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 "st_cb_fbo.h"
  32 #include "st_inlines.h"
  33 #include "main/enums.h"
  34
  35 #undef Elements  /* fix re-defined macro warning */
  36
  37 #include "pipe/p_state.h"
  38 #include "pipe/p_context.h"
  39 #include "pipe/p_defines.h"
  40 #include "util/u_inlines.h"
  41 #include "util/u_format.h"
  42 #include "util/u_rect.h"
  43 #include "util/u_math.h"
  44
  45
  46 #define DBG if(0) printf
  47
  48 #if 0
  49 static GLenum
  50 target_to_target(GLenum target)
  51 {
  52    switch (target) {
  53    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
  54    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
  55    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
  56    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
  57    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
  58    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
  59       return GL_TEXTURE_CUBE_MAP_ARB;
  60    default:
  61       return target;
  62    }
  63 }
  64 #endif
  65
  66
  67 /**
  68  * Allocate a new pipe_resource object
  69  * width0, height0, depth0 are the dimensions of the level 0 image
  70  * (the highest resolution).  last_level indicates how many mipmap levels
  71  * to allocate storage for.  For non-mipmapped textures, this will be zero.
  72  */
  73 struct pipe_resource *
  74 st_texture_create(struct st_context *st,
  75                   enum pipe_texture_target target,
  76                   enum pipe_format format,
  77                   GLuint last_level,
  78                   GLuint width0,
  79                   GLuint height0,
  80                   GLuint depth0,
  81                   GLuint bind )
  82 {
  83    struct pipe_resource pt, *newtex;
  84    struct pipe_screen *screen = st->pipe->screen;
  85
  86    assert(target <= PIPE_TEXTURE_CUBE);
  87
  88    DBG("%s target %s format %s last_level %d\n", __FUNCTION__,
  89        _mesa_lookup_enum_by_nr(target),
  90        _mesa_lookup_enum_by_nr(format), last_level);
  91
  92    assert(format);
  93    assert(screen->is_format_supported(screen, format, target,
  94                                       PIPE_BIND_SAMPLER_VIEW, 0));
  95
  96    memset(&pt, 0, sizeof(pt));
  97    pt.target = target;
  98    pt.format = format;
  99    pt.last_level = last_level;
 100    pt.width0 = width0;
 101    pt.height0 = height0;
 102    pt.depth0 = depth0;
 103    pt.usage = PIPE_USAGE_DEFAULT;
 104    pt.bind = bind;
 105    pt.flags = 0;
 106
 107    newtex = screen->resource_create(screen, &pt);
 108
 109    assert(!newtex || pipe_is_referenced(&newtex->reference));
 110
 111    return newtex;
 112 }
 113
 114
 115 /**
 116  * Check if a texture image can be pulled into a unified mipmap texture.
 117  */
 118 GLboolean
 119 st_texture_match_image(const struct pipe_resource *pt,
 120                        const struct gl_texture_image *image,
 121                        GLuint face, GLuint level)
 122 {
 123    /* Images with borders are never pulled into mipmap textures.
 124     */
 125    if (image->Border)
 126       return GL_FALSE;
 127
 128    /* Check if this image's format matches the established texture's format.
 129     */
 130    if (st_mesa_format_to_pipe_format(image->TexFormat) != pt->format)
 131       return GL_FALSE;
 132
 133    /* Test if this image's size matches what's expected in the
 134     * established texture.
 135     */
 136    if (image->Width != u_minify(pt->width0, level) ||
 137        image->Height != u_minify(pt->height0, level) ||
 138        image->Depth != u_minify(pt->depth0, level))
 139       return GL_FALSE;
 140
 141    return GL_TRUE;
 142 }
 143
 144
 145 #if 000
 146 /* Although we use the image_offset[] array to store relative offsets
 147  * to cube faces, Mesa doesn't know anything about this and expects
 148  * each cube face to be treated as a separate image.
