From a0c4815433ccd57322f4f7703ca35e9ccfa59250 Mon Sep 17 00:00:00 2001 From: marha Date: Thu, 8 Oct 2009 13:15:52 +0000 Subject: Added MesaLib-7.6 --- mesalib/src/mesa/main/colormac.h | 222 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 222 insertions(+) create mode 100644 mesalib/src/mesa/main/colormac.h (limited to 'mesalib/src/mesa/main/colormac.h') diff --git a/mesalib/src/mesa/main/colormac.h b/mesalib/src/mesa/main/colormac.h new file mode 100644 index 000000000..815624ee5 --- /dev/null +++ b/mesalib/src/mesa/main/colormac.h @@ -0,0 +1,222 @@ +/* + * Mesa 3-D graphics library + * Version: 7.3 + * + * 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"), + * 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 */ + +#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) + +#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) + +#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) + +#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( 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_5551( R, G, B, A ) \ + ((((R) & 0xf8) << 8) | (((G) & 0xf8) << 3) | (((B) & 0xf8) >> 2) | \ + ((A) ? 1 : 0)) + +#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 */ -- cgit v1.2.3