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42 lines
1.4 KiB
GLSL
42 lines
1.4 KiB
GLSL
#include "core.h"
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#ifdef SH_VERTEX_SHADER
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SH_BEGIN_PROGRAM
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shUniform(float4x4, wvp) @shAutoConstant(wvp, worldviewproj_matrix)
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shVertexInput(float2, uv0)
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shOutput(float2, UV)
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shOutput(float, alphaFade)
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SH_START_PROGRAM
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{
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shOutputPosition = shMatrixMult(wvp, shInputPosition);
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UV = uv0;
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alphaFade = (shInputPosition.z <= 200.f) ? ((shInputPosition.z <= 100.f) ? 0.0 : 0.25) : 1.0;
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}
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#else
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SH_BEGIN_PROGRAM
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shInput(float2, UV)
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shInput(float, alphaFade)
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shSampler2D(diffuseMap1)
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shSampler2D(diffuseMap2)
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shUniform(float, cloudBlendFactor) @shSharedParameter(cloudBlendFactor)
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shUniform(float, cloudAnimationTimer) @shSharedParameter(cloudAnimationTimer)
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shUniform(float, cloudOpacity) @shSharedParameter(cloudOpacity)
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shUniform(float3, cloudColour) @shSharedParameter(cloudColour)
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SH_START_PROGRAM
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{
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// Scroll in y direction
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float2 scrolledUV = UV + float2(0,1) * cloudAnimationTimer * 0.003;
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float4 albedo = shSample(diffuseMap1, scrolledUV) * (1-cloudBlendFactor) + shSample(diffuseMap2, scrolledUV) * cloudBlendFactor;
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shOutputColour(0) = float4(cloudColour, 1) * albedo * float4(1,1,1, cloudOpacity * alphaFade);
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}
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#endif
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