filename | src/drivers/video_glx.c |
changeset | 635:76c63aac3590 |
prev | 606:23029426ab8f |
next | 639:162ee7614b60 |
author | nkeynes |
date | Thu Feb 14 13:54:11 2008 +0000 (16 years ago) |
branch | lxdream-render |
permissions | -rw-r--r-- |
last change | Commit render work in progress. Main changes: * Preliminary OSMesa support * Move the generic gl code out to pvr2/ * Implement scene data structure + reader * Remove the 1/z adjustments |
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nkeynes@545 | 1 | /** |
nkeynes@586 | 2 | * $Id$ |
nkeynes@545 | 3 | * |
nkeynes@545 | 4 | * Shared functions for all X11-based display drivers. |
nkeynes@545 | 5 | * |
nkeynes@545 | 6 | * Copyright (c) 2005 Nathan Keynes. |
nkeynes@545 | 7 | * |
nkeynes@545 | 8 | * This program is free software; you can redistribute it and/or modify |
nkeynes@545 | 9 | * it under the terms of the GNU General Public License as published by |
nkeynes@545 | 10 | * the Free Software Foundation; either version 2 of the License, or |
nkeynes@545 | 11 | * (at your option) any later version. |
nkeynes@545 | 12 | * |
nkeynes@545 | 13 | * This program is distributed in the hope that it will be useful, |
nkeynes@545 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
nkeynes@545 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
nkeynes@545 | 16 | * GNU General Public License for more details. |
nkeynes@545 | 17 | */ |
nkeynes@545 | 18 | |
nkeynes@635 | 19 | #include <string.h> |
nkeynes@586 | 20 | #include "display.h" |
nkeynes@545 | 21 | #include <X11/Xlib.h> |
nkeynes@545 | 22 | #include <GL/glx.h> |
nkeynes@635 | 23 | #include "pvr2/pvr2.h" |
nkeynes@635 | 24 | #include "pvr2/glutil.h" |
nkeynes@545 | 25 | #include "drivers/video_glx.h" |
nkeynes@635 | 26 | #include "drivers/video_gl.h" |
nkeynes@545 | 27 | |
nkeynes@545 | 28 | /** |
nkeynes@545 | 29 | * General X11 parameters. The front-end driver is expected to set this up |
nkeynes@545 | 30 | * by calling video_glx_init after initializing itself. |
nkeynes@545 | 31 | */ |
nkeynes@545 | 32 | Display *video_x11_display = NULL; |
nkeynes@545 | 33 | Window video_x11_window = 0; |
nkeynes@545 | 34 | static gboolean glsl_loaded = FALSE; |
nkeynes@545 | 35 | |
nkeynes@545 | 36 | static int glx_version = 100; |
nkeynes@606 | 37 | static XVisualInfo *glx_visual = NULL; |
nkeynes@545 | 38 | static GLXFBConfig glx_fbconfig; |
nkeynes@545 | 39 | static GLXContext glx_context = NULL; |
nkeynes@545 | 40 | static gboolean glx_is_initialized = FALSE; |
nkeynes@545 | 41 | static gboolean glx_fbconfig_supported = FALSE; |
nkeynes@545 | 42 | static gboolean glx_pbuffer_supported = FALSE; |
nkeynes@545 | 43 | static int glx_pbuffer_texture = 0; |
nkeynes@545 | 44 | |
nkeynes@545 | 45 | /* Prototypes for pbuffer support methods */ |
nkeynes@545 | 46 | static void glx_pbuffer_init( display_driver_t driver ); |
nkeynes@545 | 47 | static render_buffer_t glx_pbuffer_create_render_buffer( uint32_t width, uint32_t height ); |
nkeynes@545 | 48 | static void glx_pbuffer_destroy_render_buffer( render_buffer_t buffer ); |
