/* Window-specific OpenGL functions implementation. * * Copyright (c) 1999 Lionel Ulmer * Copyright (c) 2005 Raphael Junqueira * * 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 2.1 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ #include "config.h" #include "wine/port.h" #include #include #include #include "windef.h" #include "winbase.h" #include "winuser.h" #include "winreg.h" #include "wingdi.h" #include "winternl.h" #include "winnt.h" #include "opengl_ext.h" #include "wine/gdi_driver.h" #include "wine/glu.h" #include "wine/debug.h" WINE_DEFAULT_DEBUG_CHANNEL(wgl); WINE_DECLARE_DEBUG_CHANNEL(fps); /* handle management */ #define MAX_WGL_HANDLES 1024 enum wgl_handle_type { HANDLE_PBUFFER = 0 << 12, HANDLE_CONTEXT = 1 << 12, HANDLE_CONTEXT_V3 = 3 << 12, HANDLE_TYPE_MASK = 15 << 12 }; struct opengl_context { DWORD tid; /* thread that the context is current in */ HDC draw_dc; /* current drawing DC */ HDC read_dc; /* current reading DC */ GLubyte *extensions; /* extension string */ GLuint *disabled_exts; /* indices of disabled extensions */ struct wgl_context *drv_ctx; /* driver context */ }; struct wgl_handle { UINT handle; struct opengl_funcs *funcs; union { struct opengl_context *context; /* for HANDLE_CONTEXT */ struct wgl_pbuffer *pbuffer; /* for HANDLE_PBUFFER */ struct wgl_handle *next; /* for free handles */ } u; }; static struct wgl_handle wgl_handles[MAX_WGL_HANDLES]; static struct wgl_handle *next_free; static unsigned int handle_count; static CRITICAL_SECTION wgl_section; static CRITICAL_SECTION_DEBUG critsect_debug = { 0, 0, &wgl_section, { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList }, 0, 0, { (DWORD_PTR)(__FILE__ ": wgl_section") } }; static CRITICAL_SECTION wgl_section = { &critsect_debug, -1, 0, 0, 0, 0 }; static const MAT2 identity = { {0,1},{0,0},{0,0},{0,1} }; static inline HANDLE next_handle( struct wgl_handle *ptr, enum wgl_handle_type type ) { WORD generation = HIWORD( ptr->handle ) + 1; if (!generation) generation++; ptr->handle = MAKELONG( ptr - wgl_handles, generation ) | type; return ULongToHandle( ptr->handle ); } /* the current context is assumed valid and doesn't need locking */ static inline struct wgl_handle *get_current_context_ptr(void) { if (!NtCurrentTeb()->glCurrentRC) return NULL; return &wgl_handles[LOWORD(NtCurrentTeb()->glCurrentRC) & ~HANDLE_TYPE_MASK]; } static struct wgl_handle *get_handle_ptr( HANDLE handle, enum wgl_handle_type type ) { unsigned int index = LOWORD( handle ) & ~HANDLE_TYPE_MASK; EnterCriticalSection( &wgl_section ); if (index < handle_count && ULongToHandle(wgl_handles[index].handle) == handle) return &wgl_handles[index]; LeaveCriticalSection( &wgl_section ); SetLastError( ERROR_INVALID_HANDLE ); return NULL; } static void release_handle_ptr( struct wgl_handle *ptr ) { if (ptr) LeaveCriticalSection( &wgl_section ); } static HANDLE alloc_handle( enum wgl_handle_type type, struct opengl_funcs *funcs, void *user_ptr ) { HANDLE handle = 0; struct wgl_handle *ptr = NULL; EnterCriticalSection( &wgl_section ); if ((ptr = next_free)) next_free = next_free->u.next; else if (handle_count < MAX_WGL_HANDLES) ptr = &wgl_handles[handle_count++]; if (ptr) { ptr->funcs = funcs; ptr->u.context = user_ptr; handle = next_handle( ptr, type ); } else SetLastError( ERROR_NOT_ENOUGH_MEMORY ); LeaveCriticalSection( &wgl_section ); return handle; } static void free_handle_ptr( struct wgl_handle *ptr ) { ptr->handle |= 0xffff; ptr->u.next = next_free; ptr->funcs = NULL; next_free = ptr; LeaveCriticalSection( &wgl_section ); } static inline enum wgl_handle_type get_current_context_type(void) { if (!NtCurrentTeb()->glCurrentRC) return HANDLE_CONTEXT; return LOWORD(NtCurrentTeb()->glCurrentRC) & HANDLE_TYPE_MASK; } /*********************************************************************** * wglCopyContext (OPENGL32.