diff options
Diffstat (limited to 'Source/DirectFB/gfxdrivers/gl/gl_gfxdriver.c')
| -rwxr-xr-x | Source/DirectFB/gfxdrivers/gl/gl_gfxdriver.c | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/Source/DirectFB/gfxdrivers/gl/gl_gfxdriver.c b/Source/DirectFB/gfxdrivers/gl/gl_gfxdriver.c new file mode 100755 index 0000000..1f84097 --- /dev/null +++ b/Source/DirectFB/gfxdrivers/gl/gl_gfxdriver.c @@ -0,0 +1,217 @@ +/* + (c) Copyright 2001-2009 The world wide DirectFB Open Source Community (directfb.org) + (c) Copyright 2000-2004 Convergence (integrated media) GmbH + + All rights reserved. + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the + Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. +*/ + +#include <stdio.h> + +#include <directfb.h> + +#include <direct/debug.h> +#include <direct/messages.h> + +#include <core/gfxcard.h> +#include <core/system.h> + +#include <misc/conf.h> + +#include <GL/glx.h> + +#include <x11/x11.h> + +#include "gl_2d.h" +#include "gl_gfxdriver.h" + +D_DEBUG_DOMAIN( GL_Driver, "GL/Driver", "GL graphics driver for X11" ); + +#include <core/graphics_driver.h> + +DFB_GRAPHICS_DRIVER( gl ) + +static int error_code = 0; + +/**********************************************************************************************************************/ + +static int +error_handler( Display *display, XErrorEvent *event ) +{ + char buf[512]; + + XGetErrorText( display, event->error_code, buf, sizeof(buf) ); + + D_ERROR( "GL/Driver: Error! %s\n", buf ); + + error_code = event->error_code; + + return 0; +} + +/**********************************************************************************************************************/ + +static int +driver_probe( CoreGraphicsDevice *device ) +{ + switch (dfb_system_type()) { + case CORE_X11: { + int ee; + DFBX11 *x11 = dfb_system_data(); + + return glXQueryExtension( x11->display, &ee, &ee ); + } + + default: + break; + } + + return 0; +} + +static void +driver_get_info( CoreGraphicsDevice *device, + GraphicsDriverInfo *info ) +{ + /* fill driver info structure */ + snprintf( info->name, + DFB_GRAPHICS_DRIVER_INFO_NAME_LENGTH, + "OpenGL Driver" ); + + snprintf( info->vendor, + DFB_GRAPHICS_DRIVER_INFO_VENDOR_LENGTH, + "Denis Oliver Kropp" ); + + info->version.major = 0; + info->version.minor = 5; + + info->driver_data_size = sizeof(GLDriverData); + info->device_data_size = sizeof(GLDeviceData); +} + +static DFBResult +driver_init_driver( CoreGraphicsDevice *device, + GraphicsDeviceFuncs *funcs, + void *driver_data, + void *device_data, + CoreDFB *core ) +{ + D_DEBUG_AT( GL_Driver, "%s()\n", __FUNCTION__ ); + + /* initialize function pointers */ + funcs->EngineSync = glEngineSync; + funcs->EngineReset = glEngineReset; + funcs->EmitCommands = glEmitCommands; + funcs->CheckState = glCheckState; + funcs->SetState = glSetState; + funcs->FillRectangle = glFillRectangle; + funcs->DrawRectangle = glDrawRectangle; + funcs->DrawLine = glDrawLine; + funcs->FillTriangle = glFillTriangle; + funcs->Blit = glBlit; + funcs->StretchBlit = glStretchBlit; + + /* Choose accelerated font format */ + if (!dfb_config->software_only) { + dfb_config->font_format = DSPF_ARGB; + dfb_config->font_premult = true; + } + + return DFB_OK; +} + +static DFBResult +driver_init_device( CoreGraphicsDevice *device, + GraphicsDeviceInfo *device_info, + void *driver_data, + void *device_data ) +{ + const char *renderer; + Display *display; + XVisualInfo *visual; + GLXContext context; + DFBX11 *x11; + + int attr[] = { + GLX_RGBA, + GLX_RED_SIZE, 1, + GLX_GREEN_SIZE, 1, + GLX_BLUE_SIZE, 1, + None + }; + + D_DEBUG_AT( GL_Driver, "%s()\n", __FUNCTION__ ); + + XSetErrorHandler( error_handler ); + error_code = 0; + + x11 = dfb_system_data(); + + display = x11->display; + + visual = glXChooseVisual( display, DefaultScreen(display), attr ); + if (!visual || error_code) { + D_ERROR( "GL/Driver: Could not find a suitable visual!\n" ); + return DFB_INIT; + } + + context = glXCreateContext( display, visual, NULL, GL_TRUE ); + if (!context || error_code) { + D_ERROR( "GL/Driver: Could not create a context!\n" ); + return DFB_INIT; + } + + glXMakeCurrent( display, RootWindowOfScreen(DefaultScreenOfDisplay(display)), context ); + if( error_code ) + return DFB_INIT; + + renderer = (const char*) glGetString( GL_RENDERER ); + + glXMakeCurrent( display, None, NULL ); + + /* fill device info */ + snprintf( device_info->vendor, DFB_GRAPHICS_DEVICE_INFO_VENDOR_LENGTH, "OpenGL Acceleration -" ); + snprintf( device_info->name, DFB_GRAPHICS_DEVICE_INFO_NAME_LENGTH, "%s", renderer ?: "Unknown" ); + + glXDestroyContext( display, context ); + + /* device limitations */ + device_info->limits.surface_byteoffset_alignment = 8; + device_info->limits.surface_bytepitch_alignment = 8; + + device_info->caps.flags = CCF_CLIPPING | CCF_RENDEROPTS; + device_info->caps.accel = GL_SUPPORTED_DRAWINGFUNCTIONS | + GL_SUPPORTED_BLITTINGFUNCTIONS; + device_info->caps.drawing = GL_SUPPORTED_DRAWINGFLAGS; + device_info->caps.blitting = GL_SUPPORTED_BLITTINGFLAGS; + + return DFB_OK; +} + +static void +driver_close_device( CoreGraphicsDevice *device, + void *driver_data, + void *device_data ) +{ +} + +static void +driver_close_driver( CoreGraphicsDevice *device, + void *driver_data ) +{ +} + |