mirror of
https://github.com/reactos/reactos.git
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5f2bebf7a5
With this commit, we now use a forked version of MESA which only supports OpenGL 1.1, like the windows implementation does. It exposes : - The same pixel formats - The same set of extensions - Nothing more All of this without taking 10% of your build time. If you need a more modern option, look at the MESA package from Rapps, which is (and must be) maintained outside of this code tree. CORE-7499
159 lines
4.6 KiB
C
159 lines
4.6 KiB
C
/* $Id: vb.h,v 1.12 1997/08/13 02:07:17 brianp Exp $ */
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/*
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* Mesa 3-D graphics library
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* Version: 2.4
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* Copyright (C) 1995-1997 Brian Paul
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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* $Log: vb.h,v $
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* Revision 1.12 1997/08/13 02:07:17 brianp
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* set VB_MAX to 72 is using Glide for better performance (David Bucciarelli)
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*
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* Revision 1.11 1997/06/21 21:30:59 brianp
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* updated many comments
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*
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* Revision 1.10 1997/06/20 02:08:23 brianp
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* changed color components from GLfixed to GLubyte
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*
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* Revision 1.9 1997/05/09 22:41:55 brianp
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* replaced gl_init_vb() with gl_alloc_vb()
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*
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* Revision 1.8 1997/04/24 00:29:36 brianp
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* added TexCoordSize
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*
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* Revision 1.7 1997/04/20 15:59:30 brianp
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* removed VERTEX2_BIT stuff
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*
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* Revision 1.6 1997/04/12 16:21:35 brianp
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* added CLIP_* flags and gl_init_vb()
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*
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* Revision 1.5 1997/04/07 02:59:59 brianp
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* added VertexSizeMask
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*
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* Revision 1.4 1997/04/02 03:13:12 brianp
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* removed Unclipped[], added ClipMask[], ClipOrMask, ClipAndMask
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*
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* Revision 1.3 1996/12/18 19:59:44 brianp
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* removed the material bitmask constants
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*
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* Revision 1.2 1996/09/27 01:31:17 brianp
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* added gl_init_vb() prototype
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*
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* Revision 1.1 1996/09/13 01:38:16 brianp
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* Initial revision
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*
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*/
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/*
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* OVERVIEW: The vertices defined between glBegin() and glEnd()
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* are accumulated in the vertex buffer. When either the
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* vertex buffer becomes filled or glEnd() is called, we must flush
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* the buffer. That is, we apply the vertex transformations, compute
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* lighting, fog, texture coordinates etc. Then, we can render the
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* vertices as points, lines or polygons by calling the gl_render_vb()
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* function in render.c
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*
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*/
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#ifndef VB_H
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#define VB_H
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#include "types.h"
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/* Flush VB when this number of vertices is accumulated: (a multiple of 12) */
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#define VB_MAX 480
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/* Arrays must also accomodate new vertices from clipping: */
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#define VB_SIZE (VB_MAX + 2 * (6 + MAX_CLIP_PLANES))
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/* Bit values for VertexSizeMask, below. */
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/*#define VERTEX2_BIT 1*/
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#define VERTEX3_BIT 2
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#define VERTEX4_BIT 4
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struct vertex_buffer {
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GLfloat Obj[VB_SIZE][4]; /* Object coords */
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GLfloat Eye[VB_SIZE][4]; /* Eye coords */
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GLfloat Clip[VB_SIZE][4]; /* Clip coords */
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GLfloat Win[VB_SIZE][3]; /* Window coords */
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GLfloat Normal[VB_SIZE][3]; /* Normal vectors */
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GLubyte Fcolor[VB_SIZE][4]; /* Front colors (RGBA) */
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GLubyte Bcolor[VB_SIZE][4]; /* Back colors (RGBA) */
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GLubyte (*Color)[4]; /* == Fcolor or Bcolor */
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GLuint Findex[VB_SIZE]; /* Front color indexes */
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GLuint Bindex[VB_SIZE]; /* Back color indexes */
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GLuint *Index; /* == Findex or Bindex */
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GLboolean Edgeflag[VB_SIZE]; /* Polygon edge flags */
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GLfloat TexCoord[VB_SIZE][4];/* Texture coords */
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GLubyte ClipMask[VB_SIZE]; /* bitwise-OR of CLIP_* values, below */
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GLubyte ClipOrMask; /* bitwise-OR of all ClipMask[] values */
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GLubyte ClipAndMask; /* bitwise-AND of all ClipMask[] values */
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GLuint Start; /* First vertex to process */
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GLuint Count; /* Number of vertexes in buffer */
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GLuint Free; /* Next empty position for clipping */
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GLuint VertexSizeMask; /* Bitwise-or of VERTEX[234]_BIT */
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GLuint TexCoordSize; /* Either 2 or 4 */
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GLboolean MonoColor; /* Do all vertices have same color? */
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GLboolean MonoNormal; /* Do all vertices have same normal? */
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GLboolean MonoMaterial; /* Do all vertices have same material? */
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/* to handle glMaterial calls inside glBegin/glEnd: */
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GLuint MaterialMask[VB_SIZE]; /* Which material values to change */
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struct gl_material Material[VB_SIZE][2]; /* New material values */
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};
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/* Vertex buffer clipping flags */
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#define CLIP_RIGHT_BIT 0x01
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#define CLIP_LEFT_BIT 0x02
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#define CLIP_TOP_BIT 0x04
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#define CLIP_BOTTOM_BIT 0x08
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#define CLIP_NEAR_BIT 0x10
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#define CLIP_FAR_BIT 0x20
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#define CLIP_USER_BIT 0x40
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#define CLIP_ALL_BITS 0x3f
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#define CLIP_ALL 1
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#define CLIP_NONE 2
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#define CLIP_SOME 3
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extern struct vertex_buffer *gl_alloc_vb(void);
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#endif
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