@) */ BOOL WINAPI wglCopyContext(HGLRC hglrcSrc, HGLRC hglrcDst, UINT mask) { struct wgl_handle *src, *dst; BOOL ret = FALSE; if (!(src = get_handle_ptr( hglrcSrc, HANDLE_CONTEXT ))) return FALSE; if ((dst = get_handle_ptr( hglrcDst, HANDLE_CONTEXT ))) { if (src->funcs != dst->funcs) SetLastError( ERROR_INVALID_HANDLE ); else ret = src->funcs->wgl.p_wglCopyContext( src->u.context->drv_ctx, dst->u.context->drv_ctx, mask ); } release_handle_ptr( dst ); release_handle_ptr( src ); return ret; } /*********************************************************************** * wglDeleteContext (OPENGL32.@) */ BOOL WINAPI wglDeleteContext(HGLRC hglrc) { struct wgl_handle *ptr = get_handle_ptr( hglrc, HANDLE_CONTEXT ); if (!ptr) return FALSE; if (ptr->u.context->tid && ptr->u.context->tid != GetCurrentThreadId()) { SetLastError( ERROR_BUSY ); release_handle_ptr( ptr ); return FALSE; } if (hglrc == NtCurrentTeb()->glCurrentRC) wglMakeCurrent( 0, 0 ); ptr->funcs->wgl.p_wglDeleteContext( ptr->u.context->drv_ctx ); HeapFree( GetProcessHeap(), 0, ptr->u.context->disabled_exts ); HeapFree( GetProcessHeap(), 0, ptr->u.context->extensions ); HeapFree( GetProcessHeap(), 0, ptr->u.context ); free_handle_ptr( ptr ); return TRUE; } /*********************************************************************** * wglMakeCurrent (OPENGL32.@) */ BOOL WINAPI wglMakeCurrent(HDC hdc, HGLRC hglrc) { BOOL ret = TRUE; struct wgl_handle *ptr, *prev = get_current_context_ptr(); if (hglrc) { if (!(ptr = get_handle_ptr( hglrc, HANDLE_CONTEXT ))) return FALSE; if (!ptr->u.context->tid || ptr->u.context->tid == GetCurrentThreadId()) { ret = ptr->funcs->wgl.p_wglMakeCurrent( hdc, ptr->u.context->drv_ctx ); if (ret) { if (prev) prev->u.context->tid = 0; ptr->u.context->tid = GetCurrentThreadId(); ptr->u.context->draw_dc = hdc; ptr->u.context->read_dc = hdc; NtCurrentTeb()->glCurrentRC = hglrc; NtCurrentTeb()->glTable = ptr->funcs; } } else { SetLastError( ERROR_BUSY ); ret = FALSE; } release_handle_ptr( ptr ); } else if (prev) { if (!prev->funcs->wgl.p_wglMakeCurrent( 0, NULL )) return FALSE; prev->u.context->tid = 0; NtCurrentTeb()->glCurrentRC = 0; NtCurrentTeb()->glTable = &null_opengl_funcs; } else if (!hdc) { SetLastError( ERROR_INVALID_HANDLE ); ret = FALSE; } return ret; } /*********************************************************************** * wglCreateContextAttribsARB * * Provided by the WGL_ARB_create_context extension. */ HGLRC WINAPI wglCreateContextAttribsARB( HDC hdc, HGLRC share, const int *attribs ) { HGLRC ret = 0; struct wgl_context *drv_ctx; struct wgl_handle *share_ptr = NULL; struct opengl_context *context; struct opengl_funcs *funcs = get_dc_funcs( hdc ); if (!funcs) { SetLastError( ERROR_DC_NOT_FOUND ); return 0; } if (!funcs->ext.p_wglCreateContextAttribsARB) return 0; if (share && !(share_ptr = get_handle_ptr( share, HANDLE_CONTEXT ))) { SetLastError( ERROR_INVALID_OPERATION ); return 0; } if ((drv_ctx = funcs->ext.p_wglCreateContextAttribsARB( hdc, share_ptr ? share_ptr->u.context->drv_ctx : NULL, attribs ))) { if ((context = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*context) ))) { enum wgl_handle_type type = HANDLE_CONTEXT; if (attribs) { while (*attribs) { if (attribs[0] == WGL_CONTEXT_MAJOR_VERSION_ARB) { if (attribs[1] >= 3) type = HANDLE_CONTEXT_V3; break; } attribs += 2; } } context->drv_ctx = drv_ctx; if (!