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