From 223f767b0153e70cce12eb58561ea79e1189e16d Mon Sep 17 00:00:00 2001
From: hyzboy <hyzboy@gmail.com>
Date: Wed, 19 Jun 2019 16:54:41 +0800
Subject: [PATCH] =?UTF-8?q?PhysicalDevice=E5=A2=9E=E5=8A=A0GetDepthFormat/?=
 =?UTF-8?q?GetDepthStencilFormat/CheckDepthFormat=E5=87=BD=E6=95=B0?=
 =?UTF-8?q?=E7=94=A8=E4=BA=8E=E6=A3=80=E6=B5=8B=E6=A0=BC=E5=BC=8F=E6=98=AF?=
 =?UTF-8?q?=E5=90=A6=E5=8F=AF=E7=94=A8?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 inc/hgl/graph/vulkan/VKPhysicalDevice.h      |  5 ++
 src/RenderDevice/Vulkan/VKPhysicalDevice.cpp | 87 +++++++++++++++++++-
 2 files changed, 91 insertions(+), 1 deletion(-)

diff --git a/inc/hgl/graph/vulkan/VKPhysicalDevice.h b/inc/hgl/graph/vulkan/VKPhysicalDevice.h
index 35395ac0..b475bd4d 100644
--- a/inc/hgl/graph/vulkan/VKPhysicalDevice.h
+++ b/inc/hgl/graph/vulkan/VKPhysicalDevice.h
@@ -70,5 +70,10 @@ public:
 
         return fp;
     }
+    
+    VkFormat GetDepthFormat(bool lower_to_high=true)const;
+    VkFormat GetDepthStencilFormat(bool lower_to_high=true)const;
+
+    bool CheckDepthFormat(const VkFormat)const;
 };//class PhysicalDevice
 VK_NAMESPACE_END
\ No newline at end of file
diff --git a/src/RenderDevice/Vulkan/VKPhysicalDevice.cpp b/src/RenderDevice/Vulkan/VKPhysicalDevice.cpp
index f618dbc2..621900d7 100644
--- a/src/RenderDevice/Vulkan/VKPhysicalDevice.cpp
+++ b/src/RenderDevice/Vulkan/VKPhysicalDevice.cpp
@@ -35,7 +35,7 @@ PhysicalDevice::PhysicalDevice(VkInstance inst,VkPhysicalDevice pd)
 
     if(GetExtensionSpecVersion(VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_EXTENSION_NAME))
         GetPhysicalDeviceProperties2=(PFN_vkGetPhysicalDeviceProperties2KHR)vkGetInstanceProcAddr(instance,"vkGetPhysicalDeviceProperties2KHR");
-    
+
     if(!GetPhysicalDeviceProperties2)
         if(GetExtensionSpecVersion(VK_KHR_DRIVER_PROPERTIES_EXTENSION_NAME))
             GetPhysicalDeviceProperties2=(PFN_vkGetPhysicalDeviceProperties2)vkGetInstanceProcAddr(instance,"vkGetPhysicalDeviceProperties2");
@@ -91,4 +91,89 @@ const bool PhysicalDevice::CheckMemoryType(uint32_t typeBits,VkFlags requirement
     // No memory types matched, return failure
     return false;
 }
+VkFormat PhysicalDevice::GetDepthFormat(bool lower_to_high)const
+{
+    constexpr VkFormat depthFormats[] =
+    {
+        VK_FORMAT_D16_UNORM,
+        VK_FORMAT_D24_UNORM_S8_UINT,
+        VK_FORMAT_D32_SFLOAT,
+        VK_FORMAT_D32_SFLOAT_S8_UINT
+    };
+
+    VkFormat result=VK_FORMAT_UNDEFINED;
+
+    for (auto& format : depthFormats)
+    {
+        VkFormatProperties formatProps;
+
+        vkGetPhysicalDeviceFormatProperties(physical_device, format, &formatProps);
+
+        if (formatProps.optimalTilingFeatures & VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT)
+        {
+            if(lower_to_high)
+                return format;
+            else
+                result=format;
+        }
+    }
+
+    return result;
+}
+
+VkFormat PhysicalDevice::GetDepthStencilFormat(bool lower_to_high)const
+{
+    constexpr VkFormat depthStencilFormats[] =
+    {
+        VK_FORMAT_D16_UNORM_S8_UINT,
+        VK_FORMAT_D24_UNORM_S8_UINT,
+        VK_FORMAT_D32_SFLOAT_S8_UINT
+    };
+
+    VkFormat result=VK_FORMAT_UNDEFINED;
+
+    for (auto& format : depthStencilFormats)
+    {
+        VkFormatProperties formatProps;
+
+        vkGetPhysicalDeviceFormatProperties(physical_device, format, &formatProps);
+
+        if (formatProps.optimalTilingFeatures & VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT)
+        {
+            if(lower_to_high)
+                return format;
+            else
+                result=format;
+        }
+    }
+
+    return result;
+}
+
+bool PhysicalDevice::CheckDepthFormat(const VkFormat)const
+{
+    constexpr VkFormat depthFormats[] =
+    {
+        VK_FORMAT_D16_UNORM,
+        VK_FORMAT_X8_D24_UNORM_PACK32,
+        VK_FORMAT_D32_SFLOAT,
+        VK_FORMAT_D16_UNORM_S8_UINT,
+        VK_FORMAT_D24_UNORM_S8_UINT,
+        VK_FORMAT_D32_SFLOAT_S8_UINT,
+    };
+
+    VkFormat result=VK_FORMAT_UNDEFINED;
+
+    for (auto& format : depthFormats)
+    {
+        VkFormatProperties formatProps;
+
+        vkGetPhysicalDeviceFormatProperties(physical_device, format, &formatProps);
+
+        if (formatProps.optimalTilingFeatures & VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT)
+            return(true);
+    }
+
+    return false;
+}
 VK_NAMESPACE_END
\ No newline at end of file