src/gallium/drivers/r300/r300_texture.c

   1 /*
   2  * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  22
  23 #include "pipe/p_screen.h"
  24
  25 #include "util/u_format.h"
  26 #include "util/u_math.h"
  27 #include "util/u_memory.h"
  28
  29 #include "r300_context.h"
  30 #include "r300_texture.h"
  31 #include "r300_screen.h"
  32
  33 #define TILE_WIDTH 0
  34 #define TILE_HEIGHT 1
  35
  36 static const unsigned microblock_table[5][3][2] = {
  37     /*linear  tiled   square-tiled */
  38     {{32, 1}, {8, 4}, {0, 0}}, /*   8 bits per pixel */
  39     {{16, 1}, {8, 2}, {4, 4}}, /*  16 bits per pixel */
  40     {{ 8, 1}, {4, 2}, {0, 0}}, /*  32 bits per pixel */
  41     {{ 4, 1}, {0, 0}, {2, 2}}, /*  64 bits per pixel */
  42     {{ 2, 1}, {0, 0}, {0, 0}}  /* 128 bits per pixel */
  43 };
  44
  45 static void r300_setup_texture_state(struct r300_screen* screen, struct r300_texture* tex)
  46 {
  47     struct r300_texture_state* state = &tex->state;
  48     struct pipe_texture *pt = &tex->tex;
  49     boolean is_r500 = screen->caps->is_r500;
  50
  51     state->format0 = R300_TX_WIDTH((pt->width0 - 1) & 0x7ff) |
  52                      R300_TX_HEIGHT((pt->height0 - 1) & 0x7ff);
  53
  54     if (tex->is_npot) {
  55         /* rectangles love this */
  56         state->format0 |= R300_TX_PITCH_EN;
  57         state->format2 = (tex->pitch[0] - 1) & 0x1fff;
  58     } else {
  59         /* power of two textures (3D, mipmaps, and no pitch) */
  60         state->format0 |= R300_TX_DEPTH(util_logbase2(pt->depth0) & 0xf);
  61     }
  62
  63     state->format1 = r300_translate_texformat(pt->format);
  64     if (pt->target == PIPE_TEXTURE_CUBE) {
  65         state->format1 |= R300_TX_FORMAT_CUBIC_MAP;
  66     }
  67     if (pt->target == PIPE_TEXTURE_3D) {
  68         state->format1 |= R300_TX_FORMAT_3D;
  69     }
  70
  71     /* large textures on r500 */
  72     if (is_r500)
  73     {
  74         if (pt->width0 > 2048) {
  75             state->format2 |= R500_TXWIDTH_BIT11;
  76         }
  77         if (pt->height0 > 2048) {
  78             state->format2 |= R500_TXHEIGHT_BIT11;
  79         }
  80     }
  81     assert(is_r500 || (pt->width0 <= 2048 && pt->height0 <= 2048));
  82
  83     SCREEN_DBG(screen, DBG_TEX, "r300: Set texture state (%dx%d, %d levels)\n",
  84                pt->width0, pt->height0, pt->last_level);
  85 }
  86
  87 unsigned r300_texture_get_offset(struct r300_texture* tex, unsigned level,
  88                                  unsigned zslice, unsigned face)
  89 {
  90     unsigned offset = tex->offset[level];
  91
  92     switch (tex->tex.target) {
  93         case PIPE_TEXTURE_3D:
  94             assert(face == 0);
  95             return offset + zslice * tex->layer_size[level];
  96
  97         case PIPE_TEXTURE_CUBE:
  98             assert(zslice == 0);
  99             return offset + face * tex->layer_size[level];
 100
 101         default:
 102             assert(zslice == 0 && face == 0);
 103             return offset;
 104     }
 105 }
 106
 107 /**
 108  * Return the width (dim==TILE_WIDTH) or height (dim==TILE_HEIGHT) of one tile
 109  * of the given texture.
 110  */
 111 static unsigned r300_texture_get_tile_size(struct r300_texture* tex, int dim)
 112 {
 113     unsigned pixsize, tile_size;
 114
 115     pixsize = util_format_get_blocksize(tex->tex.format);
 116     tile_size = microblock_table[util_logbase2(pixsize)][tex->microtile][dim] *
 117                 (tex->macrotile == R300_BUFFER_TILED ? 8 : 1);
 118
 119     assert(tile_size);
 120     return tile_size;
 121 }
 122
 123 /**
 124  * Return the stride, in bytes, of the texture images of the given texture
 125  * at the given level.
