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How to use HLSL Shader Compiler

1. Create fx file
2. Write fx code
3. Compile fx file into ps file
4. Set Build-Action on the fx file in Visual Studio to Content
5. Set Build-Action on the ps file in Visual Studio to Resource

HLSL Shader Compiler is called fxc.exe (Direct3D Shader Compiler) and it can be located in C:\Program Files (x86)\Windows Kits\10\bin\x86\fxc.exe

Example on compile command with "/Fc -> output assembly code listing file" => cod file:

fxc.exe /T ps_2_0 /E main /WX /O0 /Fc /Zi /Fo ContrastAdjust.ps ContrastAdjust.fx

Example on compile:

fxc.exe /T ps_2_0 /E main /WX /O0 /Fo ContrastAdjust.ps ContrastAdjust.fx

Code example for ContrastAdjust:

sampler2D Input : register(s0);
float Brightness : register(c0);
float Contrast : register(c1);

float4 main(float2 uv : TEXCOORD) : COLOR
{
    float4 color = tex2D(Input, uv);
    float4 result = color;
    result = color + Brightness;
    result = ((result - 0.5) * pow((Contrast + 1.0) / 1.0, 2)) + 0.5;
    result.a = color.a;
    return result;
}

Output assembly code listing file "cod file" for ContrastAdjust:

//
// Generated by Microsoft (R) HLSL Shader Compiler 10.1
//
// Parameters:
//
//   float Brightness;
//   float Contrast;
//   sampler2D Input;
//
//
// Registers:
//
//   Name         Reg   Size
//   ------------ ----- ----
//   Brightness   c0       1
//   Contrast     c1       1
//   Input        s0       1
//

    ps_2_0
    def c2, -0.5, 1, 0.5, 0
    dcl t0.xy  // uv<0,1>
    dcl_2d s0

#line 7 "C:\Code\atc-net\atc-wpf\src\Atc.Wpf\Media\ShaderEffects\Shaders\ContrastAdjust.fx"
    texld r0, t0, s0  // ::color<0,1,2,3>

#line 10
    mov r1.w, c2.y
    add r1.x, r1.w, c1.x
    mul r1.x, r1.x, r1.x
    add r1.yzw, r0.wzyx, c0.x  // ::result<2,1,0>
    add r1.yzw, r1, c2.x
    mad r0.xyz, r1.wzyx, r1.x, c2.z  // ::result<0,1,2>
    mov oC0, r0  // ::main<0,1,2,3>

// approximately 8 instruction slots used (1 texture, 7 arithmetic)

Actual script:

fxc.exe /T ps_2_0 /E main /WX /O0 /Fo ContrastAdjust.ps ContrastAdjust.fx
fxc.exe /T ps_2_0 /E main /WX /O0 /Fo Desaturate.ps Desaturate.fx
fxc.exe /T ps_2_0 /E main /WX /O0 /Fo Fade.ps Fade.fx
fxc.exe /T ps_2_0 /E main /WX /O0 /Fo InvertColors.ps InvertColors.fx
fxc.exe /T ps_2_0 /E main /WX /O0 /Fo Monochrome.ps Monochrome.fx
fxc.exe /T ps_2_0 /E main /WX /O0 /Fo Saturate.ps Saturate.fx