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annotate src/video/ataricommon/SDL_atarigl_c.h @ 2007:cff63f857ff3

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QNX6 support for int32/float32 (isn't this just ALSA?!)
author Ryan C. Gordon <icculus@icculus.org>
date Fri, 01 Sep 2006 06:55:41 +0000
parents c121d94672cb
children b657f0bc72c2
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2004 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /* Atari OSMesa.ldg implementation of SDL OpenGL support */
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25
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26 #ifndef _SDL_ATARIGL_H_
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27 #define _SDL_ATARIGL_H_
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28
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29 #if SDL_VIDEO_OPENGL
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30 #include <GL/osmesa.h>
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31 #endif
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32
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33 #include "../SDL_sysvideo.h"
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34
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35 /* Hidden "this" pointer for the video functions */
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36 #define _THIS SDL_VideoDevice *this
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37
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38 struct SDL_PrivateGLData
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39 {
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40
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41 int gl_active; /* to stop switching drivers while we have a valid context */
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42
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43 int gl_oldmesa; /* Old OpenGL support ? */
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44
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45 int gl_pixelsize; /* for CopyShadow functions */
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46
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47 SDL_bool gl_upsidedown; /* Some implementations draw upside down */
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48
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49 Uint8 *gl_shadow; /* Shadow buffer for old implementations */
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50
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51 /* for unsupported OSMesa buffer formats */
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52 void (*ConvertSurface) (_THIS, SDL_Surface * surface);
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53
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54 /* to convert the shadow buffer to the screen format */
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55 void (*CopyShadow) (_THIS, SDL_Surface * surface);
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56
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57 #if SDL_VIDEO_OPENGL
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58 OSMesaContext ctx;
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59
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60 /* OpenGL functions */
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61 void (*glGetIntegerv) (GLenum pname, GLint * value);
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62 void (*glFinish) (void);
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63 void (*glFlush) (void);
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64
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65 /* osmesa.ldg */
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66 OSMesaContext(*OSMesaCreateContextExt) (GLenum format, GLint depthBits,
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67 GLint stencilBits,
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68 GLint accumBits,
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69 OSMesaContext sharelist);
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70 void (*OSMesaDestroyContext) (OSMesaContext ctx);
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71 GLboolean(*OSMesaMakeCurrent) (OSMesaContext ctx, void *buffer,
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72 GLenum type, GLsizei width,
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73 GLsizei height);
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74 void (*OSMesaPixelStore) (GLint pname, GLint value);
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75 void *(*OSMesaGetProcAddress) (const char *funcName);
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76
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77 /* mesa_gl.ldg, tiny_gl.ldg */
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78 void *(*OSMesaCreateLDG) (long format, long type, long width,
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79 long height);
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80 void (*OSMesaDestroyLDG) (void);
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81
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82 /* Info needed to compare existing context with new asked one */
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83 int width, height;
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84 GLenum format;
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85 GLint depth, stencil, accum;
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86 #endif
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87 };
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88
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89 /* Variable names */
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90 #define gl_active (this->gl_data->gl_active)
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91 #define gl_ctx (this->gl_data->ctx)
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92 #define gl_oldmesa (this->gl_data->gl_oldmesa)
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93 #define gl_pixelsize (this->gl_data->gl_pixelsize)
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94 #define gl_upsidedown (this->gl_data->gl_upsidedown)
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95 #define gl_shadow (this->gl_data->gl_shadow)
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96 #define gl_convert (this->gl_data->ConvertSurface)
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97 #define gl_copyshadow (this->gl_data->CopyShadow)
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98 #define gl_curformat (this->gl_data->format)
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99 #define gl_curdepth (this->gl_data->depth)
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100 #define gl_curstencil (this->gl_data->stencil)
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101 #define gl_curaccum (this->gl_data->accum)
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102 #define gl_curwidth (this->gl_data->width)
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103 #define gl_curheight (this->gl_data->height)
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104
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105 /* OpenGL functions */
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106 extern int SDL_AtariGL_Init(_THIS, SDL_Surface * current);
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107 extern void SDL_AtariGL_Quit(_THIS, SDL_bool unload);
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108 extern void SDL_AtariGL_InitPointers(_THIS);
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109
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110 extern int SDL_AtariGL_LoadLibrary(_THIS, const char *path);
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111 extern void *SDL_AtariGL_GetProcAddress(_THIS, const char *proc);
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112 extern int SDL_AtariGL_GetAttribute(_THIS, SDL_GLattr attrib, int *value);
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113 extern int SDL_AtariGL_MakeCurrent(_THIS);
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114 extern void SDL_AtariGL_SwapBuffers(_THIS);
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115
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116 #endif /* _SDL_ATARIGL_H_ */
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117 /* vi: set ts=4 sw=4 expandtab: */