nkeynes@545 | 49 | static gboolean glx_pbuffer_set_render_target( render_buffer_t buffer ); |
nkeynes@545 | 50 | static gboolean glx_pbuffer_display_render_buffer( render_buffer_t buffer ); |
nkeynes@545 | 51 | static void glx_pbuffer_load_frame_buffer( frame_buffer_t frame, render_buffer_t buffer ); |
nkeynes@545 | 52 | static gboolean glx_pbuffer_display_blank( uint32_t colour ); |
nkeynes@545 | 53 | static gboolean glx_pbuffer_read_render_buffer( unsigned char *target, render_buffer_t buffer, int rowstride, int format ); |
nkeynes@545 | 54 | |
nkeynes@545 | 55 | /** |
nkeynes@545 | 56 | * Test if a specific extension is supported. From opengl.org |
nkeynes@545 | 57 | * @param extension extension name to check for |
nkeynes@545 | 58 | * @return TRUE if supported, otherwise FALSE. |
nkeynes@545 | 59 | */ |
nkeynes@545 | 60 | gboolean isServerGLXExtensionSupported( Display *display, int screen, |
nkeynes@545 | 61 | const char *extension ) |
nkeynes@545 | 62 | { |
nkeynes@545 | 63 | const char *extensions = NULL; |
nkeynes@545 | 64 | const char *start; |
nkeynes@545 | 65 | char *where, *terminator; |
nkeynes@545 | 66 | |
nkeynes@545 | 67 | /* Extension names should not have spaces. */ |
nkeynes@545 | 68 | where = strchr(extension, ' '); |
nkeynes@545 | 69 | if (where || *extension == '\0') |
nkeynes@545 | 70 | return 0; |
nkeynes@545 | 71 | extensions = glXQueryServerString(display, screen, GLX_EXTENSIONS); |
nkeynes@545 | 72 | start = extensions; |
nkeynes@545 | 73 | for (;;) { |
nkeynes@545 | 74 | where = strstr((const char *) start, extension); |
nkeynes@545 | 75 | if (!where) |
nkeynes@545 | 76 | break; |
nkeynes@545 | 77 | terminator = where + strlen(extension); |
nkeynes@545 | 78 | if (where == start || *(where - 1) == ' ') |
nkeynes@545 | 79 | if (*terminator == ' ' || *terminator == '\0') |
nkeynes@545 | 80 | return TRUE; |
nkeynes@545 | 81 | start = terminator; |
nkeynes@545 | 82 | } |
nkeynes@545 | 83 | return FALSE; |
nkeynes@545 | 84 | } |
nkeynes@545 | 85 | |
nkeynes@545 | 86 | gboolean video_glx_init( Display *display, int screen ) |
nkeynes@545 | 87 | { |
nkeynes@545 | 88 | int major, minor; |
nkeynes@545 | 89 | |
nkeynes@545 | 90 | if( glx_is_initialized ) { |
nkeynes@545 | 91 | return TRUE; |
nkeynes@545 | 92 | } |
nkeynes@545 | 93 | |
nkeynes@545 | 94 | Bool result = glXQueryVersion( display, &major, &minor ); |
nkeynes@545 | 95 | if( result != False ) { |
nkeynes@545 | 96 | glx_version = (major*100) + minor; |
nkeynes@545 | 97 | } |
nkeynes@545 | 98 | |
nkeynes@545 | 99 | glx_fbconfig_supported = (glx_version >= 103 || |
nkeynes@545 | 100 | isServerGLXExtensionSupported(display, screen, |
nkeynes@545 | 101 | "GLX_SGIX_fbconfig") ); |
nkeynes@545 | 102 | glx_pbuffer_supported = (glx_version >= 103 || |
nkeynes@545 | 103 | isServerGLXExtensionSupported(display, screen, |
nkeynes@545 | 104 | "GLX_SGIX_pbuffer") ); |
nkeynes@606 | 105 | |
nkeynes@545 | 106 | if( glx_fbconfig_supported ) { |
nkeynes@545 | 107 | int nelem; |
