Merge pull request #8548 from tagcup/etc2comp

Add ETC1/ETC2 compression support though etc2comp.

1 files changed, 54 insertions, 0 deletions

diff --git a/thirdparty/etc2comp/EtcErrorMetric.h b/thirdparty/etc2comp/EtcErrorMetric.h
new file mode 100644
index 0000000000..df4dcab4fb
--- /dev/null
+++ b/thirdparty/etc2comp/EtcErrorMetric.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2015 The Etc2Comp Authors.
+ *
+ * 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.
+ */
+
+#pragma once
+
+namespace Etc
+{
+
+	enum ErrorMetric
+	{
+		RGBA,
+		RGBX,
+		REC709,
+		NUMERIC,
+		NORMALXYZ,
+		//
+		ERROR_METRICS,
+		//
+		BT709 = REC709
+	};
+
+	inline const char *ErrorMetricToString(ErrorMetric errorMetric)
+	{
+		switch (errorMetric)
+		{
+		case RGBA:
+			return "RGBA";
+		case RGBX:
+			return "RGBX";
+		case REC709:
+			return "REC709";
+		case NUMERIC:
+			return "NUMERIC";
+		case NORMALXYZ:
+			return "NORMALXYZ";
+		case ERROR_METRICS:
+		default:
+			return "UNKNOWN";
+		}
+	}
+} // namespace Etc