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