(ret = alloc_handle( type, funcs, context ))) HeapFree( GetProcessHeap(), 0, context ); } if (!ret) funcs->wgl.p_wglDeleteContext( drv_ctx ); } release_handle_ptr( share_ptr ); return ret; } /*********************************************************************** * wglMakeContextCurrentARB * * Provided by the WGL_ARB_make_current_read extension. */ BOOL WINAPI wglMakeContextCurrentARB( HDC draw_hdc, HDC read_hdc, HGLRC hglrc ) { BOOL ret = TRUE; struct wgl_handle *ptr, *prev = get_current_context_ptr(); if (hglrc) { if (!(ptr = get_handle_ptr( hglrc, HANDLE_CONTEXT ))) return FALSE; if (!ptr->u.context->tid || ptr->u.context->tid == GetCurrentThreadId()) { ret = (ptr->funcs->ext.p_wglMakeContextCurrentARB && ptr->funcs->ext.p_wglMakeContextCurrentARB( draw_hdc, read_hdc, ptr->u.context->drv_ctx )); if (ret) { if (prev) prev->u.context->tid = 0; ptr->u.context->tid = GetCurrentThreadId(); ptr->u.context->draw_dc = draw_hdc; ptr->u.context->read_dc = read_hdc; NtCurrentTeb()->glCurrentRC = hglrc; NtCurrentTeb()->glTable = ptr->funcs; } } else { SetLastError( ERROR_BUSY ); ret = FALSE; } release_handle_ptr( ptr ); } else if (prev) { if (!prev->funcs->wgl.p_wglMakeCurrent( 0, NULL )) return FALSE; prev->u.context->tid = 0; NtCurrentTeb()->glCurrentRC = 0; NtCurrentTeb()->glTable = &null_opengl_funcs; } return ret; } /*********************************************************************** * wglGetCurrentReadDCARB * * Provided by the WGL_ARB_make_current_read extension. */ HDC WINAPI wglGetCurrentReadDCARB(void) { struct wgl_handle *ptr = get_current_context_ptr(); if (!ptr) return 0; return ptr->u.context->read_dc; } /*********************************************************************** * wglShareLists (OPENGL32.@) */ BOOL WINAPI wglShareLists(HGLRC hglrcSrc, HGLRC hglrcDst) { BOOL ret = FALSE; struct wgl_handle *src, *dst; if (!(src = get_handle_ptr( hglrcSrc, HANDLE_CONTEXT ))) return FALSE; if ((dst = get_handle_ptr( hglrcDst, HANDLE_CONTEXT ))) { if (src->funcs != dst->funcs) SetLastError( ERROR_INVALID_HANDLE ); else ret = src->funcs->wgl.p_wglShareLists( src->u.context->drv_ctx, dst->u.context->drv_ctx ); } release_handle_ptr( dst ); release_handle_ptr( src ); return ret; } /*********************************************************************** * wglGetCurrentDC (OPENGL32.@) */ HDC WINAPI wglGetCurrentDC(void) { struct wgl_handle *ptr = get_current_context_ptr(); if (!ptr) return 0; return ptr->u.context->draw_dc; } /*********************************************************************** * wglCreateContext (OPENGL32.@) */ HGLRC WINAPI wglCreateContext(HDC hdc) { HGLRC ret = 0; struct wgl_context *drv_ctx; struct opengl_context *context; struct opengl_funcs *funcs = get_dc_funcs( hdc ); if (!funcs) return 0; if (!(drv_ctx = funcs->wgl.p_wglCreateContext( hdc ))) return 0; if ((context = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*context) ))) { context->drv_ctx = drv_ctx; if (!(ret = alloc_handle( HANDLE_CONTEXT, funcs, context ))) HeapFree( GetProcessHeap(), 0, context ); } if (!ret) funcs->wgl.p_wglDeleteContext( drv_ctx ); return ret; } /*********************************************************************** * wglGetCurrentContext (OPENGL32.