initial commit, 4.5 stable

thirdparty/cvtt/ConvectionKernels_ETC2.h

@@ -0,0 +1,35 @@
+#include <stdint.h>
+
+namespace cvtt
+{
+    namespace Tables
+    {
+        namespace ETC2
+        {
+            const int16_t g_thModifierTable[8] =
+            {
+                3, 6, 11, 16, 23, 32, 41, 64
+            };
+
+            const int16_t g_alphaModifierTablePositive[16][4] =
+            {
+                { 2, 5, 8, 14, },
+                { 2, 6, 9, 12, },
+                { 1, 4, 7, 12, },
+                { 1, 3, 5, 12, },
+                { 2, 5, 7, 11, },
+                { 2, 6, 8, 10, },
+                { 3, 6, 7, 10, },
+                { 2, 4, 7, 10, },
+                { 1, 5, 7, 9, },
+                { 1, 4, 7, 9, },
+                { 1, 3, 7, 9, },
+                { 1, 4, 6, 9, },
+                { 2, 3, 6, 9, },
+                { 0, 1, 2, 9, },
+                { 3, 5, 7, 8, },
+                { 2, 4, 6, 8, },
+            };
+        }
+    }
+}