32 lines
1.1 KiB
Plaintext
32 lines
1.1 KiB
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 x_intensity = 3.0;
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uniform float y_intensity = 0.5;
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uniform float offset = 0.0;
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uniform float speed : hint_range(0, 20) = 2.0;
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uniform float wave_frequency : hint_range(0, 100) = 20;
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uniform float wave_length : hint_range(50, 800) = 200.0;
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void fragment() {
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vec2 real_uv = UV;
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vec2 vecToBottom = vec2(1, 1) - UV.y;
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float distToBottom = length(vecToBottom);
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float final_speed = TIME * (speed / 4.0) + offset;
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float time_var = (cos(final_speed) * cos(final_speed * 4.0) * cos(final_speed * 2.0))/(200.0);
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float time_var2 = (cos(final_speed) * cos(final_speed * 6.0) * cos(final_speed * 2.0))/(200.0);
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float wave_from_x = (cos(real_uv.x * 100.0)/1000.0);
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float wave_large_from_x = cos(TIME + (real_uv.x * wave_frequency))/wave_length;
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float offset_x = time_var * (distToBottom * x_intensity) + wave_from_x + (wave_large_from_x);
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float offset_y = time_var2 * (distToBottom * y_intensity);
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vec2 distortion_offset = vec2(offset_x, offset_y);
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COLOR = texture(SCREEN_TEXTURE, SCREEN_UV + distortion_offset);
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} |