20 lines
526 B
GLSL
20 lines
526 B
GLSL
#version 410 core
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layout(location=0) in vec3 position;
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layout(location=1) in vec4 vertex_colors;
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out vec4 fragment_colors;
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// this matrix mirrors over the x-axis and the y-axis simultaneously
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const mat4 flip = mat4(
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vec4(-1.0f, 0.0f, 0.0f, 0.0f), // column 0
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vec4( 0.0f, -1.0f, 0.0f, 0.0f), // column 1
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vec4( 0.0f, 0.0f, 1.0f, 0.0f), // column 2
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vec4( 0.0f, 0.0f, 0.0f, 1.0f) // column 3
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);
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void main()
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{
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gl_Position = flip * vec4(position, 1.0f);
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fragment_colors = vertex_colors;
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}
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