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
  42
  43 #define DBG if(0) printf
  44
  45 #if 0
  46 static GLenum
  47 target_to_target(GLenum target)
  48 {
  49    switch (target) {
  50    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
  51    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
  52    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
  53    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
  54    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
  55    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
  56       return GL_TEXTURE_CUBE_MAP_ARB;
  57    default:
  58       return target;
  59    }
  60 }
  61 #endif
  62
  63
  64 /**
  65  * Allocate a new pipe_texture object
  66  * width0, height0, depth0 are the dimensions of the level 0 image
  67  * (the highest resolution).  last_level indicates how many mipmap levels
  68  * to allocate storage for.  For non-mipmapped textures, this will be zero.
  69  */
  70 struct pipe_texture *
  71 st_texture_create(struct st_context *st,
  72                   enum pipe_texture_target target,
  73                   enum pipe_format format,
  74                   GLuint last_level,
  75                   GLuint width0,
  76                   GLuint height0,
  77                   GLuint depth0,
  78                   GLuint compress_byte)
  79 {
  80    struct pipe_texture pt, *newtex;
  81    struct pipe_screen *screen = st->pipe->screen;
  82
  83    assert(target <= PIPE_TEXTURE_CUBE);
  84
  85    DBG("%s target %s format %s last_level %d\n", __FUNCTION__,
  86        _mesa_lookup_enum_by_nr(target),
  87        _mesa_lookup_enum_by_nr(format), last_level);
  88
  89    assert(format);
  90    assert(screen->is_format_supported(screen, format, PIPE_TEXTURE));
  91
  92    memset(&pt, 0, sizeof(pt));
  93    pt.target = target;
  94    pt.format = format;
  95    pt.last_level = last_level;
  96    pt.width[0] = width0;
  97    pt.height[0] = height0;
  98    pt.depth[0] = depth0;
  99    pt.compressed = compress_byte ? 1 : 0;
 100    pt.cpp = pt.compressed ? compress_byte : st_sizeof_format(format);
 101
 102    newtex = screen->texture_create(screen, &pt);
 103
 104    assert(!newtex || newtex->refcount == 1);
 105
 106    return newtex;
 107 }
 108
 109
 110 /**
 111  * Check if a texture image be pulled into a unified mipmap texture.
 112  * This mirrors the completeness test in a lot of ways.
 113  *
 114  * Not sure whether I want to pass gl_texture_image here.
 115  */
 116 GLboolean
 117 st_texture_match_image(const struct pipe_texture *pt,
 118                        const struct gl_texture_image *image,
 119                        GLuint face, GLuint level)
 120 {
 121    /* Images with borders are never pulled into mipmap textures.
 122     */
 123    if (image->Border)
 124       return GL_FALSE;
 125
 126    if (st_mesa_format_to_pipe_format(image->TexFormat->MesaFormat) != pt->format ||
 127        image->IsCompressed != pt->compressed)
 128       return GL_FALSE;
 129
 130    /* Test image dimensions against the base level image adjusted for
 131     * minification.  This will also catch images not present in the
 132     * texture, changed targets, etc.
 133     */
 134    if (image->Width != pt->width[level] ||
 135        image->Height != pt->height[level] ||
 136        image->Depth != pt->depth[level])
 137       return GL_FALSE;
 138
 139    return GL_TRUE;
 140 }
 141
 142
 143 #if 000
 144 /* Although we use the image_offset[] array to store relative offsets
 145  * to cube faces, Mesa doesn't know anything about this and expects
 146  * each cube face to be treated as a separate image.
 147  *
 148  * These functions present that view to mesa:
 149  */
 150 const GLuint *
 151 st_texture_depth_offsets(struct pipe_texture *pt, GLuint level)
 152 {
 153    static const GLuint zero = 0;
 154
 155    if (pt->target != PIPE_TEXTURE_3D || pt->level[level].nr_images == 1)
 156       return &zero;
 157    else
 158       return pt->level[level].image_offset;
 159 }
 160
 161
 162 /**
 163  * Return the offset to the given mipmap texture image within the
 164  * texture memory buffer, in bytes.
 165  */
 166 GLuint
 167 st_texture_image_offset(const struct pipe_texture * pt,
 168                         GLuint face, GLuint level)
 169 {
 170    if (pt->target == PIPE_TEXTURE_CUBE)
 171       return (pt->level[level].level_offset +
 172               pt->level[level].image_offset[face] * pt->cpp);
 173    else
 174       return pt->level[level].level_offset;
 175 }
 176 #endif
 177
 178
 179 /**
 180  * Map a teximage in a mipmap texture.
 181  * \param row_stride  returns row stride in bytes
 182  * \param image_stride  returns image stride in bytes (for 3D textures).
