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xo-imgui: refactor ex4a: create_render_pass()

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This commit is contained in:
Roland Conybeare 2025-11-11 10:02:15 -05:00
commit 78b2cd4f0c
2 changed files with 56 additions and 47 deletions
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44
xo-imgui/example/ex4a/VulkanApp.cpp
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@ -242,4 +242,48 @@ MinimalImGuiVulkan::create_image_views()
}
}
void
MinimalImGuiVulkan::create_render_pass()
{
VkAttachmentDescription color_attachment{};
color_attachment.format = swapchain_image_format_;
color_attachment.samples = VK_SAMPLE_COUNT_1_BIT;
color_attachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
color_attachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
color_attachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
color_attachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
color_attachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
color_attachment.finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
VkAttachmentReference color_attachment_ref{};
color_attachment_ref.attachment = 0;
color_attachment_ref.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
VkSubpassDescription subpass{};
subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
subpass.colorAttachmentCount = 1;
subpass.pColorAttachments = &color_attachment_ref;
VkSubpassDependency dependency{};
dependency.srcSubpass = VK_SUBPASS_EXTERNAL;
dependency.dstSubpass = 0;
dependency.srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
dependency.srcAccessMask = 0;
dependency.dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
dependency.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
VkRenderPassCreateInfo render_pass_info{};
render_pass_info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
render_pass_info.attachmentCount = 1;
render_pass_info.pAttachments = &color_attachment;
render_pass_info.subpassCount = 1;
render_pass_info.pSubpasses = &subpass;
render_pass_info.dependencyCount = 1;
render_pass_info.pDependencies = &dependency;
if (vkCreateRenderPass(device_, &render_pass_info, nullptr, &(this->render_pass_)) != VK_SUCCESS) {
throw std::runtime_error("Failed to create render pass!");
}
}
/* end VulkanApp.cpp */