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-rw-r--r--thirdparty/pvrtccompressor/PvrTcPacket.h65
1 files changed, 65 insertions, 0 deletions
diff --git a/thirdparty/pvrtccompressor/PvrTcPacket.h b/thirdparty/pvrtccompressor/PvrTcPacket.h
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+++ b/thirdparty/pvrtccompressor/PvrTcPacket.h
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+//============================================================================
+//
+// Modulation data specifies weightings of colorA to colorB for each pixel
+//
+// For mode = 0
+// 00: 0/8
+// 01: 3/8
+// 10: 5/8
+// 11: 8/8
+//
+// For mode = 1
+// 00: 0/8
+// 01: 4/8
+// 10: 4/8 with alpha punchthrough
+// 11: 8/8
+//
+// For colorIsOpaque=0
+// 3 bits A
+// 4 bits R
+// 4 bits G
+// 3/4 bits B
+//
+// For colorIsOpaque=1
+// 5 bits R
+// 5 bits G
+// 4/5 bits B
+//
+//============================================================================
+
+#pragma once
+#include "ColorRgba.h"
+
+//============================================================================
+
+namespace Javelin
+{
+//============================================================================
+
+ struct PvrTcPacket
+ {
+ unsigned int modulationData;
+ unsigned usePunchthroughAlpha : 1;
+ unsigned colorA : 14;
+ unsigned colorAIsOpaque : 1;
+ unsigned colorB : 15;
+ unsigned colorBIsOpaque : 1;
+
+ ColorRgb<int> GetColorRgbA() const;
+ ColorRgb<int> GetColorRgbB() const;
+ ColorRgba<int> GetColorRgbaA() const;
+ ColorRgba<int> GetColorRgbaB() const;
+
+ void SetColorA(const ColorRgb<unsigned char>& c);
+ void SetColorB(const ColorRgb<unsigned char>& c);
+
+ void SetColorA(const ColorRgba<unsigned char>& c);
+ void SetColorB(const ColorRgba<unsigned char>& c);
+
+ static const unsigned char BILINEAR_FACTORS[16][4];
+ static const unsigned char WEIGHTS[8][4];
+ };
+
+//============================================================================
+} // namespace Javelin
+//============================================================================