src/parsec/disk-image/parsec/parsec-benchmark/pkgs/libs/mesa/src/src/mesa/main/colormac.h - public/gem5-resources - Git at Google

 /*
  * Mesa 3-D graphics library
  * Version:  6.1
  *
  * Copyright (C) 1999-2004  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"),
  * to deal in the Software without restriction, including without limitation
  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  * and/or sell copies of the Software, and to permit persons to whom the
  * Software is furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be included
  * in all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */


 /**
  * \file colormac.h
  * Color-related macros
  */


 #ifndef COLORMAC_H
 #define COLORMAC_H


 #include "imports.h"
 #include "config.h"
 #include "macros.h"


 /** \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 UBYTE_TO_CHAN(b)  (b)
 #define SHORT_TO_CHAN(s)  ((s) < 0 ? 0 : (GLchan) ((s) >> 7))
 #define USHORT_TO_CHAN(s) ((GLchan) ((s) >> 8))
 #define INT_TO_CHAN(i)    ((i) < 0 ? 0 : (GLchan) ((i) >> 23))
 #define UINT_TO_CHAN(i)   ((GLchan) ((i) >> 24))

 #define CHAN_TO_UBYTE(c)  (c)
 #define CHAN_TO_FLOAT(c)  UBYTE_TO_FLOAT(c)

 #define CLAMPED_FLOAT_TO_CHAN(c, f)    CLAMPED_FLOAT_TO_UBYTE(c, f)
 #define UNCLAMPED_FLOAT_TO_CHAN(c, f)  UNCLAMPED_FLOAT_TO_UBYTE(c, f)

 #define COPY_CHAN4(DST, SRC)  COPY_4UBV(DST, SRC)

 #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 UBYTE_TO_CHAN(b)  ((((GLchan) (b)) << 8) | ((GLchan) (b)))
 #define SHORT_TO_CHAN(s)  ((s) < 0 ? 0 : (GLchan) (s))
 #define USHORT_TO_CHAN(s) (s)
 #define INT_TO_CHAN(i)    ((i) < 0 ? 0 : (GLchan) ((i) >> 15))
 #define UINT_TO_CHAN(i)   ((GLchan) ((i) >> 16))

 #define CHAN_TO_UBYTE(c)  ((c) >> 8)
 #define CHAN_TO_FLOAT(c)  ((GLfloat) ((c) * (1.0 / CHAN_MAXF)))

 #define CLAMPED_FLOAT_TO_CHAN(c, f)    CLAMPED_FLOAT_TO_USHORT(c, f)
 #define UNCLAMPED_FLOAT_TO_CHAN(c, f)  UNCLAMPED_FLOAT_TO_USHORT(c, f)

 #define COPY_CHAN4(DST, SRC)  COPY_4V(DST, SRC)

 #define CHAN_PRODUCT(a, b) ((GLchan) ((((GLuint) (a)) * ((GLuint) (b))) / 65535))

 #elif CHAN_BITS == 32

 /* XXX floating-point color channels not fully thought-out */
 #define BYTE_TO_CHAN(b)   ((GLfloat) ((b) * (1.0F / 127.0F)))
 #define UBYTE_TO_CHAN(b)  ((GLfloat) ((b) * (1.0F / 255.0F)))
 #define SHORT_TO_CHAN(s)  ((GLfloat) ((s) * (1.0F / 32767.0F)))
 #define USHORT_TO_CHAN(s) ((GLfloat) ((s) * (1.0F / 65535.0F)))
 #define INT_TO_CHAN(i)    ((GLfloat) ((i) * (1.0F / 2147483647.0F)))
 #define UINT_TO_CHAN(i)   ((GLfloat) ((i) * (1.0F / 4294967295.0F)))

 #define CHAN_TO_UBYTE(c)  FLOAT_TO_UBYTE(c)
 #define CHAN_TO_FLOAT(c)  (c)

 #define CLAMPED_FLOAT_TO_CHAN(c, f)  c = (f)
 #define UNCLAMPED_FLOAT_TO_CHAN(c, f)      c = (f)

 #define COPY_CHAN4(DST, SRC)  COPY_4V(DST, SRC)

 #define CHAN_PRODUCT(a, b)    ((a) * (b))

 #else

 #error unexpected CHAN_BITS size

 #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 {						\
    UNCLAMPED_FLOAT_TO_CHAN(dst[0], f[0]);	\
    UNCLAMPED_FLOAT_TO_CHAN(dst[1], f[1]);	\
    UNCLAMPED_FLOAT_TO_CHAN(dst[2], f[2]);	\
 } 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 {						\
    UNCLAMPED_FLOAT_TO_CHAN(dst[0], f[0]);	\
    UNCLAMPED_FLOAT_TO_CHAN(dst[1], f[1]);	\
    UNCLAMPED_FLOAT_TO_CHAN(dst[2], f[2]);	\
    UNCLAMPED_FLOAT_TO_CHAN(dst[3], f[3]);	\
 } 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( R, G, B, A )					\
    (((R) << 24) | ((G) << 16) | ((B) << 8) | (A))

 #define PACK_COLOR_8888_REV( R, G, B, A )				\
    (((A) << 24) | ((B) << 16) | ((G) << 8) | (R))

 #define PACK_COLOR_888( R, G, B )					\
    (((R) << 16) | ((G) << 8) | (B))

 #define PACK_COLOR_565( R, G, B )					\
    ((((R) & 0xf8) << 8) | (((G) & 0xfc) << 3) | (((B) & 0xf8) >> 3))

