Started texenvmap tool

Texenvmap/Shaders/CompileShaders.cmd

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+@echo off
+rem Copyright (c) Microsoft Corporation.
+rem Licensed under the MIT License.
+
+setlocal
+set error=0
+
+if %PROCESSOR_ARCHITECTURE%.==ARM64. (set FXCARCH=arm64) else (if %PROCESSOR_ARCHITECTURE%.==AMD64. (set FXCARCH=x64) else (set FXCARCH=x86))
+
+set FXCOPTS=/nologo /WX /Ges /Zi /Zpc /Qstrip_reflect /Qstrip_debug
+
+set PCFXC="%WindowsSdkVerBinPath%%FXCARCH%\fxc.exe"
+if exist %PCFXC% goto continue
+set PCFXC="%WindowsSdkBinPath%%WindowsSDKVersion%\%FXCARCH%\fxc.exe"
+if exist %PCFXC% goto continue
+set PCFXC="%WindowsSdkDir%bin\%WindowsSDKVersion%\%FXCARCH%\fxc.exe"
+if exist %PCFXC% goto continue
+
+set PCFXC=fxc.exe
+
+:continue
+if not defined CompileShadersOutput set CompileShadersOutput=Compiled
+set StrTrim=%CompileShadersOutput%##
+set StrTrim=%StrTrim: ##=%
+set CompileShadersOutput=%StrTrim:##=%
+@if not exist "%CompileShadersOutput%" mkdir "%CompileShadersOutput%"
+call :CompileShader Texenvmap vs VSBasic
+
+call :CompileShader Texenvmap ps PSBasic
+call :CompileShader Texenvmap ps PSEquiRect
+
+echo.
+
+if %error% == 0 (
+    echo Shaders compiled ok
+) else (
+    echo There were shader compilation errors!
+    exit /b 1
+)
+
+endlocal
+exit /b 0
+
+:CompileShader
+set fxc=%PCFXC% %1.fx %FXCOPTS% /T%2_4_0 /E%3 /Fh%CompileShadersOutput%\%1_%3.inc /Fd%CompileShadersOutput%\%1_%3.pdb /Vn%1_%3 
+echo.
+echo %fxc%
+%fxc% || set error=1
+exit /b

Texenvmap/Shaders/Texenvmap.fx

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+//--------------------------------------------------------------------------------------
+// File: Texenvmap.fx
+//
+// DirectX Texture environment map tool shaders
+//
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT License.
+//--------------------------------------------------------------------------------------
+
+Texture2D<float4> Texture : register(t0);
+sampler Sampler : register(s0);
+
+cbuffer Parameters : register(b0)
+{
+    float4x4 Transform;
+}
+
+struct VSInput
+{
+    float4 Position : SV_Position;
+    float2 TexCoord : TEXCOORD0;
+};
+
+struct VSOutput
+{
+    float4 PositionPS : SV_Position;
+    float2 TexCoord : TEXCOORD0;
+    float3 LocalPos : TEXCOORD1;
+};
+
+// Vertex shader: basic.
+VSOutput VSBasic(VSInput vin)
+{
+    VSOutput vout;
+
+    vout.LocalPos = vin.Position.xyz;
+    vout.PositionPS = mul(vin.Position, Transform);
+    vout.TexCoord = vin.TexCoord;
+
+    return vout;
+}
+
+// Pixel shader: basic
+float4 PSBasic(VSOutput pin) : SV_Target0
+{
+    float3 color = Texture.Sample(Sampler, pin.TexCoord).rgb;
+    return float4(color, 1.0);
+}
+
+// Pixel shader: Equirectangular projection to cubemap
+float2 SphereMap(float3 vec)
+{
+    float2 uv = float2(atan2(vec.z, vec.x), asin(vec.y));
+    uv *= float2(0.1591, 0.3183);
+    uv += 0.5;
+    return uv;
+}
+
+float4 PSEquiRect(VSOutput pin) : SV_Target0
+{
+    float2 uv = SphereMap(normalize(pin.LocalPos));
+
+    float3 color = Texture.Sample(Sampler, uv).rgb;
+    return float4(color, 1.0);
+}