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Comments, small optimization

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This commit is contained in:
saschawillems 2016-06-05 16:42:27 +02:00
parent c85413f893
commit 05a4fab71f
1 changed files with 12 additions and 7 deletions
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19
shadowmapping/shadowmapping.cpp
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@ -36,7 +36,6 @@
#define SHADOWMAP_FILTER VK_FILTER_LINEAR
// Offscreen frame buffer properties
#define FB_DIM SHADOWMAP_DIM
#define FB_COLOR_FORMAT VK_FORMAT_R8G8B8A8_UNORM
// Vertex layout for this example
@ -203,7 +202,10 @@ public:
attDesc[0].format = FB_COLOR_FORMAT;
attDesc[0].samples = VK_SAMPLE_COUNT_1_BIT;
attDesc[0].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
attDesc[0].storeOp = VK_ATTACHMENT_STORE_OP_STORE;
// We only need depth information for shadow mapping
// So we don't need to store the color information
// after the render pass has finished
attDesc[0].storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
attDesc[0].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
attDesc[0].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
attDesc[0].initialLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
@ -247,10 +249,14 @@ public:
VK_CHECK_RESULT(vkCreateRenderPass(device, &renderPassCreateInfo, nullptr, &offScreenFrameBuf.renderPass));
}
// Setup the offscreen framebuffer for rendering the scene from
// light's point-of-view to
// The depth attachment of this framebuffer will then be used
// to sample frame in the fragment shader of the shadowing pass
void prepareOffscreenFramebuffer()
{
offScreenFrameBuf.width = FB_DIM;
offScreenFrameBuf.height = FB_DIM;
offScreenFrameBuf.width = SHADOWMAP_DIM;
offScreenFrameBuf.height = SHADOWMAP_DIM;
VkFormat fbColorFormat = FB_COLOR_FORMAT;
@ -274,7 +280,6 @@ public:
VkImageViewCreateInfo colorImageView = vkTools::initializers::imageViewCreateInfo();
colorImageView.viewType = VK_IMAGE_VIEW_TYPE_2D;
colorImageView.format = fbColorFormat;
colorImageView.flags = 0;
colorImageView.subresourceRange = {};
colorImageView.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
colorImageView.subresourceRange.baseMipLevel = 0;
@ -337,8 +342,8 @@ public:
depthStencilView.image = offScreenFrameBuf.depth.image;
VK_CHECK_RESULT(vkCreateImageView(device, &depthStencilView, nullptr, &offScreenFrameBuf.depth.view));
// Create sampler used to sample from depth attachment
// in shadowing fragment shader
// Create sampler to sample from to depth attachment
// Used to sample in the fragment shader for shadowed rendering
VkSamplerCreateInfo sampler = vkTools::initializers::samplerCreateInfo();
sampler.magFilter = SHADOWMAP_FILTER;
sampler.minFilter = SHADOWMAP_FILTER;