diff options
Diffstat (limited to 'src/gallium/state_trackers/python/st_hardpipe_winsys.c')
| -rw-r--r-- | src/gallium/state_trackers/python/st_hardpipe_winsys.c | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/python/st_hardpipe_winsys.c b/src/gallium/state_trackers/python/st_hardpipe_winsys.c new file mode 100644 index 0000000000..43aaaabf2a --- /dev/null +++ b/src/gallium/state_trackers/python/st_hardpipe_winsys.c @@ -0,0 +1,237 @@ +/************************************************************************** + * + * Copyright 2008 Tungsten Graphics, Inc., Bismarck, ND., USA + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * + **************************************************************************/ + +/** + * @file + * Get a hardware accelerated Gallium screen/context from the OpenGL driver. + */ + + +#include "pipe/p_compiler.h" + +#ifdef PIPE_OS_WINDOWS +#include <windows.h> +#include <GL/gl.h> +#else +#include <X11/Xlib.h> +#include <X11/Xutil.h> +#include <GL/gl.h> +#include <GL/glx.h> +#endif + +#include "st_winsys.h" + + +typedef struct pipe_screen * (GLAPIENTRY *PFNGETGALLIUMSCREENMESAPROC) (void); +typedef struct pipe_context * (GLAPIENTRY* PFNCREATEGALLIUMCONTEXTMESAPROC) (void); + +static PFNGETGALLIUMSCREENMESAPROC pfnGetGalliumScreenMESA = NULL; +static PFNCREATEGALLIUMCONTEXTMESAPROC pfnCreateGalliumContextMESA = NULL; + + +/* XXX: Force init_gallium symbol to be linked */ +extern void init_gallium(void); +void (*force_init_gallium_linkage)(void) = &init_gallium; + + +#ifdef PIPE_OS_WINDOWS + +static INLINE boolean +st_hardpipe_load(void) +{ + WNDCLASS wc; + HWND hwnd; + HGLRC hglrc; + HDC hdc; + PIXELFORMATDESCRIPTOR pfd; + int iPixelFormat; + + if(pfnGetGalliumScreenMESA && pfnCreateGalliumContextMESA) + return TRUE; + + memset(&wc, 0, sizeof wc); + wc.lpfnWndProc = DefWindowProc; + wc.lpszClassName = "gallium"; + wc.style = CS_OWNDC | CS_HREDRAW | CS_VREDRAW; + RegisterClass(&wc); + + hwnd = CreateWindow(wc.lpszClassName, "gallium", 0, 0, 0, 0, 0, NULL, 0, wc.hInstance, NULL); + if (!hwnd) + return FALSE; + + hdc = GetDC(hwnd); + if (!hdc) + return FALSE; + + pfd.cColorBits = 3; + pfd.cRedBits = 1; + pfd.cGreenBits = 1; + pfd.cBlueBits = 1; + pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL; + pfd.iLayerType = PFD_MAIN_PLANE; + pfd.iPixelType = PFD_TYPE_RGBA; + pfd.nSize = sizeof(pfd); + pfd.nVersion = 1; + + iPixelFormat = ChoosePixelFormat(hdc, &pfd); + if (!iPixelFormat) { + pfd.dwFlags |= PFD_DOUBLEBUFFER; + iPixelFormat = ChoosePixelFormat(hdc, &pfd); + } + if (!iPixelFormat) + return FALSE; + + SetPixelFormat(hdc, iPixelFormat, &pfd); + hglrc = wglCreateContext(hdc); + if (!hglrc) + return FALSE; + + if (!wglMakeCurrent(hdc, hglrc)) + return FALSE; + + pfnGetGalliumScreenMESA = (PFNGETGALLIUMSCREENMESAPROC)wglGetProcAddress("wglGetGalliumScreenMESA"); + if(!pfnGetGalliumScreenMESA) + return FALSE; + + pfnCreateGalliumContextMESA = (PFNCREATEGALLIUMCONTEXTMESAPROC)wglGetProcAddress("wglCreateGalliumContextMESA"); + if(!pfnCreateGalliumContextMESA) + return FALSE; + + DestroyWindow(hwnd); + + return TRUE; +} + +#else + +static INLINE boolean +st_hardpipe_load(void) +{ + Display *dpy; + int scrnum; + Window root; + int attribSingle[] = { + GLX_RGBA, + GLX_RED_SIZE, 1, + GLX_GREEN_SIZE, 1, + GLX_BLUE_SIZE, 1, + None }; + int attribDouble[] = { + GLX_RGBA, + GLX_RED_SIZE, 1, + GLX_GREEN_SIZE, 1, + GLX_BLUE_SIZE, 1, + GLX_DOUBLEBUFFER, + None }; + XVisualInfo *visinfo; + GLXContext ctx = NULL; + XSetWindowAttributes attr; + unsigned long mask; + int width = 100, height = 100; + Window win; + + dpy = XOpenDisplay(NULL); + if (!dpy) + return FALSE; + + scrnum = 0; + + root = RootWindow(dpy, scrnum); + + visinfo = glXChooseVisual(dpy, scrnum, attribSingle); + if (!visinfo) + visinfo = glXChooseVisual(dpy, scrnum, attribDouble); + if (!visinfo) + return FALSE; + + ctx = glXCreateContext( dpy, visinfo, NULL, True ); + + if (!ctx) + return FALSE; + + attr.background_pixel = 0; + attr.border_pixel = 0; + attr.colormap = XCreateColormap(dpy, root, visinfo->visual, AllocNone); + attr.event_mask = StructureNotifyMask | ExposureMask; + + mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask; + + win = XCreateWindow(dpy, root, 0, 0, width, height, + 0, visinfo->depth, InputOutput, + visinfo->visual, mask, &attr); + + if (!glXMakeCurrent(dpy, win, ctx)) + return FALSE; + + pfnGetGalliumScreenMESA = (PFNGETGALLIUMSCREENMESAPROC)glXGetProcAddressARB((const GLubyte *)"glXGetGalliumScreenMESA"); + if(!pfnGetGalliumScreenMESA) + return FALSE; + + pfnCreateGalliumContextMESA = (PFNCREATEGALLIUMCONTEXTMESAPROC)glXGetProcAddressARB((const GLubyte *)"glXCreateGalliumContextMESA"); + if(!pfnCreateGalliumContextMESA) + return FALSE; + + glXDestroyContext(dpy, ctx); + XFree(visinfo); + XDestroyWindow(dpy, win); + XCloseDisplay(dpy); + + return TRUE; +} + +#endif + + +static struct pipe_screen * +st_hardpipe_screen_create(void) +{ + if(st_hardpipe_load()) + return pfnGetGalliumScreenMESA(); + else + return st_softpipe_winsys.screen_create(); +} + + +static struct pipe_context * +st_hardpipe_context_create(struct pipe_screen *screen) +{ + if(st_hardpipe_load()) { + if(screen == pfnGetGalliumScreenMESA()) + return pfnCreateGalliumContextMESA(); + else + return NULL; + } + else + return st_softpipe_winsys.context_create(screen); +} + + +const struct st_winsys st_hardpipe_winsys = { + &st_hardpipe_screen_create, + &st_hardpipe_context_create +}; |