// GC.Alloc
// VolumeParameter`.op_Equality()
public bool UpdateEnvironment(SkyUpdateContext skyContext, HDCamera camera, Light sunLight, bool updateRequired, bool updateAmbientProbe, CommandBuffer cmd)
{
bool result = false;
if (skyContext.IsValid())
{
skyContext.currentUpdateTime += Time.deltaTime;
m_BuiltinParameters.commandBuffer = cmd;
m_BuiltinParameters.sunLight = sunLight;
m_BuiltinParameters.screenSize = m_CubemapScreenSize;
m_BuiltinParameters.cameraPosWS = camera.camera.transform.position;
m_BuiltinParameters.hdCamera = null;
m_BuiltinParameters.debugSettings = null; // We don't want any debug when updating the environment.
int sunHash = 0;
if (sunLight != null)
{
sunHash = GetSunLightHashCode(sunLight);
}
int skyHash = sunHash * 23 + skyContext.skySettings.GetHashCode();
bool forceUpdate = (updateRequired || skyContext.updatedFramesRequired > 0 || m_NeedUpdate);
if (forceUpdate ||
(skyContext.skySettings.updateMode == EnvironementUpdateMode.OnChanged && skyHash != skyContext.skyParametersHash) ||
(skyContext.skySettings.updateMode == EnvironementUpdateMode.Realtime && skyContext.currentUpdateTime > skyContext.skySettings.updatePeriod.value))
{
using (new ProfilingSample(cmd, "Sky Environment Pass"))
{
using (new ProfilingSample(cmd, "Update Env: Generate Lighting Cubemap"))
{
RenderSkyToCubemap(skyContext);
if (updateAmbientProbe)
{
using (new ProfilingSample(cmd, "Update Ambient Probe"))
{
cmd.SetComputeBufferParam(m_ComputeAmbientProbeCS, m_ComputeAmbientProbeKernel, m_AmbientProbeOutputBufferParam, m_AmbientProbeResult);
cmd.SetComputeTextureParam(m_ComputeAmbientProbeCS, m_ComputeAmbientProbeKernel, m_AmbientProbeInputCubemap, m_SkyboxCubemapRT);
cmd.DispatchCompute(m_ComputeAmbientProbeCS, m_ComputeAmbientProbeKernel, 1, 1, 1);
cmd.RequestAsyncReadback(m_AmbientProbeResult, OnComputeAmbientProbeDone);
}
}
}
if (m_SupportsConvolution)
{
using (new ProfilingSample(cmd, "Update Env: Convolve Lighting Cubemap"))
{
RenderCubemapGGXConvolution(skyContext);
}
}
result = true;
skyContext.skyParametersHash = skyHash;
skyContext.currentUpdateTime = 0.0f;
skyContext.updatedFramesRequired--;
m_NeedUpdate = false;
#if UNITY_EDITOR
// In the editor when we change the sky we want to make the GI dirty so when baking again the new sky is taken into account.
// Changing the hash of the rendertarget allow to say that GI is dirty
m_SkyboxCubemapRT.rt.imageContentsHash = new Hash128((uint)skyContext.skySettings.GetHashCode(), 0, 0, 0);
#endif
}
}
}
else
{
if (skyContext.skyParametersHash != 0)
{
using (new ProfilingSample(cmd, "Clear Sky Environment Pass"))
{
CoreUtils.ClearCubemap(cmd, m_SkyboxCubemapRT, Color.black, true);
if (m_SupportsConvolution)
{
CoreUtils.ClearCubemap(cmd, m_SkyboxBSDFCubemapIntermediate, Color.black, true);
for (int bsdfIdx = 0; bsdfIdx < m_IBLFilterArray.Length; ++bsdfIdx)
{
for (int face = 0; face < 6; ++face)
{
cmd.CopyTexture(m_SkyboxBSDFCubemapIntermediate, face, m_SkyboxBSDFCubemapArray, 6 * bsdfIdx + face);
}
}
}
}
skyContext.skyParametersHash = 0;
result = true;
}
}
return(result);
}
public bool UpdateEnvironment(SkyUpdateContext skyContext, HDCamera camera, Light sunLight, bool updateRequired, CommandBuffer cmd)
{
bool result = false;
if (skyContext.IsValid())
{
skyContext.currentUpdateTime += Time.deltaTime;
m_BuiltinParameters.commandBuffer = cmd;
m_BuiltinParameters.sunLight = sunLight;
m_BuiltinParameters.screenSize = m_CubemapScreenSize;
m_BuiltinParameters.cameraPosWS = camera.camera.transform.position;
m_BuiltinParameters.hdCamera = null;
int sunHash = 0;
if (sunLight != null)
{
sunHash = (sunLight.GetHashCode() * 23 + sunLight.transform.position.GetHashCode()) * 23 + sunLight.transform.rotation.GetHashCode();
}
int skyHash = sunHash * 23 + skyContext.skySettings.GetHashCode();
bool forceUpdate = (updateRequired || skyContext.updatedFramesRequired > 0 || m_NeedUpdate);
if (forceUpdate ||
(skyContext.skySettings.updateMode == EnvironementUpdateMode.OnChanged && skyHash != skyContext.skyParametersHash) ||
(skyContext.skySettings.updateMode == EnvironementUpdateMode.Realtime && skyContext.currentUpdateTime > skyContext.skySettings.updatePeriod))
{
using (new ProfilingSample(cmd, "Sky Environment Pass"))
{
using (new ProfilingSample(cmd, "Update Env: Generate Lighting Cubemap"))
{
RenderSkyToCubemap(skyContext);
}
if (m_SupportsConvolution)
{
using (new ProfilingSample(cmd, "Update Env: Convolve Lighting Cubemap"))
{
RenderCubemapGGXConvolution(skyContext);
}
}
result = true;
skyContext.skyParametersHash = skyHash;
skyContext.currentUpdateTime = 0.0f;
skyContext.updatedFramesRequired--;
m_NeedUpdate = false;
#if UNITY_EDITOR
// In the editor when we change the sky we want to make the GI dirty so when baking again the new sky is taken into account.
