64 lines
2.0 KiB
GLSL
64 lines
2.0 KiB
GLSL
vec2 promoOutlineOffsets[4] = vec2[4](vec2(-1.0,1.0),vec2(0.0,1.0),vec2(1.0,1.0),vec2(1.0,0.0));
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void PromoOutline(inout vec3 color, sampler2D depth) {
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float ph = 1.0 / 1080.0;
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float pw = ph / aspectRatio;
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float outlined = 1.0;
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float z = GetLinearDepth(texture2D(depth, texCoord).r) * far;
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float totalz = 0.0;
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float maxz = 0.0;
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float sampleza = 0.0;
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float samplezb = 0.0;
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int sampleCount = PROMO_OUTLINE_THICKNESS * 4;
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for(int i = 0; i < sampleCount; i++) {
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vec2 offset = (1.0 + floor(i / 4.0)) * vec2(pw, ph) * promoOutlineOffsets[int(mod(float(i), 4))];
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sampleza = GetLinearDepth(texture2D(depth, texCoord + offset).r) * far;
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samplezb = GetLinearDepth(texture2D(depth, texCoord - offset).r) * far;
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if (i < 4) maxz = max(maxz, max(sampleza, samplezb));
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outlined *= clamp(1.0 - ((sampleza + samplezb) - z * 2.0) * 32.0 / z, 0.0, 1.0);
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totalz += sampleza + samplezb;
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}
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#if PROMO_OUTLINE_MODE == 2
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float outlinea = 1.0;
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float outlineb = 1.0;
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#else
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float outlinea = 1.0 - clamp((z * 8.0 - totalz) * 64.0 / z, 0.0, 1.0) *
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clamp(1.0 - ((z * 8.0 - totalz) * 32.0 - 1.0) / z, 0.0, 1.0);
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float outlineb = clamp(1.0 + 8.0 * (z - maxz) / z, 0.0, 1.0);
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#endif
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float outAB = pow(outlinea * outlineb, 0.1);
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float outlinec = clamp(1.0 + 64.0 * (z - maxz) / z, 0.0, 1.0);
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float outline = (0.35 * outAB + 0.65) *
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(0.75 * (1.0 - outlined) * outlinec + 1.0);
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float fog = 0.0;
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#ifdef FOG1
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float fogZ = texture2D(depthtex0, texCoord).r;
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vec4 screenPos = vec4(texCoord, fogZ, 1.0);
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vec4 viewPos = gbufferProjectionInverse * (screenPos * 2.0 - 1.0);
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viewPos /= viewPos.w;
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fog = length(viewPos) / far * 1.5 * (1.5/FOG1_DISTANCE_M);
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fog = 1.0 - exp(-0.1 * pow(fog, 10));
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#endif
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float outlinePower = PROMO_OUTLINE_STRENGTH / PROMO_OUTLINE_THICKNESS;
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if (outline < 1.0) {
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outlinePower = PROMO_OUTLINE_STRENGTH;
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}
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outline = pow(outline, outlinePower);
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#if PROMO_OUTLINE_MODE == 3
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outline = abs(outline - 1.0) + 1.0;
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#endif
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vec3 color2 = color.rgb * outline;
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color = mix(color2, color, fog);
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}
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