filename | src/drivers/video_x11.c |
changeset | 442:c0dcf22c8e08 |
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author | nkeynes |
date | Wed Oct 17 11:26:45 2007 +0000 (16 years ago) |
permissions | -rw-r--r-- |
last change | Split config management out to config.[ch] Manage config filename Check home dir + sysconfdir for conf file Initial work on a path settings dialog |
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nkeynes@94 | 1 | /** |
nkeynes@442 | 2 | * $Id: video_x11.c,v 1.18 2007-10-13 04:00:23 nkeynes Exp $ |
nkeynes@94 | 3 | * |
nkeynes@103 | 4 | * Shared functions for all X11-based display drivers. |
nkeynes@94 | 5 | * |
nkeynes@94 | 6 | * Copyright (c) 2005 Nathan Keynes. |
nkeynes@94 | 7 | * |
nkeynes@94 | 8 | * This program is free software; you can redistribute it and/or modify |
nkeynes@94 | 9 | * it under the terms of the GNU General Public License as published by |
nkeynes@94 | 10 | * the Free Software Foundation; either version 2 of the License, or |
nkeynes@94 | 11 | * (at your option) any later version. |
nkeynes@94 | 12 | * |
nkeynes@94 | 13 | * This program is distributed in the hope that it will be useful, |
nkeynes@94 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
nkeynes@94 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
nkeynes@94 | 16 | * GNU General Public License for more details. |
nkeynes@94 | 17 | */ |
nkeynes@94 | 18 | |
nkeynes@103 | 19 | #include <X11/Xlib.h> |
nkeynes@103 | 20 | #include <GL/glx.h> |
nkeynes@103 | 21 | #include "dream.h" |
nkeynes@94 | 22 | #include "drivers/video_x11.h" |
nkeynes@405 | 23 | #include "drivers/gl_common.h" |
nkeynes@94 | 24 | |
nkeynes@352 | 25 | extern uint32_t video_width, video_height; |
nkeynes@352 | 26 | |
nkeynes@103 | 27 | /** |
nkeynes@103 | 28 | * General X11 parameters. The front-end driver is expected to set this up |
nkeynes@352 | 29 | * by calling video_glx_init after initializing itself. |
nkeynes@103 | 30 | */ |
nkeynes@352 | 31 | static Display *video_x11_display = NULL; |
nkeynes@352 | 32 | static Screen *video_x11_screen = NULL; |
nkeynes@352 | 33 | static Window video_x11_window = 0; |
nkeynes@405 | 34 | static gboolean glsl_loaded = FALSE; |
nkeynes@352 | 35 | |
nkeynes@103 | 36 | /** |
nkeynes@103 | 37 | * GLX parameters. |
nkeynes@103 | 38 | */ |
nkeynes@352 | 39 | static GLXContext glx_context; |
nkeynes@352 | 40 | static Window glx_window; |
nkeynes@352 | 41 | static XSetWindowAttributes win_attrs; |
nkeynes@103 | 42 | |
nkeynes@424 | 43 | gboolean video_glx_create_window( int width, int height ); |
nkeynes@424 | 44 | |
nkeynes@352 | 45 | gboolean video_glx_init( Display *display, Screen *screen, Window window, |
nkeynes@352 | 46 | int width, int height, display_driver_t driver ) |
nkeynes@94 | 47 | { |
nkeynes@94 | 48 | video_x11_display = display; |
nkeynes@94 | 49 | video_x11_screen = screen; |
nkeynes@442 | 50 | glx_window = video_x11_window = window; |
nkeynes@352 | 51 | |
nkeynes@442 | 52 | if( !video_glx_init_context(glx_window) ) { |
nkeynes@352 | 53 | return FALSE; |
nkeynes@352 | 54 | } |
nkeynes@352 | 55 | |
nkeynes@352 | 56 | if( gl_fbo_is_supported() ) { |
nkeynes@352 | 57 | gl_fbo_init(driver); |
nkeynes@405 | 58 | |
nkeynes@405 | 59 | #ifdef USE_GLSL |
nkeynes@405 | 60 | if( glsl_is_supported() ) { |
