85 lines
1.9 KiB
GLSL
85 lines
1.9 KiB
GLSL
#version 330 core
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uniform vec3 u_campos;
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in vec3 v_position;
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in vec3 v_normal;
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in vec3 v_proj_normal;
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in vec2 v_texcoord;
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layout (location=0) out vec4 v_output;
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uniform sampler2D u_texture;
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float get_fog_factor(float d)
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{
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const float FogMax = 10.0;
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const float FogMin = 0.0;
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if (d >= FogMax) return 1.0;
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if (d <= FogMin) return 0.0;
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return 1 - (FogMax - d) / (FogMax - FogMin);
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}
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struct Light
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{
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vec3 position;
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vec3 diffuse;
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};
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float lambert(vec3 n, vec3 l)
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{
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vec3 nrmn = normalize(n);
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vec3 nrml = normalize(l);
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float res = dot(nrmn, nrml);
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return max(res, 0.5);
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}
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float dist(vec2 p0, vec2 pf){return sqrt((pf.x-p0.x)*(pf.x-p0.x)+(pf.y-p0.y)*(pf.y-p0.y));}
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void main()
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{
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Light light;
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light.position = vec3(3.0, -4.0, 5.0);
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light.diffuse = vec3(1.0, 1.0, 1.0);
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vec4 tex = texture(u_texture, v_texcoord);
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vec3 norm = normalize(v_normal);
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vec3 res = vec3(1.0, 0.0, 1.0) * lambert(normalize(v_normal), light.position);
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float a = dist(v_position.xy, vec2(0.0, 0.0)) * 2.0f;
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// vec4 res2 = texture2D(u_texture, v_texcoord) * ((dot(-light.position, v_normal) * 0.5)+2.5);
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vec4 texv = texture2D(u_texture, v_texcoord);
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vec4 res2 = texv * (abs(dot(-light.position, v_normal) * 0.5));
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res2.xyz *= 0.2;
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res2.a = texv.a;
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v_output = res2;
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/*
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vec3 col;
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vec4 tex = texture(u_texture, v_texcoord);
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vec3 norm = normalize(v_normal);
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vec3 dir = normalize(vec3(5.0, 0.25, -5.0) - v_position);
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float diff = max(dot(norm, dir), 0.0);
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float alpha = get_fog_factor(distance(u_campos, v_position));
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vec3 diffuse = diff * vec3(0.8, 0.75, 0.7);
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float ff = 1.75;
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if (diffuse.x > 0.0) diffuse.x *= ff;
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if (diffuse.y > 0.0) diffuse.y *= ff;
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if (diffuse.z > 0.0) diffuse.z *= ff;
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vec3 ambient = vec3(0.3, 0.3, 0.3);
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col = (ambient + diffuse) * tex.rgb;
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col *= mix(vec4(1.0), vec4(0.0f, 0.0, 0.0, 1.0), alpha-0.2).xyz;
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*/
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// vec4 tex = texture(u_texture, v_texcoord);
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// v_output = tex * vec4(vec3(1.5), 1.0);
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}
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