void SetupSpotShadow(ref ScriptableRenderContext context, ref CullingResults cullingResults, int shadowMapSize, int index, ref VisibleLight visibleLight)
{
Bounds shadowBounds;
if (visibleLight.light.shadows != LightShadows.None && cullingResults.GetShadowCasterBounds(index, out shadowBounds))
{
ShadowLight shadowLight = new ShadowLight();
shadowLight.cascades = new ShadowCascade[1];
shadowLight.cullingSpheres = null;
shadowLight.tileSize = shadowMapSize;
Matrix4x4 viewMatrix;
Matrix4x4 projectionMatrix;
ShadowSplitData splitData;
if (cullingResults.ComputeSpotShadowMatricesAndCullingPrimitives(index, out viewMatrix, out projectionMatrix, out splitData))
{
ShadowCascade shadowCascade = new ShadowCascade();
shadowCascade.viewMatrix = viewMatrix;
shadowCascade.projectionMatrix = projectionMatrix;
shadowCascade.worldToShadowMatrix = CreateWorldToShadowMatrix(viewMatrix, projectionMatrix);
shadowCascade.tileOffset = Vector2Int.zero;
shadowCascade.splitData = splitData;
shadowLight.cascades[0] = shadowCascade;
}
shadowData.lights[index] = shadowLight;
}
}
void RenderDebugOverlay(Camera camera, ScriptableRenderContext renderContext)
{
CommandBuffer debugCB = new CommandBuffer();
debugCB.name = "Debug Overlay";
float x = 0;
float overlayRatio = globalDebugParameters.debugOverlayRatio;
float overlaySize = Math.Min(camera.pixelHeight, camera.pixelWidth) * overlayRatio;
float y = camera.pixelHeight - overlaySize;
MaterialPropertyBlock propertyBlock = new MaterialPropertyBlock();
ShadowDebugParameters shadowDebug = globalDebugParameters.shadowDebugParameters;
if (shadowDebug.visualizationMode != ShadowDebugMode.None)
{
if (shadowDebug.visualizationMode == ShadowDebugMode.VisualizeShadowMap)
{
uint visualizeShadowIndex = Math.Min(shadowDebug.visualizeShadowMapIndex, (uint)(GetCurrentShadowCount() - 1));
ShadowLight shadowLight = m_ShadowsResult.shadowLights[visualizeShadowIndex];
for (int slice = 0; slice < shadowLight.shadowSliceCount; ++slice)
{
ShadowSliceData sliceData = m_ShadowsResult.shadowSlices[shadowLight.shadowSliceIndex + slice];
Vector4 texcoordScaleBias = new Vector4((float)sliceData.shadowResolution / m_Owner.shadowSettings.shadowAtlasWidth,
(float)sliceData.shadowResolution / m_Owner.shadowSettings.shadowAtlasHeight,
(float)sliceData.atlasX / m_Owner.shadowSettings.shadowAtlasWidth,
(float)sliceData.atlasY / m_Owner.shadowSettings.shadowAtlasHeight);
propertyBlock.SetVector("_TextureScaleBias", texcoordScaleBias);
debugCB.SetViewport(new Rect(x, y, overlaySize, overlaySize));
debugCB.DrawProcedural(Matrix4x4.identity, m_DebugDisplayShadowMap, 0, MeshTopology.Triangles, 6, 1, propertyBlock);
NextOverlayCoord(ref x, ref y, overlaySize, camera.pixelWidth);
}
}
else if (shadowDebug.visualizationMode == ShadowDebugMode.VisualizeAtlas)
{
propertyBlock.SetVector("_TextureScaleBias", new Vector4(1.0f, 1.0f, 0.0f, 0.0f));
debugCB.SetViewport(new Rect(x, y, overlaySize, overlaySize));
debugCB.DrawProcedural(Matrix4x4.identity, m_DebugDisplayShadowMap, 0, MeshTopology.Triangles, 6, 1, propertyBlock);
NextOverlayCoord(ref x, ref y, overlaySize, camera.pixelWidth);
}
}
renderContext.ExecuteCommandBuffer(debugCB);
}
void SetupDirectionalShadow(ref ScriptableRenderContext context, ref CullingResults cullingResults, int shadowMapSize, int index, ref VisibleLight visibleLight)
{
Bounds shadowBounds;
if (visibleLight.light.shadows != LightShadows.None && cullingResults.GetShadowCasterBounds(index, out shadowBounds))
{
ShadowLight shadowLight = new ShadowLight();
shadowLight.cascades = new ShadowCascade[4];
shadowLight.cullingSpheres = new Vector4[4];
shadowLight.tileSize = shadowMapSize / 2;
for (int j = 0; j < 4; j++)
{
Matrix4x4 viewMatrix;
Matrix4x4 projectionMatrix;
ShadowSplitData splitData;
if (cullingResults.ComputeDirectionalShadowMatricesAndCullingPrimitives(index, j, 4, fourCascadesSplit, shadowLight.tileSize, visibleLight.light.shadowNearPlane, out viewMatrix, out projectionMatrix, out splitData))
{
Vector2Int tileOffset = new Vector2Int(j % 2, j / 2);
Matrix4x4 tileMatrix = Matrix4x4.identity;
tileMatrix.m00 = tileMatrix.m11 = 0.5f;
tileMatrix.m03 = tileOffset.x * 0.5f;
tileMatrix.m13 = tileOffset.y * 0.5f;
ShadowCascade shadowCascade = new ShadowCascade();
shadowCascade.viewMatrix = viewMatrix;
shadowCascade.projectionMatrix = projectionMatrix;
shadowCascade.worldToShadowMatrix = tileMatrix * CreateWorldToShadowMatrix(viewMatrix, projectionMatrix);
shadowCascade.tileOffset = tileOffset;
shadowCascade.splitData = splitData;
shadowLight.cullingSpheres[j] = splitData.cullingSphere;
shadowLight.cullingSpheres[j].w *= shadowLight.cullingSpheres[j].w;
shadowLight.cascades[j] = shadowCascade;
}
}
shadowData.lights[index] = shadowLight;
}
}
