public void OnRenderImage(RenderTexture source, RenderTexture destination)
{
if (CloudMaterial == null || curlNoise == null || blueNoiseTexture == null || lowFreqNoise == null || highFreqNoise == null) // if some script public parameters are missing, do nothing
{
Graphics.Blit(source, destination); // do nothing
return;
}
if (_cloudShapeTexture == null) // if shape texture is missing load it in
{
_cloudShapeTexture = TGALoader.load3DFromTGASlices(lowFreqNoise);
}
if (_cloudDetailTexture == null) // if detail texture is missing load it in
{
_cloudDetailTexture = TGALoader.load3DFromTGASlices(highFreqNoise);
}
Vector3 cameraPos = CurrentCamera.transform.position;
// sunLight.rotation.x 364 -> 339, 175 -> 201
float sunLightFactorUpdated = sunLightFactor;
float ambientLightFactorUpdated = ambientLightFactor;
float sunAngle = sunLight.transform.eulerAngles.x;
Color sunColor = highSunColor;
float henyeyGreensteinGBackwardLerp = henyeyGreensteinGBackward;
float noiseScale = 0.00001f + scale * 0.0004f;
if (sunAngle > 170.0f) // change sunlight color based on sun's height.
{
float gradient = Mathf.Max(0.0f, (sunAngle - 330.0f) / 30.0f);
float gradient2 = gradient * gradient;
sunLightFactorUpdated *= gradient;
ambientLightFactorUpdated *= gradient;
henyeyGreensteinGBackwardLerp *= gradient2 * gradient;
ambientLightFactorUpdated = Mathf.Max(0.02f, ambientLightFactorUpdated);
sunColor = Color.Lerp(lowSunColor, highSunColor, gradient2);
}
updateMaterialKeyword(debugNoLowFreqNoise, "DEBUG_NO_LOW_FREQ_NOISE");
updateMaterialKeyword(debugNoHighFreqNoise, "DEBUG_NO_HIGH_FREQ_NOISE");
updateMaterialKeyword(debugNoCurlNoise, "DEBUG_NO_CURL");
updateMaterialKeyword(allowFlyingInClouds, "ALLOW_IN_CLOUDS");
updateMaterialKeyword(randomUnitSphere, "RANDOM_UNIT_SPHERE");
updateMaterialKeyword(aLotMoreLightSamples, "SLOW_LIGHTING");
switch (randomJitterNoise)
{
case RandomJitter.Off:
updateMaterialKeyword(false, "RANDOM_JITTER_WHITE");
updateMaterialKeyword(false, "RANDOM_JITTER_BLUE");
break;
case RandomJitter.Random:
updateMaterialKeyword(true, "RANDOM_JITTER_WHITE");
updateMaterialKeyword(false, "RANDOM_JITTER_BLUE");
break;
case RandomJitter.BlueNoise:
updateMaterialKeyword(false, "RANDOM_JITTER_WHITE");
updateMaterialKeyword(true, "RANDOM_JITTER_BLUE");
break;
}
// send uniforms to shader
CloudMaterial.SetVector("_SunDir", sunLight.transform ? (-sunLight.transform.forward).normalized : Vector3.up);
CloudMaterial.SetVector("_PlanetCenter", planetZeroCoordinate - new Vector3(0, planetSize, 0));
CloudMaterial.SetVector("_ZeroPoint", planetZeroCoordinate);
CloudMaterial.SetColor("_SunColor", sunColor);
//CloudMaterial.SetColor("_SunColor", sunLight.color);
CloudMaterial.SetColor("_CloudBaseColor", cloudBaseColor);
CloudMaterial.SetColor("_CloudTopColor", cloudTopColor);
CloudMaterial.SetFloat("_AmbientLightFactor", ambientLightFactorUpdated);
CloudMaterial.SetFloat("_SunLightFactor", sunLightFactorUpdated);
//CloudMaterial.SetFloat("_AmbientLightFactor", sunLight.intensity * ambientLightFactor * 0.3f);
//CloudMaterial.SetFloat("_SunLightFactor", sunLight.intensity * sunLightFactor);
CloudMaterial.SetTexture("_ShapeTexture", _cloudShapeTexture);
