22 lines
No EOL
776 B
GLSL
22 lines
No EOL
776 B
GLSL
/*
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contributors: Patricio Gonzalez Vivo
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description: get screen coordinates from view position
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use: <vec2> view2screenPosition(<vec3> viewPosition )
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options:
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- CAMERA_PROJECTION_MATRIX: mat4 matrix with camera projection
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license:
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- Copyright (c) 2021 Patricio Gonzalez Vivo under Prosperity License - https://prosperitylicense.com/versions/3.0.0
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- Copyright (c) 2021 Patricio Gonzalez Vivo under Patron License - https://lygia.xyz/license
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*/
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#ifndef CAMERA_PROJECTION_MATRIX
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#define CAMERA_PROJECTION_MATRIX u_projectionMatrix
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#endif
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#ifndef FNC_VIEW2SCREENPOSITION
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#define FNC_VIEW2SCREENPOSITION
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vec2 view2screenPosition(vec3 viewPosition){
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vec4 clip = CAMERA_PROJECTION_MATRIX * vec4(viewPosition, 1.0);
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return (clip.xy / clip.w + 1.0) * 0.5;
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}
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#endif |