src/gallium/drivers/nv50/nv50_buffer.c

   1
   2 #include "util/u_inlines.h"
   3 #include "util/u_memory.h"
   4 #include "util/u_math.h"
   5
   6 #include "nouveau/nouveau_screen.h"
   7 #include "nouveau/nouveau_winsys.h"
   8 #include "nv50_resource.h"
   9
  10
  11
  12 static void nv50_buffer_destroy(struct pipe_screen *pscreen,
  13                                 struct pipe_resource *presource)
  14 {
  15         struct nv50_resource *buffer = nv50_resource(presource);
  16
  17         nouveau_screen_bo_release(pscreen, buffer->bo);
  18         FREE(buffer);
  19 }
  20
  21
  22
  23
  24 /* Utility functions for transfer create/destroy are hooked in and
  25  * just record the arguments to those functions.
  26  */
  27 static void *
  28 nv50_buffer_transfer_map( struct pipe_context *pipe,
  29                           struct pipe_transfer *transfer )
  30 {
  31         struct nv50_resource *buffer = nv50_resource(transfer->resource);
  32         uint8_t *map;
  33
  34         map = nouveau_screen_bo_map_range( pipe->screen,
  35                                            buffer->bo,
  36                                            transfer->box.x,
  37                                            transfer->box.width,
  38                                            nouveau_screen_transfer_flags(transfer->usage) );
  39         if (map == NULL)
  40                 return NULL;
  41
  42         return map + transfer->box.x;
  43 }
  44
  45
  46
  47 static void nv50_buffer_transfer_flush_region( struct pipe_context *pipe,
  48                                                struct pipe_transfer *transfer,
  49                                                const struct pipe_box *box)
  50 {
  51         struct nv50_resource *buffer = nv50_resource(transfer->resource);
  52
  53         nouveau_screen_bo_map_flush_range(pipe->screen,
  54                                           buffer->bo,
  55                                           transfer->box.x + box->x,
  56                                           box->width);
  57 }
  58
  59 static void nv50_buffer_transfer_unmap( struct pipe_context *pipe,
  60                                         struct pipe_transfer *transfer )
  61 {
  62         struct nv50_resource *buffer = nv50_resource(transfer->resource);
  63
  64         nouveau_screen_bo_unmap(pipe->screen, buffer->bo);
  65 }
  66
  67
  68
  69
  70 struct u_resource_vtbl nv50_buffer_vtbl =
  71 {
  72         u_default_resource_get_handle,      /* get_handle */
  73         nv50_buffer_destroy,                /* resource_destroy */
  74         NULL,                               /* is_resource_referenced */
  75         u_default_get_transfer,             /* get_transfer */
  76         u_default_transfer_destroy,         /* transfer_destroy */
  77         nv50_buffer_transfer_map,           /* transfer_map */
  78         nv50_buffer_transfer_flush_region,  /* transfer_flush_region */
  79         nv50_buffer_transfer_unmap,         /* transfer_unmap */
  80         u_default_transfer_inline_write     /* transfer_inline_write */
  81 };
  82
  83
  84
  85
  86 struct pipe_resource *
  87 nv50_buffer_create(struct pipe_screen *pscreen,
  88                    const struct pipe_resource *template)
  89 {
  90         struct nv50_resource *buffer;
  91
  92         buffer = CALLOC_STRUCT(nv50_resource);
  93         if (!buffer)
  94                 return NULL;
  95
  96         buffer->base = *template;
  97         buffer->vtbl = &nv50_buffer_vtbl;
  98         pipe_reference_init(&buffer->base.reference, 1);
  99         buffer->base.screen = pscreen;
 100
 101         buffer->bo = nouveau_screen_bo_new(pscreen,
 102                                            16,
 103                                            buffer->base._usage,
 104                                            buffer->base.bind,
 105                                            buffer->base.width0);
 106
 107         if (buffer->bo == NULL)
 108                 goto fail;
 109
 110         return &buffer->base;
 111
 112 fail:
 113         FREE(buffer);
 114         return NULL;
 115 }
 116
 117
 118 struct pipe_resource *
 119 nv50_user_buffer_create(struct pipe_screen *pscreen,
 120                         void *ptr,
 121                         unsigned bytes,
 122                         unsigned bind)
 123 {
 124         struct nv50_resource *buffer;
 125
 126         buffer = CALLOC_STRUCT(nv50_resource);
 127         if (!buffer)
 128                 return NULL;
 129
 130         pipe_reference_init(&buffer->base.reference, 1);
 131         buffer->vtbl = &nv50_buffer_vtbl;
 132         buffer->base.screen = pscreen;
 133         buffer->base.format = PIPE_FORMAT_R8_UNORM;
 134         buffer->base._usage = PIPE_USAGE_IMMUTABLE;
 135         buffer->base.bind = bind;
 136         buffer->base.width0 = bytes;
 137         buffer->base.height0 = 1;
 138         buffer->base.depth0 = 1;
 139
 140         buffer->bo = nouveau_screen_bo_user(pscreen, ptr, bytes);
 141         if (!buffer->bo)
 142                 goto fail;
 143
 144         return &buffer->base;
 145
 146 fail:
 147         FREE(buffer);
 148         return NULL;
 149 }
 150