nkeynes@545 | 108 | int fb_attribs[] = { GLX_DRAWABLE_TYPE, |
nkeynes@545 | 109 | GLX_PBUFFER_BIT|GLX_WINDOW_BIT, |
nkeynes@545 | 110 | GLX_RENDER_TYPE, GLX_RGBA_BIT, |
nkeynes@545 | 111 | GLX_DEPTH_SIZE, 24, 0 }; |
nkeynes@545 | 112 | GLXFBConfig *configs = glXChooseFBConfig( display, screen, |
nkeynes@545 | 113 | fb_attribs, &nelem ); |
nkeynes@545 | 114 | |
nkeynes@545 | 115 | if( configs == NULL || nelem == 0 ) { |
nkeynes@545 | 116 | /* Didn't work. Fallback to 1.2 methods */ |
nkeynes@545 | 117 | glx_fbconfig_supported = FALSE; |
nkeynes@545 | 118 | glx_pbuffer_supported = FALSE; |
nkeynes@545 | 119 | } else { |
nkeynes@545 | 120 | glx_fbconfig = configs[0]; |
nkeynes@545 | 121 | glx_visual = glXGetVisualFromFBConfig(display, glx_fbconfig); |
nkeynes@545 | 122 | XFree(configs); |
nkeynes@545 | 123 | } |
nkeynes@545 | 124 | } |
nkeynes@545 | 125 | |
nkeynes@545 | 126 | if( !glx_fbconfig_supported ) { |
nkeynes@545 | 127 | int attribs[] = { GLX_RGBA, GLX_DEPTH_SIZE, 24, 0 }; |
nkeynes@545 | 128 | glx_visual = glXChooseVisual( display, screen, attribs ); |
nkeynes@545 | 129 | } |
nkeynes@606 | 130 | |
nkeynes@606 | 131 | if( glx_visual == NULL ) { |
nkeynes@606 | 132 | return FALSE; |
nkeynes@606 | 133 | } |
nkeynes@606 | 134 | |
nkeynes@545 | 135 | glx_is_initialized = TRUE; |
nkeynes@545 | 136 | return TRUE; |
nkeynes@545 | 137 | } |
nkeynes@545 | 138 | |
nkeynes@545 | 139 | gboolean video_glx_init_context( Display *display, Window window ) |
nkeynes@545 | 140 | { |
nkeynes@545 | 141 | if( glx_fbconfig_supported ) { |
nkeynes@545 | 142 | glx_context = glXCreateNewContext( display, glx_fbconfig, |
nkeynes@545 | 143 | GLX_RGBA_TYPE, NULL, True ); |
nkeynes@545 | 144 | if( glx_context == NULL ) { |
nkeynes@545 | 145 | ERROR( "Unable to create a GLX Context."); |
nkeynes@545 | 146 | return FALSE; |
nkeynes@545 | 147 | } |
nkeynes@545 | 148 | |
nkeynes@545 | 149 | if( glXMakeContextCurrent( display, window, window, |
nkeynes@545 | 150 | glx_context ) == False ) { |
nkeynes@545 | 151 | ERROR( "Unable to prepare GLX context for drawing" ); |
nkeynes@545 | 152 | glXDestroyContext( display, glx_context ); |
nkeynes@545 | 153 | return FALSE; |
nkeynes@545 | 154 | } |
nkeynes@545 | 155 | } else { |
nkeynes@545 | 156 | glx_context = glXCreateContext( display, glx_visual, None, True ); |
nkeynes@545 | 157 | if( glx_context == NULL ) { |
nkeynes@545 | 158 | ERROR( "Unable to create a GLX Context."); |
nkeynes@545 | 159 | return FALSE; |
nkeynes@545 | 160 | } |
nkeynes@545 | 161 | |
nkeynes@545 | 162 | if( glXMakeCurrent( display, window, glx_context ) == False ) { |
nkeynes@545 | 163 | ERROR( "Unable to prepare GLX context for drawing" ); |
nkeynes@545 | 164 | glXDestroyContext( display, glx_context ); |
nkeynes@545 | 165 | return FALSE; |
nkeynes@545 | 166 | } |
nkeynes@545 | 167 | } |
nkeynes@545 | 168 | |
nkeynes@545 | 169 | if( !glXIsDirect(display, glx_context) ) { |
nkeynes@545 | 170 | WARN( "Not using direct rendering - this is likely to be slow" ); |
nkeynes@545 | 171 | } |
nkeynes@545 | 172 | |
