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51 lines
1.8 KiB
C
51 lines
1.8 KiB
C
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/*
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* Mesa 3-D graphics library
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* Version: 3.5
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*
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* Copyright (C) 1999-2001 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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* Transform function interface for assembly code. Simply define
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* FRAME_OFFSET to the number of bytes pushed onto the stack before
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* using the ARG_* argument macros.
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*
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* Gareth Hughes
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*/
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#ifndef __XFORM_ARGS_H__
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#define __XFORM_ARGS_H__
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/* Offsets for transform_func arguments
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*
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* typedef void (*transform_func)( GLvector4f *to_vec,
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* const GLfloat m[16],
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* const GLvector4f *from_vec );
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*/
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#define OFFSET_DEST 4
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#define OFFSET_MATRIX 8
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#define OFFSET_SOURCE 12
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#define ARG_DEST REGOFF(FRAME_OFFSET+OFFSET_DEST, ESP)
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#define ARG_MATRIX REGOFF(FRAME_OFFSET+OFFSET_MATRIX, ESP)
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#define ARG_SOURCE REGOFF(FRAME_OFFSET+OFFSET_SOURCE, ESP)
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#endif
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