CloudMaterial.SetTexture("_DetailTexture", _cloudDetailTexture);
CloudMaterial.SetTexture("_CurlNoise", curlNoise);
CloudMaterial.SetTexture("_BlueNoise", blueNoiseTexture);
CloudMaterial.SetVector("_Randomness", new Vector4(Random.value, Random.value, Random.value, Random.value));
CloudMaterial.SetTexture("_AltoClouds", cloudsHighTexture);
CloudMaterial.SetFloat("_CoverageHigh", 1.0f - coverageHigh);
CloudMaterial.SetFloat("_CoverageHighScale", highCoverageScale * weatherScale * 0.001f);
CloudMaterial.SetFloat("_HighCloudsScale", highCloudsScale * 0.002f);
CloudMaterial.SetFloat("_CurlDistortAmount", 150.0f + curlDistortAmount);
CloudMaterial.SetFloat("_CurlDistortScale", curlDistortScale * noiseScale);
CloudMaterial.SetFloat("_LightConeRadius", lightConeRadius);
CloudMaterial.SetFloat("_LightStepLength", lightStepLength);
CloudMaterial.SetFloat("_SphereSize", planetSize);
CloudMaterial.SetVector("_CloudHeightMinMax", new Vector2(startHeight, startHeight + thickness));
CloudMaterial.SetFloat("_Thickness", thickness);
CloudMaterial.SetFloat("_Scale", noiseScale);
CloudMaterial.SetFloat("_DetailScale", detailScale * noiseScale);
CloudMaterial.SetVector("_LowFreqMinMax", new Vector4(lowFreqMin, lowFreqMax));
CloudMaterial.SetFloat("_HighFreqModifier", highFreqModifier);
CloudMaterial.SetFloat("_WeatherScale", weatherScale * 0.00025f);
CloudMaterial.SetFloat("_Coverage", 1.0f - coverage);
CloudMaterial.SetFloat("_HenyeyGreensteinGForward", henyeyGreensteinGForward);
CloudMaterial.SetFloat("_HenyeyGreensteinGBackward", -henyeyGreensteinGBackwardLerp);
if (adjustDensity)
{
CloudMaterial.SetFloat("_SampleMultiplier", cloudSampleMultiplier * stepDensityAdjustmentCurve.Evaluate(steps / 256.0f));
}
else
{
CloudMaterial.SetFloat("_SampleMultiplier", cloudSampleMultiplier);
}
CloudMaterial.SetFloat("_Density", density);
CloudMaterial.SetFloat("_WindSpeed", _multipliedWindSpeed);
CloudMaterial.SetVector("_WindDirection", _windDirectionVector);
CloudMaterial.SetVector("_WindOffset", _windOffset);
CloudMaterial.SetVector("_CoverageWindOffset", _coverageWindOffset);
CloudMaterial.SetVector("_HighCloudsWindOffset", _highCloudsWindOffset);
CloudMaterial.SetVector("_Gradient1", gradientToVector4(gradientLow));
CloudMaterial.SetVector("_Gradient2", gradientToVector4(gradientMed));
CloudMaterial.SetVector("_Gradient3", gradientToVector4(gradientHigh));
CloudMaterial.SetInt("_Steps", steps);
CloudMaterial.SetInt("_renderInFront", renderInFront);//v0.1 choose to render in front of objects for reflections
CloudMaterial.SetMatrix("_FrustumCornersES", GetFrustumCorners(CurrentCamera));
CloudMaterial.SetMatrix("_CameraInvViewMatrix", CurrentCamera.cameraToWorldMatrix);
CloudMaterial.SetVector("_CameraWS", cameraPos);
CloudMaterial.SetVector("_CameraWSOffset", _CameraWSOffset);
CloudMaterial.SetFloat("_FarPlane", CurrentCamera.farClipPlane);
//v0.2
//v3.5.3
CloudMaterial.SetTexture("_InteractTexture", _InteractTexture);
CloudMaterial.SetVector("_InteractTexturePos", _InteractTexturePos);
CloudMaterial.SetVector("_InteractTextureAtr", _InteractTextureAtr);
CloudMaterial.SetVector("_InteractTextureOffset", _InteractTextureOffset); //v4.0
//////// SCATTER
//Camera cam = GetComponent<Camera>(); //v2.1.15
