c4a8e9b098
* Vegetation shader and technique bugfixes * GLSL bug fix for vegetation shader * pivot fixed * Shaders fixed * Text formatting
41 lines
1.1 KiB
GLSL
41 lines
1.1 KiB
GLSL
#include "Uniforms.glsl"
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#include "Transform.glsl"
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uniform float cWindHeightFactor;
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uniform float cWindHeightPivot;
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uniform float cWindPeriod;
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uniform vec2 cWindWorldSpacing;
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#ifdef WINDSTEMAXIS
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uniform vec3 cWindStemAxis;
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#endif
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#ifdef VSM_SHADOW
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varying vec4 vTexCoord;
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#else
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varying vec2 vTexCoord;
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#endif
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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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#ifdef WINDSTEMAXIS
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float stemDistance = dot(iPos.xyz, cWindStemAxis);
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#else
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float stemDistance = iPos.y;
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#endif
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float windStrength = max(stemDistance - cWindHeightPivot, 0.0) * cWindHeightFactor;
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float windPeriod = cElapsedTime * cWindPeriod + dot(worldPos.xz, cWindWorldSpacing);
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worldPos.x += windStrength * sin(windPeriod);
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worldPos.z -= windStrength * cos(windPeriod);
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gl_Position = GetClipPos(worldPos);
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#ifdef VSM_SHADOW
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vTexCoord = vec4(GetTexCoord(iTexCoord), gl_Position.z, gl_Position.w);
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#else
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vTexCoord = GetTexCoord(iTexCoord);
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#endif
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}
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