src/mesa/drivers/dri/swrast/swrast_priv.h

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.1
   4  *
   5  * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 /*
  26  * Authors:
  27  *    George Sapountzis <gsap7@yahoo.gr>
  28  */
  29
  30
  31 #ifndef _SWRAST_PRIV_H
  32 #define _SWRAST_PRIV_H
  33
  34 #include <GL/gl.h>
  35 #include <GL/internal/dri_interface.h>
  36 #include "main/mtypes.h"
  37
  38
  39 /**
  40  * Debugging
  41  */
  42 #define DEBUG_CORE      0
  43 #define DEBUG_SPAN      0
  44
  45 #if DEBUG_CORE
  46 #define TRACE _mesa_printf("--> %s\n", __FUNCTION__)
  47 #else
  48 #define TRACE
  49 #endif
  50
  51 #if DEBUG_SPAN
  52 #define TRACE_SPAN _mesa_printf("--> %s\n", __FUNCTION__)
  53 #else
  54 #define TRACE_SPAN
  55 #endif
  56
  57
  58 /**
  59  * Data types
  60  */
  61 struct __DRIscreenRec {
  62     int num;
  63
  64     const __DRIextension **extensions;
  65
  66     const __DRIswrastLoaderExtension *swrast_loader;
  67 };
  68
  69 struct __DRIcontextRec {
  70     GLcontext Base;
  71
  72     void *loaderPrivate;
  73
  74     __DRIscreen *driScreenPriv;
  75 };
  76
  77 struct __DRIdrawableRec {
  78     GLframebuffer Base;
  79
  80     void *loaderPrivate;
  81
  82     __DRIscreen *driScreenPriv;
  83
  84     /* scratch row for optimized front-buffer rendering */
  85     char *row;
  86 };
  87
  88 struct swrast_renderbuffer {
  89     struct gl_renderbuffer Base;
  90
  91     /* renderbuffer pitch (in bytes) */
  92     GLuint pitch;
  93    /* bits per pixel of storage */
  94     GLuint bpp;
  95 };
  96
  97 static INLINE __DRIcontext *
  98 swrast_context(GLcontext *ctx)
  99 {
 100     return (__DRIcontext *) ctx;
 101 }
 102
 103 static INLINE __DRIdrawable *
 104 swrast_drawable(GLframebuffer *fb)
 105 {
 106     return (__DRIdrawable *) fb;
 107 }
 108
 109 static INLINE struct swrast_renderbuffer *
 110 swrast_renderbuffer(struct gl_renderbuffer *rb)
 111 {
 112     return (struct swrast_renderbuffer *) rb;
 113 }
 114
 115
 116 /**
 117  * Pixel formats we support
 118  */
 119 #define PF_CI8        1         /**< Color Index mode */
 120 #define PF_A8R8G8B8   2         /**< 32bpp TrueColor:  8-A, 8-R, 8-G, 8-B bits */
 121 #define PF_R5G6B5     3         /**< 16bpp TrueColor:  5-R, 6-G, 5-B bits */
 122 #define PF_R3G3B2     4         /**<  8bpp TrueColor:  3-R, 3-G, 2-B bits */
 123 #define PF_X8R8G8B8   5         /**< 32bpp TrueColor:  8-R, 8-G, 8-B bits */
 124
 125 /**
 126  * Renderbuffer pitch alignment (in bits).
 127  *
 128  * The xorg loader requires padding images to 32 bits. However, this should
 129  * become a screen/drawable parameter XXX
 130  */
 131 #define PITCH_ALIGN_BITS 32
 132
 133
 134 /* swrast_span.c */
 135
 136 extern void
 137 swrast_set_span_funcs_back(struct swrast_renderbuffer *xrb,
 138                            GLuint pixel_format);
 139
 140 extern void
 141 swrast_set_span_funcs_front(struct swrast_renderbuffer *xrb,
 142                             GLuint pixel_format);
 143
 144 #endif /* _SWRAST_PRIV_H_ */