@) */ HGLRC WINAPI wglGetCurrentContext(void) { return NtCurrentTeb()->glCurrentRC; } /*********************************************************************** * wglDescribePixelFormat (OPENGL32.@) */ INT WINAPI wglDescribePixelFormat(HDC hdc, INT format, UINT size, PIXELFORMATDESCRIPTOR *descr ) { struct opengl_funcs *funcs = get_dc_funcs( hdc ); if (!funcs) return 0; return funcs->wgl.p_wglDescribePixelFormat( hdc, format, size, descr ); } /*********************************************************************** * wglChoosePixelFormat (OPENGL32.@) */ INT WINAPI wglChoosePixelFormat(HDC hdc, const PIXELFORMATDESCRIPTOR* ppfd) { PIXELFORMATDESCRIPTOR format, best; int i, count, best_format; int bestDBuffer = -1, bestStereo = -1; TRACE_(wgl)( "%p %p: size %u version %u flags %u type %u color %u %u,%u,%u,%u " "accum %u depth %u stencil %u aux %u\n", hdc, ppfd, ppfd->nSize, ppfd->nVersion, ppfd->dwFlags, ppfd->iPixelType, ppfd->cColorBits, ppfd->cRedBits, ppfd->cGreenBits, ppfd->cBlueBits, ppfd->cAlphaBits, ppfd->cAccumBits, ppfd->cDepthBits, ppfd->cStencilBits, ppfd->cAuxBuffers ); count = wglDescribePixelFormat( hdc, 0, 0, NULL ); if (!count) return 0; best_format = 0; best.dwFlags = 0; best.cAlphaBits = -1; best.cColorBits = -1; best.cDepthBits = -1; best.cStencilBits = -1; best.cAuxBuffers = -1; for (i = 1; i <= count; i++) { if (!wglDescribePixelFormat( hdc, i, sizeof(format), &format )) continue; if (ppfd->iPixelType != format.iPixelType) { TRACE( "pixel type mismatch for iPixelFormat=%d\n", i ); continue; } /* only use bitmap capable for formats for bitmap rendering */ if( (ppfd->dwFlags & PFD_DRAW_TO_BITMAP) != (format.dwFlags & PFD_DRAW_TO_BITMAP)) { TRACE( "PFD_DRAW_TO_BITMAP mismatch for iPixelFormat=%d\n", i ); continue; } /* The behavior of PDF_STEREO/PFD_STEREO_DONTCARE and PFD_DOUBLEBUFFER / PFD_DOUBLEBUFFER_DONTCARE * is not very clear on MSDN. They specify that ChoosePixelFormat tries to match pixel formats * with the flag (PFD_STEREO / PFD_DOUBLEBUFFERING) set. Otherwise it says that it tries to match * formats without the given flag set. * A test on Windows using a Radeon 9500pro on WinXP (the driver doesn't support Stereo) * has indicated that a format without stereo is returned when stereo is unavailable. * So in case PFD_STEREO is set, formats that support it should have priority above formats * without. In case PFD_STEREO_DONTCARE is set, stereo is ignored. * * To summarize the following is most likely the correct behavior: * stereo not set -> prefer non-stereo formats, but also accept stereo formats * stereo set -> prefer stereo formats, but also accept non-stereo formats * stereo don't care -> it doesn't matter whether we get stereo or not * * In Wine we will treat non-stereo the same way as don't care because it makes * format selection even more complicated and second drivers with Stereo advertise * each format twice anyway. */ /* Doublebuffer, see the comments above */ if (!(ppfd->dwFlags & PFD_DOUBLEBUFFER_DONTCARE)) { if (((ppfd->dwFlags & PFD_DOUBLEBUFFER) != bestDBuffer) && ((format.dwFlags & PFD_DOUBLEBUFFER) == (ppfd->dwFlags & PFD_DOUBLEBUFFER))) goto found; if (bestDBuffer != -1 && (format.dwFlags & PFD_DOUBLEBUFFER) != bestDBuffer) continue; } else if (!best_format) goto found; /* Stereo, see the comments above. */ if (!