91 lines
2.1 KiB
GLSL
91 lines
2.1 KiB
GLSL
#version 330
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precision lowp float;
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uniform float show_uvs;
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uniform vec4 fixed_color;
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uniform vec3 specular_color;
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uniform vec3 base_color;
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uniform vec3 edge_factor_0;
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uniform vec3 edge_factor_1;
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uniform vec3 edge_factor_2;
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uniform vec3 interior_factor;
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in fData {
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vec3 to_eye;
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vec3 to_light;
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vec3 normal;
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vec2 texcoord;
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vec4 color;
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#ifdef POINT_MODE
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vec2 texcoord_point;
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#endif
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} frag;
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out vec4 outColor;
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void main() {
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if (fixed_color.a != 0.0) {
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outColor = fixed_color;
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return;
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}
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#ifdef POINT_MODE
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vec2 width = fwidth(frag.texcoord_point.xy);
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if (length(frag.texcoord_point.xy-vec2(0.5)) > 0.5 && width.x < 1 && width.y < 1)
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discard;
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#endif
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vec3 Kd = base_color;
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vec3 Ks = specular_color;
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vec3 Ka = Kd * 0.2;
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vec3 to_light = normalize(frag.to_light);
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vec3 to_eye = normalize(frag.to_eye);
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vec3 normal = normalize(frag.normal);
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vec3 refl = reflect(-to_light, normal);
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float diffuse_factor = max(0.0, dot(to_light, normal));
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float specular_factor = pow(max(dot(to_eye, refl), 0.0), 10.0);
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vec3 finalColor = (Ka + Kd*diffuse_factor + Ks*specular_factor) * (1-frag.color.a) +
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frag.color.rgb * frag.color.a;
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if (show_uvs == 1.0) {
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#if POSY == 4
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bool a = abs(fract(frag.texcoord.x + 0.5) - 0.5) < 0.1;
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bool b = abs(fract(frag.texcoord.y + 0.5) - 0.5) < 0.1;
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#if ROSY == 2
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if (a && !b)
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finalColor *= edge_factor_0;
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else if (b && !a)
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finalColor *= edge_factor_1;
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else if (a && b)
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finalColor *= edge_factor_2;
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else
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finalColor *= interior_factor;
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#else
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if (a || b)
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finalColor *= edge_factor_2;
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else
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finalColor *= interior_factor;
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#endif
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#else
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const float inv_sqrt3 = 0.577350269189626;
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vec3 tx = vec3(
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frag.texcoord.x + inv_sqrt3 * frag.texcoord.y,
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frag.texcoord.x - inv_sqrt3 * frag.texcoord.y,
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2.0*inv_sqrt3 * frag.texcoord.y
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);
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bool a = abs(fract(tx.x + 0.5) - 0.5) < 0.1;
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bool b = abs(fract(tx.y + 0.5) - 0.5) < 0.1;
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bool c = abs(fract(tx.z + 0.5) - 0.5) < 0.1;
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if (a || b || c)
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finalColor *= edge_factor_2;
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else
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finalColor *= interior_factor;
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#endif
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}
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outColor = vec4(finalColor, 1.0);
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}
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