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改进判断，使代码阅读更清晰

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This commit is contained in:
HuYingzhuo 2019-04-11 19:51:30 +08:00
parent 732c3156d7
commit fd8cd15ad8
1 changed files with 11 additions and 9 deletions
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20
example/Vulkan/RenderSurfaceCreater.cpp
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@ -8,20 +8,22 @@ VkSurfaceKHR CreateSurface(VkInstance,Window *);
namespace namespace
{ {
VkExtent2D GetSwapchainExtent(VkSurfaceCapabilitiesKHR &surface_caps,int width,int height) template<typename T> T Clamp(const T &cur,const T &min_value,const T &max_value)
{
if(cur<min_value)return min_value;
if(cur>max_value)return max_value;
return cur;
}
VkExtent2D GetSwapchainExtent(VkSurfaceCapabilitiesKHR &surface_caps,uint32_t width,uint32_t height)
{ {
if(surface_caps.currentExtent.width==0xFFFFFFFF) if(surface_caps.currentExtent.width==0xFFFFFFFF)
{ {
VkExtent2D swapchain_extent; VkExtent2D swapchain_extent;
swapchain_extent.width=width; swapchain_extent.width=Clamp(width,surface_caps.minImageExtent.width,surface_caps.maxImageExtent.width);
swapchain_extent.height=height; swapchain_extent.height=Clamp(height,surface_caps.minImageExtent.height,surface_caps.maxImageExtent.height);
if(swapchain_extent.width<surface_caps.minImageExtent.width)swapchain_extent.width=surface_caps.minImageExtent.width;else
if(swapchain_extent.width>surface_caps.maxImageExtent.width)swapchain_extent.width=surface_caps.maxImageExtent.width;
if(swapchain_extent.height<surface_caps.minImageExtent.height)swapchain_extent.height=surface_caps.minImageExtent.height;else
if(swapchain_extent.height>surface_caps.maxImageExtent.height)swapchain_extent.height=surface_caps.maxImageExtent.height;
return swapchain_extent; return swapchain_extent;
} }