//Transform camtr = cam.transform;
//float camNear = cam.nearClipPlane;
//float camFar = cam.farClipPlane;
//float camFov = cam.fieldOfView;
//float camAspect = cam.aspect;
//Matrix4x4 frustumCorners = Matrix4x4.identity;
//float fovWHalf = camFov * 0.5f;
//Vector3 toRight = camtr.right * camNear * Mathf.Tan(fovWHalf * Mathf.Deg2Rad) * camAspect;
//Vector3 toTop = camtr.up * camNear * Mathf.Tan(fovWHalf * Mathf.Deg2Rad);
//Vector3 topLeft = (camtr.forward * camNear - toRight + toTop);
//float camScale = topLeft.magnitude * camFar / camNear;
//topLeft.Normalize();
//topLeft *= camScale;
//Vector3 topRight = (camtr.forward * camNear + toRight + toTop);
//topRight.Normalize();
//topRight *= camScale;
//Vector3 bottomRight = (camtr.forward * camNear + toRight - toTop);
//bottomRight.Normalize();
//bottomRight *= camScale;
//Vector3 bottomLeft = (camtr.forward * camNear - toRight - toTop);
//bottomLeft.Normalize();
//bottomLeft *= camScale;
//frustumCorners.SetRow(0, topLeft);
//frustumCorners.SetRow(1, topRight);
//frustumCorners.SetRow(2, bottomRight);
//frustumCorners.SetRow(3, bottomLeft);
CloudMaterial.SetInt("scatterOn", scatterOn); //v0.3
CloudMaterial.SetInt("sunRaysOn", sunRaysOn); //v0.3
CloudMaterial.SetFloat("zeroCountSteps", zeroCountSteps); //v0.3
CloudMaterial.SetInt("sunShaftSteps", sunShaftSteps); //v0.3
//var camPos = camtr.position;
float FdotC = CurrentCamera.transform.position.y - height;
float paramK = (FdotC <= 0.0f ? 1.0f : 0.0f);
//fogMaterial.SetMatrix("_FrustumCornersWS", frustumCorners);
//fogMaterial.SetVector("_CameraWS", camPos);
CloudMaterial.SetVector("_HeightParams", new Vector4(height, FdotC, paramK, heightDensity * 0.5f));
CloudMaterial.SetVector("_DistanceParams", new Vector4(-Mathf.Max(startDistance, 0.0f), 0, 0, 0));
//v3.5.1
//fogMaterial.SetFloat("_NearZCutoff", _NearZCutoff);
//fogMaterial.SetFloat("_HorizonYAdjust", _HorizonYAdjust);
//fogMaterial.SetFloat("_HorizonZAdjust", _HorizonZAdjust);//v2.1.24
//fogMaterial.SetFloat("_FadeThreshold", _FadeThreshold);
//v3.5
//fogMaterial.SetFloat("_SampleCount0", _SampleCount0);
//fogMaterial.SetFloat("_SampleCount1", _SampleCount1);
//fogMaterial.SetInt("_SampleCountL", _SampleCountL);
//fogMaterial.SetFloat("_NoiseFreq1", _NoiseFreq1);
//fogMaterial.SetFloat("_NoiseFreq2", _NoiseFreq2);
//fogMaterial.SetFloat("_NoiseAmp1", _NoiseAmp1);
//fogMaterial.SetFloat("_NoiseAmp2", _NoiseAmp2);
//fogMaterial.SetFloat("_NoiseBias", _NoiseBias);
//fogMaterial.SetVector("_Scroll1", _Scroll1);
//fogMaterial.SetVector("_Scroll2", _Scroll2);
//fogMaterial.SetFloat("_Altitude0", _Altitude0);
//fogMaterial.SetFloat("_Altitude1", _Altitude1);
//fogMaterial.SetFloat("_FarDist", _FarDist);
CloudMaterial.SetFloat("_Scatter", _Scatter);
CloudMaterial.SetFloat("_HGCoeff", _HGCoeff);
CloudMaterial.SetFloat("_Extinct", _Extinct);
// CloudMaterial.SetFloat("_Exposure", _ExposureUnder); //v4.0
// CloudMaterial.SetVector("_GroundColor", _GroundColor);//
// CloudMaterial.SetFloat("_SunSize", _SunSize);
CloudMaterial.SetVector("_SkyTint", _SkyTint);
//fogMaterial.SetFloat("_AtmosphereThickness", _AtmosphereThickness);
//v3.5
CloudMaterial.SetFloat("_BackShade", _BackShade);
