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126 lines
3.7 KiB
C
126 lines
3.7 KiB
C
/*
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* Mesa 3-D graphics library
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* Version: 7.3
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*
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* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* \file colormac.h
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* Color-related macros
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*/
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#ifndef COLORMAC_H
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#define COLORMAC_H
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#include "config.h"
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#include "macros.h"
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#include "mtypes.h"
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/**
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* Convert four float values in [0,1] to ubytes in [0,255] with clamping.
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*/
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static inline void
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_mesa_unclamped_float_rgba_to_ubyte(GLubyte dst[4], const GLfloat src[4])
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{
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int i;
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for (i = 0; i < 4; i++)
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UNCLAMPED_FLOAT_TO_UBYTE(dst[i], src[i]);
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}
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/**
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* \name Generic color packing macros. All inputs should be GLubytes.
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*
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* \todo We may move these into texstore.h at some point.
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*/
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/*@{*/
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#define PACK_COLOR_8888( X, Y, Z, W ) \
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(((X) << 24) | ((Y) << 16) | ((Z) << 8) | (W))
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#define PACK_COLOR_8888_REV( X, Y, Z, W ) \
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(((W) << 24) | ((Z) << 16) | ((Y) << 8) | (X))
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#define PACK_COLOR_888( X, Y, Z ) \
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(((X) << 16) | ((Y) << 8) | (Z))
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#define PACK_COLOR_565( X, Y, Z ) \
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((((X) & 0xf8) << 8) | (((Y) & 0xfc) << 3) | (((Z) & 0xf8) >> 3))
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#define PACK_COLOR_565_REV( X, Y, Z ) \
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(((X) & 0xf8) | ((Y) & 0xe0) >> 5 | (((Y) & 0x1c) << 11) | (((Z) & 0xf8) << 5))
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#define PACK_COLOR_5551( R, G, B, A ) \
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((((R) & 0xf8) << 8) | (((G) & 0xf8) << 3) | (((B) & 0xf8) >> 2) | \
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((A) >> 7))
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#define PACK_COLOR_1555( A, B, G, R ) \
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((((B) & 0xf8) << 7) | (((G) & 0xf8) << 2) | (((R) & 0xf8) >> 3) | \
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(((A) & 0x80) << 8))
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#define PACK_COLOR_1555_REV( A, B, G, R ) \
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((((B) & 0xf8) >> 1) | (((G) & 0xc0) >> 6) | (((G) & 0x38) << 10) | (((R) & 0xf8) << 5) | \
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((A) ? 0x80 : 0))
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#define PACK_COLOR_2101010_UB( A, B, G, R ) \
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(((B) << 22) | ((G) << 12) | ((R) << 2) | \
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(((A) & 0xc0) << 24))
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#define PACK_COLOR_2101010_US( A, B, G, R ) \
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((((B) >> 6) << 20) | (((G) >> 6) << 10) | ((R) >> 6) | \
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(((A) >> 14) << 30))
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#define PACK_COLOR_4444( R, G, B, A ) \
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((((R) & 0xf0) << 8) | (((G) & 0xf0) << 4) | ((B) & 0xf0) | ((A) >> 4))
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#define PACK_COLOR_4444_REV( R, G, B, A ) \
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((((B) & 0xf0) << 8) | (((A) & 0xf0) << 4) | ((R) & 0xf0) | ((G) >> 4))
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#define PACK_COLOR_44( L, A ) \
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(((L) & 0xf0) | (((A) & 0xf0) >> 4))
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#define PACK_COLOR_88( L, A ) \
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(((L) << 8) | (A))
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#define PACK_COLOR_88_REV( L, A ) \
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(((A) << 8) | (L))
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#define PACK_COLOR_1616( L, A ) \
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(((L) << 16) | (A))
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#define PACK_COLOR_1616_REV( L, A ) \
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(((A) << 16) | (L))
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#define PACK_COLOR_332( R, G, B ) \
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(((R) & 0xe0) | (((G) & 0xe0) >> 3) | (((B) & 0xc0) >> 6))
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#define PACK_COLOR_233( B, G, R ) \
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(((B) & 0xc0) | (((G) & 0xe0) >> 2) | (((R) & 0xe0) >> 5))
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/*@}*/
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#endif /* COLORMAC_H */
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