Refactor command-line tools to use shared header (#514)

DDSView/ddsview.hlsl

@@ -0,0 +1,86 @@
+//--------------------------------------------------------------------------------------
+// File: ddsview.fx
+//
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT License.
+//--------------------------------------------------------------------------------------
+
+//--------------------------------------------------------------------------------------
+// Constant Buffer Variables
+//--------------------------------------------------------------------------------------
+Texture1D tx1D : register(t0);
+Texture1DArray tx1DArray : register(t0);
+
+Texture2D tx2D : register(t0);
+Texture2DArray tx2DArray : register(t0);
+
+Texture3D tx3D : register(t0);
+
+SamplerState samLinear : register(s0);
+
+cbuffer cbArrayControl  : register(b0)
+{
+    float Index;
+};
+
+//--------------------------------------------------------------------------------------
+struct VS_INPUT
+{
+    float4 Pos : POSITION;
+    float4 Tex : TEXCOORD0;
+};
+
+struct PS_INPUT
+{
+    float4 Pos : SV_POSITION;
+    float4 Tex : TEXCOORD0;
+};
+
+
+//--------------------------------------------------------------------------------------
+// Vertex Shader
+//--------------------------------------------------------------------------------------
+PS_INPUT VS(VS_INPUT input)
+{
+    PS_INPUT output = (PS_INPUT)0;
+    output.Pos = input.Pos;
+    output.Tex = input.Tex;
+    return output;
+}
+
+
+//--------------------------------------------------------------------------------------
+// Pixel Shader
+//--------------------------------------------------------------------------------------
+float4 PS_1D(PS_INPUT input) : SV_Target
+{
+    return tx1D.Sample(samLinear, input.Tex.x);
+}
+
+float4 PS_1DArray(PS_INPUT input) : SV_Target
+{
+    return tx1DArray.Sample(samLinear, float2(input.Tex.x, Index));
+}
+
+float4 PS_2D(PS_INPUT input) : SV_Target
+{
+    return tx2D.Sample(samLinear, input.Tex.xy);
+}
+
+float4 PS_2DArray(PS_INPUT input) : SV_Target
+{
+    return tx2DArray.Sample(samLinear, float3(input.Tex.xy, Index));
+}
+
+float4 PS_3D(PS_INPUT input) : SV_Target
+{
+    int Width, Height, Depth;
+    tx3D.GetDimensions(Width, Height, Depth);
+
+    return tx3D.Sample(samLinear, float3(input.Tex.xy, Index / Depth));
+}
+
+float4 PS_Cube(PS_INPUT input) : SV_Target
+{
+    return tx2DArray.Sample(samLinear, float3(input.Tex.xy, input.Tex.z + (6*Index)));
+}