 149  *
 150  * These functions present that view to mesa:
 151  */
 152 const GLuint *
 153 st_texture_depth_offsets(struct pipe_resource *pt, GLuint level)
 154 {
 155    static const GLuint zero = 0;
 156
 157    if (pt->target != PIPE_TEXTURE_3D || pt->level[level].nr_images == 1)
 158       return &zero;
 159    else
 160       return pt->level[level].image_offset;
 161 }
 162
 163
 164 /**
 165  * Return the offset to the given mipmap texture image within the
 166  * texture memory buffer, in bytes.
 167  */
 168 GLuint
 169 st_texture_image_offset(const struct pipe_resource * pt,
 170                         GLuint face, GLuint level)
 171 {
 172    if (pt->target == PIPE_TEXTURE_CUBE)
 173       return (pt->level[level].level_offset +
 174               pt->level[level].image_offset[face] * pt->cpp);
 175    else
 176       return pt->level[level].level_offset;
 177 }
 178 #endif
 179
 180
 181 /**
 182  * Map a teximage in a mipmap texture.
 183  * \param row_stride  returns row stride in bytes
 184  * \param image_stride  returns image stride in bytes (for 3D textures).
 185  * \return address of mapping
 186  */
 187 GLubyte *
 188 st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
 189                      GLuint zoffset, enum pipe_transfer_usage usage,
 190                      GLuint x, GLuint y, GLuint w, GLuint h)
 191 {
 192    struct pipe_context *pipe = st->pipe;
 193    struct pipe_resource *pt = stImage->pt;
 194
 195    DBG("%s \n", __FUNCTION__);
 196
 197    stImage->transfer = st_no_flush_get_tex_transfer(st, pt, stImage->face,
 198                                                     stImage->level, zoffset,
 199                                                     usage, x, y, w, h);
 200
 201    if (stImage->transfer)
 202       return pipe_transfer_map(pipe, stImage->transfer);
 203    else
 204       return NULL;
 205 }
 206
 207
 208 void
 209 st_texture_image_unmap(struct st_context *st,
 210                        struct st_texture_image *stImage)
 211 {
 212    struct pipe_context *pipe = st->pipe;
 213
 214    DBG("%s\n", __FUNCTION__);
 215
 216    pipe_transfer_unmap(pipe, stImage->transfer);
 217
 218    pipe->transfer_destroy(pipe, stImage->transfer);
 219 }
 220
 221
 222
 223 /**
 224  * Upload data to a rectangular sub-region.  Lots of choices how to do this:
 225  *
 226  * - memcpy by span to current destination
 227  * - upload data as new buffer and blit
 228  *
 229  * Currently always memcpy.
 230  */
 231 static void
 232 st_surface_data(struct pipe_context *pipe,
 233                 struct pipe_transfer *dst,
 234                 unsigned dstx, unsigned dsty,
 235                 const void *src, unsigned src_stride,
 236                 unsigned srcx, unsigned srcy, unsigned width, unsigned height)
 237 {
 238    void *map = pipe_transfer_map(pipe, dst);
 239
 240    assert(dst->resource);
 241    util_copy_rect(map,
 242                   dst->resource->format,
 243                   dst->stride,
 244                   dstx, dsty,
 245                   width, height,
 246                   src, src_stride,
 247                   srcx, srcy);
 248
 249    pipe_transfer_unmap(pipe, dst);
 250 }
 251
 252
 253 /* Upload data for a particular image.
