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      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 (at) 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 "dri_util.h"
     34 #include "swrast/s_context.h"
     35 
     36 
     37 /**
     38  * Debugging
     39  */
     40 #define DEBUG_CORE	0
     41 #define DEBUG_SPAN	0
     42 
     43 #if DEBUG_CORE
     44 #define TRACE printf("--> %s\n", __FUNCTION__)
     45 #else
     46 #define TRACE
     47 #endif
     48 
     49 #if DEBUG_SPAN
     50 #define TRACE_SPAN printf("--> %s\n", __FUNCTION__)
     51 #else
     52 #define TRACE_SPAN
     53 #endif
     54 
     55 
     56 /**
     57  * Data types
     58  */
     59 struct dri_context
     60 {
     61     /* mesa, base class, must be first */
     62     struct gl_context Base;
     63 
     64     /* dri */
     65     __DRIcontext *cPriv;
     66 };
     67 
     68 static INLINE struct dri_context *
     69 dri_context(__DRIcontext * driContextPriv)
     70 {
     71     return (struct dri_context *)driContextPriv->driverPrivate;
     72 }
     73 
     74 static INLINE struct dri_context *
     75 swrast_context(struct gl_context *ctx)
     76 {
     77     return (struct dri_context *) ctx;
     78 }
     79 
     80 struct dri_drawable
     81 {
     82     /* mesa, base class, must be first */
     83     struct gl_framebuffer Base;
     84 
     85     /* dri */
     86     __DRIdrawable *dPriv;
     87 
     88     /* scratch row for optimized front-buffer rendering */
     89     char *row;
     90 };
     91 
     92 static INLINE struct dri_drawable *
     93 dri_drawable(__DRIdrawable * driDrawPriv)
     94 {
     95     return (struct dri_drawable *)driDrawPriv->driverPrivate;
     96 }
     97 
     98 static INLINE struct dri_drawable *
     99 swrast_drawable(struct gl_framebuffer *fb)
    100 {
    101     return (struct dri_drawable *) fb;
    102 }
    103 
    104 struct dri_swrast_renderbuffer {
    105     struct swrast_renderbuffer Base;
    106     __DRIdrawable *dPriv;
    107 
    108     /* GL_MAP_*_BIT, used for mapping of front buffer. */
    109     GLbitfield map_mode;
    110    int map_x, map_y, map_w, map_h;
    111 
    112     /* renderbuffer pitch (in bytes) */
    113     GLuint pitch;
    114    /* bits per pixel of storage */
    115     GLuint bpp;
    116 };
    117 
    118 static INLINE struct dri_swrast_renderbuffer *
    119 dri_swrast_renderbuffer(struct gl_renderbuffer *rb)
    120 {
    121     return (struct dri_swrast_renderbuffer *) rb;
    122 }
    123 
    124 
    125 /**
    126  * Pixel formats we support
    127  */
    128 #define PF_A8R8G8B8   1		/**< 32bpp TrueColor:  8-A, 8-R, 8-G, 8-B bits */
    129 #define PF_R5G6B5     2		/**< 16bpp TrueColor:  5-R, 6-G, 5-B bits */
    130 #define PF_R3G3B2     3		/**<  8bpp TrueColor:  3-R, 3-G, 2-B bits */
    131 #define PF_X8R8G8B8   4		/**< 32bpp TrueColor:  8-R, 8-G, 8-B bits */
    132 
    133 
    134 #endif /* _SWRAST_PRIV_H_ */
    135