59 lines
1.6 KiB
Plaintext
59 lines
1.6 KiB
Plaintext
// ---Фрагментный шейдер (Fragment Shader)
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varying vec2 TexCoord;
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varying float viewZ;
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varying vec3 pos;
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uniform sampler2D Texture;
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uniform float uDistanceToPlanetSurface;
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const vec4 FOG_COLOR = vec4(0.0, 0.5, 1.0, 1.0); // Синий туман
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varying vec3 worldPosition;
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uniform vec3 uViewPos;
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void main()
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{
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vec4 textureColor = texture2D(Texture, TexCoord);
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vec3 finalColor = textureColor.rgb;
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float realDist = distance(worldPosition, uViewPos);
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float alphaFactor = clamp((2000 - realDist) / 500.0, 0.0, 1.0);
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float fogFactor;
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if (uDistanceToPlanetSurface > 1000)
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{
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gl_FragColor = vec4(finalColor.rgb, 1.0);
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}
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else if (uDistanceToPlanetSurface > 100)
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{
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float t = clamp((uDistanceToPlanetSurface - 100) / 900.0, 0.0, 1.0); // 1 upstairs, 0 downstairs
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fogFactor = clamp((realDist - 2400) / (300.0*(1 + 10*t)), 0.0, 1.0);
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gl_FragColor = mix(vec4(finalColor.rgb, alphaFactor), FOG_COLOR, fogFactor*(1.0 - t));
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}
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else if (uDistanceToPlanetSurface > 40)
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{
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//From 100 to 40:
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//(1000 < realDist < 1800)
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float t = clamp((uDistanceToPlanetSurface - 40) / 60.0, 0.0, 1.0); // 1 upstairs, 0 downstairs
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fogFactor = clamp((realDist - 2400) / 300.0, 0.0, 1.0); // old fog factor
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float fogFactor2 = clamp((realDist - 1000) / 800.0, 0.0, 1.0);
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gl_FragColor = mix(vec4(finalColor.rgb, alphaFactor), FOG_COLOR, max(fogFactor, fogFactor2*(1.0 - t)));
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}
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else
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{
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fogFactor = clamp((realDist - 1000) / (800.0), 0.0, 1.0);
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gl_FragColor = mix(vec4(finalColor.rgb, alphaFactor), FOG_COLOR, fogFactor);
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}
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} |