LybOutlines/shaders/lib/atmospherics/clouds/mainClouds.glsl
2024-06-25 14:45:54 +02:00

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4.3 KiB
GLSL

#include "/lib/colors/lightAndAmbientColors.glsl"
#include "/lib/colors/cloudColors.glsl"
#include "/lib/atmospherics/sky.glsl"
float InterleavedGradientNoiseForClouds() {
float n = 52.9829189 * fract(0.06711056 * gl_FragCoord.x + 0.00583715 * gl_FragCoord.y);
#ifdef TAA
return fract(n + 1.61803398875 * mod(float(frameCounter), 3600.0));
#else
return fract(n);
#endif
}
#if SHADOW_QUALITY > -1
vec3 GetShadowOnCloudPosition(vec3 tracePos, vec3 cameraPos) {
vec3 wpos = PlayerToShadow(tracePos - cameraPos);
float distb = sqrt(wpos.x * wpos.x + wpos.y * wpos.y);
float distortFactor = 1.0 - shadowMapBias + distb * shadowMapBias;
vec3 shadowPosition = vec3(vec2(wpos.xy / distortFactor), wpos.z * 0.2);
return shadowPosition * 0.5 + 0.5;
}
bool GetShadowOnCloud(vec3 tracePos, vec3 cameraPos, int cloudAltitude, float lowerPlaneAltitude, float higherPlaneAltitude) {
const float cloudShadowOffset = 0.5;
vec3 shadowPosition0 = GetShadowOnCloudPosition(tracePos, cameraPos);
if (length(shadowPosition0.xy * 2.0 - 1.0) < 1.0) {
float shadowsample0 = shadow2D(shadowtex0, shadowPosition0).z;
if (shadowsample0 == 0.0) return true;
}
return false;
}
#endif
#ifdef CLOUDS_REIMAGINED
#include "/lib/atmospherics/clouds/reimaginedClouds.glsl"
#endif
#ifdef CLOUDS_UNBOUND
#include "/lib/atmospherics/clouds/unboundClouds.glsl"
#endif
vec4 GetClouds(inout float cloudLinearDepth, float skyFade, vec3 cameraPos, vec3 playerPos,
float lViewPos, float VdotS, float VdotU, float dither, vec3 auroraBorealis, vec3 nightNebula) {
vec4 clouds = vec4(0.0);
vec3 nPlayerPos = normalize(playerPos);
float lViewPosM = lViewPos < renderDistance * 1.5 ? lViewPos - 1.0 : 1000000000.0;
float skyMult0 = pow2(skyFade * 3.333333 - 2.333333);
float thresholdMix = pow2(clamp01(VdotU * 5.0));
float thresholdF = mix(far, 1000.0, thresholdMix * 0.5 + 0.5);
#ifdef DISTANT_HORIZONS
thresholdF = max(thresholdF, renderDistance);
#endif
#ifdef CLOUDS_REIMAGINED
cloudAmbientColor *= 1.0 - 0.25 * rainFactor;
#endif
vec3 cloudColorMult = vec3(1.0);
#if CLOUD_R != 100 || CLOUD_G != 100 || CLOUD_B != 100
cloudColorMult *= vec3(CLOUD_R, CLOUD_G, CLOUD_B) * 0.01;
#endif
cloudAmbientColor *= cloudColorMult;
cloudLightColor *= cloudColorMult;
#if !defined DOUBLE_REIM_CLOUDS || defined CLOUDS_UNBOUND
clouds = GetVolumetricClouds(cloudAlt1i, thresholdF, cloudLinearDepth, skyFade, skyMult0,
cameraPos, nPlayerPos, lViewPosM, VdotS, VdotU, dither);
#else
int maxCloudAlt = max(cloudAlt1i, cloudAlt2i);
int minCloudAlt = min(cloudAlt1i, cloudAlt2i);
if (abs(cameraPos.y - minCloudAlt) < abs(cameraPos.y - maxCloudAlt)) {
clouds = GetVolumetricClouds(minCloudAlt, thresholdF, cloudLinearDepth, skyFade, skyMult0,
cameraPos, nPlayerPos, lViewPosM, VdotS, VdotU, dither);
if (clouds.a == 0.0) {
clouds = GetVolumetricClouds(maxCloudAlt, thresholdF, cloudLinearDepth, skyFade, skyMult0,
cameraPos, nPlayerPos, lViewPosM, VdotS, VdotU, dither);
}
} else {
clouds = GetVolumetricClouds(maxCloudAlt, thresholdF, cloudLinearDepth, skyFade, skyMult0,
cameraPos, nPlayerPos, lViewPosM, VdotS, VdotU, dither);
if (clouds.a == 0.0) {
clouds = GetVolumetricClouds(minCloudAlt, thresholdF, cloudLinearDepth, skyFade, skyMult0,
cameraPos, nPlayerPos, lViewPosM, VdotS, VdotU, dither);
}
}
#endif
#ifdef ATM_COLOR_MULTS
clouds.rgb *= sqrtAtmColorMult; // C72380KD - Reduced atmColorMult impact on some things
#endif
#ifdef MOON_PHASE_INF_ATMOSPHERE
clouds.rgb *= moonPhaseInfluence;
#endif
#if AURORA_STYLE > 0
clouds.rgb += auroraBorealis * 0.1;
#endif
#ifdef NIGHT_NEBULA
clouds.rgb += nightNebula * 0.2;
#endif
return clouds;
}