VulkanShader_1.21.10-0.0.4-alpha.jar

• VulkanShader_1.21.10-0.0.4-alpha.jar
• assets
• vulkanmod
• shaders
• include
• fog.glsl

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    vec4 linear_fog(vec4 inColor, float vertexDistance, float fogStart, float fogEnd, vec4 fogColor) {
    return (vertexDistance <= fogStart) ? inColor : mix(inColor, fogColor, smoothstep(fogStart, fogEnd, vertexDistance) * fogColor.a);
}

float linear_fog_fade(float vertexDistance, float fogStart, float fogEnd) {
    if (vertexDistance <= fogStart) {
        return 1.0;
    } else if (vertexDistance >= fogEnd) {
        return 0.0;
    }

    return smoothstep(fogEnd, fogStart, vertexDistance);
}

float fog_distance(vec3 pos, int shape) {
    if (shape == 0) {
        return length(pos);
    } else {
        float distXZ = length(pos.xz);
        float distY = abs(pos.y);
        return max(distXZ, distY);
    }
}

float linear_fog_value(float vertexDistance, float fogStart, float fogEnd) {
    if (vertexDistance <= fogStart) {
        return 0.0;
    } else if (vertexDistance >= fogEnd) {
        return 1.0;
    }

    return (vertexDistance - fogStart) / (fogEnd - fogStart);
}

float total_fog_value(float sphericalVertexDistance, float cylindricalVertexDistance, float environmentalStart, float environmantalEnd, float renderDistanceStart, float renderDistanceEnd) {
    return max(linear_fog_value(sphericalVertexDistance, environmentalStart, environmantalEnd), linear_fog_value(cylindricalVertexDistance, renderDistanceStart, renderDistanceEnd));
}

vec4 apply_fog(vec4 inColor, float sphericalVertexDistance, float cylindricalVertexDistance, float environmentalStart, float environmantalEnd, float renderDistanceStart, float renderDistanceEnd, vec4 fogColor) {
    float fogValue = total_fog_value(sphericalVertexDistance, cylindricalVertexDistance, environmentalStart, environmantalEnd, renderDistanceStart, renderDistanceEnd);
    return vec4(mix(inColor.rgb, fogColor.rgb, fogValue * fogColor.a), inColor.a);
}

float fog_spherical_distance(vec3 pos) {
    return length(pos);
}

float fog_cylindrical_distance(vec3 pos) {
    float distXZ = length(pos.xz);
    float distY = abs(pos.y);
    return max(distXZ, distY);
}
    

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