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 #include "dri_sw.h"
  38
  39
  40 /**
  41  * Debugging
  42  */
  43 #define DEBUG_CORE      0
  44 #define DEBUG_SPAN      0
  45
  46 #if DEBUG_CORE
  47 #define TRACE printf("--> %s\n", __FUNCTION__)
  48 #else
  49 #define TRACE
  50 #endif
  51
  52 #if DEBUG_SPAN
  53 #define TRACE_SPAN printf("--> %s\n", __FUNCTION__)
  54 #else
  55 #define TRACE_SPAN
  56 #endif
  57
  58
  59 /**
  60  * Data types
  61  */
  62 struct dri_context
  63 {
  64     /* mesa */
  65     GLcontext Base;
  66
  67     /* dri */
  68     __DRIcontext *cPriv;
  69 };
  70
  71 static INLINE struct dri_context *
  72 dri_context(__DRIcontext * driContextPriv)
  73 {
  74     return (struct dri_context *)driContextPriv->driverPrivate;
  75 }
  76
  77 static INLINE struct dri_context *
  78 swrast_context(GLcontext *ctx)
  79 {
  80     return (struct dri_context *) ctx;
  81 }
  82
  83 struct dri_drawable
  84 {
  85     /* mesa */
  86     GLframebuffer Base;
  87
  88     /* dri */
  89     __DRIdrawable *dPriv;
  90
  91     /* scratch row for optimized front-buffer rendering */
  92     char *row;
  93 };
  94
  95 static INLINE struct dri_drawable *
  96 dri_drawable(__DRIdrawable * driDrawPriv)
  97 {
  98     return (struct dri_drawable *)driDrawPriv->driverPrivate;
  99 }
 100
 101 static INLINE struct dri_drawable *
 102 swrast_drawable(GLframebuffer *fb)
 103 {
 104     return (struct dri_drawable *) fb;
 105 }
 106
 107 struct swrast_renderbuffer {
 108     struct gl_renderbuffer Base;
 109
 110     /* renderbuffer pitch (in bytes) */
 111     GLuint pitch;
 112    /* bits per pixel of storage */
 113     GLuint bpp;
 114 };
 115
 116 static INLINE struct swrast_renderbuffer *
 117 swrast_renderbuffer(struct gl_renderbuffer *rb)
 118 {
 119     return (struct swrast_renderbuffer *) rb;
 120 }
 121
 122
 123 /**
 124  * Pixel formats we support
 125  */
 126 #define PF_A8R8G8B8   1         /**< 32bpp TrueColor:  8-A, 8-R, 8-G, 8-B bits */
 127 #define PF_R5G6B5     2         /**< 16bpp TrueColor:  5-R, 6-G, 5-B bits */
 128 #define PF_R3G3B2     3         /**<  8bpp TrueColor:  3-R, 3-G, 2-B bits */
 129 #define PF_X8R8G8B8   4         /**< 32bpp TrueColor:  8-R, 8-G, 8-B bits */
 130
 131 /**
 132  * Renderbuffer pitch alignment (in bits).
 133  *
 134  * The xorg loader requires padding images to 32 bits. However, this should
 135  * become a screen/drawable parameter XXX
 136  */
 137 #define PITCH_ALIGN_BITS 32
 138
 139
 140 /* swrast_span.c */
 141
 142 extern void
 143 swrast_set_span_funcs_back(struct swrast_renderbuffer *xrb,
 144                            GLuint pixel_format);
 145
 146 extern void
 147 swrast_set_span_funcs_front(struct swrast_renderbuffer *xrb,
 148                             GLuint pixel_format);
 149
 150 #endif /* _SWRAST_PRIV_H_ */