Cycles: Added Cryptomatte output.

This allows for extra output passes that encode automatic object and material masks
for the entire scene. It is an implementation of the Cryptomatte standard as
introduced by Psyop. A good future extension would be to add a manifest to the
export and to do plenty of testing to ensure that it is fully compatible with other
renderers and compositing programs that use Cryptomatte.

Internally, it adds the ability for Cycles to have several passes of the same type
that are distinguished by their name.

Differential Revision: https://developer.blender.org/D3538

1 files changed, 49 insertions, 0 deletions

diff --git a/intern/cycles/render/coverage.h b/intern/cycles/render/coverage.h
new file mode 100644
index 00000000000..16176ce4beb
--- /dev/null
+++ b/intern/cycles/render/coverage.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2018 Blender Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "render/buffers.h"
+#include "kernel/kernel_compat_cpu.h"
+#include "kernel/split/kernel_split_data.h"
+#include "kernel/kernel_globals.h"
+#include "util/util_map.h"
+#include "util/util_vector.h"
+
+#ifndef __COVERAGE_H__
+#define __COVERAGE_H__
+
+CCL_NAMESPACE_BEGIN
+
+class Coverage {
+public:
+	Coverage(KernelGlobals *kg_, RenderTile &tile_) : kg(kg_), tile(tile_) { }
+	void init_path_trace();
+	void init_pixel(int x, int y);
+	void finalize();
+private:
+	vector<CoverageMap>coverage_object;
+	vector<CoverageMap>coverage_material;
+	vector<CoverageMap>coverage_asset;
+	KernelGlobals *kg;
+	RenderTile &tile;
+	void finalize_buffer(vector<CoverageMap>&coverage, const int pass_offset);
+	void flatten_buffer(vector<CoverageMap>&coverage, const int pass_offset);
+	void sort_buffer(const int pass_offset);
+};
+
+
+CCL_NAMESPACE_END
+
+#endif /* __COVERAGE_H__ */