23 lines
548 B
GLSL
23 lines
548 B
GLSL
#version 330 core
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layout (location = 0) in vec3 v_position;
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layout (location = 1) in vec3 v_normal;
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out vec4 a_color;
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uniform mat4 projview;
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uniform mat4 model;
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void main(){
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// gl_Position = vec4(v_position, 1) * projview;
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gl_Position = projview * model * vec4(v_position, 1);
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// dot получается [-1 ... 1]
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float l = dot((model * vec4(v_position, 1)).xyz, normalize(vec3(1, 1, 1)));
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// сначала делаем диапазон [1 ... 3]
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// потом [0.5 ... 1]
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l = (l + 2) / 3;
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a_color = vec4(vec3(0.5, 0, 1) * l, 1);
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}
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