/* SPDX-License-Identifier:BSD-3-Clause */
#include "renderpass.h"
#include "../../core/log.h"

void vk_renderpass_init(struct renderer_context *context)
{
	VkAttachmentDescription color_attachment = {
		.format = context->swapchain.format,
		.samples = VK_SAMPLE_COUNT_1_BIT,
		.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR,
		.storeOp = VK_ATTACHMENT_STORE_OP_STORE,
		.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE,
		.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE,
		.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED,
		.finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR
	};

	VkAttachmentReference color_ref = {
		.attachment = 0,
		.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL
	};

	VkSubpassDescription subpass = {
		.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS,
		.colorAttachmentCount = 1,
		.pColorAttachments = &color_ref
	};

	VkSubpassDependency dependency = {
		.srcSubpass = VK_SUBPASS_EXTERNAL,
		.dstSubpass = 0,
		.srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT,
		.srcAccessMask = 0,
		.dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT,
		.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT
	};

	VkRenderPassCreateInfo create_info = {
		.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO,
		.attachmentCount = 1,
		.pAttachments = &color_attachment,
		.subpassCount = 1,
		.pSubpasses = &subpass,
		.dependencyCount = 1,
		.pDependencies = &dependency
	};

	if (vkCreateRenderPass(context->device, &create_info, NULL, &context->render_pass) != VK_SUCCESS) {
		fatal("Can't create render pass.\n");
	}

	log_info("Render pass created.\n");
}

void vk_renderpass_deinit(struct renderer_context *context)
{
	vkDestroyRenderPass(context->device, context->render_pass, NULL);
}