swrast_priv.h revision 31aca27c08d6a385c595d34fe4ee06390bf5b0e8 
1/*
2 * Mesa 3-D graphics library
3 * Version:  7.1
4 *
5 * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
6 * Copyright 2008, 2010 George Sapountzis <gsapountzis@gmail.com>
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26
27#ifndef _SWRAST_PRIV_H
28#define _SWRAST_PRIV_H
29
30#include <GL/gl.h>
31#include <GL/internal/dri_interface.h>
32#include "main/mtypes.h"
33#include "drisw_util.h"
34
35
36/**
37 * Debugging
38 */
39#define DEBUG_CORE	0
40#define DEBUG_SPAN	0
41
42#if DEBUG_CORE
43#define TRACE printf("--> %s\n", __FUNCTION__)
44#else
45#define TRACE
46#endif
47
48#if DEBUG_SPAN
49#define TRACE_SPAN printf("--> %s\n", __FUNCTION__)
50#else
51#define TRACE_SPAN
52#endif
53
54
55/**
56 * Data types
57 */
58struct dri_context
59{
60    /* mesa, base class, must be first */
61    GLcontext Base;
62
63    /* dri */
64    __DRIcontext *cPriv;
65};
66
67static INLINE struct dri_context *
68dri_context(__DRIcontext * driContextPriv)
69{
70    return (struct dri_context *)driContextPriv->driverPrivate;
71}
72
73static INLINE struct dri_context *
74swrast_context(GLcontext *ctx)
75{
76    return (struct dri_context *) ctx;
77}
78
79struct dri_drawable
80{
81    /* mesa, base class, must be first */
82    struct gl_framebuffer Base;
83
84    /* dri */
85    __DRIdrawable *dPriv;
86
87    /* scratch row for optimized front-buffer rendering */
88    char *row;
89};
90
91static INLINE struct dri_drawable *
92dri_drawable(__DRIdrawable * driDrawPriv)
93{
94    return (struct dri_drawable *)driDrawPriv->driverPrivate;
95}
96
97static INLINE struct dri_drawable *
98swrast_drawable(struct gl_framebuffer *fb)
99{
100    return (struct dri_drawable *) fb;
101}
102
103struct swrast_renderbuffer {
104    struct gl_renderbuffer Base;
105
106    /* renderbuffer pitch (in bytes) */
107    GLuint pitch;
108   /* bits per pixel of storage */
109    GLuint bpp;
110};
111
112static INLINE struct swrast_renderbuffer *
113swrast_renderbuffer(struct gl_renderbuffer *rb)
114{
115    return (struct swrast_renderbuffer *) rb;
116}
117
118
119/**
120 * Pixel formats we support
121 */
122#define PF_A8R8G8B8   1		/**< 32bpp TrueColor:  8-A, 8-R, 8-G, 8-B bits */
123#define PF_R5G6B5     2		/**< 16bpp TrueColor:  5-R, 6-G, 5-B bits */
124#define PF_R3G3B2     3		/**<  8bpp TrueColor:  3-R, 3-G, 2-B bits */
125#define PF_X8R8G8B8   4		/**< 32bpp TrueColor:  8-R, 8-G, 8-B bits */
126
127
128/* swrast_span.c */
129
130extern void
131swrast_set_span_funcs_back(struct swrast_renderbuffer *xrb,
132			   GLuint pixel_format);
133
134extern void
135swrast_set_span_funcs_front(struct swrast_renderbuffer *xrb,
136			    GLuint pixel_format);
137
138#endif /* _SWRAST_PRIV_H_ */
139