//fogMaterial.SetFloat("_UndersideCurveFactor", _UndersideCurveFactor);
//v2.1.19
if (localLight != null)
{
Vector3 localLightPos = localLight.transform.position;
//float intensity = Mathf.Pow(10, 3 + (localLightFalloff - 3) * 3);
currentLocalLightIntensity = Mathf.Pow(10, 3 + (localLightFalloff - 3) * 3);
//fogMaterial.SetVector ("_LocalLightPos", new Vector4 (localLightPos.x, localLightPos.y, localLightPos.z, localLight.intensity * localLightIntensity * intensity));
CloudMaterial.SetVector("_LocalLightPos", new Vector4(localLightPos.x, localLightPos.y, localLightPos.z, localLight.intensity * localLightIntensity * currentLocalLightIntensity));
CloudMaterial.SetVector("_LocalLightColor", new Vector4(localLight.color.r, localLight.color.g, localLight.color.b, localLightFalloff));
}
else
{
if (currentLocalLightIntensity > 0)
{
currentLocalLightIntensity = 0;
//fogMaterial.SetVector ("_LocalLightPos", new Vector4 (localLightPos.x, localLightPos.y, localLightPos.z, localLight.intensity * localLightIntensity * intensity));
CloudMaterial.SetVector("_LocalLightColor", Vector4.zero);
}
}
//SM v1.7
CloudMaterial.SetFloat("luminance", luminance);
CloudMaterial.SetFloat("lumFac", lumFac);
CloudMaterial.SetFloat("Multiplier1", ScatterFac);
CloudMaterial.SetFloat("Multiplier2", TurbFac);
CloudMaterial.SetFloat("Multiplier3", HorizFac);
CloudMaterial.SetFloat("turbidity", turbidity);
CloudMaterial.SetFloat("reileigh", reileigh);
CloudMaterial.SetFloat("mieCoefficient", mieCoefficient);
CloudMaterial.SetFloat("mieDirectionalG", mieDirectionalG);
CloudMaterial.SetFloat("bias", bias);
CloudMaterial.SetFloat("contrast", contrast);
CloudMaterial.SetVector("v3LightDir", -sunLight.transform.forward);
CloudMaterial.SetVector("_TintColor", new Vector4(TintColor.x, TintColor.y, TintColor.z, 1));//68, 155, 345
float Foggy = 0;
if (FogSky)
{
Foggy = 1;
}
CloudMaterial.SetFloat("FogSky", Foggy);
CloudMaterial.SetFloat("ClearSkyFac", ClearSkyFac);
var sceneMode = RenderSettings.fogMode;
var sceneDensity = 0.01f; //RenderSettings.fogDensity;//v3.0
var sceneStart = RenderSettings.fogStartDistance;
var sceneEnd = RenderSettings.fogEndDistance;
Vector4 sceneParams;
bool linear = (sceneMode == FogMode.Linear);
float diff = linear ? sceneEnd - sceneStart : 0.0f;
float invDiff = Mathf.Abs(diff) > 0.0001f ? 1.0f / diff : 0.0f;
sceneParams.x = sceneDensity * 1.2011224087f; // density / sqrt(ln(2)), used by Exp2 fog mode
sceneParams.y = sceneDensity * 1.4426950408f; // density / ln(2), used by Exp fog mode
sceneParams.z = linear ? -invDiff : 0.0f;
sceneParams.w = linear ? sceneEnd * invDiff : 0.0f;
CloudMaterial.SetVector("_SceneFogParams", sceneParams);
CloudMaterial.SetVector("_SceneFogMode", new Vector4((int)sceneMode, useRadialDistance ? 1 : 0, 0, 0));
////////// END SCATTER
// get cloud render texture and render clouds to it
RenderTexture rtClouds = RenderTexture.GetTemporary((int)(source.width / ((float)downSample)), (int)(source.height / ((float)downSample)), 0, source.format, RenderTextureReadWrite.Default, source.antiAliasing);
CustomGraphicsBlit(source, rtClouds, CloudMaterial, 0);
//v5.1.1
if (enableEdgeControl)
{
//UpscaleMaterial.SetTexture("_Clouds", rtClouds);
UpscaleMaterial.SetVector("edgeControl", edgeControl);
