_state.h"
  36 #include "pipe/p_context.h"
  37 #include "pipe/p_defines.h"
  38 #include "pipe/p_inlines.h"
  39 #include "pipe/p_util.h"
  40 #include "pipe/p_inlines.h"
  41
  42
  43 #define DBG if(0) printf
  44
  45 #if 0
  46 static GLenum
  47 target_to_target(GLenum target)
  48 {
  49    switch (target) {
  50    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
  51    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
  52    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
  53    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
  54    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
  55    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
  56       return GL_TEXTURE_CUBE_MAP_ARB;
  57    default:
  58       return target;
  59    }
  60 }
  61 #endif
  62
  63
  64 /**
  65  * Allocate a new pipe_texture object
  66  * width0, height0, depth0 are the dimensions of the level 0 image
  67  * (the highest resolution).  last_level indicates how many mipmap levels
  68  * to allocate storage for.  For non-mipmapped textures, this will be zero.
  69  */
  70 struct pipe_texture *
  71 st_texture_create(struct st_context *st,
  72                   enum pipe_texture_target target,
  73                   enum pipe_format format,
  74                   GLuint last_level,
  75                   GLuint width0,
  76                   GLuint height0,
  77                   GLuint depth0,
  78                   GLuint compress_byte,
  79                   GLuint usage )
  80 {
  81    struct pipe_texture pt, *newtex;
  82    struct pipe_screen *screen = st->pipe->screen;
  83
  84    assert(target <= PIPE_TEXTURE_CUBE);
  85
  86    DBG("%s target %s format %s last_level %d\n", __FUNCTION__,
  87        _mesa_lookup_enum_by_nr(target),
  88        _mesa_lookup_enum_by_nr(format), last_level);
  89
  90    assert(format);
  91    assert(screen->is_format_supported(screen, format, target,
  92                                       PIPE_TEXTURE_USAGE_SAMPLER, 0));
  93
  94    memset(&pt, 0, sizeof(pt));
  95    pt.target = target;
  96    pt.format = format;
  97    pt.last_level = last_level;
  98    pt.width[0] = width0;
  99    pt.height[0] = height0;
 100    pt.depth[0] = depth0;
 101    pt.compressed = compress_byte ? 1 : 0;
 102    pf_get_block(format, &pt.block);
 103    pt.tex_usage = usage;
 104
 105    newtex = screen->texture_create(screen, &pt);
 106
 107    assert(!newtex || newtex->refcount == 1);
 108
 109    return newtex;
 110 }
 111
 112
 113 /**
 114  * Check if a texture image be pulled into a unified mipmap texture.
 115  * This mirrors the completeness test in a lot of ways.
 116  *
 117  * Not sure whether I want to pass gl_texture_image here.
 118  */
 119 GLboolean
 120 st_texture_match_image(const struct pipe_texture *pt,
 121                        const struct gl_texture_image *image,
 122                        GLuint face, GLuint level)
 123 {
 124    /* Images with borders are never pulled into mipmap textures.
 125     */
 126    if (image->Border)
 127       return GL_FALSE;
 128
 129    if (st_mesa_format_to_pipe_format(image->TexFormat->MesaFormat) != pt->format ||
 130        image->IsCompressed != pt->compressed)
 131       return GL_FALSE;
 132
 133    /* Test image dimensions against the base level image adjusted for
 134     * minification.  This will also catch images not present in the
 135     * texture, changed targets, etc.
 136     */
 137    if (image->Width != pt->width[level] ||
 138        image->Height != pt->height[level] ||
 139        image->Depth != pt->depth[level])
 140       return GL_FALSE;
 141
 142    return GL_TRUE;
 143 }
 144
 145
 146 #if 000
 147 /* Although we use the image_offset[] array to store relative offsets
 148  * to cube faces, Mesa doesn't know anything about this and expects
 149  * each cube face to be treated as a separate image.
 150  *
 151  * These functions present that view to mesa:
 152  */
 153 const GLuint *
 154 st_texture_depth_offsets(struct pipe_texture *pt, GLuint level)
 155 {
 156    static const GLuint zero = 0;
 157
 158    if (pt->target != PIPE_TEXTURE_3D || pt->level[level].nr_images == 1)
 159       return &zero;
 160    else
 161       return pt->level[level].image_offset;
 162 }
 163
 164
 165 /**
 166  * Return the offset to the given mipmap texture image within the
 167  * texture memory buffer, in bytes.
 168  */
 169 GLuint
 170 st_texture_image_offset(const struct pipe_texture * pt,
 171                         GLuint face, GLuint level)
 172 {
 173    if (pt->target == PIPE_TEXTURE_CUBE)
 174       return (pt->level[level].level_offset +
 175               pt->level[level].image_offset[face] * pt->cpp);
 176    else
 177       return pt->level[level].level_offset;
 178 }
 179 #endif
 180
 181
 182 /**
 183  * Map a teximage in a mipmap texture.
 184  * \param row_stride  returns row stride in bytes
 185  * \param image_stride  returns image stride in bytes (for 3D textures).