nkeynes@635 | 173 | if( glsl_is_supported() ) { |
nkeynes@635 | 174 | //if( !glsl_load_shaders( glsl_vertex_shader_src, glsl_fragment_shader_src ) ) { |
nkeynes@635 | 175 | if( !glsl_load_shaders( glsl_vertex_shader_src, NULL ) ) { |
nkeynes@635 | 176 | WARN( "Unable to load GL shaders" ); |
nkeynes@635 | 177 | } |
nkeynes@635 | 178 | } |
nkeynes@635 | 179 | |
nkeynes@545 | 180 | texcache_gl_init(); |
nkeynes@545 | 181 | video_x11_display = display; |
nkeynes@545 | 182 | video_x11_window = window; |
nkeynes@545 | 183 | |
nkeynes@545 | 184 | return TRUE; |
nkeynes@545 | 185 | } |
nkeynes@545 | 186 | |
nkeynes@545 | 187 | gboolean video_glx_init_driver( display_driver_t driver ) |
nkeynes@545 | 188 | { |
nkeynes@545 | 189 | if( gl_fbo_is_supported() ) { // First preference |
nkeynes@545 | 190 | gl_fbo_init(driver); |
nkeynes@545 | 191 | } else if( glx_pbuffer_supported ) { |
nkeynes@545 | 192 | glx_pbuffer_init(driver); |
nkeynes@545 | 193 | } else { |
nkeynes@545 | 194 | ERROR( "Unable to create render buffers (requires either EXT_framebuffer_object or GLX 1.3+)" ); |
nkeynes@545 | 195 | video_glx_shutdown(); |
nkeynes@545 | 196 | return FALSE; |
nkeynes@545 | 197 | } |
nkeynes@545 | 198 | return TRUE; |
nkeynes@545 | 199 | } |
nkeynes@545 | 200 | |
nkeynes@545 | 201 | |
nkeynes@545 | 202 | void video_glx_shutdown() |
nkeynes@545 | 203 | { |
nkeynes@545 | 204 | // texcache_gl_shutdown(); |
nkeynes@545 | 205 | glx_is_initialized = FALSE; |
nkeynes@545 | 206 | if( glx_context != NULL ) { |
nkeynes@545 | 207 | glXDestroyContext( video_x11_display, glx_context ); |
nkeynes@545 | 208 | glx_context = NULL; |
nkeynes@545 | 209 | } |
nkeynes@545 | 210 | if( glx_visual != NULL ) { |
nkeynes@545 | 211 | XFree(glx_visual); |
nkeynes@545 | 212 | glx_visual = NULL; |
nkeynes@545 | 213 | } |
nkeynes@545 | 214 | } |
nkeynes@545 | 215 | |
nkeynes@545 | 216 | |
nkeynes@545 | 217 | XVisualInfo *video_glx_get_visual() |
nkeynes@545 | 218 | { |
nkeynes@545 | 219 | return glx_visual; |
nkeynes@545 | 220 | } |
nkeynes@545 | 221 | |
nkeynes@545 | 222 | |
nkeynes@545 | 223 | int video_glx_load_font( const gchar *font_name ) |
nkeynes@545 | 224 | { |
nkeynes@545 | 225 | int lists; |
nkeynes@545 | 226 | XFontStruct *font = XLoadQueryFont(video_x11_display, font_name ); |
nkeynes@545 | 227 | if (font == NULL) |
nkeynes@545 | 228 | return -1; |
nkeynes@545 | 229 | |
nkeynes@545 | 230 | lists = glGenLists(96); |
nkeynes@545 | 231 | glXUseXFont(font->fid, 32, 96, lists); |
nkeynes@545 | 232 | XFreeFont(video_x11_display, font); |
nkeynes@545 | 233 | return lists; |
nkeynes@545 | 234 | } |
nkeynes@545 | 235 | |
nkeynes@545 | 236 | |
nkeynes@545 | 237 | void video_glx_swap_buffers( void ) |
nkeynes@545 | 238 | { |
nkeynes@545 | 239 | glXSwapBuffers( video_x11_display, video_x11_window ); |
nkeynes@545 | 240 | } |
nkeynes@545 | 241 | |
nkeynes@545 | 242 | void video_glx_make_window_current( void ) |
nkeynes@545 | 243 | { |
nkeynes@545 | 244 | glXMakeCurrent( video_x11_display, video_x11_window, glx_context ); |
