28 lines
795 B
Plaintext
28 lines
795 B
Plaintext
// SPDX-License-Identifier: MIT
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// SPDX-FileCopyrightText: 2023 MizunagiKB <mizukb@live.jp>
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// GDCubism shader: Mul
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shader_type canvas_item;
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render_mode blend_premul_alpha, unshaded;
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uniform vec4 color_base : source_color;
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uniform vec4 color_screen : source_color;
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uniform vec4 color_multiply : source_color;
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uniform vec4 channel : source_color;
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uniform sampler2D tex_main : filter_linear_mipmap;
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varying vec4 modulate;
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void vertex() {
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modulate = COLOR;
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}
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void fragment() {
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vec4 color_tex = texture(tex_main, UV);
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color_tex.rgb = color_tex.rgb * color_multiply.rgb;
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// premul alpha
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color_tex.rgb = (color_tex.rgb + color_screen.rgb) - (color_tex.rgb * color_screen.rgb);
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vec4 color = color_tex * color_base * modulate;
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COLOR = vec4(color.rgb * color.a, color.a);
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}
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