 #define PACK_COLOR_565_REV( R, G, B )					\
    (((R) & 0xf8) | ((G) & 0xe0) >> 5 | (((G) & 0x1c) << 11) | (((B) & 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 */
	/*
	* Mesa 3-D graphics library
	* Version: 6.1
	*
	* Copyright (C) 1999-2004 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"),
	* to deal in the Software without restriction, including without limitation
	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	* and/or sell copies of the Software, and to permit persons to whom the
	* Software is furnished to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice shall be included
	* in all copies or substantial portions of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
	* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
	* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	*/


	/**
	* \file colormac.h
	* Color-related macros
	*/


	#ifndef COLORMAC_H
	#define COLORMAC_H


	#include "imports.h"
	#include "config.h"
	#include "macros.h"


	/** \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 UBYTE_TO_CHAN(b) (b)
	#define SHORT_TO_CHAN(s) ((s) < 0 ? 0 : (GLchan) ((s) >> 7))
	#define USHORT_TO_CHAN(s) ((GLchan) ((s) >> 8))
	#define INT_TO_CHAN(i) ((i) < 0 ? 0 : (GLchan) ((i) >> 23))
	#define UINT_TO_CHAN(i) ((GLchan) ((i) >> 24))

	#define CHAN_TO_UBYTE(c) (c)
	#define CHAN_TO_FLOAT(c) UBYTE_TO_FLOAT(c)

	#define CLAMPED_FLOAT_TO_CHAN(c, f) CLAMPED_FLOAT_TO_UBYTE(c, f)
	#define UNCLAMPED_FLOAT_TO_CHAN(c, f) UNCLAMPED_FLOAT_TO_UBYTE(c, f)

	#define COPY_CHAN4(DST, SRC) COPY_4UBV(DST, SRC)

	#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 UBYTE_TO_CHAN(b) ((((GLchan) (b)) << 8) \| ((GLchan) (b)))
	#define SHORT_TO_CHAN(s) ((s) < 0 ? 0 : (GLchan) (s))
	#define USHORT_TO_CHAN(s) (s)
	#define INT_TO_CHAN(i) ((i) < 0 ? 0 : (GLchan) ((i) >> 15))
	#define UINT_TO_CHAN(i) ((GLchan) ((i) >> 16))

	#define CHAN_TO_UBYTE(c) ((c) >> 8)
	#define CHAN_TO_FLOAT(c) ((GLfloat) ((c) * (1.0 / CHAN_MAXF)))

	#define CLAMPED_FLOAT_TO_CHAN(c, f) CLAMPED_FLOAT_TO_USHORT(c, f)
	#define UNCLAMPED_FLOAT_TO_CHAN(c, f) UNCLAMPED_FLOAT_TO_USHORT(c, f)

	#define COPY_CHAN4(DST, SRC) COPY_4V(DST, SRC)

	#define CHAN_PRODUCT(a, b) ((GLchan) ((((GLuint) (a)) * ((GLuint) (b))) / 65535))

	#elif CHAN_BITS == 32

	/* XXX floating-point color channels not fully thought-out */
	#define BYTE_TO_CHAN(b) ((GLfloat) ((b) * (1.0F / 127.0F)))
	#define UBYTE_TO_CHAN(b) ((GLfloat) ((b) * (1.0F / 255.0F)))
	#define SHORT_TO_CHAN(s) ((GLfloat) ((s) * (1.0F / 32767.0F)))
	#define USHORT_TO_CHAN(s) ((GLfloat) ((s) * (1.0F / 65535.0F)))
	#define INT_TO_CHAN(i) ((GLfloat) ((i) * (1.0F / 2147483647.0F)))
	#define UINT_TO_CHAN(i) ((GLfloat) ((i) * (1.0F / 4294967295.0F)))

	#define CHAN_TO_UBYTE(c) FLOAT_TO_UBYTE(c)
	#define CHAN_TO_FLOAT(c) (c)

	#define CLAMPED_FLOAT_TO_CHAN(c, f) c = (f)
	#define UNCLAMPED_FLOAT_TO_CHAN(c, f) c = (f)

	#define COPY_CHAN4(DST, SRC) COPY_4V(DST, SRC)

	#define CHAN_PRODUCT(a, b) ((a) * (b))

	#else

	#error unexpected CHAN_BITS size

	#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 { \
	UNCLAMPED_FLOAT_TO_CHAN(dst[0], f[0]); \
	UNCLAMPED_FLOAT_TO_CHAN(dst[1], f[1]); \
	UNCLAMPED_FLOAT_TO_CHAN(dst[2], f[2]); \
	} 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 { \
	UNCLAMPED_FLOAT_TO_CHAN(dst[0], f[0]); \
	UNCLAMPED_FLOAT_TO_CHAN(dst[1], f[1]); \
	UNCLAMPED_FLOAT_TO_CHAN(dst[2], f[2]); \
	UNCLAMPED_FLOAT_TO_CHAN(dst[3], f[3]); \
	} 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( R, G, B, A ) \
	(((R) << 24) \| ((G) << 16) \| ((B) << 8) \| (A))

	#define PACK_COLOR_8888_REV( R, G, B, A ) \
	(((A) << 24) \| ((B) << 16) \| ((G) << 8) \| (R))

	#define PACK_COLOR_888( R, G, B ) \
	(((R) << 16) \| ((G) << 8) \| (B))

	#define PACK_COLOR_565( R, G, B ) \
	((((R) & 0xf8) << 8) \| (((G) & 0xfc) << 3) \| (((B) & 0xf8) >> 3))

	#define PACK_COLOR_565_REV( R, G, B ) \
	(((R) & 0xf8) \| ((G) & 0xe0) >> 5 \| (((G) & 0x1c) << 11) \| (((B) & 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 */