static void InitializeShadowData(LightweightRenderPipelineAsset settings, NativeArray <VisibleLight> visibleLights, bool mainLightCastShadows, bool additionalLightsCastShadows, out ShadowData shadowData)
{
m_ShadowBiasData.Clear();
for (int i = 0; i < visibleLights.Length; ++i)
{
Light light = visibleLights[i].light;
LWRPAdditionalLightData data =
(light != null) ? light.gameObject.GetComponent <LWRPAdditionalLightData>() : null;
if (data && !data.usePipelineSettings)
{
m_ShadowBiasData.Add(new Vector4(light.shadowBias, light.shadowNormalBias, 0.0f, 0.0f));
}
else
{
m_ShadowBiasData.Add(new Vector4(settings.shadowDepthBias, settings.shadowNormalBias, 0.0f, 0.0f));
}
}
shadowData.bias = m_ShadowBiasData;
// Until we can have keyword stripping forcing single cascade hard shadows on gles2
bool supportsScreenSpaceShadows = SystemInfo.graphicsDeviceType != GraphicsDeviceType.OpenGLES2;
//seongdae;vxsm
// compute shader for screen space shadows.
// todo : need to fix retransform for world space in screen space on OpenGLES3.1
bool supportsComputeScreenSpaceShadows =
SystemInfo.graphicsDeviceType != GraphicsDeviceType.OpenGLES2 &&
SystemInfo.graphicsDeviceType != GraphicsDeviceType.OpenGLES3;
//seongdae;vxsm
shadowData.supportsMainLightShadows = settings.supportsMainLightShadows && mainLightCastShadows;
shadowData.supportsMainLightVxShadows = settings.supportsVxShadows && mainLightCastShadows; //seongdae;vxsm
// we resolve shadows in screenspace when cascades are enabled to save ALU as computing cascade index + shadowCoord on fragment is expensive
shadowData.requiresScreenSpaceShadowResolve = shadowData.supportsMainLightShadows && supportsScreenSpaceShadows && settings.shadowCascadeOption != ShadowCascadesOption.NoCascades;
shadowData.requiresScreenSpaceShadowCompute = shadowData.supportsMainLightVxShadows && supportsComputeScreenSpaceShadows; //seongdae;vxsm
int shadowCascadesCount;
switch (settings.shadowCascadeOption)
{
case ShadowCascadesOption.FourCascades:
shadowCascadesCount = 4;
break;
case ShadowCascadesOption.TwoCascades:
shadowCascadesCount = 2;
break;
default:
shadowCascadesCount = 1;
break;
}
shadowData.mainLightShadowCascadesCount = (shadowData.requiresScreenSpaceShadowResolve) ? shadowCascadesCount : 1;
shadowData.mainLightShadowmapWidth = settings.mainLightShadowmapResolution;
shadowData.mainLightShadowmapHeight = settings.mainLightShadowmapResolution;
switch (shadowData.mainLightShadowCascadesCount)
{
case 1:
shadowData.mainLightShadowCascadesSplit = new Vector3(1.0f, 0.0f, 0.0f);
break;
case 2:
shadowData.mainLightShadowCascadesSplit = new Vector3(settings.cascade2Split, 1.0f, 0.0f);
break;
default:
shadowData.mainLightShadowCascadesSplit = settings.cascade4Split;
break;
}
//seongdae;vxsm
if (shadowData.supportsMainLightShadows && settings.supportsVxShadows)
{
int mainLightIndex = GetMainLightIndex(settings, visibleLights);
var mainLight = visibleLights[mainLightIndex].light;
var dirVxShadowMap = mainLight.GetComponent <DirectionalVxShadowMap>();
bool dirVxShadowMapIsValid = dirVxShadowMap != null && dirVxShadowMap.IsValid();
shadowData.requiresScreenSpaceShadowCompute = dirVxShadowMapIsValid;
shadowData.mainLightVxShadowQuality = (int)settings.vxShadowsQuality;
}
else
{
shadowData.requiresScreenSpaceShadowCompute = false;
shadowData.mainLightVxShadowQuality = 0;
}
//seongdae;vxsm
shadowData.supportsAdditionalLightShadows = settings.supportsAdditionalLightShadows && additionalLightsCastShadows;
shadowData.additionalLightsShadowmapWidth = shadowData.additionalLightsShadowmapHeight = settings.additionalLightsShadowmapResolution;
shadowData.supportsSoftShadows = settings.supportsSoftShadows && (shadowData.supportsMainLightShadows || shadowData.supportsAdditionalLightShadows);
