37 lines
1.0 KiB
GLSL
37 lines
1.0 KiB
GLSL
uniform int fog_enabled;
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uniform float custom_alpha;
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in vec2 uv;
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in vec4 color;
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out vec4 o_diffuse_color;
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#stk_include "utils/sp_texture_sampling.frag"
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void main()
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{
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vec4 diffusecolor = sampleTextureLayer0(uv);
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vec4 finalcolor = vec4(0.);
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if (fog_enabled == 0)
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{
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finalcolor = diffusecolor;
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finalcolor.xyz *= color.xyz;
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finalcolor.a *= color.a;
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}
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else
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{
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diffusecolor.xyz *= color.xyz;
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diffusecolor.a *= color.a;
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vec3 tmp = vec3(gl_FragCoord.xy / u_screen, gl_FragCoord.z);
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tmp = 2. * tmp - 1.;
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vec4 xpos = vec4(tmp, 1.0);
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xpos = u_inverse_projection_matrix * xpos;
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xpos.xyz /= xpos.w;
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float dist = length(xpos.xyz);
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float fog = smoothstep(u_fog_data.x, u_fog_data.y, dist);
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fog = min(fog, u_fog_data.z);
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finalcolor = u_fog_color * fog + diffusecolor * (1. - fog);
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}
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o_diffuse_color = vec4(finalcolor.rgb * (finalcolor.a * (1.0 - custom_alpha)),
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finalcolor.a * (1.0 - custom_alpha));
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}
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