添加了24号示例，详情请看ReadMe.md文档中的描述

24-CubeMapWithoutDDS/24-CubeMapWithoutDDS.vcxproj

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24-CubeMapWithoutDDS/24-CubeMapWithoutDDS.vcxproj.user

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24-CubeMapWithoutDDS/Shader/GRS_SkyBox.hlsl

+cbuffer CB_GRS_SCENE_MATRIX : register(b0)
+{
+    row_major matrix    g_mxInvWVP;
+}
+
+TextureCube	g_txCubeMap : register(t0);
+SamplerState g_smpLinear : register(s0);
+
+struct ST_GRS_HLSL_VS_IN
+{
+    float4 m_v4LPos : POSITION;
+};
+
+struct ST_GRS_HLSL_PS_IN
+{
+    float4 m_v4WPos : SV_POSITION;
+    float3 m_v3Tex  : TEXCOORD0;
+};
+
+ST_GRS_HLSL_PS_IN SkyboxVS(ST_GRS_HLSL_VS_IN stVSInput)
+{
+    ST_GRS_HLSL_PS_IN stVSOutput;
+
+    stVSOutput.m_v4WPos = stVSInput.m_v4LPos;
+    stVSOutput.m_v3Tex = normalize(mul(stVSInput.m_v4LPos, g_mxInvWVP).xyz);
+
+    return stVSOutput;
+}
+
+float4 SkyboxPS(ST_GRS_HLSL_PS_IN stPSInput) : SV_TARGET
+{
+    return g_txCubeMap.Sample(g_smpLinear, stPSInput.m_v3Tex);
+}

Assets/SkyBox/Fjaderholmarna/readme.txt

+Author
+======
+
+This is the work of Emil Persson, aka Humus.
+http://www.humus.name
+
+
+
+License
+=======
+
+This work is licensed under a Creative Commons Attribution 3.0 Unported License.
+http://creativecommons.org/licenses/by/3.0/

Assets/SkyBox/Tenerife/readme.txt

+Author
+======
+
+This is the work of Emil Persson, aka Humus.
+http://www.humus.name
+
+
+
+License
+=======
+
+This work is licensed under a Creative Commons Attribution 3.0 Unported License.
+http://creativecommons.org/licenses/by/3.0/

D3D12 Tutorials.sln

@@ -49,6 +49,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "22-MultiInstance-PBR-Sphere
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "23-Structured_Empty", "23-Structured_Empty\23-Structured_Empty.vcxproj", "{A2CBF947-07A7-42D9-A268-3CDDD9BCF2AE}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "24-CubeMapWithoutDDS", "24-CubeMapWithoutDDS\24-CubeMapWithoutDDS.vcxproj", "{C69D3E81-FAF3-4C6B-828D-6366E1685C09}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|x64 = Debug|x64
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 		{A2CBF947-07A7-42D9-A268-3CDDD9BCF2AE}.Release|x86.Build.0 = Release|Win32
+		{C69D3E81-FAF3-4C6B-828D-6366E1685C09}.Debug|x64.ActiveCfg = Debug|x64
+		{C69D3E81-FAF3-4C6B-828D-6366E1685C09}.Debug|x64.Build.0 = Debug|x64
+		{C69D3E81-FAF3-4C6B-828D-6366E1685C09}.Debug|x86.ActiveCfg = Debug|Win32
+		{C69D3E81-FAF3-4C6B-828D-6366E1685C09}.Debug|x86.Build.0 = Debug|Win32
+		{C69D3E81-FAF3-4C6B-828D-6366E1685C09}.Profile|x64.ActiveCfg = Debug|x64
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+		{C69D3E81-FAF3-4C6B-828D-6366E1685C09}.Profile|x86.ActiveCfg = Debug|Win32
+		{C69D3E81-FAF3-4C6B-828D-6366E1685C09}.Profile|x86.Build.0 = Debug|Win32
+		{C69D3E81-FAF3-4C6B-828D-6366E1685C09}.Release|x64.ActiveCfg = Release|x64
+		{C69D3E81-FAF3-4C6B-828D-6366E1685C09}.Release|x64.Build.0 = Release|x64
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+		{C69D3E81-FAF3-4C6B-828D-6366E1685C09}.Release|x86.Build.0 = Release|Win32
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

README.md

@@ -122,3 +122,12 @@
 
 ![image-20210911203050730](ScreenShot/22.jpg)
 
+# 23-Structured_Empty
+
+  这个示例是将之前示例中过多的变量进行了分类整理，比做了初步结构化封装，注意这不是教大家如何封装，而是为了后续的例子编写和学习的方便性，不再用去过多的记忆太多的变量及用途，而是分门别类放在结构体里，方便大家理解和学习。需要注意的是，这并不是估计大家封装的做法，因为这里用结构体封装了对象，这是一般封装思路中的大忌，所以在真实的项目代码中，大家一定要使用类来封装成员对象，结构体就是结构体，不要有函数，一般也不要有对象成员，否则后续代码会变得很诡异，而且理解和修改也是极其麻烦的。我将这个原则叫做 C/C++ style 分离（代码风格分离，不要用C写类似C++风格的代码，更不要用C++写类似C风格的代码）。
+
+# 24-CubeMapWithoutDDS
+
+  这个示例是个过渡示例，重点是让大家理解 Cube Map 或者说 Skybox（天空盒）纹理的构造，及单独每个面图片的创建和加载方法，也是为了让大家未来彻底丢掉DDS纹理做铺垫，因为DDS的来源较少，并且修改和使用也不直观，作为学习来说 DDS 格式本身就已经“过渡封装”了，非常不利于大家理解和掌握纹理操作的本质。另外这个示例也是为之后的 IBL 渲染做好铺垫，因为IBL渲染中有大量的Texture操作，尤其是有大量的 Cube Map 操作，如果不能很好的理解 Cube Texture 的构造及创建等相关操作方法的话，就几乎无法理解 IBL 的根本原理。
+
+![image-20220829121837669](ScreenShot/24.png)