void RenderAdditionalShadowmapAtlas(ref ScriptableRenderContext context, ref CullingResults cullResults, ref LightData lightData, ref ShadowData shadowData)
{
NativeArray <VisibleLight> visibleLights = lightData.visibleLights;
bool additionalLightHasSoftShadows = false;
CommandBuffer cmd = CommandBufferPool.Get(m_ProfilerTag);
using (new ProfilingSample(cmd, m_ProfilerTag))
{
for (int i = 0; i < m_AdditionalShadowCastingLightIndices.Count; ++i)
{
int shadowLightIndex = m_AdditionalShadowCastingLightIndices[i];
VisibleLight shadowLight = visibleLights[shadowLightIndex];
if (m_AdditionalShadowCastingLightIndices.Count > 1)
{
ShadowUtils.ApplySliceTransform(ref m_AdditionalLightSlices[i], m_ShadowmapWidth, m_ShadowmapHeight);
}
var settings = new ShadowDrawingSettings(cullResults, shadowLightIndex);
Vector4 shadowBias = ShadowUtils.GetShadowBias(ref shadowLight, shadowLightIndex,
ref shadowData, m_AdditionalLightSlices[i].projectionMatrix, m_AdditionalLightSlices[i].resolution);
ShadowUtils.SetupShadowCasterConstantBuffer(cmd, ref shadowLight, shadowBias);
ShadowUtils.RenderShadowSlice(cmd, ref context, ref m_AdditionalLightSlices[i], ref settings, m_AdditionalLightSlices[i].projectionMatrix, m_AdditionalLightSlices[i].viewMatrix);
additionalLightHasSoftShadows |= shadowLight.light.shadows == LightShadows.Soft;
}
SetupAdditionalLightsShadowReceiverConstants(cmd, ref shadowData);
}
// We share soft shadow settings for main light and additional lights to save keywords.
// So we check here if pipeline supports soft shadows and either main light or any additional light has soft shadows
// to enable the keyword.
// TODO: In PC and Consoles we can upload shadow data per light and branch on shader. That will be more likely way faster.
bool mainLightHasSoftShadows = shadowData.supportsMainLightShadows &&
lightData.mainLightIndex != -1 &&
visibleLights[lightData.mainLightIndex].light.shadows == LightShadows.Soft;
bool softShadows = shadowData.supportsSoftShadows && (mainLightHasSoftShadows || additionalLightHasSoftShadows);
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.AdditionalLightShadows, true);
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.SoftShadows, softShadows);
context.ExecuteCommandBuffer(cmd);
CommandBufferPool.Release(cmd);
}
void RenderMainLightCascadeShadowmap(ref ScriptableRenderContext context, ref CullingResults cullResults, ref LightData lightData, ref ShadowData shadowData)
{
int shadowLightIndex = lightData.mainLightIndex;
if (shadowLightIndex == -1)
{
return;
}
VisibleLight shadowLight = lightData.visibleLights[shadowLightIndex];
CommandBuffer cmd = CommandBufferPool.Get(m_ProfilerTag);
cmd.SetGlobalDepthBias(shadowData.bias[shadowLightIndex].z, 0.0f);// shader do slope bias
using (new ProfilingSample(cmd, m_ProfilerTag))
{
var settings = new ShadowDrawingSettings(cullResults, shadowLightIndex);
for (int cascadeIndex = 0; cascadeIndex < m_ShadowCasterCascadesCount; ++cascadeIndex)
{
var splitData = settings.splitData;
splitData.cullingSphere = m_CascadeSplitDistances[cascadeIndex];
settings.splitData = splitData;
Vector4 shadowBias = ShadowUtils.GetShadowBias(ref shadowLight, shadowLightIndex, ref shadowData, m_CascadeSlices[cascadeIndex].projectionMatrix, m_CascadeSlices[cascadeIndex].resolution);
ShadowUtils.SetupShadowCasterConstantBuffer(cmd, ref shadowLight, shadowBias);
ShadowUtils.RenderShadowSlice(cmd, ref context, ref m_CascadeSlices[cascadeIndex],
ref settings, m_CascadeSlices[cascadeIndex].projectionMatrix, m_CascadeSlices[cascadeIndex].viewMatrix);
}
SetupMainLightShadowReceiverConstants(cmd, ref shadowData, shadowLight);
}
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.MainLightShadows, true);
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.MainLightShadowCascades, shadowData.mainLightShadowCascadesCount > 1);
CoreUtils.SetKeyword(cmd, ShaderKeywordStrings.SoftShadows, shadowLight.light.shadows == LightShadows.Soft && shadowData.supportsSoftShadows);
cmd.SetGlobalDepthBias(0, 0);
context.ExecuteCommandBuffer(cmd);
CommandBufferPool.Release(cmd);
}
