-/* $Id: macros.h,v 1.10 2000/10/28 18:34:48 brianp Exp $ */
+/* $Id: macros.h,v 1.25 2002/02/13 00:53:19 keithw Exp $ */
/*
* Mesa 3-D graphics library
- * Version: 3.3
- *
- * Copyright (C) 1999 Brian Paul All Rights Reserved.
- *
+ * Version: 3.5
+ *
+ * Copyright (C) 1999-2001 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
#include "glheader.h"
-
-
-#ifdef DEBUG
-# define ASSERT(X) assert(X)
-#else
-# define ASSERT(X)
-#endif
-
-
-#if defined(__GNUC__)
-#define INLINE __inline__
-#elif defined(__MSC__)
-#define INLINE __inline
-#else
-#define INLINE
-#endif
+/* Do not reference mtypes.h from this file.
+ */
/* Limits: */
#define MAX_GLUINT 0xffffffff
-/* Some compilers don't like some of Mesa's const usage */
-#ifdef NO_CONST
-# define CONST
-#else
-# define CONST const
-#endif
-
-
/* Pi */
#ifndef M_PI
#define M_PI (3.1415926)
#define TEST_BITS(WORD, BITS) ((WORD) & (BITS))
-/* Stepping a GLfloat pointer by a byte stride
+/* Stepping a GLfloat pointer by a byte stride
*/
#define STRIDE_F(p, i) (p = (GLfloat *)((GLubyte *)p + i))
#define STRIDE_UI(p, i) (p = (GLuint *)((GLubyte *)p + i))
-#define STRIDE_T(p, t, i) (p = (t *)((GLubyte *)p + i))
+#define STRIDE_4UB(p, i) (p = (GLubyte (*)[4])((GLubyte *)p + i))
+#define STRIDE_4CHAN(p, i) (p = (GLchan (*)[4])((GLubyte *)p + i))
+#define STRIDE_CHAN(p, i) (p = (GLchan *)((GLubyte *)p + i))
+#define STRIDE_T(p, t, i) (p = (t)((GLubyte *)p + i))
#define ZERO_2V( DST ) (DST)[0] = (DST)[1] = 0
#define ZERO_4V( DST ) (DST)[0] = (DST)[1] = (DST)[2] = (DST)[3] = 0
+#define TEST_EQ_4V(a,b) ((a)[0] == (b)[0] && \
+ (a)[1] == (b)[1] && \
+ (a)[2] == (b)[2] && \
+ (a)[3] == (b)[3])
+
+#define TEST_EQ_3V(a,b) ((a)[0] == (b)[0] && \
+ (a)[1] == (b)[1] && \
+ (a)[2] == (b)[2])
+
+#if defined(__i386__)
+#define TEST_EQ_4UBV(DST, SRC) *((GLuint*)(DST)) == *((GLuint*)(SRC))
+#else
+#define TEST_EQ_4UBV(DST, SRC) TEST_EQ_4V(DST, SRC)
+#endif
+
+
+
/* Copy short vectors: */
#define COPY_2V( DST, SRC ) \
do { \
(DST)[3] = (SRC)[3]; \
} while (0)
+#if defined(__i386__)
+#define COPY_4UBV(DST, SRC) \
+do { \
+ *((GLuint*)(DST)) = *((GLuint*)(SRC)); \
+} while (0)
+#else
+/* The GLuint cast might fail if DST or SRC are not dword-aligned (RISC) */
+#define COPY_4UBV(DST, SRC) \
+do { \
+ (DST)[0] = (SRC)[0]; \
+ (DST)[1] = (SRC)[1]; \
+ (DST)[2] = (SRC)[2]; \
+ (DST)[3] = (SRC)[3]; \
+} while (0)
+#endif
#define COPY_2FV( DST, SRC ) \
do { \
case 2: (DST)[1] = (SRC)[1]; \
case 1: (DST)[0] = (SRC)[0]; \
} \
-} while(0)
+} while(0)
+
+#define COPY_CLEAN_4V(DST, SZ, SRC) \
+do { \
+ ASSIGN_4V( DST, 0, 0, 0, 1 ); \
+ COPY_SZ_4V( DST, SZ, SRC ); \
+} while (0)
#define SUB_4V( DST, SRCA, SRCB ) \
do { \
(DST)[2] = (SRCA)[2] * (SRCB)[2]; \
} while (0)
+#define SELF_SCALE_3V( DST, SRC ) \
+do { \
+ (DST)[0] *= (SRC)[0]; \
+ (DST)[1] *= (SRC)[1]; \
+ (DST)[2] *= (SRC)[2]; \
+} while (0)
+
#define ACC_3V( DST, SRC ) \
do { \
(DST)[0] += (SRC)[0]; \
-/*
- * Copy a vector of 4 GLubytes from SRC to DST.
