nkeynes@545 | 1 | /**
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nkeynes@586 | 2 | * $Id$
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nkeynes@545 | 3 | *
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nkeynes@545 | 4 | * Shared functions for all X11-based display drivers.
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nkeynes@545 | 5 | *
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nkeynes@545 | 6 | * Copyright (c) 2005 Nathan Keynes.
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nkeynes@545 | 7 | *
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nkeynes@545 | 8 | * This program is free software; you can redistribute it and/or modify
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nkeynes@545 | 9 | * it under the terms of the GNU General Public License as published by
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nkeynes@545 | 10 | * the Free Software Foundation; either version 2 of the License, or
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nkeynes@545 | 11 | * (at your option) any later version.
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nkeynes@545 | 12 | *
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nkeynes@545 | 13 | * This program is distributed in the hope that it will be useful,
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nkeynes@545 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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nkeynes@545 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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nkeynes@545 | 16 | * GNU General Public License for more details.
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nkeynes@545 | 17 | */
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nkeynes@545 | 18 |
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nkeynes@806 | 19 | #include <stdlib.h>
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nkeynes@635 | 20 | #include <string.h>
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nkeynes@586 | 21 | #include "display.h"
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nkeynes@545 | 22 | #include <X11/Xlib.h>
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nkeynes@545 | 23 | #include <GL/glx.h>
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nkeynes@635 | 24 | #include "pvr2/pvr2.h"
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nkeynes@635 | 25 | #include "pvr2/glutil.h"
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nkeynes@545 | 26 | #include "drivers/video_glx.h"
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nkeynes@635 | 27 | #include "drivers/video_gl.h"
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nkeynes@545 | 28 |
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nkeynes@545 | 29 | /**
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nkeynes@545 | 30 | * General X11 parameters. The front-end driver is expected to set this up
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nkeynes@545 | 31 | * by calling video_glx_init after initializing itself.
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nkeynes@545 | 32 | */
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nkeynes@545 | 33 | Display *video_x11_display = NULL;
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nkeynes@545 | 34 | Window video_x11_window = 0;
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nkeynes@545 | 35 |
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nkeynes@545 | 36 | static int glx_version = 100;
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nkeynes@606 | 37 | static XVisualInfo *glx_visual = NULL;
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nkeynes@545 | 38 | static GLXFBConfig glx_fbconfig;
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nkeynes@545 | 39 | static GLXContext glx_context = NULL;
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nkeynes@545 | 40 | static gboolean glx_is_initialized = FALSE;
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nkeynes@545 | 41 | static gboolean glx_fbconfig_supported = FALSE;
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nkeynes@545 | 42 | static gboolean glx_pbuffer_supported = FALSE;
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nkeynes@669 | 43 | static GLuint glx_pbuffer_texture = 0;
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nkeynes@1251 | 44 | static int glx_depth_bits = 0;
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nkeynes@545 | 45 |
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nkeynes@1076 | 46 | static void video_glx_swap_buffers( void );
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nkeynes@1134 | 47 | static void video_glx_print_info( FILE *out );
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nkeynes@1076 | 48 |
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nkeynes@545 | 49 | /* Prototypes for pbuffer support methods */
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nkeynes@545 | 50 | static void glx_pbuffer_init( display_driver_t driver );
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nkeynes@805 | 51 | static render_buffer_t glx_pbuffer_create_render_buffer( uint32_t width, uint32_t height, GLuint tex_id );
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nkeynes@545 | 52 | static void glx_pbuffer_destroy_render_buffer( render_buffer_t buffer );
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nkeynes@545 | 53 | static gboolean glx_pbuffer_set_render_target( render_buffer_t buffer );
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nkeynes@805 | 54 | static void glx_pbuffer_finish_render( render_buffer_t buffer );
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nkeynes@669 | 55 | static void glx_pbuffer_display_render_buffer( render_buffer_t buffer );
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nkeynes@545 | 56 | static void glx_pbuffer_load_frame_buffer( frame_buffer_t frame, render_buffer_t buffer );
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nkeynes@669 | 57 | static void glx_pbuffer_display_blank( uint32_t colour );
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nkeynes@545 | 58 | static gboolean glx_pbuffer_read_render_buffer( unsigned char *target, render_buffer_t buffer, int rowstride, int format );
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nkeynes@545 | 59 |
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nkeynes@545 | 60 | /**
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nkeynes@545 | 61 | * Test if a specific extension is supported. From opengl.org
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nkeynes@545 | 62 | * @param extension extension name to check for
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nkeynes@545 | 63 | * @return TRUE if supported, otherwise FALSE.