 126  */
 127 unsigned r300_texture_get_stride(struct r300_screen* screen,
 128                                  struct r300_texture* tex, unsigned level)
 129 {
 130     unsigned tile_width, width;
 131
 132     if (tex->stride_override)
 133         return tex->stride_override;
 134
 135     /* Check the level. */
 136     if (level > tex->tex.last_level) {
 137         SCREEN_DBG(screen, DBG_TEX, "%s: level (%u) > last_level (%u)\n",
 138                    __FUNCTION__, level, tex->tex.last_level);
 139         return 0;
 140     }
 141
 142     tile_width = r300_texture_get_tile_size(tex, TILE_WIDTH);
 143     width = align(u_minify(tex->tex.width0, level), tile_width);
 144
 145     /* Should already be aligned except for S3TC. */
 146     return align(util_format_get_stride(tex->tex.format, width), 32);
 147 }
 148
 149 static unsigned r300_texture_get_nblocksy(struct r300_texture* tex,
 150                                           unsigned level)
 151 {
 152     unsigned height, tile_height;
 153
 154     tile_height = r300_texture_get_tile_size(tex, TILE_HEIGHT);
 155     height = align(u_minify(tex->tex.height0, level), tile_height);
 156
 157     return util_format_get_nblocksy(tex->tex.format, height);
 158 }
 159
 160 static void r300_setup_miptree(struct r300_screen* screen,
 161                                struct r300_texture* tex)
 162 {
 163     struct pipe_texture* base = &tex->tex;
 164     unsigned stride, size, layer_size, nblocksy, i;
 165
 166     SCREEN_DBG(screen, DBG_TEX, "r300: Making miptree for texture, format %s\n",
 167                pf_name(base->format));
 168
 169     for (i = 0; i <= base->last_level; i++) {
 170         stride = r300_texture_get_stride(screen, tex, i);
 171         nblocksy = r300_texture_get_nblocksy(tex, i);
 172         layer_size = stride * nblocksy;
 173
 174         if (base->target == PIPE_TEXTURE_CUBE)
 175             size = layer_size * 6;
 176         else
 177             size = layer_size * u_minify(base->depth0, i);
 178
 179         tex->offset[i] = align(tex->size, 32);
 180         tex->size = tex->offset[i] + size;
 181         tex->layer_size[i] = layer_size;
 182         tex->pitch[i] = stride / util_format_get_blocksize(base->format);
 183
 184         SCREEN_DBG(screen, DBG_TEX, "r300: Texture miptree: Level %d "
 185                 "(%dx%dx%d px, pitch %d bytes) %d bytes total\n",
 186                 i, u_minify(base->width0, i), u_minify(base->height0, i),
 187                 u_minify(base->depth0, i), stride, tex->size);
 188     }
 189 }
 190
 191 static void r300_setup_flags(struct r300_texture* tex)
 192 {
 193     tex->is_npot = !util_is_power_of_two(tex->tex.width0) ||
 194                    !util_is_power_of_two(tex->tex.height0);
 195 }
 196
 197 /* Create a new texture. */
 198 static struct pipe_texture*
 199     r300_texture_create(struct pipe_screen* screen,
 200                         const struct pipe_texture* template)
 201 {
 202     struct r300_texture* tex = CALLOC_STRUCT(r300_texture);
 203     struct r300_screen* rscreen = r300_screen(screen);
 204
 205     if (!tex) {
 206         return NULL;
 207     }
 208
 209     tex->tex = *template;
 210     pipe_reference_init(&tex->tex.reference, 1);
 211     tex->tex.screen = screen;
 212
 213     r300_setup_flags(tex);
 214     r300_setup_miptree(rscreen, tex);
 215     r300_setup_texture_state(rscreen, tex);
 216
 217     tex->buffer = screen->buffer_create(screen, 2048,
 218                                         PIPE_BUFFER_USAGE_PIXEL,
 219                                         tex->size);
 220
 221     if (!tex->buffer) {
 222         FREE(tex);
 223         return NULL;
 224     }
 225
 226     return (struct pipe_texture*)tex;
 227 }
 228
 229 static void r300_texture_destroy(struct pipe_texture* texture)
 230 {
 231     struct r300_texture* tex = (struct r300_texture*)texture;
 232
 233     pipe_buffer_reference(&tex->buffer, NULL);
 234
 235     FREE(tex);
 236 }
 237
 238 static struct pipe_surface* r300_get_tex_surface(struct pipe_screen* screen,
 239                                                  struct pipe_texture* texture,
 240                                                  unsigned face,
 241                                                  unsigned level,
 242                                                  unsigned zslice,
 243                                                  unsigned flags)
 244 {
 245     struct r300_texture* tex = (struct r300_texture*)texture;
 246     struct pipe_surface* surface = CALLOC_STRUCT(pipe_surface);
 247     unsigned offset;
 248
 249     offset = r300_texture_get_offset(tex, level, zslice, face);
 250
 251     if (surface) {
