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_texture* tex, boolean is_r500)
  46 {
  47     struct r300_texture_state* state = &tex->state;
  48     struct pipe_texture *pt = &tex->tex;
  49
  50     state->format0 = R300_TX_WIDTH((pt->width0 - 1) & 0x7ff) |
  51                      R300_TX_HEIGHT((pt->height0 - 1) & 0x7ff);
  52
  53     if (tex->is_npot) {
  54         /* rectangles love this */
  55         state->format0 |= R300_TX_PITCH_EN;
  56         state->format2 = (tex->pitch[0] - 1) & 0x1fff;
  57     } else {
  58         /* power of two textures (3D, mipmaps, and no pitch) */
  59         state->format0 |= R300_TX_DEPTH(util_logbase2(pt->depth0) & 0xf);
  60     }
  61
  62     state->format1 = r300_translate_texformat(pt->format);
  63     if (pt->target == PIPE_TEXTURE_CUBE) {
  64         state->format1 |= R300_TX_FORMAT_CUBIC_MAP;
  65     }
  66     if (pt->target == PIPE_TEXTURE_3D) {
  67         state->format1 |= R300_TX_FORMAT_3D;
  68     }
  69
  70     /* large textures on r500 */
  71     if (is_r500)
  72     {
  73         if (pt->width0 > 2048) {
  74             state->format2 |= R500_TXWIDTH_BIT11;
  75         }
  76         if (pt->height0 > 2048) {
  77             state->format2 |= R500_TXHEIGHT_BIT11;
  78         }
  79     }
  80     assert(is_r500 || (pt->width0 <= 2048 && pt->height0 <= 2048));
  81
  82     debug_printf("r300: Set texture state (%dx%d, %d levels)\n",
  83                  pt->width0, pt->height0, pt->last_level);
  84 }
  85
  86 unsigned r300_texture_get_offset(struct r300_texture* tex, unsigned level,
  87                                  unsigned zslice, unsigned face)
  88 {
  89     unsigned offset = tex->offset[level];
  90
  91     switch (tex->tex.target) {
  92         case PIPE_TEXTURE_3D:
  93             assert(face == 0);
  94             return offset + zslice * tex->layer_size[level];
  95
  96         case PIPE_TEXTURE_CUBE:
  97             assert(zslice == 0);
  98             return offset + face * tex->layer_size[level];
  99
 100         default:
 101             assert(zslice == 0 && face == 0);
 102             return offset;
 103     }
 104 }
 105
 106 /**
 107  * Return the width (dim==TILE_WIDTH) or height (dim==TILE_HEIGHT) of one tile
 108  * of the given texture.
 109  */
 110 static unsigned r300_texture_get_tile_size(struct r300_texture* tex, int dim)
 111 {
 112     unsigned pixsize, tile_size;
 113
 114     pixsize = util_format_get_blocksize(tex->tex.format);
 115     tile_size = microblock_table[util_logbase2(pixsize)][tex->microtile][dim] *
 116                 (tex->macrotile == R300_BUFFER_TILED ? 8 : 1);
 117
 118     assert(tile_size);
 119     return tile_size;
 120 }
 121
 122 /**
 123  * Return the stride, in bytes, of the texture images of the given texture
 124  * at the given level.