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nkeynes@545 | 64 | */
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nkeynes@545 | 65 | gboolean isServerGLXExtensionSupported( Display *display, int screen,
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nkeynes@736 | 66 | const char *extension )
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nkeynes@545 | 67 | {
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nkeynes@545 | 68 | const char *extensions = NULL;
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nkeynes@545 | 69 | const char *start;
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nkeynes@545 | 70 | char *where, *terminator;
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nkeynes@545 | 71 |
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nkeynes@545 | 72 | /* Extension names should not have spaces. */
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nkeynes@545 | 73 | where = strchr(extension, ' ');
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nkeynes@545 | 74 | if (where || *extension == '\0')
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nkeynes@736 | 75 | return 0;
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nkeynes@545 | 76 | extensions = glXQueryServerString(display, screen, GLX_EXTENSIONS);
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nkeynes@545 | 77 | start = extensions;
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nkeynes@545 | 78 | for (;;) {
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nkeynes@736 | 79 | where = strstr((const char *) start, extension);
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nkeynes@736 | 80 | if (!where)
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nkeynes@736 | 81 | break;
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nkeynes@736 | 82 | terminator = where + strlen(extension);
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nkeynes@736 | 83 | if (where == start || *(where - 1) == ' ')
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nkeynes@736 | 84 | if (*terminator == ' ' || *terminator == '\0')
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nkeynes@736 | 85 | return TRUE;
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nkeynes@736 | 86 | start = terminator;
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nkeynes@545 | 87 | }
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nkeynes@545 | 88 | return FALSE;
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nkeynes@545 | 89 | }
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nkeynes@545 | 90 |
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nkeynes@545 | 91 | gboolean video_glx_init( Display *display, int screen )
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nkeynes@545 | 92 | {
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nkeynes@545 | 93 | int major, minor;
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nkeynes@982 | 94 | int glx_major, glx_minor, glx_error;
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nkeynes@545 | 95 |
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nkeynes@545 | 96 | if( glx_is_initialized ) {
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nkeynes@545 | 97 | return TRUE;
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nkeynes@545 | 98 | }
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nkeynes@545 | 99 |
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nkeynes@982 | 100 | Bool result = XQueryExtension( display, "GLX", &glx_major, &glx_minor, &glx_error ) &&
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nkeynes@982 | 101 | glXQueryVersion( display, &major, &minor );
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nkeynes@982 | 102 | if( result == False ) {
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nkeynes@982 | 103 | ERROR( "GLX not supported on display" );
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nkeynes@982 | 104 | return FALSE;
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nkeynes@545 | 105 | }
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nkeynes@545 | 106 |
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nkeynes@982 | 107 | glx_version = (major*100) + minor;
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nkeynes@982 | 108 |
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nkeynes@863 | 109 | #ifdef APPLE_BUILD
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nkeynes@863 | 110 | /* fbconfig is broken on at least the 10.5 GLX implementation */
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nkeynes@863 | 111 | glx_fbconfig_supported = FALSE;
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nkeynes@863 | 112 | #else
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nkeynes@545 | 113 | glx_fbconfig_supported = (glx_version >= 103 ||
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nkeynes@736 | 114 | isServerGLXExtensionSupported(display, screen,
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nkeynes@736 | 115 | "GLX_SGIX_fbconfig") );
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nkeynes@863 | 116 | #endif
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nkeynes@545 | 117 | glx_pbuffer_supported = (glx_version >= 103 ||
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nkeynes@736 | 118 | isServerGLXExtensionSupported(display, screen,
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nkeynes@736 | 119 | "GLX_SGIX_pbuffer") );
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nkeynes@863 | 120 | // glx_fbconfig_supported = FALSE;
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nkeynes@545 | 121 | if( glx_fbconfig_supported ) {
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nkeynes@736 | 122 | int nelem;
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nkeynes@1251 | 123 | glx_depth_bits = 24;
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nkeynes@545 | 124 | int fb_attribs[] = { GLX_DRAWABLE_TYPE,
