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// Copyright (c) 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef GPU_VULKAN_VULKAN_RENDER_PASS_H_
#define GPU_VULKAN_VULKAN_RENDER_PASS_H_
#include <vector>
#include <vulkan/vulkan.h>
#include "base/macros.h"
#include "gpu/vulkan/vulkan_export.h"
namespace gpu {
class CommandBufferRecorderBase;
class VulkanDeviceQueue;
class VulkanImageView;
class VulkanSwapChain;
class VULKAN_EXPORT VulkanRenderPass {
public:
enum class AttachmentType {
// Use image view of the swap chain image.
ATTACHMENT_TYPE_SWAP_IMAGE,
// Use image view of the attachment data.
ATTACHMENT_TYPE_ATTACHMENT_VIEW,
};
enum class ImageLayoutType {
// Undefined image layout.
IMAGE_LAYOUT_UNDEFINED,
// Image layout whiches matches the image view.
IMAGE_LAYOUT_TYPE_IMAGE_VIEW,
// Image layout for presenting.
IMAGE_LAYOUT_TYPE_PRESENT,
};
struct AttachmentData {
AttachmentType attachment_type;
VkSampleCountFlagBits sample_count;
VkAttachmentLoadOp load_op;
VkAttachmentStoreOp store_op;
// The stencil ops are only used for IMAGE_TYPE_STENCIL and
// IMAGE_TYPE_DEPTH_STENCIL image views.
VkAttachmentLoadOp stencil_load_op;
VkAttachmentStoreOp stencil_store_op;
ImageLayoutType start_layout;
ImageLayoutType end_layout;
VulkanImageView* image_view; // used for ATTACHMENT_TYPE_ATTACHMENT_VIEW.
VkClearValue clear_value; // used for VK_ATTACHMENT_LOAD_OP_CLEAR.
bool ValidateData(const VulkanSwapChain* swap_chain) const;
};
struct SubpassAttachment {
uint32_t attachment_index;
ImageLayoutType subpass_layout;
};
struct SubpassData {
SubpassData();
~SubpassData();
std::vector<SubpassAttachment> subpass_attachments;
bool ValidateData(uint32_t num_attachments) const;
};
struct RenderPassData {
RenderPassData();
~RenderPassData();
std::vector<AttachmentData> attachments;
std::vector<SubpassData> subpass_datas;
bool ValidateData(const VulkanSwapChain* swap_chain) const;
};
explicit VulkanRenderPass(VulkanDeviceQueue* device_queue);
~VulkanRenderPass();
bool Initialize(const VulkanSwapChain* swap_chain,
const RenderPassData& render_pass_data);
void Destroy();
// Begins render pass to command_buffer. The variable exec_inline signifies
// whether or not the subpass commands will be executed inline (within a
// primary command buffer) or whether it will be executed through a secondary
// command buffer.
void BeginRenderPass(const CommandBufferRecorderBase& recorder,
bool exec_inline);
// Begins the next subpass after BeginRenderPass has been called.
void NextSubPass(const CommandBufferRecorderBase& recorder);
// Ends the render passes.
void EndRenderPass(const CommandBufferRecorderBase& recorder);
void SetClearValue(uint32_t attachment_index, VkClearValue clear_value);
private:
VulkanDeviceQueue* device_queue_ = nullptr;
const VulkanSwapChain* swap_chain_ = nullptr;
uint32_t num_sub_passes_ = 0;
uint32_t current_sub_pass_ = 0;
bool executing_ = false;
VkSubpassContents execution_type_ = VK_SUBPASS_CONTENTS_INLINE;
VkRenderPass render_pass_ = VK_NULL_HANDLE;
// There is 1 clear color for every attachment which needs a clear.
std::vector<VkClearValue> attachment_clear_values_;
// There is 1 clear index for every attachment which needs a clear. This is
// kept in a separate array since it is only used setting clear values.
std::vector<uint32_t> attachment_clear_indexes_;
// There is 1 frame buffer for every swap chain image.
std::vector<VkFramebuffer> frame_buffers_;
DISALLOW_COPY_AND_ASSIGN(VulkanRenderPass);
};
} // namespace gpu
#endif // GPU_VULKAN_VULKAN_RENDER_PASS_H_
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