test2/source/blender/gpu/vulkan/vk_framebuffer.hh

/* SPDX-License-Identifier: GPL-2.0-or-later
 * Copyright 2022 Blender Foundation. All rights reserved. */

/** \file
 * \ingroup gpu
 */

#pragma once

#include "gpu_framebuffer_private.hh"

#include "vk_common.hh"

namespace blender::gpu {

class VKFrameBuffer : public FrameBuffer {
 private:
  /* Vulkan object handle. */
  VkFramebuffer vk_framebuffer_ = VK_NULL_HANDLE;
  /* Vulkan device who created the handle. */
  VkDevice vk_device_ = VK_NULL_HANDLE;
  /* Base render pass used for framebuffer creation. */
  VkRenderPass render_pass_ = VK_NULL_HANDLE;
  /* Number of layers if the attachments are layered textures. */
  int depth_ = 1;
  /** Internal frame-buffers are immutable. */
  bool immutable_;

 public:
  /**
   * Create a conventional framebuffer to attach texture to.
   **/
  VKFrameBuffer(const char *name);

  /**
   * Special frame-buffer encapsulating internal window frame-buffer.
   * This just act as a wrapper, the actual allocations are done by GHOST_ContextVK.
   **/
  VKFrameBuffer(const char *name,
                VkFramebuffer vk_framebuffer,
                VkRenderPass vk_render_pass,
                VkExtent2D vk_extent);

  ~VKFrameBuffer();

  void bind(bool enabled_srgb) override;
  bool check(char err_out[256]) override;
  void clear(eGPUFrameBufferBits buffers,
             const float clear_col[4],
             float clear_depth,
             uint clear_stencil) override;
  void clear_multi(const float (*clear_col)[4]) override;
  void clear_attachment(GPUAttachmentType type,
                        eGPUDataFormat data_format,
                        const void *clear_value) override;

  void attachment_set_loadstore_op(GPUAttachmentType type,
                                   eGPULoadOp load_action,
                                   eGPUStoreOp store_action) override;

  void read(eGPUFrameBufferBits planes,
            eGPUDataFormat format,
            const int area[4],
            int channel_len,
            int slot,
            void *r_data) override;

  void blit_to(eGPUFrameBufferBits planes,
               int src_slot,
               FrameBuffer *dst,
               int dst_slot,
               int dst_offset_x,
               int dst_offset_y) override;
};

}  // namespace blender::gpu