21 lines
460 B
GLSL
21 lines
460 B
GLSL
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#version 300 es
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in vec4 a_position;
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uniform mat4 u_world;
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uniform mat4 u_matrix;
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uniform vec3 u_lightPos;
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uniform vec3 u_light;
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uniform float u_pointSize;
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out vec3 v_surfaceToLight;
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void main() {
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// convert the position from pixels to 0.0 to 1.0
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vec4 pos = a_position * u_matrix;
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gl_Position = pos;
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gl_PointSize = u_pointSize;
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vec3 surfaceWorldPosition = (u_world * pos).xyz;
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v_surfaceToLight = u_lightPos - surfaceWorldPosition;
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}
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