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Proper resize handling

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This commit is contained in:
Sascha Willems 2023-10-14 16:35:41 +02:00
parent b481b63c78
commit 60321d465a
2 changed files with 20 additions and 16 deletions
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33
examples/variablerateshading/variablerateshading.cpp
View file

@ -47,21 +47,33 @@ void VulkanExample::getEnabledFeatures()
}
/*
If the window has been resized, we need to recreate the shading rate image
If the window has been resized, we need to recreate the shading rate image and the render pass. That's because the render pass holds information on the fragment shading rate image resolution
*/
void VulkanExample::handleResize()
{
// Delete allocated resources
vkDeviceWaitIdle(device);
// Invalidate the shading rate image, will be recreated in the renderpass setup
vkDestroyImageView(device, shadingRateImage.view, nullptr);
vkDestroyImage(device, shadingRateImage.image, nullptr);
vkFreeMemory(device, shadingRateImage.memory, nullptr);
// Recreate image
prepareShadingRateImage();
// Recreate the render pass and update it with the new fragment shading rate image resolution
vkDestroyRenderPass(device, renderPass, nullptr);
setupRenderPass();
resized = false;
}
void VulkanExample::setupFrameBuffer()
{
if (resized) {
handleResize();
}
if (shadingRateImage.image == VK_NULL_HANDLE) {
prepareShadingRateImage();
}
VkImageView attachments[3];
// Depth/Stencil attachment is the same for all frame buffers
@ -94,8 +106,9 @@ void VulkanExample::setupRenderPass()
vkCreateRenderPass2KHR = reinterpret_cast<PFN_vkCreateRenderPass2KHR>(vkGetInstanceProcAddr(instance, "vkCreateRenderPass2KHR"));
}
// Create an image with the shading rates to be used during rendering
prepareShadingRateImage();
if (shadingRateImage.image == VK_NULL_HANDLE) {
prepareShadingRateImage();
}
std::array<VkAttachmentDescription2KHR, 3> attachments = {};
// Color attachment
@ -202,11 +215,6 @@ void VulkanExample::setupRenderPass()
void VulkanExample::buildCommandBuffers()
{
if (resized)
{
handleResize();
}
// As this is an extension, we need to manually load the extension pointers
if (!vkCmdSetFragmentShadingRateKHR) {
vkCmdSetFragmentShadingRateKHR = reinterpret_cast<PFN_vkCmdSetFragmentShadingRateKHR>(vkGetDeviceProcAddr(device, "vkCmdSetFragmentShadingRateKHR"));
@ -538,14 +546,11 @@ void VulkanExample::preparePipelines()
};
VkSpecializationInfo specializationInfo = vks::initializers::specializationInfo(specializationMapEntries, sizeof(specializationData), &specializationData);
shaderStages[1].pSpecializationInfo = &specializationInfo;
// Create pipeline without shading rate
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipelines.opaque));
specializationData.alphaMask = true;
rasterizationStateCI.cullMode = VK_CULL_MODE_NONE;
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipelines.masked));
rasterizationStateCI.cullMode = VK_CULL_MODE_BACK_BIT;
specializationData.alphaMask = false;
}
void VulkanExample::prepareUniformBuffers()

3
examples/variablerateshading/variablerateshading.h
View file

@ -17,7 +17,7 @@ public:
vkglTF::Model scene;
struct ShadingRateImage {
VkImage image;
VkImage image{ VK_NULL_HANDLE };
VkDeviceMemory memory;
VkImageView view;
} shadingRateImage;
@ -58,7 +58,6 @@ public:
virtual void getEnabledFeatures();
void handleResize();
void buildCommandBuffers();
void loadglTFFile(std::string filename);
void loadAssets();
void prepareShadingRateImage();
void setupDescriptors();