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 static void r300_setup_texture_state(struct r300_texture* tex, boolean is_r500)
  34 {
  35     struct r300_texture_state* state = &tex->state;
  36     struct pipe_texture *pt = &tex->tex;
  37
  38     state->format0 = R300_TX_WIDTH((pt->width0 - 1) & 0x7ff) |
  39                      R300_TX_HEIGHT((pt->height0 - 1) & 0x7ff);
  40
  41     if (tex->is_npot) {
  42         /* rectangles love this */
  43         state->format0 |= R300_TX_PITCH_EN;
  44         state->format2 = (tex->pitch[0] - 1) & 0x1fff;
  45     } else {
  46         /* power of two textures (3D, mipmaps, and no pitch) */
  47         state->format0 |= R300_TX_DEPTH(util_logbase2(pt->depth0) & 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->width0 > 2048) {
  62             state->format2 |= R500_TXWIDTH_BIT11;
  63         }
  64         if (pt->height0 > 2048) {
  65             state->format2 |= R500_TXHEIGHT_BIT11;
  66         }
  67     }
  68     assert(is_r500 || (pt->width0 <= 2048 && pt->height0 <= 2048));
  69
  70     debug_printf("r300: Set texture state (%dx%d, %d levels)\n",
  71                  pt->width0, pt->height0, 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(util_format_get_stride(tex->tex.format, u_minify(tex->tex.width0, 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         unsigned nblocksy = util_format_get_nblocksy(base->format, u_minify(base->height0, i));
 120
 121         stride = r300_texture_get_stride(tex, i);
 122         layer_size = stride * nblocksy;
 123
 124         if (base->target == PIPE_TEXTURE_CUBE)
 125             size = layer_size * 6;
 126         else
 127             size = layer_size * u_minify(base->depth0, i);
 128
 129         tex->offset[i] = align(tex->size, 32);
 130         tex->size = tex->offset[i] + size;
 131         tex->layer_size[i] = layer_size;
 132         tex->pitch[i] = stride / util_format_get_blocksize(base->format);
 133
 134         debug_printf("r300: Texture miptree: Level %d "
 135                 "(%dx%dx%d px, pitch %d bytes)\n",
 136                 i, u_minify(base->width0, i), u_minify(base->height0, i),
 137                 u_minify(base->depth0, i), stride);
 138     }
 139 }
 140
 141 static void r300_setup_flags(struct r300_texture* tex)
 142 {
 143     tex->is_npot = !util_is_power_of_two(tex->tex.width0) ||
 144                    !util_is_power_of_two(tex->tex.height0);
 145 }
 146
 147 /* Create a new texture. */
 148 static struct pipe_texture*
 149     r300_texture_create(struct pipe_screen* screen,
 150                         const struct pipe_texture* template)
 151 {
 152     struct r300_texture* tex = CALLOC_STRUCT(r300_texture);
 153
 154     if (!tex) {
 155         return NULL;
 156     }
 157
 158     tex->tex = *template;
 159     pipe_reference_init(&tex->tex.reference, 1);
 160     tex->tex.screen = screen;
 161
 162     r300_setup_flags(tex);
 163     r300_setup_miptree(tex);
 164     r300_setup_texture_state(tex, r300_screen(screen)->caps->is_r500);
 165
 166     tex->buffer = screen->buffer_create(screen, 1024,
 167                                         PIPE_BUFFER_USAGE_PIXEL,
 168                                         tex->size);
 169
 170     if (!tex->buffer) {
 171         FREE(tex);
 172         return NULL;
 173     }
 174
 175     return (struct pipe_texture*)tex;
 176 }
 177
 178 static void r300_texture_destroy(struct pipe_texture* texture)
 179 {
 180     struct r300_texture* tex = (struct r300_texture*)texture;
 181
 182     pipe_buffer_reference(&tex->buffer, NULL);
 183
 184     FREE(tex);
 185 }
 186
 187 static struct pipe_surface* r300_get_tex_surface(struct pipe_screen* screen,
 188                                                  struct pipe_texture* texture,
 189                                                  unsigned face,
 190                                                  unsigned level,
 191                                                  unsigned zslice,
 192                                                  unsigned flags)
 193 {
 194     struct r300_texture* tex = (struct r300_texture*)texture;
 195     struct pipe_surface* surface = CALLOC_STRUCT(pipe_surface);
 196     unsigned offset;
 197
 198     offset = r300_texture_get_offset(tex, level, zslice, face);
 199
 200     if (surface) {
 201         pipe_reference_init(&surface->reference, 1);
 202         pipe_texture_reference(&surface->texture, texture);
