co-maps/libs/shaders/GL/circle.fsh.glsl

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2025-11-22 13:58:55 +01:00
#ifdef ENABLE_VTF
layout (location = 0) in LOW_P vec4 v_color;
#else
layout (location = 1) in vec2 v_colorTexCoords;
layout (binding = 1) uniform sampler2D u_colorTex;
#endif
layout (location = 2) in vec3 v_radius;
layout (location = 0) out vec4 v_FragColor;
layout (binding = 0) uniform UBO
{
mat4 u_modelView;
mat4 u_projection;
mat4 u_pivotTransform;
vec2 u_contrastGamma;
float u_opacity;
float u_zScale;
float u_interpolation;
float u_isOutlinePass;
};
const float aaPixelsCount = 2.5;
void main()
{
#ifdef ENABLE_VTF
LOW_P vec4 finalColor = v_color;
#else
LOW_P vec4 finalColor = texture(u_colorTex, v_colorTexCoords);
#endif
float smallRadius = v_radius.z - aaPixelsCount;
float stepValue = smoothstep(smallRadius * smallRadius, v_radius.z * v_radius.z,
v_radius.x * v_radius.x + v_radius.y * v_radius.y);
finalColor.a = finalColor.a * u_opacity * (1.0 - stepValue);
v_FragColor = finalColor;
}