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 swrast_renderbuffer {
  63     struct gl_renderbuffer Base;
  64
  65     /* renderbuffer pitch (in bytes) */
  66     GLuint pitch;
  67    /* bits per pixel of storage */
  68     GLuint bpp;
  69 };
  70
  71 static INLINE __DRIcontext *
  72 swrast_context(GLcontext *ctx)
  73 {
  74     return (__DRIcontext *) ctx;
  75 }
  76
  77 static INLINE __DRIdrawable *
  78 swrast_drawable(GLframebuffer *fb)
  79 {
  80     return (__DRIdrawable *) fb;
  81 }
  82
  83 static INLINE struct swrast_renderbuffer *
  84 swrast_renderbuffer(struct gl_renderbuffer *rb)
  85 {
  86     return (struct swrast_renderbuffer *) rb;
  87 }
  88
  89
  90 /**
  91  * Pixel formats we support
  92  */
  93 #define PF_A8R8G8B8   1         /**< 32bpp TrueColor:  8-A, 8-R, 8-G, 8-B bits */
  94 #define PF_R5G6B5     2         /**< 16bpp TrueColor:  5-R, 6-G, 5-B bits */
  95 #define PF_R3G3B2     3         /**<  8bpp TrueColor:  3-R, 3-G, 2-B bits */
  96 #define PF_X8R8G8B8   4         /**< 32bpp TrueColor:  8-R, 8-G, 8-B bits */
  97
  98 /**
  99  * Renderbuffer pitch alignment (in bits).
 100  *
 101  * The xorg loader requires padding images to 32 bits. However, this should
 102  * become a screen/drawable parameter XXX
 103  */
 104 #define PITCH_ALIGN_BITS 32
 105
 106
 107 /* swrast_span.c */
 108
 109 extern void
 110 swrast_set_span_funcs_back(struct swrast_renderbuffer *xrb,
 111                            GLuint pixel_format);
 112
 113 extern void
 114 swrast_set_span_funcs_front(struct swrast_renderbuffer *xrb,
 115                             GLuint pixel_format);
 116
 117 #endif /* _SWRAST_PRIV_H_ */