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nkeynes@736 | 125 | GLX_PBUFFER_BIT|GLX_WINDOW_BIT,
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nkeynes@736 | 126 | GLX_RENDER_TYPE, GLX_RGBA_BIT,
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nkeynes@863 | 127 | GLX_DEPTH_SIZE, 24,
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nkeynes@863 | 128 | GLX_STENCIL_SIZE, 8, 0 };
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nkeynes@736 | 129 | GLXFBConfig *configs = glXChooseFBConfig( display, screen,
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nkeynes@736 | 130 | fb_attribs, &nelem );
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nkeynes@606 | 131 |
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nkeynes@736 | 132 | if( configs == NULL || nelem == 0 ) {
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nkeynes@736 | 133 | /* Try a 16-bit depth buffer and see if it helps */
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nkeynes@736 | 134 | fb_attribs[5] = 16;
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nkeynes@1251 | 135 | glx_depth_bits = 16;
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nkeynes@736 | 136 | configs = glXChooseFBConfig( display, screen, fb_attribs, &nelem );
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nkeynes@736 | 137 | if( nelem > 0 ) {
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nkeynes@676 | 138 | WARN( "Using a 16-bit depth buffer - expect video glitches" );
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nkeynes@676 | 139 | }
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nkeynes@545 | 140 |
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nkeynes@676 | 141 | }
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nkeynes@676 | 142 | if( configs == NULL || nelem == 0 ) {
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nkeynes@736 | 143 | /* Still didn't work. Fallback to 1.2 methods */
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nkeynes@736 | 144 | glx_fbconfig_supported = FALSE;
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nkeynes@736 | 145 | glx_pbuffer_supported = FALSE;
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nkeynes@736 | 146 | } else {
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nkeynes@736 | 147 | glx_fbconfig = configs[0];
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nkeynes@736 | 148 | glx_visual = glXGetVisualFromFBConfig(display, glx_fbconfig);
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nkeynes@736 | 149 | XFree(configs);
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nkeynes@736 | 150 | }
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nkeynes@545 | 151 | }
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nkeynes@545 | 152 |
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nkeynes@545 | 153 | if( !glx_fbconfig_supported ) {
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nkeynes@1251 | 154 | glx_depth_bits = 24;
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nkeynes@863 | 155 | int attribs[] = { GLX_RGBA, GLX_DEPTH_SIZE, 24, GLX_STENCIL_SIZE, 8, 0 };
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nkeynes@736 | 156 | glx_visual = glXChooseVisual( display, screen, attribs );
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nkeynes@676 | 157 | if( glx_visual == NULL ) {
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nkeynes@676 | 158 | /* Try the 16-bit fallback here too */
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nkeynes@1251 | 159 | glx_depth_bits = 16;
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nkeynes@676 | 160 | attribs[2] = 16;
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nkeynes@676 | 161 | glx_visual = glXChooseVisual( display, screen, attribs );
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nkeynes@676 | 162 | if( glx_visual != NULL ) {
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nkeynes@676 | 163 | WARN( "Using a 16-bit depth buffer - expect video glitches" );
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nkeynes@676 | 164 | }
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nkeynes@676 | 165 | }
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nkeynes@545 | 166 | }
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nkeynes@606 | 167 |
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nkeynes@606 | 168 | if( glx_visual == NULL ) {
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nkeynes@606 | 169 | return FALSE;
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nkeynes@606 | 170 | }
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nkeynes@606 | 171 |
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nkeynes@545 | 172 | glx_is_initialized = TRUE;
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nkeynes@545 | 173 | return TRUE;
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nkeynes@545 | 174 | }
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nkeynes@545 | 175 |
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nkeynes@1134 | 176 | static void video_glx_print_info( FILE *out )
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nkeynes@1134 | 177 | {
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nkeynes@1134 | 178 | XWindowAttributes attr;
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nkeynes@1134 | 179 |
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nkeynes@1134 | 180 | if( !XGetWindowAttributes(video_x11_display, video_x11_window, &attr) )
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nkeynes@1134 | 181 | return; /* Failed */
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nkeynes@1134 | 182 | int screen = XScreenNumberOfScreen(attr.screen);
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nkeynes@1134 | 183 |
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nkeynes@1134 | 184 | fprintf( out, "GLX Server: %s %s\n", glXQueryServerString(video_x11_display, screen, GLX_VENDOR),
