From 3ab3209a1f1af7bfd8e09598fbc3586f35169fb2 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Jos=C3=A9=20Fonseca?= Date: Thu, 16 Jul 2009 11:19:06 +0100 Subject: [PATCH] python: Obtain pipe_screen/pipe_context from the system's OpenGL driver. --- src/gallium/state_trackers/python/SConscript | 13 ++ .../python/st_hardpipe_winsys.c | 181 +++++++++++++++++- 2 files changed, 191 insertions(+), 3 deletions(-) diff --git a/src/gallium/state_trackers/python/SConscript b/src/gallium/state_trackers/python/SConscript index 1581182aec2..ec385e7c447 100644 --- a/src/gallium/state_trackers/python/SConscript +++ b/src/gallium/state_trackers/python/SConscript @@ -15,6 +15,19 @@ if 'python' in env['statetrackers']: env.Append(CPPPATH = '.') + if env['platform'] == 'windows': + env.Append(LIBS = [ + 'opengl32', + 'gdi32', + 'user32', + 'kernel32', + ]) + else: + env.Append(LIBS = [ + 'GL', + 'X11', + ]) + pyst = env.ConvenienceLibrary( target = 'pyst', source = [ diff --git a/src/gallium/state_trackers/python/st_hardpipe_winsys.c b/src/gallium/state_trackers/python/st_hardpipe_winsys.c index 8b33c70fd71..43aaaabf2a1 100644 --- a/src/gallium/state_trackers/python/st_hardpipe_winsys.c +++ b/src/gallium/state_trackers/python/st_hardpipe_winsys.c @@ -28,31 +28,206 @@ /** * @file - * Stub for hardware pipe driver support. + * Get a hardware accelerated Gallium screen/context from the OpenGL driver. */ #include "pipe/p_compiler.h" +#ifdef PIPE_OS_WINDOWS +#include +#include +#else +#include +#include +#include +#include +#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) { - return st_softpipe_winsys.screen_create(); + 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) { - return st_softpipe_winsys.context_create(screen); + if(st_hardpipe_load()) { + if(screen == pfnGetGalliumScreenMESA()) + return pfnCreateGalliumContextMESA(); + else + return NULL; + } + else + return st_softpipe_winsys.context_create(screen); } -- 2.30.2