71 lines
2.0 KiB
GLSL
71 lines
2.0 KiB
GLSL
/////////////
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// GLOBALS //
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/////////////
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cbuffer MatrixBuffer
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{
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matrix worldMatrix;
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matrix viewMatrix;
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matrix projectionMatrix;
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};
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cbuffer ReflectionBuffer
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{
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matrix reflectionMatrix;
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};
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//////////////
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// TYPEDEFS //
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//////////////
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struct VertexInputType
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{
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float4 position : POSITION;
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float2 tex : TEXCOORD0;
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};
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struct PixelInputType
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{
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float4 position : SV_POSITION;
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float2 tex : TEXCOORD0;
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float4 reflectionPosition : TEXCOORD1;
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float4 refractionPosition : TEXCOORD2;
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};
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////////////////////////////////////////////////////////////////////////////////
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// Vertex Shader
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////////////////////////////////////////////////////////////////////////////////
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PixelInputType WaterVertexShader(VertexInputType input)
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{
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PixelInputType output;
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matrix reflectProjectWorld;
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matrix viewProjectWorld;
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// Change the position vector to be 4 units for proper matrix calculations.
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input.position.w = 1.0f;
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// Calculate the position of the vertex against the world, view, and projection matrices.
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output.position = mul(input.position, worldMatrix);
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output.position = mul(output.position, viewMatrix);
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output.position = mul(output.position, projectionMatrix);
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// Store the texture coordinates for the pixel shader.
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output.tex = input.tex;
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// Create the reflection projection world matrix.
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reflectProjectWorld = mul(reflectionMatrix, projectionMatrix);
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reflectProjectWorld = mul(worldMatrix, reflectProjectWorld);
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// Calculate the input position against the reflectProjectWorld matrix.
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output.reflectionPosition = mul(input.position, reflectProjectWorld);
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// Create the view projection world matrix for refraction.
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viewProjectWorld = mul(viewMatrix, projectionMatrix);
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viewProjectWorld = mul(worldMatrix, viewProjectWorld);
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// Calculate the input position against the viewProjectWorld matrix.
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output.refractionPosition = mul(input.position, viewProjectWorld);
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return output;
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} |