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 #include "pipe/p_winsys.h"
  42
  43
  44 #define DBG if(0) printf
  45
  46 #if 0
  47 static GLenum
  48 target_to_target(GLenum target)
  49 {
  50    switch (target) {
  51    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
  52    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
  53    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
  54    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
  55    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
  56    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
  57       return GL_TEXTURE_CUBE_MAP_ARB;
  58    default:
  59       return target;
  60    }
  61 }
  62 #endif
  63
  64
  65 /**
  66  * Allocate a new pipe_texture object
  67  * width0, height0, depth0 are the dimensions of the level 0 image
  68  * (the highest resolution).  last_level indicates how many mipmap levels
  69  * to allocate storage for.  For non-mipmapped textures, this will be zero.
  70  */
  71 struct pipe_texture *
  72 st_texture_create(struct st_context *st,
  73                   enum pipe_texture_target target,
  74                   enum pipe_format format,
  75                   GLuint last_level,
  76                   GLuint width0,
  77                   GLuint height0,
  78                   GLuint depth0,
  79                   GLuint compress_byte)
  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
 103    newtex = screen->texture_create(screen, &pt);
 104
 105    assert(!newtex || newtex->refcount == 1);
 106
 107    return newtex;
 108 }
 109
 110
 111 /**
 112  * Check if a texture image be pulled into a unified mipmap texture.
 113  * This mirrors the completeness test in a lot of ways.
 114  *
 115  * Not sure whether I want to pass gl_texture_image here.
 116  */
 117 GLboolean
 118 st_texture_match_image(const struct pipe_texture *pt,
 119                        const struct gl_texture_image *image,
 120                        GLuint face, GLuint level)
 121 {
 122    /* Images with borders are never pulled into mipmap textures.
 123     */
 124    if (image->Border)
 125       return GL_FALSE;
 126
 127    if (st_mesa_format_to_pipe_format(image->TexFormat->MesaFormat) != pt->format ||
 128        image->IsCompressed != pt->compressed)
 129       return GL_FALSE;
 130
 131    /* Test image dimensions against the base level image adjusted for
 132     * minification.  This will also catch images not present in the
 133     * texture, changed targets, etc.
 134     */
 135    if (image->Width != pt->width[level] ||
 136        image->Height != pt->height[level] ||
 137        image->Depth != pt->depth[level])
 138       return GL_FALSE;
 139
 140    return GL_TRUE;
 141 }
 142
 143
 144 #if 000
 145 /* Although we use the image_offset[] array to store relative offsets
 146  * to cube faces, Mesa doesn't know anything about this and expects
 147  * each cube face to be treated as a separate image.
 148  *
 149  * These functions present that view to mesa:
 150  */
 151 const GLuint *
 152 st_texture_depth_offsets(struct pipe_texture *pt, GLuint level)
 153 {
 154    static const GLuint zero = 0;
 155
 156    if (pt->target != PIPE_TEXTURE_3D || pt->level[level].nr_images == 1)
 157       return &zero;
 158    else
 159       return pt->level[level].image_offset;
 160 }
 161
 162
 163 /**
 164  * Return the offset to the given mipmap texture image within the
 165  * texture memory buffer, in bytes.
 166  */
 167 GLuint
 168 st_texture_image_offset(const struct pipe_texture * pt,
 169                         GLuint face, GLuint level)
 170 {
 171    if (pt->target == PIPE_TEXTURE_CUBE)
 172       return (pt->level[level].level_offset +
 173               pt->level[level].image_offset[face] * pt->cpp);
 174    else
 175       return pt->level[level].level_offset;
 176 }
 177 #endif
 178
 179
 180 /**
 181  * Map a teximage in a mipmap texture.
 182  * \param row_stride  returns row stride in bytes
 183  * \param image_stride  returns image stride in bytes (for 3D textures).
