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 struct pipe_texture *
  63 st_texture_create(struct st_context *st,
  64                   enum pipe_texture_target target,
  65                   enum pipe_format 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(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->first_level = first_level;
  89    pt->last_level = last_level;
  90    pt->width[0] = width0;
  91    pt->height[0] = height0;
  92    pt->depth[0] = depth0;
  93    pt->compressed = compress_byte ? 1 : 0;
  94    pt->cpp = pt->compressed ? compress_byte : st_sizeof_format(format);
  95    pt->refcount = 1;
  96
  97    st->pipe->texture_create(st->pipe, &pt);
  98
  99    return pt;
 100 }
 101
 102
 103
 104
 105 /* Can the image be pulled into a unified mipmap texture.  This mirrors
 106  * 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(struct pipe_texture *pt,
 112                           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 void
 193 st_texture_image_unmap(struct st_texture_image *stImage)
 194 {
 195    DBG("%s\n", __FUNCTION__);
 196
 197    pipe_surface_unmap(stImage->surface);
 198
 199    pipe_surface_reference(&stImage->surface, NULL);
 200 }
 201
 202
 203
 204 /* Upload data for a particular image.
 205  */
 206 void
 207 st_texture_image_data(struct pipe_context *pipe,
 208                       struct pipe_texture *dst,
 209                       GLuint face,
 210                       GLuint level,
 211                       void *src,
 212                       GLuint src_row_pitch, GLuint src_image_pitch)
 213 {
 214    GLuint depth = dst->depth[level];
 215    GLuint i;
 216    GLuint height = 0;
 217    const GLubyte *srcUB = src;
 218    struct pipe_surface *dst_surface;
 219
 220    DBG("%s\n", __FUNCTION__);
 221    for (i = 0; i < depth; i++) {
 222       height = dst->height[level];
 223       if(dst->compressed)
 224          height /= 4;
 225
 226       dst_surface = pipe->get_tex_surface(pipe, dst, face, level, i);
 227
 228       pipe->surface_data(pipe, dst_surface,
 229                          0, 0,                             /* dstx, dsty */
 230                          srcUB,
 231                          src_row_pitch,
 232                          0, 0,                             /* source x, y */
 233                          dst->width[level], height); /* width, height */
 234
 235       pipe_surface_reference(&dst_surface, NULL);
 236
 237       srcUB += src_image_pitch * dst->cpp;
 238    }
 239 }
 240
 241 /* Copy mipmap image between textures
 242  */
 243 void
 244 st_texture_image_copy(struct pipe_context *pipe,
 245                          struct pipe_texture *dst,
 246                          GLuint face, GLuint level,
 247                          struct pipe_texture *src)
 248 {
 249    GLuint width = src->width[level];
 250    GLuint height = src->height[level];
 251    GLuint depth = src->depth[level];
 252    struct pipe_surface *src_surface;
 253    struct pipe_surface *dst_surface;
 254    GLuint i;
 255
 256    if (dst->compressed)
 257       height /= 4;
 258    for (i = 0; i < depth; i++) {
 259       dst_surface = pipe->get_tex_surface(pipe, dst, face, level, i);
 260       src_surface = pipe->get_tex_surface(pipe, src, face, level, i);
 261
 262       pipe->surface_copy(pipe,
 263                          dst_surface,
 264                          0, 0, /* destX, Y */
 265                          src_surface,
 266                          0, 0, /* srcX, Y */
 267                          width, height);
 268
 269       pipe_surface_reference(&dst_surface, NULL);
 270       pipe_surface_reference(&src_surface, NULL);
 271    }
 272
 273 }