nkeynes@545 | 245 | } |
nkeynes@545 | 246 | |
nkeynes@545 | 247 | |
nkeynes@545 | 248 | // Pbuffer support |
nkeynes@545 | 249 | |
nkeynes@545 | 250 | /** |
nkeynes@545 | 251 | * Construct the initial frame buffers and allocate ids for everything. |
nkeynes@545 | 252 | * The render handling driver methods are set to the fbo versions. |
nkeynes@545 | 253 | */ |
nkeynes@545 | 254 | static void glx_pbuffer_init( display_driver_t driver ) |
nkeynes@545 | 255 | { |
nkeynes@545 | 256 | glGenTextures( 1, &glx_pbuffer_texture ); |
nkeynes@545 | 257 | driver->create_render_buffer = glx_pbuffer_create_render_buffer; |
nkeynes@545 | 258 | driver->destroy_render_buffer = glx_pbuffer_destroy_render_buffer; |
nkeynes@545 | 259 | driver->set_render_target = glx_pbuffer_set_render_target; |
nkeynes@545 | 260 | driver->display_render_buffer = glx_pbuffer_display_render_buffer; |
nkeynes@545 | 261 | driver->load_frame_buffer = glx_pbuffer_load_frame_buffer; |
nkeynes@545 | 262 | driver->display_blank = glx_pbuffer_display_blank; |
nkeynes@545 | 263 | driver->read_render_buffer = glx_pbuffer_read_render_buffer; |
nkeynes@545 | 264 | } |
nkeynes@545 | 265 | |
nkeynes@545 | 266 | void glx_pbuffer_shutdown() |
nkeynes@545 | 267 | { |
nkeynes@545 | 268 | glDeleteTextures( 1, &glx_pbuffer_texture ); |
nkeynes@545 | 269 | } |
nkeynes@545 | 270 | |
nkeynes@545 | 271 | static render_buffer_t glx_pbuffer_create_render_buffer( uint32_t width, uint32_t height ) |
nkeynes@545 | 272 | { |
nkeynes@545 | 273 | int attribs[] = { GLX_PBUFFER_WIDTH, width, GLX_PBUFFER_HEIGHT, height, |
nkeynes@545 | 274 | GLX_PRESERVED_CONTENTS, True, 0 }; |
nkeynes@545 | 275 | GLXPbuffer pb = glXCreatePbuffer( video_x11_display, glx_fbconfig, attribs ); |
nkeynes@545 | 276 | if( pb == (GLXPbuffer)NULL ) { |
nkeynes@545 | 277 | ERROR( "Unable to create pbuffer" ); |
nkeynes@545 | 278 | return NULL; |
nkeynes@545 | 279 | } |
nkeynes@545 | 280 | render_buffer_t buffer = calloc( sizeof(struct render_buffer), 1 ); |
nkeynes@545 | 281 | buffer->width = width; |
nkeynes@545 | 282 | buffer->height = height; |
nkeynes@545 | 283 | buffer->buf_id = pb; |
nkeynes@545 | 284 | return buffer; |
nkeynes@545 | 285 | } |
nkeynes@545 | 286 | |
nkeynes@545 | 287 | static void glx_pbuffer_destroy_render_buffer( render_buffer_t buffer ) |
nkeynes@545 | 288 | { |
nkeynes@545 | 289 | glXDestroyPbuffer( video_x11_display, (GLXPbuffer)buffer->buf_id ); |
nkeynes@545 | 290 | buffer->buf_id = 0; |
nkeynes@545 | 291 | free( buffer ); |
nkeynes@545 | 292 | } |
nkeynes@545 | 293 | |
nkeynes@545 | 294 | static gboolean glx_pbuffer_set_render_target( render_buffer_t buffer ) |
nkeynes@545 | 295 | { |
nkeynes@545 | 296 | glFinish(); |
nkeynes@545 | 297 | if( glXMakeContextCurrent( video_x11_display, (GLXPbuffer)buffer->buf_id, (GLXPbuffer)buffer->buf_id, glx_context ) == False ) { |
nkeynes@545 | 298 | ERROR( "Make context current (pbuffer) failed!" ); |
nkeynes@545 | 299 | } |
nkeynes@545 | 300 | /* setup the gl context */ |
nkeynes@545 | 301 | glViewport( 0, 0, buffer->width, buffer->height ); |