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nkeynes@1134 | 185 | glXQueryServerString(video_x11_display, screen, GLX_VERSION) );
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nkeynes@1134 | 186 | fprintf( out, "GLX Client: %s %s\n", glXGetClientString(video_x11_display, GLX_VENDOR),
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nkeynes@1134 | 187 | glXGetClientString(video_x11_display, GLX_VERSION) );
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nkeynes@1134 | 188 | fprintf( out, "GLX Server Extensions:\n" );
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nkeynes@1134 | 189 | fprint_extensions( out, glXQueryServerString(video_x11_display, screen, GLX_EXTENSIONS) );
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nkeynes@1134 | 190 | fprintf( out, "GLX Client Extensions:\n" );
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nkeynes@1134 | 191 | fprint_extensions( out, glXGetClientString(video_x11_display, GLX_EXTENSIONS) );
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nkeynes@1134 | 192 | fprintf( out, "GLX Extensions:\n" );
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nkeynes@1134 | 193 | fprint_extensions( out, glXQueryExtensionsString(video_x11_display, screen) );
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nkeynes@1134 | 194 |
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nkeynes@1134 | 195 | }
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nkeynes@1134 | 196 |
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nkeynes@545 | 197 | gboolean video_glx_init_context( Display *display, Window window )
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nkeynes@545 | 198 | {
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nkeynes@545 | 199 | if( glx_fbconfig_supported ) {
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nkeynes@545 | 200 | glx_context = glXCreateNewContext( display, glx_fbconfig,
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nkeynes@736 | 201 | GLX_RGBA_TYPE, NULL, True );
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nkeynes@736 | 202 | if( glx_context == NULL ) {
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nkeynes@736 | 203 | ERROR( "Unable to create a GLX Context.");
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nkeynes@736 | 204 | return FALSE;
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nkeynes@736 | 205 | }
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nkeynes@545 | 206 |
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nkeynes@1001 | 207 | if( glXMakeCurrent( display, window,
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nkeynes@736 | 208 | glx_context ) == False ) {
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nkeynes@736 | 209 | ERROR( "Unable to prepare GLX context for drawing" );
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nkeynes@736 | 210 | glXDestroyContext( display, glx_context );
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nkeynes@736 | 211 | return FALSE;
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nkeynes@736 | 212 | }
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nkeynes@545 | 213 | } else {
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nkeynes@545 | 214 | glx_context = glXCreateContext( display, glx_visual, None, True );
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nkeynes@736 | 215 | if( glx_context == NULL ) {
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nkeynes@736 | 216 | ERROR( "Unable to create a GLX Context.");
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nkeynes@736 | 217 | return FALSE;
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nkeynes@736 | 218 | }
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nkeynes@736 | 219 |
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nkeynes@736 | 220 | if( glXMakeCurrent( display, window, glx_context ) == False ) {
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nkeynes@736 | 221 | ERROR( "Unable to prepare GLX context for drawing" );
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nkeynes@736 | 222 | glXDestroyContext( display, glx_context );
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nkeynes@736 | 223 | return FALSE;
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nkeynes@736 | 224 | }
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nkeynes@545 | 225 | }
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nkeynes@545 | 226 |
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nkeynes@545 | 227 | if( !glXIsDirect(display, glx_context) ) {
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nkeynes@736 | 228 | WARN( "Not using direct rendering - this is likely to be slow" );
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nkeynes@545 | 229 | }
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nkeynes@545 | 230 |
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nkeynes@545 | 231 | video_x11_display = display;
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nkeynes@545 | 232 | video_x11_window = window;
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nkeynes@545 | 233 |
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nkeynes@545 | 234 | return TRUE;
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nkeynes@545 | 235 | }
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nkeynes@545 | 236 |
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nkeynes@545 | 237 | gboolean video_glx_init_driver( display_driver_t driver )
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nkeynes@545 | 238 | {
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nkeynes@1076 | 239 | driver->swap_buffers = video_glx_swap_buffers;
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nkeynes@1134 | 240 | driver->print_info = video_glx_print_info;
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nkeynes@1134 | 241 | driver->capabilities.has_gl = TRUE;
