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Added multisampling example to readme

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saschawillems 2016-03-29 22:16:32 +02:00
parent 1e3dcb98b6
commit 79df037c92
4 changed files with 18 additions and 14 deletions
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18
multisampling/multisampling.cpp
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@ -1,8 +1,6 @@
/*
* Vulkan Example - Multisampling using resolve attachments
*
* todo : add second renderpass without msaa and allow toggle
*
* Copyright (C) 2016 by Sascha Willems - www.saschawillems.de
*
* This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
@ -238,8 +236,7 @@ public:
attachments[1].initialLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
attachments[1].finalLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
// Depth attachment
// This needs to use the same number of samples as the msaa attachment
// Multisampled depth attachment we render to
attachments[2].format = depthFormat;
attachments[2].samples = SAMPLE_COUNT;
attachments[2].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
@ -249,7 +246,7 @@ public:
attachments[2].initialLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
attachments[2].finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
// Depth resolve
// Depth resolve attachment
attachments[3].format = depthFormat;
attachments[3].samples = VK_SAMPLE_COUNT_1_BIT;
attachments[3].loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
@ -263,20 +260,22 @@ public:
colorReference.attachment = 0;
colorReference.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
VkAttachmentReference depthReference = {};
depthReference.attachment = 2;
depthReference.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
// Two resolve attachment references for color and depth
std::array<VkAttachmentReference,2> resolveReferences = {};
resolveReferences[0].attachment = 1;
resolveReferences[0].layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
resolveReferences[1].attachment = 3;
resolveReferences[1].layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
VkAttachmentReference depthReference = {};
depthReference.attachment = 2;
depthReference.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
VkSubpassDescription subpass = {};
subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
subpass.colorAttachmentCount = 1;
subpass.pColorAttachments = &colorReference;
// Pass our resolve attachments to the sub pass
subpass.pResolveAttachments = resolveReferences.data();
subpass.pDepthStencilAttachment = &depthReference;
@ -353,6 +352,7 @@ public:
VkCommandBufferBeginInfo cmdBufInfo = vkTools::initializers::commandBufferBeginInfo();
VkClearValue clearValues[3];
// Clear to a white background for higher contrast
clearValues[0].color = { { 1.0f, 1.0f, 1.0f, 1.0f } };
clearValues[1].color = { { 1.0f, 1.0f, 1.0f, 1.0f } };
clearValues[2].depthStencil = { 1.0f, 0 };