-/* $Id: colormac.h,v 1.11 2002/04/04 16:51:52 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 4.1
+ * Version: 7.3
*
- * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
*/
-
-/*
+/**
+ * \file colormac.h
* Color-related macros
*/
+
#ifndef COLORMAC_H
#define COLORMAC_H
-#include "glheader.h"
+#include "imports.h"
#include "config.h"
#include "macros.h"
-#include "mmath.h"
-/* Do not reference mtypes.h from this file.
- */
+/** \def BYTE_TO_CHAN
+ * Convert from GLbyte to GLchan */
+
+/** \def UBYTE_TO_CHAN
+ * Convert from GLubyte to GLchan */
+
+/** \def SHORT_TO_CHAN
+ * Convert from GLshort to GLchan */
+
+/** \def USHORT_TO_CHAN
+ * Convert from GLushort to GLchan */
+
+/** \def INT_TO_CHAN
+ * Convert from GLint to GLchan */
+
+/** \def UINT_TO_CHAN
+ * Convert from GLuint to GLchan */
+
+/** \def CHAN_TO_UBYTE
+ * Convert from GLchan to GLubyte */
+
+/** \def CHAN_TO_FLOAT
+ * Convert from GLchan to GLfloat */
+
+/** \def CLAMPED_FLOAT_TO_CHAN
+ * Convert from GLclampf to GLchan */
+
+/** \def UNCLAMPED_FLOAT_TO_CHAN
+ * Convert from GLfloat to GLchan */
+
+/** \def COPY_CHAN4
+ * Copy a GLchan[4] array */
+
+/** \def CHAN_PRODUCT
+ * Scaled product (usually approximated) between two GLchan arguments */
+
#if CHAN_BITS == 8
#define BYTE_TO_CHAN(b) ((b) < 0 ? 0 : (GLchan) (b))
#define CHAN_PRODUCT(a, b) ((GLubyte) (((GLint)(a) * ((GLint)(b) + 1)) >> 8))
-
#elif CHAN_BITS == 16
#define BYTE_TO_CHAN(b) ((b) < 0 ? 0 : (((GLchan) (b)) * 516))
#define CHAN_PRODUCT(a, b) ((GLchan) ((((GLuint) (a)) * ((GLuint) (b))) / 65535))
-
#elif CHAN_BITS == 32
/* XXX floating-point color channels not fully thought-out */
#endif
-
-/*
+/**
* Convert 3 channels at once.
+ *
+ * \param dst pointer to destination GLchan[3] array.
+ * \param f pointer to source GLfloat[3] array.
+ *
+ * \sa #UNCLAMPED_FLOAT_TO_CHAN.
*/
#define UNCLAMPED_FLOAT_TO_RGB_CHAN(dst, f) \
do { \
} while (0)
-/*
+/**
* Convert 4 channels at once.
+ *
+ * \param dst pointer to destination GLchan[4] array.
+ * \param f pointer to source GLfloat[4] array.
+ *
+ * \sa #UNCLAMPED_FLOAT_TO_CHAN.
*/
#define UNCLAMPED_FLOAT_TO_RGBA_CHAN(dst, f) \
do { \
} while (0)
+
+/**
+ * \name Generic color packing macros. All inputs should be GLubytes.
+ *
+ * \todo We may move these into texstore.h at some point.
+ */
+/*@{*/
+
+#define PACK_COLOR_8888( X, Y, Z, W ) \
+ (((X) << 24) | ((Y) << 16) | ((Z) << 8) | (W))
+
+#define PACK_COLOR_8888_REV( X, Y, Z, W ) \
+ (((W) << 24) | ((Z) << 16) | ((Y) << 8) | (X))
+
+#define PACK_COLOR_888( X, Y, Z ) \
+ (((X) << 16) | ((Y) << 8) | (Z))
+
+#define PACK_COLOR_565( X, Y, Z ) \
+ ((((X) & 0xf8) << 8) | (((Y) & 0xfc) << 3) | (((Z) & 0xf8) >> 3))
+
+#define PACK_COLOR_565_REV( X, Y, Z ) \
+ (((X) & 0xf8) | ((Y) & 0xe0) >> 5 | (((Y) & 0x1c) << 11) | (((Z) & 0xf8) << 5))
+
+#define PACK_COLOR_1555( A, B, G, R ) \
+ ((((B) & 0xf8) << 7) | (((G) & 0xf8) << 2) | (((R) & 0xf8) >> 3) | \
+ ((A) ? 0x8000 : 0))
+
+#define PACK_COLOR_1555_REV( A, B, G, R ) \
+ ((((B) & 0xf8) >> 1) | (((G) & 0xc0) >> 6) | (((G) & 0x38) << 10) | (((R) & 0xf8) << 5) | \
+ ((A) ? 0x80 : 0))
+
+#define PACK_COLOR_4444( R, G, B, A ) \
+ ((((R) & 0xf0) << 8) | (((G) & 0xf0) << 4) | ((B) & 0xf0) | ((A) >> 4))
+
+#define PACK_COLOR_4444_REV( R, G, B, A ) \
+ ((((B) & 0xf0) << 8) | (((A) & 0xf0) << 4) | ((R) & 0xf0) | ((G) >> 4))
+
+#define PACK_COLOR_88( L, A ) \
+ (((L) << 8) | (A))
+
+#define PACK_COLOR_88_REV( L, A ) \
+ (((A) << 8) | (L))
+
+#define PACK_COLOR_332( R, G, B ) \
+ (((R) & 0xe0) | (((G) & 0xe0) >> 3) | (((B) & 0xc0) >> 6))
+
+#define PACK_COLOR_233( B, G, R ) \
+ (((B) & 0xc0) | (((G) & 0xe0) >> 2) | (((R) & 0xe0) >> 5))
+
+/*@}*/
+
+
#endif /* COLORMAC_H */
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