src/gallium/drivers/nv50/nv50_surface.c

   1 /*
   2  * Copyright 2008 Ben Skeggs
   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  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  18  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  19  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  */
  22
  23 #include "nv50_context.h"
  24 #include "pipe/p_defines.h"
  25 #include "pipe/p_winsys.h"
  26 #include "pipe/p_inlines.h"
  27
  28 #include "util/u_tile.h"
  29
  30 static void
  31 nv50_surface_copy(struct pipe_context *pipe, boolean flip,
  32                   struct pipe_surface *dest, unsigned destx, unsigned desty,
  33                   struct pipe_surface *src, unsigned srcx, unsigned srcy,
  34                   unsigned width, unsigned height)
  35 {
  36         struct nv50_context *nv50 = (struct nv50_context *)pipe;
  37         struct nouveau_winsys *nvws = nv50->screen->nvws;
  38
  39         if (flip) {
  40                 desty += height;
  41                 while (height--) {
  42                         nvws->surface_copy(nvws, dest, destx, desty--, src,
  43                                            srcx, srcy++, width, 1);
  44                 }
  45         } else {
  46                 nvws->surface_copy(nvws, dest, destx, desty, src, srcx, srcy,
  47                                    width, height);
  48         }
  49 }
  50
  51 static void
  52 nv50_surface_fill(struct pipe_context *pipe, struct pipe_surface *dest,
  53                   unsigned destx, unsigned desty, unsigned width,
  54                   unsigned height, unsigned value)
  55 {
  56         struct nv50_context *nv50 = (struct nv50_context *)pipe;
  57         struct nouveau_winsys *nvws = nv50->screen->nvws;
  58
  59         nvws->surface_fill(nvws, dest, destx, desty, width, height, value);
  60 }
  61
  62 static void *
  63 nv50_surface_map(struct pipe_screen *screen, struct pipe_surface *ps,
  64                  unsigned flags )
  65 {
  66         struct nouveau_winsys *nvws = nv50_screen(screen)->nvws;
  67         struct pipe_winsys *ws = screen->winsys;
  68         struct nv50_surface *s = nv50_surface(ps);
  69         struct nv50_surface m = *s;
  70         void *map;
  71
  72         if (!s->untiled) {
  73                 s->untiled = ws->buffer_create(ws, 0, 0, ps->buffer->size);
  74
  75                 m.base.buffer = s->untiled;
  76                 nvws->surface_copy(nvws, &m.base, 0, 0, &s->base, 0, 0,
  77                                          ps->width, ps->height);
  78         }
  79
  80         /* Map original tiled surface to disallow it being validated while
  81          * untiled mirror is mapped.
  82          */
  83         ws->buffer_map(ws, ps->buffer, flags);
  84
  85         map = ws->buffer_map(ws, s->untiled, flags);
  86         if (!map)
  87                 return NULL;
  88
  89         return map;
  90 }
  91
  92 static void
  93 nv50_surface_unmap(struct pipe_screen *pscreen, struct pipe_surface *ps)
  94 {
  95         struct nouveau_winsys *nvws = nv50_screen(pscreen)->nvws;
  96         struct pipe_winsys *ws = pscreen->winsys;
  97         struct nv50_surface *s = nv50_surface(ps);
  98         struct nv50_surface m = *s;
  99
 100         ws->buffer_unmap(ws, s->untiled);
 101         ws->buffer_unmap(ws, ps->buffer);
 102
 103         m.base.buffer = s->untiled;
 104         nvws->surface_copy(nvws, &s->base, 0, 0, &m.base, 0, 0,
 105                                  ps->width, ps->height);
 106
 107         pipe_buffer_reference(pscreen, &s->untiled, NULL);
 108 }
 109
 110 void
 111 nv50_init_surface_functions(struct nv50_context *nv50)
 112 {
 113         nv50->pipe.surface_copy = nv50_surface_copy;
 114         nv50->pipe.surface_fill = nv50_surface_fill;
 115 }
 116
 117 void
 118 nv50_surface_init_screen_functions(struct pipe_screen *pscreen)
 119 {
 120         pscreen->surface_map = nv50_surface_map;
 121         pscreen->surface_unmap = nv50_surface_unmap;
 122 }
 123