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  * 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  */
  58 struct dri_context
  59 {
  60     /* mesa, base class, must be first */
  61     GLcontext Base;
  62
  63     /* dri */
  64     __DRIcontext *cPriv;
  65 };
  66
  67 static INLINE struct dri_context *
  68 dri_context(__DRIcontext * driContextPriv)
  69 {
  70     return (struct dri_context *)driContextPriv->driverPrivate;
  71 }
  72
  73 static INLINE struct dri_context *
  74 swrast_context(GLcontext *ctx)
  75 {
  76     return (struct dri_context *) ctx;
  77 }
  78
  79 struct dri_drawable
  80 {
  81     /* mesa, base class, must be first */
  82     GLframebuffer Base;
  83
  84     /* dri */
  85     __DRIdrawable *dPriv;
  86
  87     /* scratch row for optimized front-buffer rendering */
  88     char *row;
  89 };
  90
  91 static INLINE struct dri_drawable *
  92 dri_drawable(__DRIdrawable * driDrawPriv)
  93 {
  94     return (struct dri_drawable *)driDrawPriv->driverPrivate;
  95 }
  96
  97 static INLINE struct dri_drawable *
  98 swrast_drawable(GLframebuffer *fb)
  99 {
 100     return (struct dri_drawable *) fb;
 101 }
 102
 103 struct 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
 112 static INLINE struct swrast_renderbuffer *
 113 swrast_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
 130 extern void
 131 swrast_set_span_funcs_back(struct swrast_renderbuffer *xrb,
 132                            GLuint pixel_format);
 133
 134 extern void
 135 swrast_set_span_funcs_front(struct swrast_renderbuffer *xrb,
 136                             GLuint pixel_format);
 137
 138 #endif /* _SWRAST_PRIV_H_ */