shadowData.shadowmapDepthBufferBits = 16;
}
static void InitializeShadowData(LightweightRenderPipelineAsset settings, NativeArray <VisibleLight> visibleLights, bool mainLightCastShadows, bool additionalLightsCastShadows, out ShadowData shadowData)
{
m_ShadowBiasData.Clear();
for (int i = 0; i < visibleLights.Length; ++i)
{
Light light = visibleLights[i].light;
LWRPAdditionalLightData data =
(light != null) ? light.gameObject.GetComponent <LWRPAdditionalLightData>() : null;
if (data && !data.usePipelineSettings)
{
m_ShadowBiasData.Add(new Vector4(light.shadowBias, light.shadowNormalBias, 0.0f, 0.0f));
}
else
{
m_ShadowBiasData.Add(new Vector4(settings.shadowDepthBias, settings.shadowNormalBias, 0.0f, 0.0f));
}
}
shadowData.bias = m_ShadowBiasData;
// Until we can have keyword stripping forcing single cascade hard shadows on gles2
bool supportsScreenSpaceShadows = SystemInfo.graphicsDeviceType != GraphicsDeviceType.OpenGLES2;
shadowData.supportsMainLightShadows = settings.supportsMainLightShadows && mainLightCastShadows;
// we resolve shadows in screenspace when cascades are enabled to save ALU as computing cascade index + shadowCoord on fragment is expensive
shadowData.requiresScreenSpaceShadowResolve = false;
int shadowCascadesCount;
switch (settings.shadowCascadeOption)
{
case ShadowCascadesOption.FourCascades:
shadowCascadesCount = 4;
break;
case ShadowCascadesOption.TwoCascades:
shadowCascadesCount = 2;
break;
default:
shadowCascadesCount = 1;
break;
}
shadowData.mainLightShadowCascadesCount = shadowCascadesCount;
shadowData.mainLightShadowmapWidth = settings.mainLightShadowmapResolution;
shadowData.mainLightShadowmapHeight = settings.mainLightShadowmapResolution;
switch (shadowData.mainLightShadowCascadesCount)
{
case 1:
shadowData.mainLightShadowCascadesSplit = new Vector3(1.0f, 0.0f, 0.0f);
break;
case 2:
shadowData.mainLightShadowCascadesSplit = new Vector3(settings.cascade2Split, 1.0f, 0.0f);
break;
default:
shadowData.mainLightShadowCascadesSplit = settings.cascade4Split;
break;
}
shadowData.supportsAdditionalLightShadows = settings.supportsAdditionalLightShadows && additionalLightsCastShadows;
shadowData.additionalLightsShadowmapWidth = shadowData.additionalLightsShadowmapHeight = settings.additionalLightsShadowmapResolution;
shadowData.supportsSoftShadows = settings.supportsSoftShadows && (shadowData.supportsMainLightShadows || shadowData.supportsAdditionalLightShadows);
shadowData.shadowmapDepthBufferBits = 16;
}
void InitializeLightConstants(NativeArray <VisibleLight> lights, int lightIndex, out Vector4 lightPos, out Vector4 lightColor, out Vector4 lightAttenuation, out Vector4 lightSpotDir, out LightCookie cookie)
{
lightPos = k_DefaultLightPosition;
lightColor = k_DefaultLightColor;
lightAttenuation = k_DefaultLightAttenuation;
lightSpotDir = k_DefaultLightSpotDirection;
cookie = null;
// When no lights are visible, main light will be set to -1.
// In this case we initialize it to default values and return
if (lightIndex < 0)
{
return;
}
VisibleLight lightData = lights[lightIndex];
if (lightData.lightType == LightType.Directional)
{
Vector4 dir = -lightData.localToWorldMatrix.GetColumn(2);
lightPos = new Vector4(dir.x, dir.y, dir.z, 1.0f);
}
else
{
Vector4 pos = lightData.localToWorldMatrix.GetColumn(3);
lightPos = new Vector4(pos.x, pos.y, pos.z, 1.0f);
}
// VisibleLight.finalColor already returns color in active color space
lightColor = lightData.finalColor;
// Directional Light attenuation is initialize so distance attenuation always be 1.0
if (lightData.lightType != LightType.Directional)
{
// Light attenuation in lightweight matches the unity vanilla one.
