src/gallium/drivers/svga/svga_surface.h

/**********************************************************
 * Copyright 2008-2009 VMware, Inc.  All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use, copy,
 * modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
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 **********************************************************/

#ifndef SVGA_SURFACE_H
#define SVGA_SURFACE_H


#include "pipe/p_compiler.h"
#include "pipe/p_state.h"
#include "util/u_inlines.h"
#include "svga_screen_cache.h"

struct pipe_context;
struct pipe_screen;
struct svga_context;
struct svga_texture;
struct svga_winsys_surface;
enum SVGA3dSurfaceFormat;


struct svga_surface
{
   struct pipe_surface base;

   struct svga_host_surface_cache_key key;

   /*
    * Note that the handle may point at a secondary / backing resource
    * created by svga_texture_view_surface() which is something other
    * than svga_texture(base->texture)->handle.
    */
   struct svga_winsys_surface *handle;

   unsigned real_layer;
   unsigned real_level;
   unsigned real_zslice;

   boolean dirty;

   /* VGPU10 */
   SVGA3dRenderTargetViewId view_id;

   /*
    * As with 'handle' above, this may point to a secondary / backing resource.
    * We can't have one resource bound as both a render target and a shader
    * resource at the same time.  But we sometimes want to do that, such as
    * for mipmap generation where we sample from one level and render into
    * another.
    * In this situation, the backed surface is the render target while the
    * original surface is the shader resource.
    */
   struct svga_surface *backed;
   unsigned age;                   /* timestamp when the backed resource is
                                    * synced with the original resource.
                                    */
};


void
svga_mark_surfaces_dirty(struct svga_context *svga);

extern void
svga_propagate_surface(struct svga_context *svga, struct pipe_surface *surf,
                       boolean reset);

void
svga_propagate_rendertargets(struct svga_context *svga);

extern boolean
svga_surface_needs_propagation(const struct pipe_surface *surf);

struct svga_winsys_surface *
svga_texture_view_surface(struct svga_context *svga,
                          struct svga_texture *tex,
                          unsigned bind_flags,
                          SVGA3dSurfaceFlags flags,
                          SVGA3dSurfaceFormat format,
                          unsigned start_mip,
                          unsigned num_mip,
                          int layer_pick,
                          unsigned num_layers,
                          int zslice_pick,
                          boolean cacheable,
                          struct svga_host_surface_cache_key *key); /* OUT */


void
svga_texture_copy_handle(struct svga_context *svga,
                         struct svga_winsys_surface *src_handle,
                         unsigned src_x, unsigned src_y, unsigned src_z,
                         unsigned src_level, unsigned src_face,
                         struct svga_winsys_surface *dst_handle,
                         unsigned dst_x, unsigned dst_y, unsigned dst_z,
                         unsigned dst_level, unsigned dst_face,
                         unsigned width, unsigned height, unsigned depth);


static inline struct svga_surface *
svga_surface(struct pipe_surface *surface)
{
   return (struct svga_surface *)surface;
}


static inline const struct svga_surface *
svga_surface_const(const struct pipe_surface *surface)
{
   return (const struct svga_surface *)surface;
}

struct pipe_surface *
svga_validate_surface_view(struct svga_context *svga, struct svga_surface *s);

static inline SVGA3dResourceType
svga_resource_type(enum pipe_texture_target target)
{
   switch (target) {
   case PIPE_TEXTURE_1D:
   case PIPE_TEXTURE_1D_ARRAY:
      return SVGA3D_RESOURCE_TEXTURE1D;
   case PIPE_TEXTURE_RECT:
   case PIPE_TEXTURE_2D:
   case PIPE_TEXTURE_2D_ARRAY:
   case PIPE_TEXTURE_CUBE:
      /* drawing to cube map is treated as drawing to 2D array */
      return SVGA3D_RESOURCE_TEXTURE2D;
   case PIPE_TEXTURE_3D:
      return SVGA3D_RESOURCE_TEXTURE3D;
   default:
      assert(!"Unexpected texture target");
      return SVGA3D_RESOURCE_TEXTURE2D;
   }
}

#endif