src/gallium/drivers/nv50/nv50_resource.c

   1
   2 #include "pipe/p_context.h"
   3 #include "util/u_inlines.h"
   4 #include "util/u_format.h"
   5
   6 #include "nouveau/nouveau_screen.h"
   7
   8 #include "nv50_resource.h"
   9
  10 static struct pipe_resource *
  11 nv50_resource_create(struct pipe_screen *screen,
  12                      const struct pipe_resource *templ)
  13 {
  14    switch (templ->target) {
  15    case PIPE_BUFFER:
  16       return nouveau_buffer_create(screen, templ);
  17    default:
  18       return nv50_miptree_create(screen, templ);
  19    }
  20 }
  21
  22 static struct pipe_resource *
  23 nv50_resource_from_handle(struct pipe_screen * screen,
  24                           const struct pipe_resource *templ,
  25                           struct winsys_handle *whandle)
  26 {
  27    if (templ->target == PIPE_BUFFER)
  28       return NULL;
  29    else
  30       return nv50_miptree_from_handle(screen, templ, whandle);
  31 }
  32
  33 struct pipe_surface *
  34 nv50_surface_from_buffer(struct pipe_context *pipe,
  35                          struct pipe_resource *pbuf,
  36                          const struct pipe_surface *templ)
  37 {
  38    struct nv50_surface *sf = CALLOC_STRUCT(nv50_surface);
  39    if (!sf)
  40       return NULL;
  41
  42    pipe_reference_init(&sf->base.reference, 1);
  43    pipe_resource_reference(&sf->base.texture, pbuf);
  44
  45    sf->base.format = templ->format;
  46    sf->base.u.buf.first_element = templ->u.buf.first_element;
  47    sf->base.u.buf.last_element = templ->u.buf.last_element;
  48
  49    sf->offset =
  50       templ->u.buf.first_element * util_format_get_blocksize(sf->base.format);
  51
  52    sf->offset &= ~0x7f; /* FIXME: RT_ADDRESS requires 128 byte alignment */
  53
  54    sf->width = templ->u.buf.last_element - templ->u.buf.first_element + 1;
  55    sf->height = 1;
  56    sf->depth = 1;
  57
  58    sf->base.width = sf->width;
  59    sf->base.height = sf->height;
  60
  61    sf->base.context = pipe;
  62    return &sf->base;
  63 }
  64
  65 static struct pipe_surface *
  66 nv50_surface_create(struct pipe_context *pipe,
  67                     struct pipe_resource *pres,
  68                     const struct pipe_surface *templ)
  69 {
  70    if (unlikely(pres->target == PIPE_BUFFER))
  71       return nv50_surface_from_buffer(pipe, pres, templ);
  72    return nv50_miptree_surface_new(pipe, pres, templ);
  73 }
  74
  75 void
  76 nv50_surface_destroy(struct pipe_context *pipe, struct pipe_surface *ps)
  77 {
  78    struct nv50_surface *s = nv50_surface(ps);
  79
  80    pipe_resource_reference(&ps->texture, NULL);
  81
  82    FREE(s);
  83 }
  84
  85 void
  86 nv50_init_resource_functions(struct pipe_context *pcontext)
  87 {
  88    pcontext->transfer_map = u_transfer_map_vtbl;
  89    pcontext->transfer_flush_region = u_transfer_flush_region_vtbl;
  90    pcontext->transfer_unmap = u_transfer_unmap_vtbl;
  91    pcontext->transfer_inline_write = u_transfer_inline_write_vtbl;
  92    pcontext->create_surface = nv50_surface_create;
  93    pcontext->surface_destroy = nv50_surface_destroy;
  94 }
  95
  96 void
  97 nv50_screen_init_resource_functions(struct pipe_screen *pscreen)
  98 {
  99    pscreen->resource_create = nv50_resource_create;
 100    pscreen->resource_from_handle = nv50_resource_from_handle;
 101    pscreen->resource_get_handle = u_resource_get_handle_vtbl;
 102    pscreen->resource_destroy = u_resource_destroy_vtbl;
 103 }