 186  * \return address of mapping
 187  */
 188 GLubyte *
 189 st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
 190                      GLuint zoffset,
 191                      GLuint flags )
 192 {
 193    struct pipe_screen *screen = st->pipe->screen;
 194    struct pipe_texture *pt = stImage->pt;
 195    DBG("%s \n", __FUNCTION__);
 196
 197    stImage->surface = screen->get_tex_surface(screen, pt, stImage->face,
 198                                               stImage->level, zoffset,
 199                                               flags);
 200
 201    if (stImage->surface)
 202       return screen->surface_map(screen, stImage->surface, flags);
 203    else
 204       return NULL;
 205 }
 206
 207
 208 void
 209 st_texture_image_unmap(struct st_context *st,
 210                        struct st_texture_image *stImage)
 211 {
 212    struct pipe_screen *screen = st->pipe->screen;
 213
 214    DBG("%s\n", __FUNCTION__);
 215
 216    screen->surface_unmap(screen, stImage->surface);
 217
 218    pipe_surface_reference(&stImage->surface, NULL);
 219 }
 220
 221
 222
 223 /**
 224  * Upload data to a rectangular sub-region.  Lots of choices how to do this:
 225  *
 226  * - memcpy by span to current destination
 227  * - upload data as new buffer and blit
 228  *
 229  * Currently always memcpy.
 230  */
 231 static void
 232 st_surface_data(struct pipe_context *pipe,
 233                 struct pipe_surface *dst,
 234                 unsigned dstx, unsigned dsty,
 235                 const void *src, unsigned src_stride,
 236                 unsigned srcx, unsigned srcy, unsigned width, unsigned height)
 237 {
 238    struct pipe_screen *screen = pipe->screen;
 239    void *map = screen->surface_map(screen, dst, PIPE_BUFFER_USAGE_CPU_WRITE);
 240
 241    pipe_copy_rect(map,
 242                   &dst->block,
 243                   dst->stride,
 244                   dstx, dsty,
 245                   width, height,
 246                   src, src_stride,
 247                   srcx, srcy);
 248
 249    screen->surface_unmap(screen, dst);
 250 }
 251
 252
 253 /* Upload data for a particular image.
 254  */
 255 void
 256 st_texture_image_data(struct pipe_context *pipe,
 257                       struct pipe_texture *dst,
 258                       GLuint face,
 259                       GLuint level,
 260                       void *src,
 261                       GLuint src_row_stride, GLuint src_image_stride)
 262 {
 263    struct pipe_screen *screen = pipe->screen;
 264    GLuint depth = dst->depth[level];
 265    GLuint i;
 266    const GLubyte *srcUB = src;
 267    struct pipe_surface *dst_surface;
 268
 269    DBG("%s\n", __FUNCTION__);
 270    for (i = 0; i < depth; i++) {
 271       dst_surface = screen->get_tex_surface(screen, dst, face, level, i,
 272                                             PIPE_BUFFER_USAGE_CPU_WRITE);
 273
 274       st_surface_data(pipe, dst_surface,
 275                       0, 0,                             /* dstx, dsty */
 276                       srcUB,
 277                       src_row_stride,
 278                       0, 0,                             /* source x, y */
 279                       dst->width[level], dst->height[level]);       /* width, height */
 280
 281       screen->tex_surface_release(screen, &dst_surface);
 282
 283       srcUB += src_image_stride;
 284    }
 285 }
 286
 287
 288 /* Copy mipmap image between textures
 289  */
 290 void
 291 st_texture_image_copy(struct pipe_context *pipe,
 292                       struct pipe_texture *dst, GLuint dstLevel,
 293                       struct pipe_texture *src,
 294                       GLuint face)
 295 {
 296    struct pipe_screen *screen = pipe->screen;
 297    GLuint width = dst->width[dstLevel];
 298    GLuint height = dst->height[dstLevel];
 299    GLuint depth = dst->depth[dstLevel];
 300    struct pipe_surface *src_surface;
 301    struct pipe_surface *dst_surface;
 302    GLuint i;
 303
 304    /* XXX this is a hack */
 305    const GLuint copyHeight = dst->compressed ? height / 4 : height;
 306
 307    for (i = 0; i < depth; i++) {
 308       GLuint srcLevel;
 309
 310       /* find src texture level of needed size */
 311       for (srcLevel = 0; srcLevel <= src->last_level; srcLevel++) {
 312          if (src->width[srcLevel] == width &&
 313              src->height[srcLevel] == height) {
 314             break;
 315          }
 316       }
 317       assert(src->width[srcLevel] == width);
 318       assert(src->height[srcLevel] == height);
 319
 320 #if 0
 321       {
 322          src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
 323                                                PIPE_BUFFER_USAGE_CPU_READ);
 324          ubyte *map = screen->surface_map(screen, src_surface, PIPE_BUFFER_USAGE_CPU_READ);
 325          map += src_surface->width * src_surface->height * 4 / 2;
 326          printf("%s center pixel: %d %d %d %d (pt %p[%d] -> %p[%d])\n",
 327                 __FUNCTION__,
 328                 map[0], map[1], map[2], map[3],
 329                 src, srcLevel, dst, dstLevel);
 330
 331          screen->surface_unmap(screen, src_surface);
 332          pipe_surface_reference(&src_surface, NULL);
 333       }
 334 #endif
 335
 336       dst_surface = screen->get_tex_surface(screen, dst, face, dstLevel, i,
 337                                             PIPE_BUFFER_USAGE_GPU_WRITE);
 338
 339       src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
 340                                             PIPE_BUFFER_USAGE_GPU_READ);
 341
 342       pipe->surface_copy(pipe,
 343                          FALSE,
 344                          dst_surface,
 345                          0, 0, /* destX, Y */
 346                          src_surface,
 347                          0, 0, /* srcX, Y */
 348                          width, copyHeight);
 349
 350       screen->tex_surface_release(screen, &src_surface);
 351       screen->tex_surface_release(screen, &dst_surface);
 352    }
 353 }