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, *newtex;
  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
  99    newtex = st->pipe->texture_create(st->pipe, &pt);
 100
 101    assert(!newtex || newtex->refcount == 1);
 102
 103    return newtex;
 104 }
 105
 106
 107 /**
 108  * Check if a texture image be pulled into a unified mipmap texture.
 109  * This mirrors the completeness test in a lot of ways.
 110  *
 111  * Not sure whether I want to pass gl_texture_image here.
 112  */
 113 GLboolean
 114 st_texture_match_image(const struct pipe_texture *pt,
 115                        const struct gl_texture_image *image,
 116                        GLuint face, GLuint level)
 117 {
 118    /* Images with borders are never pulled into mipmap textures.
 119     */
 120    if (image->Border)
 121       return GL_FALSE;
 122
 123    if (st_mesa_format_to_pipe_format(image->TexFormat->MesaFormat) != pt->format ||
 124        image->IsCompressed != pt->compressed)
 125       return GL_FALSE;
 126
 127    /* Test image dimensions against the base level image adjusted for
 128     * minification.  This will also catch images not present in the
 129     * texture, changed targets, etc.
 130     */
 131    if (image->Width != pt->width[level] ||
 132        image->Height != pt->height[level] ||
 133        image->Depth != pt->depth[level])
 134       return GL_FALSE;
 135
 136    return GL_TRUE;
 137 }
 138
 139
 140 #if 000
 141 /* Although we use the image_offset[] array to store relative offsets
 142  * to cube faces, Mesa doesn't know anything about this and expects
 143  * each cube face to be treated as a separate image.
 144  *
 145  * These functions present that view to mesa:
 146  */
 147 const GLuint *
 148 st_texture_depth_offsets(struct pipe_texture *pt, GLuint level)
 149 {
 150    static const GLuint zero = 0;
 151
 152    if (pt->target != PIPE_TEXTURE_3D || pt->level[level].nr_images == 1)
 153       return &zero;
 154    else
 155       return pt->level[level].image_offset;
 156 }
 157
 158
 159 /**
 160  * Return the offset to the given mipmap texture image within the
 161  * texture memory buffer, in bytes.
 162  */
 163 GLuint
 164 st_texture_image_offset(const struct pipe_texture * pt,
 165                         GLuint face, GLuint level)
 166 {
 167    if (pt->target == PIPE_TEXTURE_CUBE)
 168       return (pt->level[level].level_offset +
 169               pt->level[level].image_offset[face] * pt->cpp);
 170    else
 171       return pt->level[level].level_offset;
 172 }
 173 #endif
 174
 175
 176 /**
 177  * Map a teximage in a mipmap texture.
 178  * \param row_stride  returns row stride in bytes
 179  * \param image_stride  returns image stride in bytes (for 3D textures).
 180  * \return address of mapping
 181  */
 182 GLubyte *
 183 st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
 184                      GLuint zoffset)
 185 {
 186    struct pipe_texture *pt = stImage->pt;
 187    DBG("%s \n", __FUNCTION__);
 188
 189    stImage->surface = st->pipe->get_tex_surface(st->pipe, pt, stImage->face,
 190                                                 stImage->level, zoffset);
 191
 192    return pipe_surface_map(stImage->surface);
 193 }
 194
 195
 196 void
 197 st_texture_image_unmap(struct st_texture_image *stImage)
 198 {
 199    DBG("%s\n", __FUNCTION__);
 200
 201    pipe_surface_unmap(stImage->surface);
 202
 203    pipe_surface_reference(&stImage->surface, NULL);
 204 }
 205
 206
 207
 208 /**
 209  * Upload data to a rectangular sub-region.  Lots of choices how to do this:
 210  *
 211  * - memcpy by span to current destination
 212  * - upload data as new buffer and blit
 213  *
 214  * Currently always memcpy.
 215  */
 216 static void
 217 st_surface_data(struct pipe_context *pipe,
 218                 struct pipe_surface *dst,
 219                 unsigned dstx, unsigned dsty,
 220                 const void *src, unsigned src_pitch,
 221                 unsigned srcx, unsigned srcy, unsigned width, unsigned height)
 222 {
 223    pipe_copy_rect(pipe_surface_map(dst),
 224                   dst->cpp,
 225                   dst->pitch,
 226                   dstx, dsty, width, height, src, src_pitch, srcx, srcy);
 227
 228    pipe_surface_unmap(dst);
 229 }
 230
 231
 232 /* Upload data for a particular image.
 233  */
 234 void
 235 st_texture_image_data(struct pipe_context *pipe,
 236                       struct pipe_texture *dst,
 237                       GLuint face,
 238                       GLuint level,
 239                       void *src,
 240                       GLuint src_row_pitch, GLuint src_image_pitch)
 241 {
 242    GLuint depth = dst->depth[level];
 243    GLuint i;
 244    GLuint height = 0;
 245    const GLubyte *srcUB = src;
 246    struct pipe_surface *dst_surface;
 247
 248    DBG("%s\n", __FUNCTION__);
 249    for (i = 0; i < depth; i++) {
 250       height = dst->height[level];
 251       if(dst->compressed)
 252          height /= 4;
 253
 254       dst_surface = pipe->get_tex_surface(pipe, dst, face, level, i);
 255
 256       st_surface_data(pipe, dst_surface,
 257                       0, 0,                             /* dstx, dsty */
 258                       srcUB,
 259                       src_row_pitch,
 260                       0, 0,                             /* source x, y */
 261                       dst->width[level], height);       /* width, height */
 262
 263       pipe_surface_reference(&dst_surface, NULL);
 264
 265       srcUB += src_image_pitch * dst->cpp;
 266    }
 267 }
 268
 269
 270 /* Copy mipmap image between textures
 271  */
 272 void
 273 st_texture_image_copy(struct pipe_context *pipe,
 274                       struct pipe_texture *dst, GLuint dstLevel,
 275                       struct pipe_texture *src,
 276                       GLuint face)
 277 {
 278    GLuint width = dst->width[dstLevel];
 279    GLuint height = dst->height[dstLevel];
 280    GLuint depth = dst->depth[dstLevel];
 281    struct pipe_surface *src_surface;
 282    struct pipe_surface *dst_surface;
 283    GLuint i;
 284
 285    /* XXX this is a hack */
 286    if (dst->compressed)
 287       height /= 4;
 288
 289    for (i = 0; i < depth; i++) {
 290       GLuint srcLevel;
 291
 292       /* find src texture level of needed size */
 293       for (srcLevel = 0; srcLevel <= src->last_level; srcLevel++) {
 294          if (src->width[srcLevel] == width &&
 295              src->height[srcLevel] == height) {
 296             break;
 297          }
 298       }
 299       assert(src->width[srcLevel] == width);
 300       assert(src->height[srcLevel] == height);
 301
 302       dst_surface = pipe->get_tex_surface(pipe, dst, face, dstLevel, i);
 303       src_surface = pipe->get_tex_surface(pipe, src, face, srcLevel, i);
 304
 305       pipe->surface_copy(pipe,
 306                          FALSE,
 307                          dst_surface,
 308                          0, 0, /* destX, Y */
 309                          src_surface,
 310                          0, 0, /* srcX, Y */
 311                          width, height);
 312
 313       pipe_surface_reference(&dst_surface, NULL);
 314       pipe_surface_reference(&src_surface, NULL);
 315    }
 316 }