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_math.h"
  26 #include "util/u_memory.h"
  27
  28 #include "r300_context.h"
  29 #include "r300_texture.h"
  30 #include "r300_screen.h"
  31
  32 static void r300_setup_texture_state(struct r300_texture* tex, boolean is_r500)
  33 {
  34     struct r300_texture_state* state = &tex->state;
  35     struct pipe_texture *pt = &tex->tex;
  36
  37     state->format0 = R300_TX_WIDTH((pt->width[0] - 1) & 0x7ff) |
  38                      R300_TX_HEIGHT((pt->height[0] - 1) & 0x7ff);
  39
  40     if (tex->is_npot) {
  41         /* rectangles love this */
  42         state->format0 |= R300_TX_PITCH_EN;
  43         state->format2 = (tex->pitch[0] - 1) & 0x1fff;
  44     } else {
  45         /* power of two textures (3D, mipmaps, and no pitch) */
  46         state->format0 |= R300_TX_DEPTH(util_logbase2(pt->depth[0]) & 0xf) |
  47                           R300_TX_NUM_LEVELS(pt->last_level & 0xf);
  48     }
  49
  50     state->format1 = r300_translate_texformat(pt->format);
  51     if (pt->target == PIPE_TEXTURE_CUBE) {
  52         state->format1 |= R300_TX_FORMAT_CUBIC_MAP;
  53     }
  54     if (pt->target == PIPE_TEXTURE_3D) {
  55         state->format1 |= R300_TX_FORMAT_3D;
  56     }
  57
  58     /* large textures on r500 */
  59     if (is_r500)
  60     {
  61         if (pt->width[0] > 2048) {
  62             state->format2 |= R500_TXWIDTH_BIT11;
  63         }
  64         if (pt->height[0] > 2048) {
  65             state->format2 |= R500_TXHEIGHT_BIT11;
  66         }
  67     }
  68     assert(is_r500 || (pt->width[0] <= 2048 && pt->height[0] <= 2048));
  69
  70     debug_printf("r300: Set texture state (%dx%d, %d levels)\n",
  71                  pt->width[0], pt->height[0], pt->last_level);
  72 }
  73
  74 unsigned r300_texture_get_offset(struct r300_texture* tex, unsigned level,
  75                                  unsigned zslice, unsigned face)
  76 {
  77     unsigned offset = tex->offset[level];
  78
  79     switch (tex->tex.target) {
  80         case PIPE_TEXTURE_3D:
  81             assert(face == 0);
  82             return offset + zslice * tex->layer_size[level];
  83
  84         case PIPE_TEXTURE_CUBE:
  85             assert(zslice == 0);
  86             return offset + face * tex->layer_size[level];
  87
  88         default:
  89             assert(zslice == 0 && face == 0);
  90             return offset;
  91     }
  92 }
  93
  94 /**
  95  * Return the stride, in bytes, of the texture images of the given texture
  96  * at the given level.
