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47 lines
1.4 KiB
GLSL
47 lines
1.4 KiB
GLSL
#version 450
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layout(location=0) in vec2 v_tex_coords;
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layout(location=1) in vec3 v_normal;
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layout(location=2) in vec3 v_position;
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layout(location=0) out vec4 f_color;
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layout(set = 0, binding = 0) uniform texture2D t_diffuse;
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layout(set = 0, binding = 1) uniform sampler s_diffuse;
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layout(set=1, binding=0)
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uniform Camera {
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vec3 u_view_position;
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mat4 u_view_proj; // unused
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};
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layout(set=2, binding=0) uniform Light {
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vec3 light_position;
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vec3 light_color;
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};
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void main() {
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vec4 object_color = texture(sampler2D(t_diffuse, s_diffuse), v_tex_coords);
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// We don't need (or want) much ambient light, so 0.1 is fine
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float ambient_strength = 0.1;
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vec3 ambient_color = light_color * ambient_strength;
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vec3 normal = normalize(v_normal);
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vec3 light_dir = normalize(light_position - v_position);
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float diffuse_strength = max(dot(normal, light_dir), 0.0);
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vec3 diffuse_color = light_color * diffuse_strength;
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vec3 view_dir = normalize(u_view_position - v_position);
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vec3 half_dir = normalize(view_dir + light_dir);
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float specular_strength = pow(max(dot(normal, half_dir), 0.0), 32);
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vec3 specular_color = specular_strength * light_color;
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vec3 result = (ambient_color + diffuse_color + specular_color) * object_color.xyz;
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// Since lights don't typically (afaik) cast transparency, so we use
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// the alpha here at the end.
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f_color = vec4(result, object_color.a);
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} |