15 lines
466 B
Plaintext
15 lines
466 B
Plaintext
shader_type canvas_item;
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uniform sampler2D screen_texture : hint_screen_texture, filter_linear_mipmap;
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uniform float rotation = 3.0;
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void fragment() {
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vec2 uv = SCREEN_UV;
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vec2 rel = uv - vec2(0.5, 0.5);
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float angle = length(rel) * rotation;
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mat2 rot = mat2(vec2(cos(angle), -sin(angle)), vec2(sin(angle), cos(angle)));
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rel = rot * rel;
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uv = clamp(rel + vec2(0.5,0.5), vec2(0.0, 0.0), vec2(1.0, 1.0));
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COLOR.rgb = textureLod(screen_texture, uv, 0.0).rgb;
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}
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