src/gallium/drivers/r600/r600_texture.c

   1 /*
   2  * Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
   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  * Authors:
  24  *      Jerome Glisse
  25  *      Corbin Simpson
  26  */
  27 #include <pipe/p_screen.h>
  28 #include <util/u_format.h>
  29 #include <util/u_math.h>
  30 #include <util/u_inlines.h>
  31 #include <util/u_memory.h>
  32 #include "state_tracker/drm_driver.h"
  33 #include "r600_screen.h"
  34 #include "r600_context.h"
  35 #include "r600_resource.h"
  36
  37 extern struct u_resource_vtbl r600_texture_vtbl;
  38
  39 static unsigned long r600_texture_get_offset(struct r600_resource_texture *rtex,
  40                                         unsigned level, unsigned zslice,
  41                                         unsigned face)
  42 {
  43         unsigned long offset = rtex->offset[level];
  44
  45         switch (rtex->resource.base.b.target) {
  46         case PIPE_TEXTURE_3D:
  47                 assert(face == 0);
  48                 return offset + zslice * rtex->layer_size[level];
  49         case PIPE_TEXTURE_CUBE:
  50                 assert(zslice == 0);
  51                 return offset + face * rtex->layer_size[level];
  52         default:
  53                 assert(zslice == 0 && face == 0);
  54                 return offset;
  55         }
  56 }
  57
  58 static void r600_setup_miptree(struct r600_screen *rscreen, struct r600_resource_texture *rtex)
  59 {
  60         struct pipe_resource *ptex = &rtex->resource.base.b;
  61         unsigned long w, h, pitch, size, layer_size, i, offset;
  62
  63         rtex->bpt = util_format_get_blocksize(ptex->format);
  64         for (i = 0, offset = 0; i <= ptex->last_level; i++) {
  65                 w = u_minify(ptex->width0, i);
  66                 h = u_minify(ptex->height0, i);
  67                 pitch = util_format_get_stride(ptex->format, align(w, 64));
  68                 layer_size = pitch * h;
  69                 if (ptex->target == PIPE_TEXTURE_CUBE)
  70                         size = layer_size * 6;
  71                 else
  72                         size = layer_size * u_minify(ptex->depth0, i);
  73                 rtex->offset[i] = offset;
  74                 rtex->layer_size[i] = layer_size;
  75                 rtex->pitch[i] = pitch;
  76                 offset += size;
  77         }
  78         rtex->size = offset;
  79 }
  80
  81 struct pipe_resource *r600_texture_create(struct pipe_screen *screen,
  82                                                 const struct pipe_resource *templ)
  83 {
  84         struct r600_resource_texture *rtex;
  85         struct r600_resource *resource;
  86         struct r600_screen *rscreen = r600_screen(screen);
  87
  88         rtex = CALLOC_STRUCT(r600_resource_texture);
  89         if (!rtex) {
  90                 return NULL;
  91         }
  92         resource = &rtex->resource;
  93         resource->base.b = *templ;
  94         resource->base.vtbl = &r600_texture_vtbl;
  95         pipe_reference_init(&resource->base.b.reference, 1);
  96         resource->base.b.screen = screen;
  97         r600_setup_miptree(rscreen, rtex);
  98
  99         /* FIXME alignment 4096 enought ? too much ? */
 100         resource->domain = r600_domain_from_usage(resource->base.b.bind);
 101         resource->bo = radeon_bo(rscreen->rw, 0, rtex->size, 4096, NULL);
 102         if (resource->bo == NULL) {
 103                 FREE(rtex);
 104                 return NULL;
 105         }
 106
 107         return &resource->base.b;
 108 }
 109
 110 static void r600_texture_destroy(struct pipe_screen *screen,
 111                                  struct pipe_resource *ptex)
 112 {
 113         struct r600_resource_texture *rtex = (struct r600_resource_texture*)ptex;
 114         struct r600_resource *resource = &rtex->resource;
 115         struct r600_screen *rscreen = r600_screen(screen);
 116
 117         if (resource->bo) {
 118                 radeon_bo_decref(rscreen->rw, resource->bo);
 119         }
 120         FREE(rtex);
 121 }
 122
 123 static struct pipe_surface *r600_get_tex_surface(struct pipe_screen *screen,
 124                                                 struct pipe_resource *texture,
 125                                                 unsigned face, unsigned level,
 126                                                 unsigned zslice, unsigned flags)
 127 {
 128         struct r600_resource_texture *rtex = (struct r600_resource_texture*)texture;
 129         struct pipe_surface *surface = CALLOC_STRUCT(pipe_surface);
 130         unsigned long offset;
 131
 132         if (surface == NULL)
 133                 return NULL;
 134         offset = r600_texture_get_offset(rtex, level, zslice, face);
 135         pipe_reference_init(&surface->reference, 1);
 136         pipe_resource_reference(&surface->texture, texture);
 137         surface->format = texture->format;
 138         surface->width = u_minify(texture->width0, level);
 139         surface->height = u_minify(texture->height0, level);
 140         surface->offset = offset;
 141         surface->usage = flags;
 142         surface->zslice = zslice;
 143         surface->texture = texture;
 144         surface->face = face;
 145         surface->level = level;
 146         return surface;
 147 }
 148
 149 static void r600_tex_surface_destroy(struct pipe_surface *surface)
 150 {
 151         pipe_resource_reference(&surface->texture, NULL);