//UpscaleMaterial.SetInt("enableEdges", 1);
if (debugClouds > 0)
{
UpscaleMaterial.SetInt("enableEdges", debugClouds - 1);
}
else
{
UpscaleMaterial.SetInt("enableEdges", 1);
}
RenderTexture rtTemporalA = RenderTexture.GetTemporary(rtClouds.width, rtClouds.height, 0, rtClouds.format, RenderTextureReadWrite.Default);
//v5.1.1
// CustomGraphicsBlit(rtClouds, rtTemporalA, UpscaleMaterial, 1);
Graphics.Blit(rtClouds, rtTemporalA, UpscaleMaterial, 1);
if (temporalAntiAliasing && Application.isPlaying) // if TAA is enabled, then apply it to cloud render texture //v5.1.0
{
RenderTexture rtTemporal = RenderTexture.GetTemporary(rtClouds.width, rtClouds.height, 0, rtClouds.format, RenderTextureReadWrite.Default, source.antiAliasing);
_temporalAntiAliasing.TemporalAntiAliasing(rtTemporalA, rtTemporal);
UpscaleMaterial.SetTexture("_Clouds", rtTemporal);
// Apply clouds to background
if (debugClouds > 0)
{
Graphics.Blit(rtTemporalA, destination, UpscaleMaterial, 0);
}
else
{
Graphics.Blit(source, destination, UpscaleMaterial, 0);
}
RenderTexture.ReleaseTemporary(rtTemporal);
}
else
{
UpscaleMaterial.SetTexture("_Clouds", rtTemporalA); //
// Apply clouds to background
if (debugClouds > 0)
{
Graphics.Blit(rtTemporalA, destination, UpscaleMaterial, 0);
}
else
{
Graphics.Blit(source, destination, UpscaleMaterial, 0);
}
}
RenderTexture.ReleaseTemporary(rtClouds); RenderTexture.ReleaseTemporary(rtTemporalA);
}
else
{
UpscaleMaterial.SetInt("enableEdges", 0);
if (temporalAntiAliasing && Application.isPlaying) // if TAA is enabled, then apply it to cloud render texture //v5.1.0
{
RenderTexture rtTemporal = RenderTexture.GetTemporary(rtClouds.width, rtClouds.height, 0, rtClouds.format, RenderTextureReadWrite.Default, source.antiAliasing);
_temporalAntiAliasing.TemporalAntiAliasing(rtClouds, rtTemporal);
UpscaleMaterial.SetTexture("_Clouds", rtTemporal);
RenderTexture.ReleaseTemporary(rtTemporal);
}
else
{
UpscaleMaterial.SetTexture("_Clouds", rtClouds); //
}
// Apply clouds to background
Graphics.Blit(source, destination, UpscaleMaterial, 0);
RenderTexture.ReleaseTemporary(rtClouds);
}
}
public void OnRenderImage(RenderTexture source, RenderTexture destination)
{
if (CloudMaterial == null || curlNoise == null || blueNoiseTexture == null || lowFreqNoise == null || highFreqNoise == null) // if some script public parameters are missing, do nothing
{
Graphics.Blit(source, destination); // do nothing
return;
}
if (_cloudShapeTexture == null) // if shape texture is missing load it in
{
_cloudShapeTexture = TGALoader.load3DFromTGASlices(lowFreqNoise);
}
if (_cloudDetailTexture == null) // if detail texture is missing load it in
{
_cloudDetailTexture = TGALoader.load3DFromTGASlices(highFreqNoise);
}
Vector3 cameraPos = CurrentCamera.transform.position;
// sunLight.rotation.x 364 -> 339, 175 -> 201
float sunLightFactorUpdated = sunLightFactor;
float ambientLightFactorUpdated = ambientLightFactor;
float sunAngle = sunLight.transform.eulerAngles.x;
Color sunColor = highSunColor;
float henyeyGreensteinGBackwardLerp = henyeyGreensteinGBackward;
float noiseScale = 0.00001f + scale * 0.0004f;
if (sunAngle > 170.0f) // change sunlight color based on sun's height.