  97  */
  98 unsigned r300_texture_get_stride(struct r300_texture* tex, unsigned level)
  99 {
 100     if (tex->stride_override)
 101         return tex->stride_override;
 102
 103     if (level > tex->tex.last_level) {
 104         debug_printf("%s: level (%u) > last_level (%u)\n", __FUNCTION__,
 105             level, tex->tex.last_level);
 106         return 0;
 107     }
 108
 109     return align(pf_get_stride(&tex->tex.block, tex->tex.width[level]), 32);
 110 }
 111
 112 static void r300_setup_miptree(struct r300_texture* tex)
 113 {
 114     struct pipe_texture* base = &tex->tex;
 115     int stride, size, layer_size;
 116     int i;
 117
 118     for (i = 0; i <= base->last_level; i++) {
 119         if (i > 0) {
 120             base->width[i] = minify(base->width[i-1]);
 121             base->height[i] = minify(base->height[i-1]);
 122             base->depth[i] = minify(base->depth[i-1]);
 123         }
 124
 125         base->nblocksx[i] = pf_get_nblocksx(&base->block, base->width[i]);
 126         base->nblocksy[i] = pf_get_nblocksy(&base->block, base->height[i]);
 127
 128         stride = r300_texture_get_stride(tex, i);
 129         layer_size = stride * base->nblocksy[i];
 130
 131         if (base->target == PIPE_TEXTURE_CUBE)
 132             size = layer_size * 6;
 133         else
 134             size = layer_size * base->depth[i];
 135
 136         tex->offset[i] = align(tex->size, 32);
 137         tex->size = tex->offset[i] + size;
 138         tex->layer_size[i] = layer_size;
 139
 140         if (tex->is_npot) {
 141             tex->pitch[i] = stride / base->block.size;
 142         } else {
 143             tex->pitch[i] = base->width[i];
 144         }
 145
 146         debug_printf("r300: Texture miptree: Level %d "
 147                 "(%dx%dx%d px, pitch %d bytes)\n",
 148                 i, base->width[i], base->height[i], base->depth[i],
 149                 stride);
 150     }
 151 }
 152
 153 static void r300_setup_flags(struct r300_texture* tex)
 154 {
 155     tex->is_npot = !util_is_power_of_two(tex->tex.width[0]) ||
 156                    !util_is_power_of_two(tex->tex.height[0]);
 157 }
 158
 159 /* Create a new texture. */
 160 static struct pipe_texture*
 161     r300_texture_create(struct pipe_screen* screen,
 162                         const struct pipe_texture* template)
 163 {
 164     struct r300_texture* tex = CALLOC_STRUCT(r300_texture);
 165
 166     if (!tex) {
 167         return NULL;
 168     }
 169
 170     tex->tex = *template;
 171     pipe_reference_init(&tex->tex.reference, 1);
 172     tex->tex.screen = screen;
 173
 174     r300_setup_flags(tex);
 175     r300_setup_miptree(tex);
 176     r300_setup_texture_state(tex, r300_screen(screen)->caps->is_r500);
 177
 178     tex->buffer = screen->buffer_create(screen, 1024,
 179                                         PIPE_BUFFER_USAGE_PIXEL,
 180                                         tex->size);
 181
 182     if (!tex->buffer) {
 183         FREE(tex);
 184         return NULL;
 185     }
 186
 187     return (struct pipe_texture*)tex;
 188 }
 189
 190 static void r300_texture_destroy(struct pipe_texture* texture)
 191 {
 192     struct r300_texture* tex = (struct r300_texture*)texture;
 193
 194     pipe_buffer_reference(&tex->buffer, NULL);
 195
 196     FREE(tex);
 197 }
 198
 199 static struct pipe_surface* r300_get_tex_surface(struct pipe_screen* screen,
 200                                                  struct pipe_texture* texture,
 201                                                  unsigned face,
 202                                                  unsigned level,
 203                                                  unsigned zslice,
 204                                                  unsigned flags)
 205 {
 206     struct r300_texture* tex = (struct r300_texture*)texture;
 207     struct pipe_surface* surface = CALLOC_STRUCT(pipe_surface);
 208     unsigned offset;
 209
 210     offset = r300_texture_get_offset(tex, level, zslice, face);
 211
 212     if (surface) {
 213         pipe_reference_init(&surface->reference, 1);
 214         pipe_texture_reference(&surface->texture, texture);
 215         surface->format = texture->format;
 216         surface->width = texture->width[level];
 217         surface->height = texture->height[level];