nkeynes@405 | 61 | glsl_loaded = glsl_load_shaders( glsl_vertex_shader_src, glsl_fragment_shader_src ); |
nkeynes@405 | 62 | if( !glsl_loaded ) { |
nkeynes@405 | 63 | WARN( "Shaders failed to load" ); |
nkeynes@405 | 64 | } |
nkeynes@405 | 65 | } else { |
nkeynes@405 | 66 | WARN( "Shaders not supported" ); |
nkeynes@405 | 67 | } |
nkeynes@405 | 68 | #endif |
nkeynes@352 | 69 | return TRUE; |
nkeynes@352 | 70 | } else { |
nkeynes@352 | 71 | /* Pbuffers? */ |
nkeynes@352 | 72 | ERROR( "Framebuffer objects not supported (required in this version)" ); |
nkeynes@352 | 73 | video_glx_shutdown(); |
nkeynes@352 | 74 | return FALSE; |
nkeynes@352 | 75 | } |
nkeynes@94 | 76 | } |
nkeynes@94 | 77 | |
nkeynes@442 | 78 | /** |
nkeynes@442 | 79 | * Create a new window with a custom visual - not used at the moment, |
nkeynes@442 | 80 | * but retained for future reference. |
nkeynes@442 | 81 | */ |
nkeynes@442 | 82 | gboolean video_x11_create_window( int width, int height ) |
nkeynes@103 | 83 | { |
nkeynes@103 | 84 | int visual_attrs[] = { GLX_RGBA, GLX_RED_SIZE, 4, |
nkeynes@103 | 85 | GLX_GREEN_SIZE, 4, |
nkeynes@103 | 86 | GLX_BLUE_SIZE, 4, |
nkeynes@103 | 87 | GLX_ALPHA_SIZE, 4, |
nkeynes@335 | 88 | GLX_DEPTH_SIZE, 24, |
nkeynes@103 | 89 | GLX_DOUBLEBUFFER, |
nkeynes@103 | 90 | None }; |
nkeynes@103 | 91 | int screen = XScreenNumberOfScreen(video_x11_screen); |
nkeynes@103 | 92 | XVisualInfo *visual; |
nkeynes@442 | 93 | /* Find ourselves a nice visual */ |
nkeynes@442 | 94 | visual = glXChooseVisual( video_x11_display, |
nkeynes@442 | 95 | screen, |
nkeynes@442 | 96 | visual_attrs ); |
nkeynes@103 | 97 | |
nkeynes@442 | 98 | /* Create a child window with the visual in question */ |
nkeynes@103 | 99 | win_attrs.event_mask = 0; |
nkeynes@103 | 100 | win_attrs.colormap = XCreateColormap( video_x11_display, |
nkeynes@103 | 101 | RootWindowOfScreen(video_x11_screen), |
nkeynes@103 | 102 | visual->visual, AllocNone ); |
nkeynes@103 | 103 | glx_window = XCreateWindow( video_x11_display, video_x11_window, |
nkeynes@352 | 104 | 0, 0, width, height, 0, visual->depth, |
nkeynes@103 | 105 | InputOutput, visual->visual, |
nkeynes@103 | 106 | CWColormap | CWEventMask, |
nkeynes@103 | 107 | &win_attrs ); |
nkeynes@103 | 108 | if( glx_window == None ) { |
nkeynes@103 | 109 | /* Hrm. Aww, no window? */ |
nkeynes@103 | 110 | ERROR( "Unable to create GLX window" ); |
nkeynes@103 | 111 | if( win_attrs.colormap ) |
nkeynes@103 | 112 | XFreeColormap( video_x11_display, win_attrs.colormap ); |
nkeynes@442 | 113 | XFree(visual); |
nkeynes@103 | 114 | return FALSE; |
nkeynes@103 | 115 | } |
nkeynes@103 | 116 | XMapRaised( video_x11_display, glx_window ); |
nkeynes@439 | 117 | |
nkeynes@442 | 118 | XFree(visual); |
nkeynes@442 | 119 | return TRUE; |
nkeynes@442 | 120 | } |
nkeynes@439 | 121 | |
nkeynes@442 | 122 | gboolean video_glx_init_context( Window window ) |
nkeynes@442 | 123 | { |
nkeynes@442 | 124 | XWindowAttributes attr; |
nkeynes@442 | 125 | XVisualInfo *visual; |
nkeynes@442 | 126 | XVisualInfo query; |
nkeynes@442 | 127 | int query_items = 1; |
nkeynes@442 | 128 | |
nkeynes@442 | 129 | XGetWindowAttributes(video_x11_display, window, &attr); |
nkeynes@442 | 130 | |
nkeynes@442 | 131 | query.visualid = XVisualIDFromVisual(attr.visual); |