{
float gradient = Mathf.Max(0.0f, (sunAngle - 330.0f) / 30.0f);
float gradient2 = gradient * gradient;
sunLightFactorUpdated *= gradient;
ambientLightFactorUpdated *= gradient;
henyeyGreensteinGBackwardLerp *= gradient2 * gradient;
ambientLightFactorUpdated = Mathf.Max(0.02f, ambientLightFactorUpdated);
sunColor = Color.Lerp(lowSunColor, highSunColor, gradient2);
}
updateMaterialKeyword(debugNoLowFreqNoise, "DEBUG_NO_LOW_FREQ_NOISE");
updateMaterialKeyword(debugNoHighFreqNoise, "DEBUG_NO_HIGH_FREQ_NOISE");
updateMaterialKeyword(debugNoCurlNoise, "DEBUG_NO_CURL");
updateMaterialKeyword(allowFlyingInClouds, "ALLOW_IN_CLOUDS");
updateMaterialKeyword(randomUnitSphere, "RANDOM_UNIT_SPHERE");
updateMaterialKeyword(aLotMoreLightSamples, "SLOW_LIGHTING");
switch (randomJitterNoise)
{
case RandomJitter.Off:
updateMaterialKeyword(false, "RANDOM_JITTER_WHITE");
updateMaterialKeyword(false, "RANDOM_JITTER_BLUE");
break;
case RandomJitter.Random:
updateMaterialKeyword(true, "RANDOM_JITTER_WHITE");
updateMaterialKeyword(false, "RANDOM_JITTER_BLUE");
break;
case RandomJitter.BlueNoise:
updateMaterialKeyword(false, "RANDOM_JITTER_WHITE");
updateMaterialKeyword(true, "RANDOM_JITTER_BLUE");
break;
}
// send uniforms to shader
CloudMaterial.SetVector("_SunDir", sunLight.transform ? (-sunLight.transform.forward).normalized : Vector3.up);
CloudMaterial.SetVector("_PlanetCenter", planetZeroCoordinate - new Vector3(0, planetSize, 0));
CloudMaterial.SetVector("_ZeroPoint", planetZeroCoordinate);
CloudMaterial.SetColor("_SunColor", sunColor);
//CloudMaterial.SetColor("_SunColor", sunLight.color);
CloudMaterial.SetColor("_CloudBaseColor", cloudBaseColor);
CloudMaterial.SetColor("_CloudTopColor", cloudTopColor);
CloudMaterial.SetFloat("_AmbientLightFactor", ambientLightFactorUpdated);
CloudMaterial.SetFloat("_SunLightFactor", sunLightFactorUpdated);
//CloudMaterial.SetFloat("_AmbientLightFactor", sunLight.intensity * ambientLightFactor * 0.3f);
//CloudMaterial.SetFloat("_SunLightFactor", sunLight.intensity * sunLightFactor);
CloudMaterial.SetTexture("_ShapeTexture", _cloudShapeTexture);
CloudMaterial.SetTexture("_DetailTexture", _cloudDetailTexture);
CloudMaterial.SetTexture("_CurlNoise", curlNoise);
CloudMaterial.SetTexture("_BlueNoise", blueNoiseTexture);
CloudMaterial.SetVector("_Randomness", new Vector4(Random.value, Random.value, Random.value, Random.value));
CloudMaterial.SetTexture("_AltoClouds", cloudsHighTexture);
CloudMaterial.SetFloat("_CoverageHigh", 1.0f - coverageHigh);
CloudMaterial.SetFloat("_CoverageHighScale", highCoverageScale * weatherScale * 0.001f);
CloudMaterial.SetFloat("_HighCloudsScale", highCloudsScale * 0.002f);
CloudMaterial.SetFloat("_CurlDistortAmount", 150.0f + curlDistortAmount);
CloudMaterial.SetFloat("_CurlDistortScale", curlDistortScale * noiseScale);
CloudMaterial.SetFloat("_LightConeRadius", lightConeRadius);
CloudMaterial.SetFloat("_LightStepLength", lightStepLength);
CloudMaterial.SetFloat("_SphereSize", planetSize);
CloudMaterial.SetVector("_CloudHeightMinMax", new Vector2(startHeight, startHeight + thickness));
CloudMaterial.SetFloat("_Thickness", thickness);
CloudMaterial.SetFloat("_Scale", noiseScale);
