src/gallium/state_trackers/xa/xa_context.c

   1 /**********************************************************
   2  * Copyright 2009-2011 VMware, Inc. All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  *********************************************************
  25  * Authors:
  26  * Zack Rusin <zackr-at-vmware-dot-com>
  27  * Thomas Hellstrom <thellstrom-at-vmware-dot-com>
  28  */
  29 #include "xa_context.h"
  30 #include "xa_priv.h"
  31 #include "cso_cache/cso_context.h"
  32 #include "util/u_inlines.h"
  33 #include "util/u_rect.h"
  34 #include "pipe/p_context.h"
  35
  36
  37 struct xa_context *
  38 xa_context_default(struct xa_tracker *xa)
  39 {
  40     return xa->default_ctx;
  41 }
  42
  43 struct xa_context *
  44 xa_context_create(struct xa_tracker *xa)
  45 {
  46     struct xa_context *ctx = calloc(1, sizeof(*ctx));
  47
  48     ctx->xa = xa;
  49     ctx->pipe = xa->screen->context_create(xa->screen, NULL);
  50     ctx->cso = cso_create_context(ctx->pipe);
  51     ctx->shaders = xa_shaders_create(ctx);
  52     renderer_init_state(ctx);
  53
  54     return ctx;
  55 }
  56
  57 void
  58 xa_context_destroy(struct xa_context *r)
  59 {
  60     struct pipe_resource **vsbuf = &r->vs_const_buffer;
  61     struct pipe_resource **fsbuf = &r->fs_const_buffer;
  62
  63     if (*vsbuf)
  64         pipe_resource_reference(vsbuf, NULL);
  65
  66     if (*fsbuf)
  67         pipe_resource_reference(fsbuf, NULL);
  68
  69     if (r->shaders) {
  70         xa_shaders_destroy(r->shaders);
  71         r->shaders = NULL;
  72     }
  73
  74     if (r->cso) {
  75         cso_release_all(r->cso);
  76         cso_destroy_context(r->cso);
  77         r->cso = NULL;
  78     }
  79 }
  80
  81 int
  82 xa_surface_dma(struct xa_context *ctx,
  83                struct xa_surface *srf,
  84                void *data,
  85                unsigned int pitch,
  86                int to_surface, struct xa_box *boxes, unsigned int num_boxes)
  87 {
  88     struct pipe_transfer *transfer;
  89     void *map;
  90     int w, h, i;
  91     enum pipe_transfer_usage transfer_direction;
  92     struct pipe_context *pipe = ctx->pipe;
  93
  94     transfer_direction = (to_surface ? PIPE_TRANSFER_WRITE :
  95                           PIPE_TRANSFER_READ);
  96
  97     for (i = 0; i < num_boxes; ++i, ++boxes) {
  98         w = boxes->x2 - boxes->x1;
  99         h = boxes->y2 - boxes->y1;
 100
 101         transfer = pipe_get_transfer(pipe, srf->tex, 0, 0,
 102                                      transfer_direction, boxes->x1, boxes->y1,
 103                                      w, h);
 104         if (!transfer)
 105             return -XA_ERR_NORES;
 106
 107         map = pipe_transfer_map(ctx->pipe, transfer);
 108         if (!map)
 109             goto out_no_map;
 110
 111         if (to_surface) {
 112             util_copy_rect(map, srf->tex->format, transfer->stride,
 113                            0, 0, w, h, data, pitch, boxes->x1, boxes->y1);
 114         } else {
 115             util_copy_rect(data, srf->tex->format, pitch,
 116                            boxes->x1, boxes->y1, w, h, map, transfer->stride, 0,
 117                            0);
 118         }
 119         pipe->transfer_unmap(pipe, transfer);
 120         pipe->transfer_destroy(pipe, transfer);
 121         if (to_surface)
 122             pipe->flush(pipe, &ctx->last_fence);
 123     }
 124     return XA_ERR_NONE;
 125  out_no_map:
 126     pipe->transfer_destroy(pipe, transfer);
 127     return -XA_ERR_NORES;
 128 }
 129
 130 void *