nkeynes@545 | 302 | glDrawBuffer(GL_FRONT); |
nkeynes@545 | 303 | |
nkeynes@545 | 304 | return TRUE; |
nkeynes@545 | 305 | } |
nkeynes@545 | 306 | |
nkeynes@545 | 307 | /** |
nkeynes@545 | 308 | * Render the texture holding the given buffer to the front window |
nkeynes@545 | 309 | * buffer. |
nkeynes@545 | 310 | */ |
nkeynes@545 | 311 | static gboolean glx_pbuffer_display_render_buffer( render_buffer_t buffer ) |
nkeynes@545 | 312 | { |
nkeynes@545 | 313 | glFinish(); |
nkeynes@545 | 314 | glReadBuffer( GL_FRONT ); |
nkeynes@545 | 315 | glDrawBuffer( GL_FRONT ); |
nkeynes@545 | 316 | glXMakeContextCurrent( video_x11_display, (GLXPbuffer)buffer->buf_id, (GLXPbuffer)buffer->buf_id, glx_context ); |
nkeynes@545 | 317 | glBindTexture( GL_TEXTURE_RECTANGLE_ARB, glx_pbuffer_texture ); |
nkeynes@545 | 318 | glCopyTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA, 0, 0, buffer->width, buffer->height, 0 ); |
nkeynes@545 | 319 | video_glx_make_window_current(); |
nkeynes@545 | 320 | gl_texture_window( buffer->width, buffer->height, glx_pbuffer_texture, buffer->inverted ); |
nkeynes@545 | 321 | return TRUE; |
nkeynes@545 | 322 | } |
nkeynes@545 | 323 | |
nkeynes@545 | 324 | static void glx_pbuffer_load_frame_buffer( frame_buffer_t frame, render_buffer_t buffer ) |
nkeynes@545 | 325 | { |
nkeynes@545 | 326 | glFinish(); |
nkeynes@545 | 327 | glXMakeContextCurrent( video_x11_display, (GLXPbuffer)buffer->buf_id, (GLXPbuffer)buffer->buf_id, glx_context ); |
nkeynes@545 | 328 | GLenum type = colour_formats[frame->colour_format].type; |
nkeynes@545 | 329 | GLenum format = colour_formats[frame->colour_format].format; |
nkeynes@545 | 330 | int bpp = colour_formats[frame->colour_format].bpp; |
nkeynes@545 | 331 | int rowstride = (frame->rowstride / bpp) - frame->width; |
nkeynes@545 | 332 | |
nkeynes@545 | 333 | gl_reset_state(); |
nkeynes@545 | 334 | glPixelStorei( GL_UNPACK_ROW_LENGTH, rowstride ); |
nkeynes@545 | 335 | glRasterPos2f(0.375, frame->height-0.375); |
nkeynes@545 | 336 | glPixelZoom( 1.0, 1.0 ); |
nkeynes@545 | 337 | glDrawPixels( frame->width, frame->height, format, type, frame->data ); |
nkeynes@545 | 338 | glFlush(); |
nkeynes@545 | 339 | } |
nkeynes@545 | 340 | |
nkeynes@545 | 341 | static gboolean glx_pbuffer_display_blank( uint32_t colour ) |
nkeynes@545 | 342 | { |
nkeynes@545 | 343 | glFinish(); |
nkeynes@545 | 344 | video_glx_make_window_current(); |
nkeynes@545 | 345 | return gl_display_blank( colour ); |
nkeynes@545 | 346 | } |
nkeynes@545 | 347 | |
nkeynes@545 | 348 | static gboolean glx_pbuffer_read_render_buffer( unsigned char *target, render_buffer_t buffer, |
nkeynes@545 | 349 | int rowstride, int format ) |
nkeynes@545 | 350 | { |
nkeynes@545 | 351 | glXMakeCurrent( video_x11_display, (GLXDrawable)buffer->buf_id, glx_context ); |
nkeynes@545 | 352 | glReadBuffer( GL_FRONT ); |
nkeynes@545 | 353 | return gl_read_render_buffer( target, buffer, rowstride, format ); |
nkeynes@545 | 354 | } |
nkeynes@545 | 355 | |
nkeynes@545 | 356 |
.