// attenuation = 1.0 / distanceToLightSqr
// We offer two different smoothing factors.
// The smoothing factors make sure that the light intensity is zero at the light range limit.
// The first smoothing factor is a linear fade starting at 80 % of the light range.
// smoothFactor = (lightRangeSqr - distanceToLightSqr) / (lightRangeSqr - fadeStartDistanceSqr)
// We rewrite smoothFactor to be able to pre compute the constant terms below and apply the smooth factor
// with one MAD instruction
// smoothFactor = distanceSqr * (1.0 / (fadeDistanceSqr - lightRangeSqr)) + (-lightRangeSqr / (fadeDistanceSqr - lightRangeSqr)
// distanceSqr * oneOverFadeRangeSqr + lightRangeSqrOverFadeRangeSqr
// The other smoothing factor matches the one used in the Unity lightmapper but is slower than the linear one.
// smoothFactor = (1.0 - saturate((distanceSqr * 1.0 / lightrangeSqr)^2))^2
float lightRangeSqr = lightData.range * lightData.range;
float fadeStartDistanceSqr = 0.8f * 0.8f * lightRangeSqr;
float fadeRangeSqr = (fadeStartDistanceSqr - lightRangeSqr);
float oneOverFadeRangeSqr = 1.0f / fadeRangeSqr;
float lightRangeSqrOverFadeRangeSqr = -lightRangeSqr / fadeRangeSqr;
float oneOverLightRangeSqr = 1.0f / Mathf.Max(0.0001f, lightData.range * lightData.range);
// On mobile: Use the faster linear smoothing factor.
// On other devices: Use the smoothing factor that matches the GI.
lightAttenuation.x = Application.isMobilePlatform ? oneOverFadeRangeSqr : oneOverLightRangeSqr;
lightAttenuation.y = lightRangeSqrOverFadeRangeSqr;
}
if (lightData.lightType == LightType.Spot)
{
Vector4 dir = lightData.localToWorldMatrix.GetColumn(2);
lightSpotDir = new Vector4(-dir.x, -dir.y, -dir.z, 0.0f);
// Spot Attenuation with a linear falloff can be defined as
// (SdotL - cosOuterAngle) / (cosInnerAngle - cosOuterAngle)
// This can be rewritten as
// invAngleRange = 1.0 / (cosInnerAngle - cosOuterAngle)
// SdotL * invAngleRange + (-cosOuterAngle * invAngleRange)
// If we precompute the terms in a MAD instruction
float cosOuterAngle = Mathf.Cos(Mathf.Deg2Rad * lightData.spotAngle * 0.5f);
// We neeed to do a null check for particle lights
// This should be changed in the future
// Particle lights will use an inline function
float cosInnerAngle;
if (lightData.light != null)
{
cosInnerAngle = Mathf.Cos(LightmapperUtils.ExtractInnerCone(lightData.light) * 0.5f);
}
else
{
cosInnerAngle = Mathf.Cos((2.0f * Mathf.Atan(Mathf.Tan(lightData.spotAngle * 0.5f * Mathf.Deg2Rad) * (64.0f - 18.0f) / 64.0f)) * 0.5f);
}
float smoothAngleRange = Mathf.Max(0.001f, cosInnerAngle - cosOuterAngle);
float invAngleRange = 1.0f / smoothAngleRange;
float add = -cosOuterAngle * invAngleRange;
lightAttenuation.z = invAngleRange;
lightAttenuation.w = add;
}
Light light = lightData.light;
Texture lightTex = light.cookie;
LWRPAdditionalLightData data = light.gameObject.GetComponent <LWRPAdditionalLightData>();
if (lightTex && data)
{
cookie = new LightCookie
{
Tex = lightTex,
LightMat = light.transform.worldToLocalMatrix,
CookieSize = light.cookieSize,
Falloff = data.lightCookieFalloff,
cookieColor = data.lightCookieColor,
};
}
if (light != null && light.bakingOutput.mixedLightingMode == MixedLightingMode.Subtractive && light.bakingOutput.lightmapBakeType == LightmapBakeType.Mixed)
{
if (m_MixedLightingSetup == MixedLightingSetup.None && lightData.light.shadows != LightShadows.None)
{
m_MixedLightingSetup = MixedLightingSetup.Subtractive;
}
}
}