public static void ApplySliceTransform(ref ShadowSliceData shadowSliceData, int atlasWidth, int atlasHeight)
{
Matrix4x4 sliceTransform = Matrix4x4.identity;
float oneOverAtlasWidth = 1.0f / atlasWidth;
float oneOverAtlasHeight = 1.0f / atlasHeight;
sliceTransform.m00 = shadowSliceData.resolution * oneOverAtlasWidth;
sliceTransform.m11 = shadowSliceData.resolution * oneOverAtlasHeight;
sliceTransform.m03 = shadowSliceData.offsetX * oneOverAtlasWidth;
sliceTransform.m13 = shadowSliceData.offsetY * oneOverAtlasHeight;
// Apply shadow slice scale and offset
shadowSliceData.shadowTransform = sliceTransform * shadowSliceData.shadowTransform;
}
public static void RenderShadowSlice(CommandBuffer cmd, ref ScriptableRenderContext context,
ref ShadowSliceData shadowSliceData, ref DrawShadowsSettings settings,
Matrix4x4 proj, Matrix4x4 view)
{
cmd.SetViewport(new Rect(shadowSliceData.offsetX, shadowSliceData.offsetY, shadowSliceData.resolution, shadowSliceData.resolution));
cmd.EnableScissorRect(new Rect(shadowSliceData.offsetX + 4, shadowSliceData.offsetY + 4, shadowSliceData.resolution - 8, shadowSliceData.resolution - 8));
cmd.SetViewProjectionMatrices(view, proj);
context.ExecuteCommandBuffer(cmd);
cmd.Clear();
context.DrawShadows(ref settings);
cmd.DisableScissorRect();
context.ExecuteCommandBuffer(cmd);
cmd.Clear();
}