 218         surface->offset = offset;
 219         surface->usage = flags;
 220         surface->zslice = zslice;
 221         surface->texture = texture;
 222         surface->face = face;
 223         surface->level = level;
 224     }
 225
 226     return surface;
 227 }
 228
 229 static void r300_tex_surface_destroy(struct pipe_surface* s)
 230 {
 231     pipe_texture_reference(&s->texture, NULL);
 232     FREE(s);
 233 }
 234
 235 static struct pipe_texture*
 236     r300_texture_blanket(struct pipe_screen* screen,
 237                          const struct pipe_texture* base,
 238                          const unsigned* stride,
 239                          struct pipe_buffer* buffer)
 240 {
 241     struct r300_texture* tex;
 242
 243     /* Support only 2D textures without mipmaps */
 244     if (base->target != PIPE_TEXTURE_2D ||
 245         base->depth[0] != 1 ||
 246         base->last_level != 0) {
 247         return NULL;
 248     }
 249
 250     tex = CALLOC_STRUCT(r300_texture);
 251     if (!tex) {
 252         return NULL;
 253     }
 254
 255     tex->tex = *base;
 256     pipe_reference_init(&tex->tex.reference, 1);
 257     tex->tex.screen = screen;
 258
 259     tex->stride_override = *stride;
 260     tex->pitch[0] = *stride / base->block.size;
 261
 262     r300_setup_flags(tex);
 263     r300_setup_texture_state(tex, r300_screen(screen)->caps->is_r500);
 264
 265     pipe_buffer_reference(&tex->buffer, buffer);
 266
 267     return (struct pipe_texture*)tex;
 268 }
 269
 270 static struct pipe_video_surface *
 271 r300_video_surface_create(struct pipe_screen *screen,
 272                           enum pipe_video_chroma_format chroma_format,
 273                           unsigned width, unsigned height)
 274 {
 275     struct r300_video_surface *r300_vsfc;
 276     struct pipe_texture template;
 277
 278     assert(screen);
 279     assert(width && height);
 280
 281     r300_vsfc = CALLOC_STRUCT(r300_video_surface);
 282     if (!r300_vsfc)
 283        return NULL;
 284
 285     pipe_reference_init(&r300_vsfc->base.reference, 1);
 286     r300_vsfc->base.screen = screen;
 287     r300_vsfc->base.chroma_format = chroma_format;
 288     r300_vsfc->base.width = width;
 289     r300_vsfc->base.height = height;
 290
 291     memset(&template, 0, sizeof(struct pipe_texture));
 292     template.target = PIPE_TEXTURE_2D;
 293     template.format = PIPE_FORMAT_X8R8G8B8_UNORM;
 294     template.last_level = 0;
 295     template.width[0] = util_next_power_of_two(width);
 296     template.height[0] = util_next_power_of_two(height);
 297     template.depth[0] = 1;
 298     pf_get_block(template.format, &template.block);
 299     template.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER |
 300                          PIPE_TEXTURE_USAGE_RENDER_TARGET;
 301
 302     r300_vsfc->tex = screen->texture_create(screen, &template);
 303     if (!r300_vsfc->tex)
 304     {
 305         FREE(r300_vsfc);
 306         return NULL;
 307     }
 308
 309     return &r300_vsfc->base;
 310 }
 311
 312 static void r300_video_surface_destroy(struct pipe_video_surface *vsfc)
 313 {
 314     struct r300_video_surface *r300_vsfc = r300_video_surface(vsfc);
 315     pipe_texture_reference(&r300_vsfc->tex, NULL);
 316     FREE(r300_vsfc);
 317 }
 318
 319 void r300_init_screen_texture_functions(struct pipe_screen* screen)
 320 {
 321     screen->texture_create = r300_texture_create;
 322     screen->texture_destroy = r300_texture_destroy;
 323     screen->get_tex_surface = r300_get_tex_surface;
 324     screen->tex_surface_destroy = r300_tex_surface_destroy;
 325     screen->texture_blanket = r300_texture_blanket;
 326
 327     screen->video_surface_create = r300_video_surface_create;
 328     screen->video_surface_destroy= r300_video_surface_destroy;
 329 }
 330
 331 boolean r300_get_texture_buffer(struct pipe_texture* texture,
 332                                 struct pipe_buffer** buffer,
 333                                 unsigned* stride)
 334 {
 335     struct r300_texture* tex = (struct r300_texture*)texture;
 336     if (!tex) {
 337         return FALSE;
 338     }
 339
 340     pipe_buffer_reference(buffer, tex->buffer);
 341
 342     if (stride) {
 343         *stride = r300_texture_get_stride(tex, 0);
 344     }
 345
 346     return TRUE;
 347 }