/*
 * Copyright 2018 Collabora Ltd.
 *
 * 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
 * on the rights to use, copy, modify, merge, publish, distribute, sub
 * license, 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 (including the next
 * paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS 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.
 */

 #ifndef ZINK_SURFACE_H
 #define ZINK_SURFACE_H

#include "zink_types.h"

static inline bool
equals_surface_key(const void *a, const void *b)
{
   return memcmp(a, b, sizeof(struct zink_surface_key)) == 0;
}

VkImageViewCreateInfo
create_ivci(struct zink_screen *screen,
            struct zink_resource *res,
            const struct pipe_surface *templ,
            enum pipe_texture_target target);

struct zink_surface *
zink_get_surface(struct zink_context *ctx,
            const struct pipe_surface *templ,
            VkImageViewCreateInfo *ivci);

struct zink_surface *
zink_create_fb_surface(struct pipe_context *pctx,
                       const struct pipe_surface *templ);

struct zink_surface *
zink_create_transient_surface(struct zink_context *ctx, const struct pipe_surface *psurf, unsigned nr_samples);

/* cube image types are clamped by gallium rules to 2D or 2D_ARRAY viewtypes if not using all layers */
static inline VkImageViewType
zink_surface_clamp_viewtype(VkImageViewType viewType, unsigned first_layer, unsigned last_layer, unsigned array_size)
{
   unsigned layerCount = 1 + last_layer - first_layer;
   if (viewType == VK_IMAGE_VIEW_TYPE_CUBE || viewType == VK_IMAGE_VIEW_TYPE_CUBE_ARRAY) {
      if (first_layer == last_layer)
         return VK_IMAGE_VIEW_TYPE_2D;
      if (layerCount % 6 != 0 && (first_layer || layerCount != array_size))
         return VK_IMAGE_VIEW_TYPE_2D_ARRAY;
   }
   return viewType;
}

#endif