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 "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, PIPE_TEXTURE));
  92
  93    memset(&pt, 0, sizeof(pt));
  94    pt.target = target;
  95    pt.format = format;
  96    pt.last_level = last_level;
  97    pt.width[0] = width0;
  98    pt.height[0] = height0;
  99    pt.depth[0] = depth0;
 100    pt.compressed = compress_byte ? 1 : 0;
 101    pt.cpp = pt.compressed ? compress_byte : st_sizeof_format(format);
 102    pt.tex_usage = usage;
 103
 104    newtex = screen->texture_create(screen, &pt);
 105
 106    assert(!newtex || newtex->refcount == 1);
 107
 108    return newtex;
 109 }
 110
 111
 112 /**
 113  * Check if a texture image be pulled into a unified mipmap texture.
 114  * This mirrors the completeness test in a lot of ways.
 115  *
 116  * Not sure whether I want to pass gl_texture_image here.
 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    if (st_mesa_format_to_pipe_format(image->TexFormat->MesaFormat) != pt->format ||
 129        image->IsCompressed != pt->compressed)
 130       return GL_FALSE;
 131
 132    /* Test image dimensions against the base level image adjusted for
 133     * minification.  This will also catch images not present in the
 134     * texture, changed targets, etc.
 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,
 190                      GLuint flags )
 191 {
 192    struct pipe_screen *screen = st->pipe->screen;
 193    struct pipe_texture *pt = stImage->pt;
 194    DBG("%s \n", __FUNCTION__);
 195
 196    stImage->surface = screen->get_tex_surface(screen, pt, stImage->face,
 197                                               stImage->level, zoffset,
 198                                               flags);
 199
 200    if (stImage->surface)
 201       return screen->surface_map(screen, stImage->surface, flags);
 202    else
 203       return NULL;
 204 }
 205
 206
 207 void
 208 st_texture_image_unmap(struct st_context *st,
 209                        struct st_texture_image *stImage)
 210 {
 211    struct pipe_screen *screen = st->pipe->screen;
 212
 213    DBG("%s\n", __FUNCTION__);
 214
 215    screen->surface_unmap(screen, stImage->surface);
 216
 217    pipe_surface_reference(&stImage->surface, NULL);
 218 }
 219
 220
 221
 222 /**
 223  * Upload data to a rectangular sub-region.  Lots of choices how to do this:
 224  *
 225  * - memcpy by span to current destination
 226  * - upload data as new buffer and blit
 227  *
 228  * Currently always memcpy.
 229  */
 230 static void
 231 st_surface_data(struct pipe_context *pipe,
 232                 struct pipe_surface *dst,
 233                 unsigned dstx, unsigned dsty,
 234                 const void *src, unsigned src_pitch,
 235                 unsigned srcx, unsigned srcy, unsigned width, unsigned height)
 236 {
 237    struct pipe_screen *screen = pipe->screen;
 238    void *map = screen->surface_map(screen, dst, PIPE_BUFFER_USAGE_CPU_WRITE);
 239
 240    pipe_copy_rect(map,
 241                   dst->cpp,
 242                   dst->pitch,
 243                   dstx, dsty, width, height, src, src_pitch, srcx, srcy);
 244
 245    screen->surface_unmap(screen, dst);
 246 }
 247
 248
 249 /* Upload data for a particular image.
 250  */
 251 void
 252 st_texture_image_data(struct pipe_context *pipe,
 253                       struct pipe_texture *dst,
 254                       GLuint face,
 255                       GLuint level,
 256                       void *src,
 257                       GLuint src_row_pitch, GLuint src_image_pitch)
 258 {
 259    struct pipe_screen *screen = pipe->screen;
 260    GLuint depth = dst->depth[level];
 261    GLuint i;
 262    GLuint height = 0;
 263    const GLubyte *srcUB = src;
 264    struct pipe_surface *dst_surface;
 265
 266    DBG("%s\n", __FUNCTION__);
 267    for (i = 0; i < depth; i++) {
 268       height = dst->height[level];
 269       if(dst->compressed)
 270          height /= 4;
 271
 272       dst_surface = screen->get_tex_surface(screen, dst, face, level, i,
 273                                             PIPE_BUFFER_USAGE_CPU_WRITE);
 274
 275       st_surface_data(pipe, dst_surface,
 276                       0, 0,                             /* dstx, dsty */
 277                       srcUB,
 278                       src_row_pitch,
 279                       0, 0,                             /* source x, y */
 280                       dst->width[level], height);       /* width, height */
 281
 282       screen->tex_surface_release(screen, &dst_surface);
 283
 284       srcUB += src_image_pitch * dst->cpp;
 285    }
 286 }
 287
 288
 289 /* Copy mipmap image between textures
 290  */
 291 void
 292 st_texture_image_copy(struct pipe_context *pipe,
 293                       struct pipe_texture *dst, GLuint dstLevel,
 294                       struct pipe_texture *src,
 295                       GLuint face)
 296 {
 297    struct pipe_screen *screen = pipe->screen;
 298    GLuint width = dst->width[dstLevel];
 299    GLuint height = dst->height[dstLevel];
 300    GLuint depth = dst->depth[dstLevel];
 301    struct pipe_surface *src_surface;
 302    struct pipe_surface *dst_surface;
 303    GLuint i;
 304
 305    /* XXX this is a hack */
 306    const GLuint copyHeight = dst->compressed ? height / 4 : height;
 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, copyHeight);
 350
 351       screen->tex_surface_release(screen, &src_surface);
 352       screen->tex_surface_release(screen, &dst_surface);
 353    }
 354 }