-/* $Id: macros.h,v 1.15 2000/11/24 10:25:05 keithw Exp $ */
+/* $Id: macros.h,v 1.25 2002/02/13 00:53:19 keithw Exp $ */
/*
* Mesa 3-D graphics library
* Version: 3.5
- *
- * Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
- *
+ *
+ * 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
#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 { \
- 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]; \
- } \
+ *((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 { \
(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]; \
} while (0)
+
+/* Generic color packing macros
+ */
+
+#define PACK_COLOR_8888( a, b, c, d ) \
+ (((a) << 24) | ((b) << 16) | ((c) << 8) | (d))
+
+#define PACK_COLOR_888( a, b, c ) \
+ (((a) << 16) | ((b) << 8) | (c))
+
+#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))
+
+#define PACK_COLOR_4444( a, b, c, d ) \
+ ((((a) & 0xf0) << 8) | (((b) & 0xf0) << 4) | ((c) & 0xf0) | ((d) >> 4))
+
+#define PACK_COLOR_88( a, b ) \
+ (((a) << 8) | (b))
+
+#define PACK_COLOR_332( a, b, c ) \
+ (((a) & 0xe0) | (((b) & 0xe0) >> 3) | (((c) & 0xc0) >> 6))
+
+
#endif
projects / mesa.git / blobdiff