src/gallium/drivers/nvfx/nvfx_resource.c

   1
   2 #include "pipe/p_context.h"
   3 #include "nvfx_resource.h"
   4 #include "nouveau/nouveau_screen.h"
   5
   6
   7 /* This doesn't look quite right - this query is supposed to ask
   8  * whether the particular context has references to the resource in
   9  * any unflushed rendering command buffer, and hence requires a
  10  * pipe->flush() for serializing some modification to that resource.
  11  *
  12  * This seems to be answering the question of whether the resource is
  13  * currently on hardware.
  14  */
  15 static unsigned int
  16 nvfx_resource_is_referenced(struct pipe_context *pipe,
  17                             struct pipe_resource *resource,
  18                             unsigned face, unsigned level)
  19 {
  20         return nouveau_reference_flags(nvfx_resource(resource)->bo);
  21 }
  22
  23 static struct pipe_resource *
  24 nvfx_resource_create(struct pipe_screen *screen,
  25                      const struct pipe_resource *template)
  26 {
  27         if (template->target == PIPE_BUFFER)
  28                 return nvfx_buffer_create(screen, template);
  29         else
  30                 return nvfx_miptree_create(screen, template);
  31 }
  32
  33 static struct pipe_resource *
  34 nvfx_resource_from_handle(struct pipe_screen * screen,
  35                           const struct pipe_resource *template,
  36                           struct winsys_handle *whandle)
  37 {
  38         if (template->target == PIPE_BUFFER)
  39                 return NULL;
  40         else
  41                 return nvfx_miptree_from_handle(screen, template, whandle);
  42 }
  43
  44 void
  45 nvfx_init_resource_functions(struct pipe_context *pipe)
  46 {
  47         pipe->get_transfer = u_get_transfer_vtbl;
  48         pipe->transfer_map = u_transfer_map_vtbl;
  49         pipe->transfer_flush_region = u_transfer_flush_region_vtbl;
  50         pipe->transfer_unmap = u_transfer_unmap_vtbl;
  51         pipe->transfer_destroy = u_transfer_destroy_vtbl;
  52         pipe->transfer_inline_write = u_transfer_inline_write_vtbl;
  53         pipe->is_resource_referenced = nvfx_resource_is_referenced;
  54 }
  55
  56 void
  57 nvfx_screen_init_resource_functions(struct pipe_screen *pscreen)
  58 {
  59         pscreen->resource_create = nvfx_resource_create;
  60         pscreen->resource_from_handle = nvfx_resource_from_handle;
  61         pscreen->resource_get_handle = u_resource_get_handle_vtbl;
  62         pscreen->resource_destroy = u_resource_destroy_vtbl;
  63         pscreen->user_buffer_create = nvfx_user_buffer_create;
  64
  65         pscreen->get_tex_surface = nvfx_miptree_surface_new;
  66         pscreen->tex_surface_destroy = nvfx_miptree_surface_del;
  67 }