 131 xa_surface_map(struct xa_context *ctx,
 132                struct xa_surface *srf, unsigned int usage)
 133 {
 134     void *map;
 135     unsigned int transfer_direction = 0;
 136     struct pipe_context *pipe = ctx->pipe;
 137
 138     if (srf->transfer)
 139         return NULL;
 140
 141     if (usage & XA_MAP_READ)
 142         transfer_direction = PIPE_TRANSFER_READ;
 143     if (usage & XA_MAP_WRITE)
 144         transfer_direction = PIPE_TRANSFER_WRITE;
 145
 146     if (!transfer_direction)
 147         return NULL;
 148
 149     srf->transfer = pipe_get_transfer(pipe, srf->tex, 0, 0,
 150                                       transfer_direction, 0, 0,
 151                                       srf->tex->width0, srf->tex->height0);
 152     if (!srf->transfer)
 153         return NULL;
 154
 155     map = pipe_transfer_map(pipe, srf->transfer);
 156     if (!map)
 157         pipe->transfer_destroy(pipe, srf->transfer);
 158
 159     srf->mapping_pipe = pipe;
 160     return map;
 161 }
 162
 163 void
 164 xa_surface_unmap(struct xa_surface *srf)
 165 {
 166     if (srf->transfer) {
 167         struct pipe_context *pipe = srf->mapping_pipe;
 168
 169         pipe->transfer_unmap(pipe, srf->transfer);
 170         pipe->transfer_destroy(pipe, srf->transfer);
 171         srf->transfer = NULL;
 172     }
 173 }
 174
 175 int
 176 xa_copy_prepare(struct xa_context *ctx,
 177                 struct xa_surface *dst, struct xa_surface *src)
 178 {
 179     if (src == dst || src->tex->format != dst->tex->format)
 180         return -XA_ERR_INVAL;
 181
 182     ctx->src = src;
 183     ctx->dst = dst;
 184
 185     return 0;
 186 }
 187
 188 void
 189 xa_copy(struct xa_context *ctx,
 190         int dx, int dy, int sx, int sy, int width, int height)
 191 {
 192     struct pipe_box src_box;
 193
 194     u_box_2d(sx, sy, width, height, &src_box);
 195     ctx->pipe->resource_copy_region(ctx->pipe,
 196                                     ctx->dst->tex, 0, dx, dy, 0, ctx->src->tex,
 197                                     0, &src_box);
 198
 199 }
 200
 201 void
 202 xa_copy_done(struct xa_context *ctx)
 203 {
 204     ctx->pipe->flush(ctx->pipe, &ctx->last_fence);
 205 }
 206
 207 struct xa_fence *
 208 xa_fence_get(struct xa_context *ctx)
 209 {
 210     struct xa_fence *fence = malloc(sizeof(*fence));
 211     struct pipe_screen *screen = ctx->xa->screen;
 212
 213     if (!fence)
 214         return NULL;
 215
 216     fence->xa = ctx->xa;
 217
 218     if (ctx->last_fence == NULL)
 219         fence->pipe_fence = NULL;
 220     else
 221         screen->fence_reference(screen, &fence->pipe_fence, ctx->last_fence);
 222
 223     return fence;
 224 }
 225
 226 int
 227 xa_fence_wait(struct xa_fence *fence, uint64_t timeout)
 228 {
 229     if (!fence)
 230         return XA_ERR_NONE;
 231
 232     if (fence->pipe_fence) {
 233         struct pipe_screen *screen = fence->xa->screen;
 234         boolean timed_out;
 235
 236         timed_out = !screen->fence_finish(screen, fence->pipe_fence, timeout);
 237         if (timed_out)
 238             return -XA_ERR_BUSY;
 239
 240         screen->fence_reference(screen, &fence->pipe_fence, NULL);
 241     }
 242     return XA_ERR_NONE;
 243 }
 244
 245 void
 246 xa_fence_destroy(struct xa_fence *fence)
 247 {
 248     if (!fence)
 249         return;
 250
 251     if (fence->pipe_fence) {
 252         struct pipe_screen *screen = fence->xa->screen;
 253
 254         screen->fence_reference(screen, &fence->pipe_fence, NULL);
 255     }
 256
 257     free(fence);
 258 }