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Added VFEZ

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MaddoScientisto 2025-03-09 15:58:26 +01:00
commit 6d572503cb
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18
VFEZ/Shaders/Effects/vfez_uv_fisheye.gdshaderinc Normal file
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group_uniforms uv_fisheye;
uniform float uv_fisheye_center_x: hint_range(0.0, 1.0) = 0.5;
uniform float uv_fisheye_center_y: hint_range(0.0, 1.0) = 0.5;
uniform float uv_fisheye_amount = 0.1;
group_uniforms;
vec2 uv_fisheye(vec2 uv, vec2 main_texture_scale)
{
vec2 center = vec2(uv_fisheye_center_x * main_texture_scale.x,
uv_fisheye_center_y * main_texture_scale.y);
float bind = length(center);
vec2 dF = uv - center;
float dFlen = length(dF);
float fishInt = (PI / bind) * (uv_fisheye_amount + 0.001);
uv = center + (dF / max(0.0001, dFlen)) * tan(dFlen * fishInt) * bind / tan(bind * fishInt);
return uv;
}