xref: /third_party/mesa3d/src/vulkan/runtime/vk_framebuffer.c

/*
 * Copyright © 2021 Intel Corporation
 *
 * 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 (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 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.
 */

#include "vk_framebuffer.h"

#include "vk_common_entrypoints.h"
#include "vk_device.h"

VKAPI_ATTR VkResult VKAPI_CALL
vk_common_CreateFramebuffer(VkDevice _device,
                            const VkFramebufferCreateInfo *pCreateInfo,
                            const VkAllocationCallbacks *pAllocator,
                            VkFramebuffer *pFramebuffer)
{
   VK_FROM_HANDLE(vk_device, device, _device);
   struct vk_framebuffer *framebuffer;

   assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO);

   size_t size = sizeof(*framebuffer);

   /* VK_KHR_imageless_framebuffer extension says:
    *
    *    If flags includes VK_FRAMEBUFFER_CREATE_IMAGELESS_BIT,
    *    parameter pAttachments is ignored.
    */
   if (!(pCreateInfo->flags & VK_FRAMEBUFFER_CREATE_IMAGELESS_BIT))
      size += sizeof(VkImageView) * pCreateInfo->attachmentCount;

   framebuffer = vk_object_alloc(device, pAllocator, size,
                                 VK_OBJECT_TYPE_FRAMEBUFFER);
   if (framebuffer == NULL)
      return VK_ERROR_OUT_OF_HOST_MEMORY;

   framebuffer->flags = pCreateInfo->flags;
   framebuffer->width = pCreateInfo->width;
   framebuffer->height = pCreateInfo->height;
   framebuffer->layers = pCreateInfo->layers;

   if (!(pCreateInfo->flags & VK_FRAMEBUFFER_CREATE_IMAGELESS_BIT)) {
      for (uint32_t i = 0; i < pCreateInfo->attachmentCount; i++)
         framebuffer->attachments[i] = pCreateInfo->pAttachments[i];
      framebuffer->attachment_count = pCreateInfo->attachmentCount;
   }

   *pFramebuffer = vk_framebuffer_to_handle(framebuffer);

   return VK_SUCCESS;
}

VKAPI_ATTR void VKAPI_CALL
vk_common_DestroyFramebuffer(VkDevice _device,
                             VkFramebuffer _framebuffer,
                             const VkAllocationCallbacks *pAllocator)
{
   VK_FROM_HANDLE(vk_device, device, _device);
   VK_FROM_HANDLE(vk_framebuffer, framebuffer, _framebuffer);

   if (!framebuffer)
      return;

   vk_object_free(device, pAllocator, framebuffer);
}