 125  */
 126 unsigned r300_texture_get_stride(struct r300_texture* tex, unsigned level)
 127 {
 128     unsigned tile_width, width;
 129
 130     if (tex->stride_override)
 131         return tex->stride_override;
 132
 133     /* Check the level. */
 134     if (level > tex->tex.last_level) {
 135         debug_printf("%s: level (%u) > last_level (%u)\n", __FUNCTION__,
 136             level, tex->tex.last_level);
 137         return 0;
 138     }
 139
 140     tile_width = r300_texture_get_tile_size(tex, TILE_WIDTH);
 141     width = align(u_minify(tex->tex.width0, level), tile_width);
 142
 143     /* Should already be aligned except for S3TC. */
 144     return align(util_format_get_stride(tex->tex.format, width), 32);
 145 }
 146
 147 static unsigned r300_texture_get_nblocksy(struct r300_texture* tex,
 148                                           unsigned level)
 149 {
 150     unsigned height, tile_height;
 151
 152     tile_height = r300_texture_get_tile_size(tex, TILE_HEIGHT);
 153     height = align(u_minify(tex->tex.height0, level), tile_height);
 154
 155     return util_format_get_nblocksy(tex->tex.format, height);
 156 }
 157
 158 static void r300_setup_miptree(struct r300_texture* tex)
 159 {
 160     struct pipe_texture* base = &tex->tex;
 161     unsigned stride, size, layer_size, nblocksy, i;
 162
 163     debug_printf("r300: Making miptree for texture, format %s\n", pf_name(base->format));
 164
 165     for (i = 0; i <= base->last_level; i++) {
 166         stride = r300_texture_get_stride(tex, i);
 167         nblocksy = r300_texture_get_nblocksy(tex, i);
 168         layer_size = stride * nblocksy;
 169
 170         if (base->target == PIPE_TEXTURE_CUBE)
 171             size = layer_size * 6;
 172         else
 173             size = layer_size * u_minify(base->depth0, i);
 174
 175         tex->offset[i] = align(tex->size, 32);
 176         tex->size = tex->offset[i] + size;
 177         tex->layer_size[i] = layer_size;
 178         tex->pitch[i] = stride / util_format_get_blocksize(base->format);
 179
 180         debug_printf("r300: Texture miptree: Level %d "
 181                 "(%dx%dx%d px, pitch %d bytes) %d bytes total\n",
 182                 i, u_minify(base->width0, i), u_minify(base->height0, i),
 183                 u_minify(base->depth0, i), stride, tex->size);
 184     }
 185 }
 186
 187 static void r300_setup_flags(struct r300_texture* tex)
 188 {
 189     tex->is_npot = !util_is_power_of_two(tex->tex.width0) ||
 190                    !util_is_power_of_two(tex->tex.height0);
 191 }
 192
 193 /* Create a new texture. */
 194 static struct pipe_texture*
 195     r300_texture_create(struct pipe_screen* screen,
 196                         const struct pipe_texture* template)
 197 {
 198     struct r300_texture* tex = CALLOC_STRUCT(r300_texture);
 199
 200     if (!tex) {
 201         return NULL;
 202     }
 203
 204     tex->tex = *template;
 205     pipe_reference_init(&tex->tex.reference, 1);
 206     tex->tex.screen = screen;
 207
 208     r300_setup_flags(tex);
 209     r300_setup_miptree(tex);
 210     r300_setup_texture_state(tex, r300_screen(screen)->caps->is_r500);
 211
 212     tex->buffer = screen->buffer_create(screen, 2048,
 213                                         PIPE_BUFFER_USAGE_PIXEL,
 214                                         tex->size);
 215
 216     if (!tex->buffer) {
 217         FREE(tex);
 218         return NULL;
 219     }
 220
 221     return (struct pipe_texture*)tex;
 222 }
 223
 224 static void r300_texture_destroy(struct pipe_texture* texture)
 225 {
 226     struct r300_texture* tex = (struct r300_texture*)texture;
 227
 228     pipe_buffer_reference(&tex->buffer, NULL);
 229
 230     FREE(tex);
 231 }
 232
 233 static struct pipe_surface* r300_get_tex_surface(struct pipe_screen* screen,
 234                                                  struct pipe_texture* texture,
 235                                                  unsigned face,
 236                                                  unsigned level,
 237                                                  unsigned zslice,
 238                                                  unsigned flags)
 239 {
 240     struct r300_texture* tex = (struct r300_texture*)texture;
 241     struct pipe_surface* surface = CALLOC_STRUCT(pipe_surface);
 242     unsigned offset;
 243
 244     offset = r300_texture_get_offset(tex, level, zslice, face);
 245
 246     if (surface) {
 247         pipe_reference_init(&surface->reference, 1);