// Changing the hash of the rendertarget allow to say that GI is dirty
m_SkyboxCubemapRT.rt.imageContentsHash = new Hash128((uint)skyContext.skySettings.GetHashCode(), 0, 0, 0);
#endif
}
}
}
else
{
if (skyContext.skyParametersHash != 0)
{
CoreUtils.ClearCubemap(cmd, m_SkyboxCubemapRT, Color.black, true);
if (m_SupportsConvolution)
{
CoreUtils.ClearCubemap(cmd, m_SkyboxGGXCubemapRT, Color.black, true);
}
skyContext.skyParametersHash = 0;
result = true;
}
}
return(result);
}
public void UpdateEnvironment(HDCamera camera, Light sunLight, CommandBuffer cmd)
{
if (m_LastFrameUpdated == Time.frameCount)
{
return;
}
m_LastFrameUpdated = Time.frameCount;
// We need one frame delay for this update to work since DynamicGI.UpdateEnvironment is executed directly but the renderloop is not (so we need to wait for the sky texture to be rendered first)
if (m_NeedLowLevelUpdateEnvironment)
{
using (new ProfilingSample(cmd, "DynamicGI.UpdateEnvironment"))
{
// TODO: Properly send the cubemap to Enlighten. Currently workaround is to set the cubemap in a Skybox/cubemap material
float intensity = IsSkyValid() ? 1.0f : 0.0f; // Eliminate all diffuse if we don't have a skybox (meaning for now the background is black in HDRP)
m_StandardSkyboxMaterial.SetTexture("_Tex", m_SkyboxCubemapRT);
RenderSettings.skybox = m_StandardSkyboxMaterial; // Setup this material as the default to be use in RenderSettings
RenderSettings.ambientIntensity = intensity;
RenderSettings.ambientMode = AmbientMode.Skybox; // Force skybox for our HDRI
RenderSettings.reflectionIntensity = intensity;
RenderSettings.customReflection = null;
DynamicGI.UpdateEnvironment();
m_NeedLowLevelUpdateEnvironment = false;
}
}
if (IsSkyValid())
{
m_CurrentUpdateTime += Time.deltaTime;
m_BuiltinParameters.commandBuffer = cmd;
m_BuiltinParameters.sunLight = sunLight;
m_BuiltinParameters.screenSize = m_CubemapScreenSize;
m_BuiltinParameters.cameraPosWS = camera.camera.transform.position;
int sunHash = 0;
if (sunLight != null)
{
sunHash = (sunLight.GetHashCode() * 23 + sunLight.transform.position.GetHashCode()) * 23 + sunLight.transform.rotation.GetHashCode();
}
int skyHash = sunHash * 23 + skySettings.GetHashCode();
if (m_UpdatedFramesRequired > 0 ||
(skySettings.updateMode == EnvironementUpdateMode.OnChanged && skyHash != m_SkyParametersHash) ||
(skySettings.updateMode == EnvironementUpdateMode.Realtime && m_CurrentUpdateTime > skySettings.updatePeriod))
{
using (new ProfilingSample(cmd, "Sky Environment Pass"))
{
using (new ProfilingSample(cmd, "Update Env: Generate Lighting Cubemap"))
{
// Render sky into a cubemap - doesn't happen every frame, can be controlled
// Note that m_SkyboxCubemapRT is created with auto-generate mipmap, it mean that here we have also our mipmap correctly box filtered for importance sampling.
if (m_SkySettings.lightingOverride == null)
{
RenderSkyToCubemap(m_BuiltinParameters, skySettings, m_SkyboxCubemapRT);
}
// In case the user overrides the lighting, we already have a cubemap ready but we need to blit it anyway for potential resize and so that we can generate proper mipmaps for enlighten.
else
{
BlitCubemap(cmd, m_SkySettings.lightingOverride, m_SkyboxCubemapRT);
}
}
// Convolve downsampled cubemap
RenderCubemapGGXConvolution(cmd, m_SkyboxCubemapRT, m_SkyboxGGXCubemapRT);
m_NeedLowLevelUpdateEnvironment = true;
m_UpdatedFramesRequired--;
m_SkyParametersHash = skyHash;
m_CurrentUpdateTime = 0.0f;
#if UNITY_EDITOR
// In the editor when we change the sky we want to make the GI dirty so when baking again the new sky is taken into account.
// Changing the hash of the rendertarget allow to say that GI is dirty
m_SkyboxCubemapRT.imageContentsHash = new Hash128((uint)skySettings.GetHashCode(), 0, 0, 0);
#endif
}
}
}
else
{
if (m_SkyParametersHash != 0)
{
using (new ProfilingSample(cmd, "Reset Sky Environment"))
{
// Clear temp cubemap and redo GGX from black and then feed it to enlighten for default light probe.
CoreUtils.ClearCubemap(cmd, m_SkyboxCubemapRT, Color.black);
RenderCubemapGGXConvolution(cmd, m_SkyboxCubemapRT, m_SkyboxGGXCubemapRT);
m_SkyParametersHash = 0;
m_NeedLowLevelUpdateEnvironment = true;
}
}
}
}
