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41 lines
833 B
41 lines
833 B
#version 330 core |
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in vec3 fragmentColor; |
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in vec3 fragNormal; |
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in vec3 fragVertex; |
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uniform mat4 model; |
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uniform mat3 normal_matrix; |
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struct point_light { |
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uint light_ID; |
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vec3 position; |
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vec3 color; |
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float intensity; |
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}; |
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#define MAX_LIGHTS 10 |
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uniform point_light lights[MAX_LIGHTS]; |
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uniform int num_lights = 0; |
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out vec3 color; |
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void main() |
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{ |
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// https://www.tomdalling.com/blog/modern-opengl/06-diffuse-point-lighting |
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vec3 normal = normalize(normal_matrix * fragNormal); |
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vec3 fragPosition = vec3(model * vec4(fragVertex, 1)); |
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///// |
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//vec3 surfaceToLight = light_position - fragPosition; |
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vec3 surfaceToLight = lights[0].position - fragPosition; |
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///// |
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float brightness = dot(normal, surfaceToLight) / (length(surfaceToLight) * length(normal)); |
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brightness = clamp(brightness, 0, 1); |
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color = brightness * fragmentColor; |
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} |
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