 184  * \return address of mapping
 185  */
 186 GLubyte *
 187 st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
 188                      GLuint zoffset)
 189 {
 190    struct pipe_screen *screen = st->pipe->screen;
 191    struct pipe_texture *pt = stImage->pt;
 192    DBG("%s \n", __FUNCTION__);
 193
 194    stImage->surface = screen->get_tex_surface(screen, pt, stImage->face,
 195                                               stImage->level, zoffset);
 196
 197    return pipe_surface_map(stImage->surface);
 198 }
 199
 200
 201 void
 202 st_texture_image_unmap(struct st_texture_image *stImage)
 203 {
 204    DBG("%s\n", __FUNCTION__);
 205
 206    pipe_surface_unmap(stImage->surface);
 207
 208    pipe_surface_reference(&stImage->surface, NULL);
 209 }
 210
 211
 212
 213 /**
 214  * Upload data to a rectangular sub-region.  Lots of choices how to do this:
 215  *
 216  * - memcpy by span to current destination
 217  * - upload data as new buffer and blit
 218  *
 219  * Currently always memcpy.
 220  */
 221 static void
 222 st_surface_data(struct pipe_context *pipe,
 223                 struct pipe_surface *dst,
 224                 unsigned dstx, unsigned dsty,
 225                 const void *src, unsigned src_pitch,
 226                 unsigned srcx, unsigned srcy, unsigned width, unsigned height)
 227 {
 228    pipe_copy_rect(pipe_surface_map(dst),
 229                   dst->cpp,
 230                   dst->pitch,
 231                   dstx, dsty, width, height, src, src_pitch, srcx, srcy);
 232
 233    pipe_surface_unmap(dst);
 234 }
 235
 236
 237 /* Upload data for a particular image.
 238  */
 239 void
 240 st_texture_image_data(struct pipe_context *pipe,
 241                       struct pipe_texture *dst,
 242                       GLuint face,
 243                       GLuint level,
 244                       void *src,
 245                       GLuint src_row_pitch, GLuint src_image_pitch)
 246 {
 247    struct pipe_screen *screen = pipe->screen;
 248    GLuint depth = dst->depth[level];
 249    GLuint i;
 250    GLuint height = 0;
 251    const GLubyte *srcUB = src;
 252    struct pipe_surface *dst_surface;
 253
 254    DBG("%s\n", __FUNCTION__);
 255    for (i = 0; i < depth; i++) {
 256       height = dst->height[level];
 257       if(dst->compressed)
 258          height /= 4;
 259
 260       dst_surface = screen->get_tex_surface(screen, dst, face, level, i);
 261
 262       st_surface_data(pipe, dst_surface,
 263                       0, 0,                             /* dstx, dsty */
 264                       srcUB,
 265                       src_row_pitch,
 266                       0, 0,                             /* source x, y */
 267                       dst->width[level], height);       /* width, height */
 268
 269       pipe_surface_reference(&dst_surface, NULL);
 270
 271       srcUB += src_image_pitch * dst->cpp;
 272    }
 273 }
 274
 275
 276 /* Copy mipmap image between textures
 277  */
 278 void
 279 st_texture_image_copy(struct pipe_context *pipe,
 280                       struct pipe_texture *dst, GLuint dstLevel,
 281                       struct pipe_texture *src,
 282                       GLuint face)
 283 {
 284    struct pipe_screen *screen = pipe->screen;
 285    GLuint width = dst->width[dstLevel];
 286    GLuint height = dst->height[dstLevel];
 287    GLuint depth = dst->depth[dstLevel];
 288    struct pipe_surface *src_surface;
 289    struct pipe_surface *dst_surface;
 290    GLuint i;
 291
 292    /* XXX this is a hack */
 293    if (dst->compressed)
 294       height /= 4;
 295
 296    for (i = 0; i < depth; i++) {
 297       GLuint srcLevel;
 298
 299       /* find src texture level of needed size */
 300       for (srcLevel = 0; srcLevel <= src->last_level; srcLevel++) {
 301          if (src->width[srcLevel] == width &&
 302              src->height[srcLevel] == height) {
 303             break;
 304          }
 305       }
 306       assert(src->width[srcLevel] == width);
 307       assert(src->height[srcLevel] == height);
 308
 309       dst_surface = screen->get_tex_surface(screen, dst, face, dstLevel, i);
 310       src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i);
 311
 312       pipe->surface_copy(pipe,
 313                          FALSE,
 314                          dst_surface,
 315                          0, 0, /* destX, Y */
 316                          src_surface,
 317                          0, 0, /* srcX, Y */
 318                          width, height);
 319
 320       pipe_surface_reference(&dst_surface, NULL);
 321       pipe_surface_reference(&src_surface, NULL);
 322    }
 323 }