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nkeynes@1251 | 242 | driver->capabilities.depth_bits = glx_depth_bits;
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nkeynes@1258 | 243 | if( !gl_init_driver(driver, !glx_pbuffer_supported) ) {
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nkeynes@545 | 244 | video_glx_shutdown();
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nkeynes@736 | 245 | return FALSE;
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nkeynes@545 | 246 | }
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nkeynes@1258 | 247 | if( driver->create_render_buffer == NULL ) {
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nkeynes@1258 | 248 | /* If we get here, pbuffers are supported and FBO didn't work */
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nkeynes@1258 | 249 | glx_pbuffer_init(driver);
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nkeynes@1258 | 250 | }
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nkeynes@545 | 251 | return TRUE;
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nkeynes@545 | 252 | }
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nkeynes@545 | 253 |
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nkeynes@545 | 254 |
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nkeynes@545 | 255 | void video_glx_shutdown()
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nkeynes@545 | 256 | {
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nkeynes@736 | 257 | // texcache_gl_shutdown();
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nkeynes@545 | 258 | glx_is_initialized = FALSE;
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nkeynes@545 | 259 | if( glx_context != NULL ) {
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nkeynes@545 | 260 | glXDestroyContext( video_x11_display, glx_context );
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nkeynes@736 | 261 | glx_context = NULL;
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nkeynes@545 | 262 | }
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nkeynes@545 | 263 | if( glx_visual != NULL ) {
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nkeynes@545 | 264 | XFree(glx_visual);
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nkeynes@736 | 265 | glx_visual = NULL;
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nkeynes@545 | 266 | }
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nkeynes@545 | 267 | }
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nkeynes@545 | 268 |
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nkeynes@545 | 269 |
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nkeynes@545 | 270 | XVisualInfo *video_glx_get_visual()
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nkeynes@545 | 271 | {
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nkeynes@545 | 272 | return glx_visual;
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nkeynes@545 | 273 | }
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nkeynes@545 | 274 |
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nkeynes@545 | 275 |
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nkeynes@545 | 276 | int video_glx_load_font( const gchar *font_name )
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nkeynes@545 | 277 | {
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nkeynes@545 | 278 | int lists;
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nkeynes@545 | 279 | XFontStruct *font = XLoadQueryFont(video_x11_display, font_name );
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nkeynes@545 | 280 | if (font == NULL)
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nkeynes@736 | 281 | return -1;
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nkeynes@736 | 282 |
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nkeynes@545 | 283 | lists = glGenLists(96);
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nkeynes@545 | 284 | glXUseXFont(font->fid, 32, 96, lists);
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nkeynes@545 | 285 | XFreeFont(video_x11_display, font);
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nkeynes@545 | 286 | return lists;
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nkeynes@545 | 287 | }
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nkeynes@545 | 288 |
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nkeynes@545 | 289 |
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nkeynes@1076 | 290 | static void video_glx_swap_buffers( void )
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nkeynes@545 | 291 | {
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nkeynes@545 | 292 | glXSwapBuffers( video_x11_display, video_x11_window );
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nkeynes@545 | 293 | }
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nkeynes@545 | 294 |
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nkeynes@545 | 295 | void video_glx_make_window_current( void )
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nkeynes@545 | 296 | {
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nkeynes@545 | 297 | glXMakeCurrent( video_x11_display, video_x11_window, glx_context );
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nkeynes@545 | 298 | }
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nkeynes@545 | 299 |
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nkeynes@545 | 300 |
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nkeynes@545 | 301 | // Pbuffer support
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nkeynes@545 | 302 |
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nkeynes@545 | 303 | /**
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nkeynes@545 | 304 | * Construct the initial frame buffers and allocate ids for everything.
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nkeynes@545 | 305 | * The render handling driver methods are set to the fbo versions.