 152         FREE(surface);
 153 }
 154
 155 struct pipe_resource *r600_texture_from_handle(struct pipe_screen *screen,
 156                                                const struct pipe_resource *templ,
 157                                                struct winsys_handle *whandle)
 158 {
 159         struct radeon *rw = (struct radeon*)screen->winsys;
 160         struct r600_resource_texture *rtex;
 161         struct r600_resource *resource;
 162         struct radeon_bo *bo = NULL;
 163
 164         bo = radeon_bo(rw, whandle->handle, 0, 0, NULL);
 165         if (bo == NULL) {
 166                 return NULL;
 167         }
 168
 169         /* Support only 2D textures without mipmaps */
 170         if (templ->target != PIPE_TEXTURE_2D || templ->depth0 != 1 || templ->last_level != 0)
 171                 return NULL;
 172
 173         rtex = CALLOC_STRUCT(r600_resource_texture);
 174         if (rtex == NULL)
 175                 return NULL;
 176
 177         resource = &rtex->resource;
 178         resource->base.b = *templ;
 179         resource->base.vtbl = &r600_texture_vtbl;
 180         pipe_reference_init(&resource->base.b.reference, 1);
 181         resource->base.b.screen = screen;
 182         resource->bo = bo;
 183         rtex->pitch_override = whandle->stride;
 184         rtex->bpt = util_format_get_blocksize(templ->format);
 185         rtex->pitch[0] = whandle->stride;
 186         rtex->offset[0] = 0;
 187         rtex->size = align(rtex->pitch[0] * templ->height0, 64);
 188
 189         return &resource->base.b;
 190 }
 191
 192 static unsigned int r600_texture_is_referenced(struct pipe_context *context,
 193                                                 struct pipe_resource *texture,
 194                                                 unsigned face, unsigned level)
 195 {
 196         /* FIXME */
 197         return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 198 }
 199
 200 struct pipe_transfer* r600_texture_get_transfer(struct pipe_context *ctx,
 201                                                 struct pipe_resource *texture,
 202                                                 struct pipe_subresource sr,
 203                                                 unsigned usage,
 204                                                 const struct pipe_box *box)
 205 {
 206         struct r600_resource_texture *rtex = (struct r600_resource_texture*)texture;
 207         struct r600_transfer *trans;
 208
 209         trans = CALLOC_STRUCT(r600_transfer);
 210         if (trans == NULL)
 211                 return NULL;
 212         pipe_resource_reference(&trans->transfer.resource, texture);
 213         trans->transfer.sr = sr;
 214         trans->transfer.usage = usage;
 215         trans->transfer.box = *box;
 216         trans->transfer.stride = rtex->pitch[sr.level];
 217         trans->offset = r600_texture_get_offset(rtex, sr.level, box->z, sr.face);
 218         return &trans->transfer;
 219 }
 220
 221 void r600_texture_transfer_destroy(struct pipe_context *ctx,
 222                                    struct pipe_transfer *trans)
 223 {
 224         pipe_resource_reference(&trans->resource, NULL);
 225         FREE(trans);
 226 }
 227
 228 void* r600_texture_transfer_map(struct pipe_context *ctx,
 229                                 struct pipe_transfer* transfer)
 230 {
 231         struct r600_transfer *rtransfer = (struct r600_transfer*)transfer;
 232         struct r600_resource *resource;
 233         enum pipe_format format = transfer->resource->format;
 234         struct r600_screen *rscreen = r600_screen(ctx->screen);
 235         char *map;
 236
 237         r600_flush(ctx, 0, NULL);
 238
 239         resource = (struct r600_resource *)transfer->resource;
 240         if (radeon_bo_map(rscreen->rw, resource->bo)) {
 241                 return NULL;
 242         }
 243         map = resource->bo->data;
 244
 245         return map + rtransfer->offset +
 246                 transfer->box.y / util_format_get_blockheight(format) * transfer->stride +
 247                 transfer->box.x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
 248 }
 249
 250 void r600_texture_transfer_unmap(struct pipe_context *ctx,
 251                                  struct pipe_transfer* transfer)
 252 {
 253         struct r600_screen *rscreen = r600_screen(ctx->screen);
 254         struct r600_resource *resource;
 255
 256         resource = (struct r600_resource *)transfer->resource;
 257         radeon_bo_unmap(rscreen->rw, resource->bo);
 258 }
 259
 260 struct u_resource_vtbl r600_texture_vtbl =
 261 {
 262         u_default_resource_get_handle,  /* get_handle */
 263         r600_texture_destroy,           /* resource_destroy */
 264         r600_texture_is_referenced,     /* is_resource_referenced */
 265         r600_texture_get_transfer,      /* get_transfer */
 266         r600_texture_transfer_destroy,  /* transfer_destroy */
 267         r600_texture_transfer_map,      /* transfer_map */
 268         u_default_transfer_flush_region,/* transfer_flush_region */
 269         r600_texture_transfer_unmap,    /* transfer_unmap */
 270         u_default_transfer_inline_write /* transfer_inline_write */
 271 };
 272
 273 void r600_init_screen_texture_functions(struct pipe_screen *screen)
 274 {
 275         screen->get_tex_surface = r600_get_tex_surface;
 276         screen->tex_surface_destroy = r600_tex_surface_destroy;
 277 }