CloudMaterial.SetFloat("_DetailScale", detailScale * noiseScale);
CloudMaterial.SetVector("_LowFreqMinMax", new Vector4(lowFreqMin, lowFreqMax));
CloudMaterial.SetFloat("_HighFreqModifier", highFreqModifier);
CloudMaterial.SetFloat("_WeatherScale", weatherScale * 0.00025f);
CloudMaterial.SetFloat("_Coverage", 1.0f - coverage);
CloudMaterial.SetFloat("_HenyeyGreensteinGForward", henyeyGreensteinGForward);
CloudMaterial.SetFloat("_HenyeyGreensteinGBackward", -henyeyGreensteinGBackwardLerp);
if (adjustDensity)
{
CloudMaterial.SetFloat("_SampleMultiplier", cloudSampleMultiplier * stepDensityAdjustmentCurve.Evaluate(steps / 256.0f));
}
else
{
CloudMaterial.SetFloat("_SampleMultiplier", cloudSampleMultiplier);
}
CloudMaterial.SetFloat("_Density", density);
CloudMaterial.SetFloat("_WindSpeed", _multipliedWindSpeed);
CloudMaterial.SetVector("_WindDirection", _windDirectionVector);
CloudMaterial.SetVector("_WindOffset", _windOffset);
CloudMaterial.SetVector("_CoverageWindOffset", _coverageWindOffset);
CloudMaterial.SetVector("_HighCloudsWindOffset", _highCloudsWindOffset);
CloudMaterial.SetVector("_Gradient1", gradientToVector4(gradientLow));
CloudMaterial.SetVector("_Gradient2", gradientToVector4(gradientMed));
CloudMaterial.SetVector("_Gradient3", gradientToVector4(gradientHigh));
CloudMaterial.SetInt("_Steps", steps);
CloudMaterial.SetMatrix("_FrustumCornersES", GetFrustumCorners(CurrentCamera));
CloudMaterial.SetMatrix("_CameraInvViewMatrix", CurrentCamera.cameraToWorldMatrix);
CloudMaterial.SetVector("_CameraWS", cameraPos);
CloudMaterial.SetFloat("_FarPlane", CurrentCamera.farClipPlane);
// get cloud render texture and render clouds to it
RenderTexture rtClouds = RenderTexture.GetTemporary((int)(source.width / ((float)downSample)), (int)(source.height / ((float)downSample)), 0, source.format, RenderTextureReadWrite.Default, source.antiAliasing);
CustomGraphicsBlit(source, rtClouds, CloudMaterial, 0);
if (temporalAntiAliasing) // if TAA is enabled, then apply it to cloud render texture
{
RenderTexture rtTemporal = RenderTexture.GetTemporary(rtClouds.width, rtClouds.height, 0, rtClouds.format, RenderTextureReadWrite.Default, source.antiAliasing);
_temporalAntiAliasing.TemporalAntiAliasing(rtClouds, rtTemporal);
UpscaleMaterial.SetTexture("_Clouds", rtTemporal);
RenderTexture.ReleaseTemporary(rtTemporal);
}
else
{
UpscaleMaterial.SetTexture("_Clouds", rtClouds);
}
// Apply clouds to background
Graphics.Blit(source, destination, UpscaleMaterial, 0);
RenderTexture.ReleaseTemporary(rtClouds);
}
public void OnRenderImage(RenderTexture source, RenderTexture destination)
{
if (CloudMaterial == null) // if some script public parameters are missing, do nothing
{
Graphics.Blit(source, destination); // do nothing
return;
}
Vector3 cameraPos = CurrentCamera.transform.position;
float sunLightFactorUpdated = sunLightFactor;
float ambientLightFactorUpdated = ambientLightFactor;
float sunAngle = sunLight.transform.eulerAngles.x;
Color sunColor = highSunColor;
float henyeyGreensteinGBackwardLerp = henyeyGreensteinGBackward;
float noiseScale = 0.00001f + scale * 0.0004f;
if (sunAngle > 170.0f) // change sunlight color based on sun's height.
