40 lines
1.2 KiB
GLSL
40 lines
1.2 KiB
GLSL
// Copyright 2022 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#version 450 core
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#extension GL_ARB_separate_shader_objects : enable
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layout (location = 0) in vec2 frag_tex_coord;
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layout (location = 0) out vec4 color;
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// Anaglyph Red-Cyan shader based on Dubois algorithm
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// Constants taken from the paper:
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// "Conversion of a Stereo Pair to Anaglyph with
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// the Least-Squares Projection Method"
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// Eric Dubois, March 2009
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const mat3 l = mat3( 0.437, 0.449, 0.164,
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-0.062,-0.062,-0.024,
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-0.048,-0.050,-0.017);
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const mat3 r = mat3(-0.011,-0.032,-0.007,
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0.377, 0.761, 0.009,
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-0.026,-0.093, 1.234);
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layout (push_constant, std140) uniform DrawInfo {
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mat4 modelview_matrix;
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vec4 i_resolution;
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vec4 o_resolution;
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int screen_id_l;
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int screen_id_r;
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int layer;
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int reverse_interlaced;
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};
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layout (set = 0, binding = 0) uniform sampler2D screen_textures[3];
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void main() {
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vec4 color_tex_l = texture(screen_textures[screen_id_l], frag_tex_coord);
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vec4 color_tex_r = texture(screen_textures[screen_id_r], frag_tex_coord);
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color = vec4(color_tex_l.rgb*l+color_tex_r.rgb*r, color_tex_l.a);
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}
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