 254  */
 255 void
 256 st_texture_image_data(struct st_context *st,
 257                       struct pipe_resource *dst,
 258                       GLuint face,
 259                       GLuint level,
 260                       void *src,
 261                       GLuint src_row_stride, GLuint src_image_stride)
 262 {
 263    struct pipe_context *pipe = st->pipe;
 264    GLuint depth = u_minify(dst->depth0, level);
 265    GLuint i;
 266    const GLubyte *srcUB = src;
 267    struct pipe_transfer *dst_transfer;
 268
 269    DBG("%s\n", __FUNCTION__);
 270
 271    for (i = 0; i < depth; i++) {
 272       dst_transfer = st_no_flush_get_tex_transfer(st, dst, face, level, i,
 273                                                   PIPE_TRANSFER_WRITE, 0, 0,
 274                                                   u_minify(dst->width0, level),
 275                                                   u_minify(dst->height0, level));
 276
 277       st_surface_data(pipe, dst_transfer,
 278                       0, 0,                             /* dstx, dsty */
 279                       srcUB,
 280                       src_row_stride,
 281                       0, 0,                             /* source x, y */
 282                       u_minify(dst->width0, level),
 283                       u_minify(dst->height0, level));      /* width, height */
 284
 285       pipe->transfer_destroy(pipe, dst_transfer);
 286
 287       srcUB += src_image_stride;
 288    }
 289 }
 290
 291
 292 /* Copy mipmap image between textures
 293  */
 294 void
 295 st_texture_image_copy(struct pipe_context *pipe,
 296                       struct pipe_resource *dst, GLuint dstLevel,
 297                       struct pipe_resource *src,
 298                       GLuint face)
 299 {
 300    struct pipe_screen *screen = pipe->screen;
 301    GLuint width = u_minify(dst->width0, dstLevel);
 302    GLuint height = u_minify(dst->height0, dstLevel);
 303    GLuint depth = u_minify(dst->depth0, dstLevel);
 304    struct pipe_surface *src_surface;
 305    struct pipe_surface *dst_surface;
 306    GLuint i;
 307
 308    for (i = 0; i < depth; i++) {
 309       GLuint srcLevel;
 310
 311       /* find src texture level of needed size */
 312       for (srcLevel = 0; srcLevel <= src->last_level; srcLevel++) {
 313          if (u_minify(src->width0, srcLevel) == width &&
 314              u_minify(src->height0, srcLevel) == height) {
 315             break;
 316          }
 317       }
 318       assert(u_minify(src->width0, srcLevel) == width);
 319       assert(u_minify(src->height0, srcLevel) == height);
 320
 321 #if 0
 322       {
 323          src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
 324                                                PIPE_BUFFER_USAGE_CPU_READ);
 325          ubyte *map = screen->surface_map(screen, src_surface, PIPE_BUFFER_USAGE_CPU_READ);
 326          map += src_surface->width * src_surface->height * 4 / 2;
 327          printf("%s center pixel: %d %d %d %d (pt %p[%d] -> %p[%d])\n",
 328                 __FUNCTION__,
 329                 map[0], map[1], map[2], map[3],
 330                 src, srcLevel, dst, dstLevel);
 331
 332          screen->surface_unmap(screen, src_surface);
 333          pipe_surface_reference(&src_surface, NULL);
 334       }
 335 #endif
 336
 337       dst_surface = screen->get_tex_surface(screen, dst, face, dstLevel, i,
 338                                             PIPE_BIND_BLIT_DESTINATION);
 339
 340       src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
 341                                             PIPE_BIND_BLIT_SOURCE);
 342
 343       pipe->surface_copy(pipe,
 344                          dst_surface,
 345                          0, 0, /* destX, Y */
 346                          src_surface,
 347                          0, 0, /* srcX, Y */
 348                          width, height);
 349
 350       pipe_surface_reference(&src_surface, NULL);
 351       pipe_surface_reference(&dst_surface, NULL);
 352    }
 353 }
 354
 355
 356 void
 357 st_teximage_flush_before_map(struct st_context *st,
 358                              struct pipe_resource *pt,
 359                              unsigned int face,
 360                              unsigned int level,
 361                              enum pipe_transfer_usage usage)
 362 {
 363    struct pipe_context *pipe = st->pipe;
 364    unsigned referenced =
 365       pipe->is_resource_referenced(pipe, pt, face, level);
 366
 367    if (referenced && ((referenced & PIPE_REFERENCED_FOR_WRITE) ||
 368                       (usage & PIPE_TRANSFER_WRITE)))
 369       st->pipe->flush(st->pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 370 }