forked from townforge/townforge
50 lines
1.3 KiB
GLSL
50 lines
1.3 KiB
GLSL
#include "Uniforms.glsl"
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#include "Samplers.glsl"
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#include "Transform.glsl"
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#include "ScreenPos.glsl"
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#include "Lighting.glsl"
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varying vec2 vTexCoord;
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varying float vWorldHeight;
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#ifdef VERTEXCOLOR
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varying vec4 vColor;
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#endif
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#ifdef PERPIXEL
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#else
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varying vec3 vVertexLight;
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varying vec4 vScreenPos;
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#endif
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uniform vec2 cSnowOffset;
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uniform float cSnowStrength;
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void VS()
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{
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mat4 modelMatrix = iModelMatrix;
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vec3 worldPos = GetWorldPos(modelMatrix);
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gl_Position = GetClipPos(worldPos);
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vWorldHeight = worldPos.y;
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vTexCoord = GetTexCoord(iTexCoord) + cSnowOffset;
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}
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void PS()
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{
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// Get material diffuse albedo
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vec4 diffInput = texture2D(sDiffMap, vTexCoord.xy);
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if (cSnowStrength >= 0.5)
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{
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diffInput += smoothstep(0.0, 1.0, cSnowStrength - 0.5) * texture2D(sDiffMap, vTexCoord.xy + vec2(0.7, 0.3));
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if (cSnowStrength >= 0.8)
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diffInput += smoothstep(0.0, 1.0, cSnowStrength - 0.8) * texture2D(sDiffMap, vTexCoord.xy + vec2(0.3, 0.7));
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}
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vec4 diffColor = cMatDiffColor * diffInput;
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#ifdef VERTEXCOLOR
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diffColor *= vColor;
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#endif
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float height = vWorldHeight - cCameraPosPS.y;
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gl_FragColor = vec4(diffColor.rgb, diffColor.a);
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}
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