nkeynes@442 | 132 | visual = XGetVisualInfo(video_x11_display, VisualIDMask, &query, &query_items ); |
nkeynes@442 | 133 | if( visual == NULL ) { |
nkeynes@442 | 134 | ERROR( "Unable to obtain a compatible visual" ); |
nkeynes@103 | 135 | return FALSE; |
nkeynes@103 | 136 | } |
nkeynes@442 | 137 | |
nkeynes@442 | 138 | int major, minor; |
nkeynes@442 | 139 | if( glXQueryVersion( video_x11_display, &major, &minor ) == False ) { |
nkeynes@442 | 140 | ERROR( "X Display lacks the GLX nature" ); |
nkeynes@442 | 141 | XFree(visual); |
nkeynes@442 | 142 | return FALSE; |
nkeynes@442 | 143 | } |
nkeynes@442 | 144 | if( major < 1 || minor < 2 ) { |
nkeynes@442 | 145 | ERROR( "X display supports GLX %d.%d, but we need at least 1.2", major, minor ); |
nkeynes@442 | 146 | XFree(visual); |
nkeynes@442 | 147 | return FALSE; |
nkeynes@442 | 148 | } |
nkeynes@442 | 149 | |
nkeynes@442 | 150 | /* And a matching gl context */ |
nkeynes@442 | 151 | glx_context = glXCreateContext( video_x11_display, visual, None, True ); |
nkeynes@442 | 152 | if( glx_context == NULL ) { |
nkeynes@442 | 153 | ERROR( "Unable to obtain a GLX Context. Possibly your system is broken in some small, undefineable way" ); |
nkeynes@442 | 154 | XFree(visual); |
nkeynes@442 | 155 | return FALSE; |
nkeynes@442 | 156 | } |
nkeynes@442 | 157 | |
nkeynes@442 | 158 | if( glXMakeCurrent( video_x11_display, window, glx_context ) == False ) { |
nkeynes@442 | 159 | ERROR( "Unable to prepare GLX context for drawing" ); |
nkeynes@442 | 160 | glXDestroyContext( video_x11_display, glx_context ); |
nkeynes@442 | 161 | XFree(visual); |
nkeynes@442 | 162 | return FALSE; |
nkeynes@442 | 163 | } |
nkeynes@442 | 164 | XFree(visual); |
nkeynes@103 | 165 | return TRUE; |
nkeynes@103 | 166 | } |
nkeynes@370 | 167 | |
nkeynes@442 | 168 | |
nkeynes@352 | 169 | void video_glx_shutdown() |
nkeynes@352 | 170 | { |
nkeynes@405 | 171 | if( glsl_loaded ) { |
nkeynes@405 | 172 | glsl_unload_shaders(); |
nkeynes@405 | 173 | } |
nkeynes@370 | 174 | if( glx_window != None ) { |
nkeynes@370 | 175 | XDestroyWindow( video_x11_display, glx_window ); |
nkeynes@370 | 176 | XFreeColormap( video_x11_display, win_attrs.colormap ); |
nkeynes@370 | 177 | glx_window = None; |
nkeynes@370 | 178 | } |
nkeynes@370 | 179 | if( glx_context != NULL ) { |
nkeynes@370 | 180 | glXDestroyContext( video_x11_display, glx_context ); |
nkeynes@370 | 181 | glx_context = NULL; |
nkeynes@370 | 182 | } |
nkeynes@352 | 183 | } |
nkeynes@352 | 184 | |
nkeynes@103 | 185 | |
nkeynes@108 | 186 | int video_glx_load_font( const gchar *font_name ) |
nkeynes@108 | 187 | { |
nkeynes@108 | 188 | int lists; |
nkeynes@108 | 189 | XFontStruct *font = XLoadQueryFont(video_x11_display, font_name ); |
nkeynes@108 | 190 | if (font == NULL) |
nkeynes@108 | 191 | return -1; |
nkeynes@108 | 192 | |
nkeynes@108 | 193 | lists = glGenLists(96); |
nkeynes@108 | 194 | glXUseXFont(font->fid, 32, 96, lists); |
nkeynes@108 | 195 | XFreeFont(video_x11_display, font); |
nkeynes@424 | 196 | return lists; |
nkeynes@108 | 197 | } |
nkeynes@108 | 198 | |
nkeynes@108 | 199 | |
nkeynes@103 | 200 | void video_glx_swap_buffers( void ) |
nkeynes@103 | 201 | { |
nkeynes@103 | 202 | glXSwapBuffers( video_x11_display, glx_window ); |
nkeynes@103 | 203 | } |
nkeynes@103 | 204 |
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