 248         pipe_texture_reference(&surface->texture, texture);
 249         surface->format = texture->format;
 250         surface->width = u_minify(texture->width0, level);
 251         surface->height = u_minify(texture->height0, level);
 252         surface->offset = offset;
 253         surface->usage = flags;
 254         surface->zslice = zslice;
 255         surface->texture = texture;
 256         surface->face = face;
 257         surface->level = level;
 258     }
 259
 260     return surface;
 261 }
 262
 263 static void r300_tex_surface_destroy(struct pipe_surface* s)
 264 {
 265     pipe_texture_reference(&s->texture, NULL);
 266     FREE(s);
 267 }
 268
 269 static struct pipe_texture*
 270     r300_texture_blanket(struct pipe_screen* screen,
 271                          const struct pipe_texture* base,
 272                          const unsigned* stride,
 273                          struct pipe_buffer* buffer)
 274 {
 275     struct r300_texture* tex;
 276
 277     /* Support only 2D textures without mipmaps */
 278     if (base->target != PIPE_TEXTURE_2D ||
 279         base->depth0 != 1 ||
 280         base->last_level != 0) {
 281         return NULL;
 282     }
 283
 284     tex = CALLOC_STRUCT(r300_texture);
 285     if (!tex) {
 286         return NULL;
 287     }
 288
 289     tex->tex = *base;
 290     pipe_reference_init(&tex->tex.reference, 1);
 291     tex->tex.screen = screen;
 292
 293     tex->stride_override = *stride;
 294     tex->pitch[0] = *stride / util_format_get_blocksize(base->format);
 295
 296     r300_setup_flags(tex);
 297     r300_setup_texture_state(tex, r300_screen(screen)->caps->is_r500);
 298
 299     pipe_buffer_reference(&tex->buffer, buffer);
 300
 301     return (struct pipe_texture*)tex;
 302 }
 303
 304 static struct pipe_video_surface *
 305 r300_video_surface_create(struct pipe_screen *screen,
 306                           enum pipe_video_chroma_format chroma_format,
 307                           unsigned width, unsigned height)
 308 {
 309     struct r300_video_surface *r300_vsfc;
 310     struct pipe_texture template;
 311
 312     assert(screen);
 313     assert(width && height);
 314
 315     r300_vsfc = CALLOC_STRUCT(r300_video_surface);
 316     if (!r300_vsfc)
 317        return NULL;
 318
 319     pipe_reference_init(&r300_vsfc->base.reference, 1);
 320     r300_vsfc->base.screen = screen;
 321     r300_vsfc->base.chroma_format = chroma_format;
 322     r300_vsfc->base.width = width;
 323     r300_vsfc->base.height = height;
 324
 325     memset(&template, 0, sizeof(struct pipe_texture));
 326     template.target = PIPE_TEXTURE_2D;
 327     template.format = PIPE_FORMAT_X8R8G8B8_UNORM;
 328     template.last_level = 0;
 329     template.width0 = util_next_power_of_two(width);
 330     template.height0 = util_next_power_of_two(height);
 331     template.depth0 = 1;
 332     template.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER |
 333                          PIPE_TEXTURE_USAGE_RENDER_TARGET;
 334
 335     r300_vsfc->tex = screen->texture_create(screen, &template);
 336     if (!r300_vsfc->tex)
 337     {
 338         FREE(r300_vsfc);
 339         return NULL;
 340     }
 341
 342     return &r300_vsfc->base;
 343 }
 344
 345 static void r300_video_surface_destroy(struct pipe_video_surface *vsfc)
 346 {
 347     struct r300_video_surface *r300_vsfc = r300_video_surface(vsfc);
 348     pipe_texture_reference(&r300_vsfc->tex, NULL);
 349     FREE(r300_vsfc);
 350 }
 351
 352 void r300_init_screen_texture_functions(struct pipe_screen* screen)
 353 {
 354     screen->texture_create = r300_texture_create;
 355     screen->texture_destroy = r300_texture_destroy;
 356     screen->get_tex_surface = r300_get_tex_surface;
 357     screen->tex_surface_destroy = r300_tex_surface_destroy;
 358     screen->texture_blanket = r300_texture_blanket;
 359
 360     screen->video_surface_create = r300_video_surface_create;
 361     screen->video_surface_destroy= r300_video_surface_destroy;
 362 }
 363
 364 boolean r300_get_texture_buffer(struct pipe_texture* texture,
 365                                 struct pipe_buffer** buffer,
 366                                 unsigned* stride)
 367 {
 368     struct r300_texture* tex = (struct r300_texture*)texture;
 369     if (!tex) {
 370         return FALSE;
 371     }
 372
 373     pipe_buffer_reference(buffer, tex->buffer);
 374
 375     if (stride) {
 376         *stride = r300_texture_get_stride(tex, 0);
 377     }
 378
 379     return TRUE;
 380 }