{
float gradient = Mathf.Max(0.0f, (sunAngle - 330.0f) / 30.0f);
float gradient2 = gradient * gradient;
sunLightFactorUpdated *= gradient;
ambientLightFactorUpdated *= gradient;
henyeyGreensteinGBackwardLerp *= gradient2 * gradient;
ambientLightFactorUpdated = Mathf.Max(0.02f, ambientLightFactorUpdated);
sunColor = Color.Lerp(lowSunColor, highSunColor, gradient2);
}
updateMaterialKeyword(debugNoLowFreqNoise, "DEBUG_NO_LOW_FREQ_NOISE");
updateMaterialKeyword(debugNoHighFreqNoise, "DEBUG_NO_HIGH_FREQ_NOISE");
updateMaterialKeyword(debugNoBeer, "DEBUG_NO_BEER");
updateMaterialKeyword(debugNoPowderEffect, "DEBUG_NO_POWDER_EFFECT");
updateMaterialKeyword(debugNoHG, "DEBUG_NO_HG");
updateMaterialKeyword(debugNoGradient, "DEBUG_NO_GRADIENT");
updateMaterialKeyword(debugNoLightCone, "DEBUG_NO_LIGHT_CONE");
CloudMaterial.SetVector("_SunDir", sunLight.transform ? (-sunLight.transform.forward).normalized : Vector3.up);
CloudMaterial.SetVector("_PlanetCenter", planetZeroCoordinate - new Vector3(0, planetSize, 0));
CloudMaterial.SetVector("_ZeroPoint", planetZeroCoordinate);
CloudMaterial.SetColor("_SunColor", sunColor);
CloudMaterial.SetColor("_CloudBaseColor", cloudBaseColor);
CloudMaterial.SetColor("_CloudTopColor", cloudTopColor);
CloudMaterial.SetFloat("_AmbientLightFactor", ambientLightFactorUpdated);
CloudMaterial.SetFloat("_SunLightFactor", sunLightFactorUpdated);
CloudMaterial.SetTexture("_ShapeTexture", _cloudShapeTexture);
CloudMaterial.SetTexture("_DetailTexture", _cloudDetailTexture);
CloudMaterial.SetVector("_Randomness", new Vector4(Random.value, Random.value, Random.value, Random.value));
CloudMaterial.SetFloat("_LightConeRadius", lightConeRadius);
CloudMaterial.SetFloat("_LightStepLength", lightStepLength);
CloudMaterial.SetFloat("_SphereSize", planetSize);
CloudMaterial.SetVector("_CloudHeightMinMax", new Vector2(startHeight, startHeight + thickness));
CloudMaterial.SetFloat("_Thickness", thickness);
CloudMaterial.SetFloat("_Scale", noiseScale);
CloudMaterial.SetFloat("_DetailScale", detailScale * noiseScale);
CloudMaterial.SetVector("_LowFreqMinMax", new Vector4(lowFreqMin, lowFreqMax));
CloudMaterial.SetFloat("_HighFreqModifier", highFreqModifier);
CloudMaterial.SetFloat("_WeatherScale", weatherScale * 0.00025f);
CloudMaterial.SetFloat("_Coverage", 1.0f - coverage);
CloudMaterial.SetFloat("_HenyeyGreensteinGForward", henyeyGreensteinGForward);
CloudMaterial.SetFloat("_HenyeyGreensteinGBackward", -henyeyGreensteinGBackwardLerp);
if (adjustDensity)
{
CloudMaterial.SetFloat("_SampleMultiplier", cloudSampleMultiplier * stepDensityAdjustmentCurve.Evaluate(steps / 256.0f));
}
else
{
CloudMaterial.SetFloat("_SampleMultiplier", cloudSampleMultiplier);
}
CloudMaterial.SetFloat("_Density", density);
CloudMaterial.SetTexture("_WeatherTexture", weatherTexture);
CloudMaterial.SetVector("_WindDirection", _windDirectionVector);
CloudMaterial.SetVector("_WindOffset", _windOffset);
CloudMaterial.SetVector("_CoverageWindOffset", _coverageWindOffset);
CloudMaterial.SetVector("_Gradient1", gradientToVector4(gradientLow));
CloudMaterial.SetVector("_Gradient2", gradientToVector4(gradientMed));
CloudMaterial.SetVector("_Gradient3", gradientToVector4(gradientHigh));
CloudMaterial.SetInt("_Steps", steps);
CloudMaterial.SetMatrix("_FrustumCornersES", GetFrustumCorners(CurrentCamera));
CloudMaterial.SetMatrix("_CameraInvViewMatrix", CurrentCamera.cameraToWorldMatrix);
CloudMaterial.SetVector("_CameraWS", cameraPos);
CloudMaterial.SetFloat("_FarPlane", CurrentCamera.farClipPlane);
// get cloud render texture and render clouds to it
RenderTexture rtClouds = RenderTexture.GetTemporary((int)(source.width / ((float)downSample)), (int)(source.height / ((float)downSample)), 0, source.format, RenderTextureReadWrite.Default, source.antiAliasing);
CustomGraphicsBlit(source, rtClouds, CloudMaterial, 0);
UpscaleMaterial.SetTexture("_Clouds", rtClouds);
// Apply clouds to background
Graphics.Blit(source, destination, UpscaleMaterial, 0);
//Graphics.Blit(rtClouds, destination);
RenderTexture.ReleaseTemporary(rtClouds);
}