81 lines
2.7 KiB
Plaintext
81 lines
2.7 KiB
Plaintext
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// #include "res://addons/rokojori_action_library/Runtime/Shading/Library/Billboard.gdshaderinc"
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#include "res://addons/rokojori_action_library/Runtime/Shading/Library/Transform.gdshaderinc"
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#include "res://addons/rokojori_action_library/Runtime/Shading/Library/Math.gdshaderinc"
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void applyBillboardBending(
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inout vec3 _VERTEX,
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vec3 _CAMERA_DIRECTION_WORLD,
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vec3 _CAMERA_POSITION_WORLD,
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mat4 _MODEL_MATRIX,
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mat4 _VIEW_MATRIX,
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mat4 _PROJECTION_MATRIX,
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mat4 _INV_VIEW_MATRIX,
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float _bendingAmount,
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float _maxBendingAmount,
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float _edgeScale,
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float _minY,
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float _maxY
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)
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{
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float camDot = max( 0, dot( vec3( 0, 1, 0 ), _CAMERA_DIRECTION_WORLD ) );
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camDot = camDot * camDot * camDot;
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vec3 worldPosition = localToView( _VERTEX, _MODEL_MATRIX );
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vec3 directionToCam = worldPosition - _CAMERA_POSITION_WORLD;
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float d = length( directionToCam );
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directionToCam.y = 0.0;
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float dScale = min( _bendingAmount / d, _maxBendingAmount );
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vec3 view = worldToView( worldPosition, _VIEW_MATRIX );
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vec2 clip = viewToClip( view, _PROJECTION_MATRIX ).xy;
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float sd = 1.0 / ( 1.0 + length( clip ) );
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sd = mix( 1, sd, _edgeScale );
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//directionToCam = normalize( directionToCam );
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directionToCam = applyMatrixWithoutTranslation( vec3(0,-1,0), _INV_VIEW_MATRIX );
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float am = camDot * mapClamped( _VERTEX.y, _minY, _maxY, 1, -1 );
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am = am * am * am;
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_VERTEX += am * worldToLocalDirection( directionToCam, _MODEL_MATRIX ) * dScale * sd;
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}
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void applyBillboardBendingWithDirection(
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inout vec3 _VERTEX,
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vec3 _CAMERA_DIRECTION_WORLD,
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vec3 _CAMERA_POSITION_WORLD,
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mat4 _MODEL_MATRIX,
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mat4 _VIEW_MATRIX,
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mat4 _PROJECTION_MATRIX,
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mat4 _INV_VIEW_MATRIX,
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float _bendingAmount,
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float _maxBendingAmount,
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float _edgeScale,
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float _minY,
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float _maxY,
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vec3 _bendingDirection
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)
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{
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float camDot = max( 0, dot( vec3( 0, 1, 0 ), _CAMERA_DIRECTION_WORLD ) );
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camDot = camDot * camDot * camDot;
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vec3 worldPosition = localToView( _VERTEX, _MODEL_MATRIX );
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vec3 directionToCam = worldPosition - _CAMERA_POSITION_WORLD;
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float d = length( directionToCam );
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directionToCam.y = 0.0;
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float dScale = min( _bendingAmount / d, _maxBendingAmount );
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vec3 view = worldToView( worldPosition, _VIEW_MATRIX );
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vec2 clip = viewToClip( view, _PROJECTION_MATRIX ).xy;
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float sd = 1.0 / ( 1.0 + length( clip ) );
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sd = mix( 1, sd, _edgeScale );
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//directionToCam = normalize( directionToCam );
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directionToCam = worldToViewDirection( _bendingDirection, _VIEW_MATRIX );
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directionToCam.y = 0.0;
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directionToCam = viewToWorldDirection( _bendingDirection, _INV_VIEW_MATRIX );
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float am = camDot * mapClamped( _VERTEX.y, _minY, _maxY, 1, -1 );
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am = am * am * am;
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_VERTEX += am * worldToLocalDirection( directionToCam, _MODEL_MATRIX ) * dScale * sd;
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}
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