 183  * \return address of mapping
 184  */
 185 GLubyte *
 186 st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
 187                      GLuint zoffset,
 188                      GLuint flags )
 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                                               flags);
 197
 198    return screen->surface_map(screen, stImage->surface, flags);
 199 }
 200
 201
 202 void
 203 st_texture_image_unmap(struct st_context *st,
 204                        struct st_texture_image *stImage)
 205 {
 206    struct pipe_screen *screen = st->pipe->screen;
 207
 208    DBG("%s\n", __FUNCTION__);
 209
 210    screen->surface_unmap(screen, stImage->surface);
 211
 212    pipe_surface_reference(&stImage->surface, NULL);
 213 }
 214
 215
 216
 217 /**
 218  * Upload data to a rectangular sub-region.  Lots of choices how to do this:
 219  *
 220  * - memcpy by span to current destination
 221  * - upload data as new buffer and blit
 222  *
 223  * Currently always memcpy.
 224  */
 225 static void
 226 st_surface_data(struct pipe_context *pipe,
 227                 struct pipe_surface *dst,
 228                 unsigned dstx, unsigned dsty,
 229                 const void *src, unsigned src_pitch,
 230                 unsigned srcx, unsigned srcy, unsigned width, unsigned height)
 231 {
 232    struct pipe_screen *screen = pipe->screen;
 233    void *map = screen->surface_map(screen, dst, PIPE_BUFFER_USAGE_CPU_WRITE);
 234
 235    pipe_copy_rect(map,
 236                   dst->cpp,
 237                   dst->pitch,
 238                   dstx, dsty, width, height, src, src_pitch, srcx, srcy);
 239
 240    screen->surface_unmap(screen, dst);
 241 }
 242
 243
 244 /* Upload data for a particular image.
 245  */
 246 void
 247 st_texture_image_data(struct pipe_context *pipe,
 248                       struct pipe_texture *dst,
 249                       GLuint face,
 250                       GLuint level,
 251                       void *src,
 252                       GLuint src_row_pitch, GLuint src_image_pitch)
 253 {
 254    struct pipe_screen *screen = pipe->screen;
 255    GLuint depth = dst->depth[level];
 256    GLuint i;
 257    GLuint height = 0;
 258    const GLubyte *srcUB = src;
 259    struct pipe_surface *dst_surface;
 260
 261    DBG("%s\n", __FUNCTION__);
 262    for (i = 0; i < depth; i++) {
 263       height = dst->height[level];
 264       if(dst->compressed)
 265          height /= 4;
 266
 267       dst_surface = screen->get_tex_surface(screen, dst, face, level, i,
 268                                             PIPE_BUFFER_USAGE_CPU_WRITE);
 269
 270       st_surface_data(pipe, dst_surface,
 271                       0, 0,                             /* dstx, dsty */
 272                       srcUB,
 273                       src_row_pitch,
 274                       0, 0,                             /* source x, y */
 275                       dst->width[level], height);       /* width, height */
 276
 277       screen->tex_surface_release(screen, &dst_surface);
 278
 279       srcUB += src_image_pitch * dst->cpp;
 280    }
 281 }
 282
 283
 284 /* Copy mipmap image between textures
 285  */
 286 void
 287 st_texture_image_copy(struct pipe_context *pipe,
 288                       struct pipe_texture *dst, GLuint dstLevel,
 289                       struct pipe_texture *src,
 290                       GLuint face)
 291 {
 292    struct pipe_screen *screen = pipe->screen;
 293    GLuint width = dst->width[dstLevel];
 294    GLuint height = dst->height[dstLevel];
 295    GLuint depth = dst->depth[dstLevel];
 296    struct pipe_surface *src_surface;
 297    struct pipe_surface *dst_surface;
 298    GLuint i;
 299
 300    /* XXX this is a hack */
 301    const GLuint copyHeight = dst->compressed ? height / 4 : height;
 302
 303    for (i = 0; i < depth; i++) {
 304       GLuint srcLevel;
 305
 306       /* find src texture level of needed size */
 307       for (srcLevel = 0; srcLevel <= src->last_level; srcLevel++) {
 308          if (src->width[srcLevel] == width &&
 309              src->height[srcLevel] == height) {
 310             break;
 311          }
 312       }
 313       assert(src->width[srcLevel] == width);
 314       assert(src->height[srcLevel] == height);
 315
 316       dst_surface = screen->get_tex_surface(screen, dst, face, dstLevel, i,
 317                                             PIPE_BUFFER_USAGE_GPU_WRITE);
 318
 319       src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
 320                                             PIPE_BUFFER_USAGE_GPU_READ);
 321
 322       pipe->surface_copy(pipe,
 323                          FALSE,
 324                          dst_surface,
 325                          0, 0, /* destX, Y */
 326                          src_surface,
 327                          0, 0, /* srcX, Y */
 328                          width, copyHeight);
 329
 330       screen->tex_surface_release(screen, &src_surface);
 331       screen->tex_surface_release(screen, &dst_surface);
 332    }
 333 }