- */
-#define COPY_4UBV(DST, SRC) \
-do { \
- if (sizeof(GLuint)==4*sizeof(GLubyte)) { \
- *((GLuint*)(DST)) = *((GLuint*)(SRC)); \
- } \
- else { \
- (DST)[0] = (SRC)[0]; \
- (DST)[1] = (SRC)[1]; \
- (DST)[2] = (SRC)[2]; \
- (DST)[3] = (SRC)[3]; \
- } \
-} while (0)
-
-
-#define COPY_CHAN4(DST, SRC) COPY_4UBV(DST, SRC)
-
-
/* Assign scalers to short vectors: */
#define ASSIGN_2V( V, V0, V1 ) \
do { \
#define DOT4( a, b ) ( (a)[0]*(b)[0] + (a)[1]*(b)[1] + \
(a)[2]*(b)[2] + (a)[3]*(b)[3] )
-#define DOT4V(v,a,b,c,d) (v[0]*a + v[1]*b + v[2]*c + v[3]*d)
+#define DOT4V(v,a,b,c,d) (v[0]*(a) + v[1]*(b) + v[2]*(c) + v[3]*(d))
#define CROSS3(n, u, v) \
} while (0)
-/*
- * Integer / float conversion for colors, normals, etc.
- */
-
-#define BYTE_TO_UBYTE(b) (b < 0 ? 0 : (GLubyte) b)
-#define SHORT_TO_UBYTE(s) (s < 0 ? 0 : (GLubyte) (s >> 7))
-#define USHORT_TO_UBYTE(s) (GLubyte) (s >> 8)
-#define INT_TO_UBYTE(i) (i < 0 ? 0 : (GLubyte) (i >> 23))
-#define UINT_TO_UBYTE(i) (GLubyte) (i >> 24)
-
-/* Convert GLubyte in [0,255] to GLfloat in [0.0,1.0] */
-#define UBYTE_TO_FLOAT(B) ((GLfloat) (B) * (1.0F / 255.0F))
-
-/* Convert GLfloat in [0.0,1.0] to GLubyte in [0,255] */
-#define FLOAT_TO_UBYTE(X) ((GLubyte) (GLint) (((X)) * 255.0F))
-
-
-/* Convert GLbyte in [-128,127] to GLfloat in [-1.0,1.0] */
-#define BYTE_TO_FLOAT(B) ((2.0F * (B) + 1.0F) * (1.0F/255.0F))
-/* Convert GLfloat in [-1.0,1.0] to GLbyte in [-128,127] */
-#define FLOAT_TO_BYTE(X) ( (((GLint) (255.0F * (X))) - 1) / 2 )
-
-
-/* Convert GLushort in [0,65536] to GLfloat in [0.0,1.0] */
-#define USHORT_TO_FLOAT(S) ((GLfloat) (S) * (1.0F / 65535.0F))
-
-/* Convert GLfloat in [0.0,1.0] to GLushort in [0,65536] */
-#define FLOAT_TO_USHORT(X) ((GLushort) (GLint) ((X) * 65535.0F))
-
-
-/* Convert GLshort in [-32768,32767] to GLfloat in [-1.0,1.0] */
-#define SHORT_TO_FLOAT(S) ((2.0F * (S) + 1.0F) * (1.0F/65535.0F))
-
-/* Convert GLfloat in [0.0,1.0] to GLshort in [-32768,32767] */
-#define FLOAT_TO_SHORT(X) ( (((GLint) (65535.0F * (X))) - 1) / 2 )
+/* Generic color packing macros
+ */
+#define PACK_COLOR_8888( a, b, c, d ) \
+ (((a) << 24) | ((b) << 16) | ((c) << 8) | (d))
-/* Convert GLuint in [0,4294967295] to GLfloat in [0.0,1.0] */
-#define UINT_TO_FLOAT(U) ((GLfloat) (U) * (1.0F / 4294967295.0F))
+#define PACK_COLOR_888( a, b, c ) \
+ (((a) << 16) | ((b) << 8) | (c))
-/* Convert GLfloat in [0.0,1.0] to GLuint in [0,4294967295] */
-#define FLOAT_TO_UINT(X) ((GLuint) ((X) * 4294967295.0))
+#define PACK_COLOR_565( a, b, c ) \
+ ((((a) & 0xf8) << 8) | (((b) & 0xfc) << 3) | (((c) & 0xf8) >> 3))
+#define PACK_COLOR_1555( a, b, c, d ) \
+ ((((b) & 0xf8) << 7) | (((c) & 0xf8) << 2) | (((d) & 0xf8) >> 3) | \
+ ((a) ? 0x8000 : 0))
-/* Convert GLint in [-2147483648,2147483647] to GLfloat in [-1.0,1.0] */
-#define INT_TO_FLOAT(I) ((2.0F * (I) + 1.0F) * (1.0F/4294967294.0F))
+#define PACK_COLOR_4444( a, b, c, d ) \
+ ((((a) & 0xf0) << 8) | (((b) & 0xf0) << 4) | ((c) & 0xf0) | ((d) >> 4))
-/* Convert GLfloat in [-1.0,1.0] to GLint in [-2147483648,2147483647] */
-/* causes overflow:
-#define FLOAT_TO_INT(X) ( (((GLint) (4294967294.0F * (X))) - 1) / 2 )
-*/
-/* a close approximation: */
-#define FLOAT_TO_INT(X) ( (GLint) (2147483647.0 * (X)) )
+#define PACK_COLOR_88( a, b ) \
+ (((a) << 8) | (b))
+#define PACK_COLOR_332( a, b, c ) \
+ (((a) & 0xe0) | (((b) & 0xe0) >> 3) | (((c) & 0xc0) >> 6))
-/* XXX chan fix me */
-#define CHAN_TO_FLOAT(C) ( (GLfloat) ((C) * (1.0 / CHAN_MAXF)) )
#endif
projects / mesa.git / blobdiff