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