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nkeynes@545 | 306 | */
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nkeynes@545 | 307 | static void glx_pbuffer_init( display_driver_t driver )
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nkeynes@545 | 308 | {
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nkeynes@863 | 309 | GLint stencil_bits = 0;
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nkeynes@863 | 310 |
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nkeynes@863 | 311 | /* Retrieve the number of stencil bits */
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nkeynes@863 | 312 | glGetIntegerv( GL_STENCIL_BITS, &stencil_bits );
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nkeynes@863 | 313 | driver->capabilities.stencil_bits = stencil_bits;
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nkeynes@863 | 314 |
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nkeynes@545 | 315 | glGenTextures( 1, &glx_pbuffer_texture );
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nkeynes@545 | 316 | driver->create_render_buffer = glx_pbuffer_create_render_buffer;
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nkeynes@545 | 317 | driver->destroy_render_buffer = glx_pbuffer_destroy_render_buffer;
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nkeynes@545 | 318 | driver->set_render_target = glx_pbuffer_set_render_target;
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nkeynes@805 | 319 | driver->finish_render = glx_pbuffer_finish_render;
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nkeynes@545 | 320 | driver->display_render_buffer = glx_pbuffer_display_render_buffer;
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nkeynes@545 | 321 | driver->load_frame_buffer = glx_pbuffer_load_frame_buffer;
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nkeynes@545 | 322 | driver->display_blank = glx_pbuffer_display_blank;
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nkeynes@545 | 323 | driver->read_render_buffer = glx_pbuffer_read_render_buffer;
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nkeynes@545 | 324 | }
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nkeynes@545 | 325 |
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nkeynes@545 | 326 | void glx_pbuffer_shutdown()
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nkeynes@545 | 327 | {
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nkeynes@545 | 328 | glDeleteTextures( 1, &glx_pbuffer_texture );
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nkeynes@545 | 329 | }
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nkeynes@545 | 330 |
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nkeynes@805 | 331 | static render_buffer_t glx_pbuffer_create_render_buffer( uint32_t width, uint32_t height, GLuint tex_id )
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nkeynes@545 | 332 | {
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nkeynes@545 | 333 | int attribs[] = { GLX_PBUFFER_WIDTH, width, GLX_PBUFFER_HEIGHT, height,
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nkeynes@736 | 334 | GLX_PRESERVED_CONTENTS, True, 0 };
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nkeynes@545 | 335 | GLXPbuffer pb = glXCreatePbuffer( video_x11_display, glx_fbconfig, attribs );
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nkeynes@545 | 336 | if( pb == (GLXPbuffer)NULL ) {
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nkeynes@736 | 337 | ERROR( "Unable to create pbuffer" );
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nkeynes@736 | 338 | return NULL;
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nkeynes@545 | 339 | }
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nkeynes@545 | 340 | render_buffer_t buffer = calloc( sizeof(struct render_buffer), 1 );
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nkeynes@545 | 341 | buffer->width = width;
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nkeynes@545 | 342 | buffer->height = height;
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nkeynes@545 | 343 | buffer->buf_id = pb;
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nkeynes@805 | 344 | buffer->tex_id = tex_id;
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nkeynes@545 | 345 | return buffer;
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nkeynes@545 | 346 | }
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nkeynes@545 | 347 |
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nkeynes@545 | 348 | static void glx_pbuffer_destroy_render_buffer( render_buffer_t buffer )
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nkeynes@545 | 349 | {
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nkeynes@545 | 350 | glXDestroyPbuffer( video_x11_display, (GLXPbuffer)buffer->buf_id );
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nkeynes@545 | 351 | buffer->buf_id = 0;
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nkeynes@545 | 352 | free( buffer );
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nkeynes@545 | 353 | }
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nkeynes@545 | 354 |
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nkeynes@545 | 355 | static gboolean glx_pbuffer_set_render_target( render_buffer_t buffer )
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nkeynes@545 | 356 | {
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nkeynes@545 | 357 | glFinish();
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nkeynes@545 | 358 | if( glXMakeContextCurrent( video_x11_display, (GLXPbuffer)buffer->buf_id, (GLXPbuffer)buffer->buf_id, glx_context ) == False ) {
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nkeynes@736 | 359 | ERROR( "Make context current (pbuffer) failed!" );
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nkeynes@545 | 360 | }
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nkeynes@545 | 361 | /* setup the gl context */
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nkeynes@545 | 362 | glViewport( 0, 0, buffer->width, buffer->height );
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nkeynes@545 | 363 | glDrawBuffer(GL_FRONT);
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nkeynes@736 | 364 |
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nkeynes@545 | 365 | return TRUE;
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nkeynes@545 | 366 | }
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nkeynes@545 | 367 |
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nkeynes@805 | 368 | static void glx_pbuffer_finish_render( render_buffer_t buffer )
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nkeynes@805 | 369 | {
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nkeynes@805 | 370 | glFinish();
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nkeynes@805 | 371 | if( buffer->tex_id != 0 ) {
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nkeynes@805 | 372 | // The pbuffer should already be the current context, but just in case...