 203         surface->format = texture->format;
 204         surface->width = u_minify(texture->width0, level);
 205         surface->height = u_minify(texture->height0, level);
 206         surface->offset = offset;
 207         surface->usage = flags;
 208         surface->zslice = zslice;
 209         surface->texture = texture;
 210         surface->face = face;
 211         surface->level = level;
 212     }
 213
 214     return surface;
 215 }
 216
 217 static void r300_tex_surface_destroy(struct pipe_surface* s)
 218 {
 219     pipe_texture_reference(&s->texture, NULL);
 220     FREE(s);
 221 }
 222
 223 static struct pipe_texture*
 224     r300_texture_blanket(struct pipe_screen* screen,
 225                          const struct pipe_texture* base,
 226                          const unsigned* stride,
 227                          struct pipe_buffer* buffer)
 228 {
 229     struct r300_texture* tex;
 230
 231     /* Support only 2D textures without mipmaps */
 232     if (base->target != PIPE_TEXTURE_2D ||
 233         base->depth0 != 1 ||
 234         base->last_level != 0) {
 235         return NULL;
 236     }
 237
 238     tex = CALLOC_STRUCT(r300_texture);
 239     if (!tex) {
 240         return NULL;
 241     }
 242
 243     tex->tex = *base;
 244     pipe_reference_init(&tex->tex.reference, 1);
 245     tex->tex.screen = screen;
 246
 247     tex->stride_override = *stride;
 248     tex->pitch[0] = *stride / util_format_get_blocksize(base->format);
 249
 250     r300_setup_flags(tex);
 251     r300_setup_texture_state(tex, r300_screen(screen)->caps->is_r500);
 252
 253     pipe_buffer_reference(&tex->buffer, buffer);
 254
 255     return (struct pipe_texture*)tex;
 256 }
 257
 258 static struct pipe_video_surface *
 259 r300_video_surface_create(struct pipe_screen *screen,
 260                           enum pipe_video_chroma_format chroma_format,
 261                           unsigned width, unsigned height)
 262 {
 263     struct r300_video_surface *r300_vsfc;
 264     struct pipe_texture template;
 265
 266     assert(screen);
 267     assert(width && height);
 268
 269     r300_vsfc = CALLOC_STRUCT(r300_video_surface);
 270     if (!r300_vsfc)
 271        return NULL;
 272
 273     pipe_reference_init(&r300_vsfc->base.reference, 1);
 274     r300_vsfc->base.screen = screen;
 275     r300_vsfc->base.chroma_format = chroma_format;
 276     r300_vsfc->base.width = width;
 277     r300_vsfc->base.height = height;
 278
 279     memset(&template, 0, sizeof(struct pipe_texture));
 280     template.target = PIPE_TEXTURE_2D;
 281     template.format = PIPE_FORMAT_X8R8G8B8_UNORM;
 282     template.last_level = 0;
 283     template.width0 = util_next_power_of_two(width);
 284     template.height0 = util_next_power_of_two(height);
 285     template.depth0 = 1;
 286     template.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER |
 287                          PIPE_TEXTURE_USAGE_RENDER_TARGET;
 288
 289     r300_vsfc->tex = screen->texture_create(screen, &template);
 290     if (!r300_vsfc->tex)
 291     {
 292         FREE(r300_vsfc);
 293         return NULL;
 294     }
 295
 296     return &r300_vsfc->base;
 297 }
 298
 299 static void r300_video_surface_destroy(struct pipe_video_surface *vsfc)
 300 {
 301     struct r300_video_surface *r300_vsfc = r300_video_surface(vsfc);
 302     pipe_texture_reference(&r300_vsfc->tex, NULL);
 303     FREE(r300_vsfc);
 304 }
 305
 306 void r300_init_screen_texture_functions(struct pipe_screen* screen)
 307 {
 308     screen->texture_create = r300_texture_create;
 309     screen->texture_destroy = r300_texture_destroy;
 310     screen->get_tex_surface = r300_get_tex_surface;
 311     screen->tex_surface_destroy = r300_tex_surface_destroy;
 312     screen->texture_blanket = r300_texture_blanket;
 313
 314     screen->video_surface_create = r300_video_surface_create;
 315     screen->video_surface_destroy= r300_video_surface_destroy;
 316 }
 317
 318 boolean r300_get_texture_buffer(struct pipe_texture* texture,
 319                                 struct pipe_buffer** buffer,
 320                                 unsigned* stride)
 321 {
 322     struct r300_texture* tex = (struct r300_texture*)texture;
 323     if (!tex) {
 324         return FALSE;
 325     }
 326
 327     pipe_buffer_reference(buffer, tex->buffer);
 328
 329     if (stride) {
 330         *stride = r300_texture_get_stride(tex, 0);
 331     }
 332
 333     return TRUE;
 334 }