 252         pipe_reference_init(&surface->reference, 1);
 253         pipe_texture_reference(&surface->texture, texture);
 254         surface->format = texture->format;
 255         surface->width = u_minify(texture->width0, level);
 256         surface->height = u_minify(texture->height0, level);
 257         surface->offset = offset;
 258         surface->usage = flags;
 259         surface->zslice = zslice;
 260         surface->texture = texture;
 261         surface->face = face;
 262         surface->level = level;
 263     }
 264
 265     return surface;
 266 }
 267
 268 static void r300_tex_surface_destroy(struct pipe_surface* s)
 269 {
 270     pipe_texture_reference(&s->texture, NULL);
 271     FREE(s);
 272 }
 273
 274 static struct pipe_texture*
 275     r300_texture_blanket(struct pipe_screen* screen,
 276                          const struct pipe_texture* base,
 277                          const unsigned* stride,
 278                          struct pipe_buffer* buffer)
 279 {
 280     struct r300_texture* tex;
 281     struct r300_screen* rscreen = r300_screen(screen);
 282
 283     /* Support only 2D textures without mipmaps */
 284     if (base->target != PIPE_TEXTURE_2D ||
 285         base->depth0 != 1 ||
 286         base->last_level != 0) {
 287         return NULL;
 288     }
 289
 290     tex = CALLOC_STRUCT(r300_texture);
 291     if (!tex) {
 292         return NULL;
 293     }
 294
 295     tex->tex = *base;
 296     pipe_reference_init(&tex->tex.reference, 1);
 297     tex->tex.screen = screen;
 298
 299     tex->stride_override = *stride;
 300     tex->pitch[0] = *stride / util_format_get_blocksize(base->format);
 301
 302     r300_setup_flags(tex);
 303     r300_setup_texture_state(rscreen, tex);
 304
 305     pipe_buffer_reference(&tex->buffer, buffer);
 306
 307     return (struct pipe_texture*)tex;
 308 }
 309
 310 static struct pipe_video_surface *
 311 r300_video_surface_create(struct pipe_screen *screen,
 312                           enum pipe_video_chroma_format chroma_format,
 313                           unsigned width, unsigned height)
 314 {
 315     struct r300_video_surface *r300_vsfc;
 316     struct pipe_texture template;
 317
 318     assert(screen);
 319     assert(width && height);
 320
 321     r300_vsfc = CALLOC_STRUCT(r300_video_surface);
 322     if (!r300_vsfc)
 323        return NULL;
 324
 325     pipe_reference_init(&r300_vsfc->base.reference, 1);
 326     r300_vsfc->base.screen = screen;
 327     r300_vsfc->base.chroma_format = chroma_format;
 328     r300_vsfc->base.width = width;
 329     r300_vsfc->base.height = height;
 330
 331     memset(&template, 0, sizeof(struct pipe_texture));
 332     template.target = PIPE_TEXTURE_2D;
 333     template.format = PIPE_FORMAT_X8R8G8B8_UNORM;
 334     template.last_level = 0;
 335     template.width0 = util_next_power_of_two(width);
 336     template.height0 = util_next_power_of_two(height);
 337     template.depth0 = 1;
 338     template.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER |
 339                          PIPE_TEXTURE_USAGE_RENDER_TARGET;
 340
 341     r300_vsfc->tex = screen->texture_create(screen, &template);
 342     if (!r300_vsfc->tex)
 343     {
 344         FREE(r300_vsfc);
 345         return NULL;
 346     }
 347
 348     return &r300_vsfc->base;
 349 }
 350
 351 static void r300_video_surface_destroy(struct pipe_video_surface *vsfc)
 352 {
 353     struct r300_video_surface *r300_vsfc = r300_video_surface(vsfc);
 354     pipe_texture_reference(&r300_vsfc->tex, NULL);
 355     FREE(r300_vsfc);
 356 }
 357
 358 void r300_init_screen_texture_functions(struct pipe_screen* screen)
 359 {
 360     screen->texture_create = r300_texture_create;
 361     screen->texture_destroy = r300_texture_destroy;
 362     screen->get_tex_surface = r300_get_tex_surface;
 363     screen->tex_surface_destroy = r300_tex_surface_destroy;
 364     screen->texture_blanket = r300_texture_blanket;
 365
 366     screen->video_surface_create = r300_video_surface_create;
 367     screen->video_surface_destroy= r300_video_surface_destroy;
 368 }
 369
 370 boolean r300_get_texture_buffer(struct pipe_screen* screen,
 371                                 struct pipe_texture* texture,
 372                                 struct pipe_buffer** buffer,
 373                                 unsigned* stride)
 374 {
 375     struct r300_texture* tex = (struct r300_texture*)texture;
 376     if (!tex) {
 377         return FALSE;
 378     }
 379
 380     pipe_buffer_reference(buffer, tex->buffer);
 381
 382     if (stride) {
 383         *stride = r300_texture_get_stride(r300_screen(screen), tex, 0);
 384     }
 385
 386     return TRUE;
 387 }