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nkeynes@805 | 373 | glXMakeContextCurrent( video_x11_display, (GLXPbuffer)buffer->buf_id, (GLXPbuffer)buffer->buf_id, glx_context );
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nkeynes@1222 | 374 | glBindTexture( GL_TEXTURE_2D, buffer->tex_id );
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nkeynes@1222 | 375 | glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 0, 0, buffer->width, buffer->height, 0 );
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nkeynes@805 | 376 | }
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nkeynes@805 | 377 | }
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nkeynes@805 | 378 |
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nkeynes@805 | 379 |
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nkeynes@545 | 380 | /**
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nkeynes@545 | 381 | * Render the texture holding the given buffer to the front window
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nkeynes@545 | 382 | * buffer.
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nkeynes@545 | 383 | */
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nkeynes@669 | 384 | static void glx_pbuffer_display_render_buffer( render_buffer_t buffer )
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nkeynes@545 | 385 | {
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nkeynes@545 | 386 | glFinish();
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nkeynes@545 | 387 | glReadBuffer( GL_FRONT );
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nkeynes@545 | 388 | glXMakeContextCurrent( video_x11_display, (GLXPbuffer)buffer->buf_id, (GLXPbuffer)buffer->buf_id, glx_context );
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nkeynes@1222 | 389 | glBindTexture( GL_TEXTURE_2D, glx_pbuffer_texture );
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nkeynes@1222 | 390 | glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 0, 0, buffer->width, buffer->height, 0 );
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nkeynes@545 | 391 | video_glx_make_window_current();
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nkeynes@545 | 392 | gl_texture_window( buffer->width, buffer->height, glx_pbuffer_texture, buffer->inverted );
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nkeynes@545 | 393 | }
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nkeynes@545 | 394 |
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nkeynes@545 | 395 | static void glx_pbuffer_load_frame_buffer( frame_buffer_t frame, render_buffer_t buffer )
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nkeynes@545 | 396 | {
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nkeynes@545 | 397 | glFinish();
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nkeynes@545 | 398 | glXMakeContextCurrent( video_x11_display, (GLXPbuffer)buffer->buf_id, (GLXPbuffer)buffer->buf_id, glx_context );
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nkeynes@545 | 399 | GLenum type = colour_formats[frame->colour_format].type;
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nkeynes@545 | 400 | GLenum format = colour_formats[frame->colour_format].format;
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nkeynes@545 | 401 | int bpp = colour_formats[frame->colour_format].bpp;
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nkeynes@545 | 402 | int rowstride = (frame->rowstride / bpp) - frame->width;
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nkeynes@736 | 403 |
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nkeynes@1246 | 404 | gl_framebuffer_setup();
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nkeynes@545 | 405 | glPixelStorei( GL_UNPACK_ROW_LENGTH, rowstride );
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nkeynes@545 | 406 | glRasterPos2f(0.375, frame->height-0.375);
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nkeynes@545 | 407 | glPixelZoom( 1.0, 1.0 );
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nkeynes@545 | 408 | glDrawPixels( frame->width, frame->height, format, type, frame->data );
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nkeynes@1236 | 409 | glPixelStorei( GL_UNPACK_ROW_LENGTH, 0 );
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nkeynes@545 | 410 | glFlush();
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nkeynes@1246 | 411 | gl_framebuffer_cleanup();
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nkeynes@545 | 412 | }
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nkeynes@545 | 413 |
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nkeynes@669 | 414 | static void glx_pbuffer_display_blank( uint32_t colour )
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nkeynes@545 | 415 | {
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nkeynes@545 | 416 | glFinish();
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nkeynes@545 | 417 | video_glx_make_window_current();
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nkeynes@669 | 418 | gl_display_blank( colour );
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nkeynes@545 | 419 | }
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nkeynes@545 | 420 |
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nkeynes@545 | 421 | static gboolean glx_pbuffer_read_render_buffer( unsigned char *target, render_buffer_t buffer,
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nkeynes@736 | 422 | int rowstride, int format )
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nkeynes@545 | 423 | {
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nkeynes@545 | 424 | glXMakeCurrent( video_x11_display, (GLXDrawable)buffer->buf_id, glx_context );
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nkeynes@545 | 425 | glReadBuffer( GL_FRONT );
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nkeynes@545 | 426 | return gl_read_render_buffer( target, buffer, rowstride, format );
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nkeynes@545 | 427 | }
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nkeynes@545 | 428 |
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nkeynes@545 | 429 |
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