(ppfd->dwFlags & PFD_STEREO_DONTCARE)) { if (((ppfd->dwFlags & PFD_STEREO) != bestStereo) && ((format.dwFlags & PFD_STEREO) == (ppfd->dwFlags & PFD_STEREO))) goto found; if (bestStereo != -1 && (format.dwFlags & PFD_STEREO) != bestStereo) continue; } else if (!best_format) goto found; /* Below we will do a number of checks to select the 'best' pixelformat. * We assume the precedence cColorBits > cAlphaBits > cDepthBits > cStencilBits -> cAuxBuffers. * The code works by trying to match the most important options as close as possible. * When a reasonable format is found, we will try to match more options. * It appears (see the opengl32 test) that Windows opengl drivers ignore options * like cColorBits, cAlphaBits and friends if they are set to 0, so they are considered * as DONTCARE. At least Serious Sam TSE relies on this behavior. */ if (ppfd->cColorBits) { if (((ppfd->cColorBits > best.cColorBits) && (format.cColorBits > best.cColorBits)) || ((format.cColorBits >= ppfd->cColorBits) && (format.cColorBits < best.cColorBits))) goto found; if (best.cColorBits != format.cColorBits) /* Do further checks if the format is compatible */ { TRACE( "color mismatch for iPixelFormat=%d\n", i ); continue; } } if (ppfd->cAlphaBits) { if (((ppfd->cAlphaBits > best.cAlphaBits) && (format.cAlphaBits > best.cAlphaBits)) || ((format.cAlphaBits >= ppfd->cAlphaBits) && (format.cAlphaBits < best.cAlphaBits))) goto found; if (best.cAlphaBits != format.cAlphaBits) { TRACE( "alpha mismatch for iPixelFormat=%d\n", i ); continue; } } if (ppfd->cDepthBits) { if (((ppfd->cDepthBits > best.cDepthBits) && (format.cDepthBits > best.cDepthBits)) || ((format.cDepthBits >= ppfd->cDepthBits) && (format.cDepthBits < best.cDepthBits))) goto found; if (best.cDepthBits != format.cDepthBits) { TRACE( "depth mismatch for iPixelFormat=%d\n", i ); continue; } } if (ppfd->cStencilBits) { if (((ppfd->cStencilBits > best.cStencilBits) && (format.cStencilBits > best.cStencilBits)) || ((format.cStencilBits >= ppfd->cStencilBits) && (format.cStencilBits < best.cStencilBits))) goto found; if (best.cStencilBits != format.cStencilBits) { TRACE( "stencil mismatch for iPixelFormat=%d\n", i ); continue; } } if (ppfd->cAuxBuffers) { if (((ppfd->cAuxBuffers > best.cAuxBuffers) && (format.cAuxBuffers > best.cAuxBuffers)) || ((format.cAuxBuffers >= ppfd->cAuxBuffers) && (format.cAuxBuffers < best.cAuxBuffers))) goto found; if (best.cAuxBuffers != format.cAuxBuffers) { TRACE( "aux mismatch for iPixelFormat=%d\n", i ); continue; } } continue; found: best_format = i; best = format; bestDBuffer = format.dwFlags & PFD_DOUBLEBUFFER; bestStereo = format.dwFlags & PFD_STEREO; } TRACE( "returning %u\n", best_format ); return best_format; } /*********************************************************************** * wglGetPixelFormat (OPENGL32.@) */ INT WINAPI wglGetPixelFormat(HDC hdc) { struct opengl_funcs *funcs = get_dc_funcs( hdc ); if (!funcs) { SetLastError( ERROR_INVALID_PIXEL_FORMAT ); return 0; } return funcs->wgl.p_wglGetPixelFormat( hdc ); } /*********************************************************************** * wglSetPixelFormat(OPENGL32.@) */ BOOL WINAPI wglSetPixelFormat( HDC hdc, INT format, const PIXELFORMATDESCRIPTOR *descr ) { struct opengl_funcs *funcs = get_dc_funcs( hdc ); if (!funcs) return FALSE; return funcs->wgl.p_wglSetPixelFormat( hdc, format, descr ); } /*********************************************************************** * wglSwapBuffers (OPENGL32.@) */ BOOL WINAPI DECLSPEC_HOTPATCH wglSwapBuffers( HDC hdc ) { const struct opengl_funcs *funcs = get_dc_funcs( hdc ); if (!funcs || !funcs->wgl.p_wglSwapBuffers) return FALSE; if (!funcs->wgl.p_wglSwapBuffers( hdc )) return FALSE; if (TRACE_ON(fps)) { static long prev_time, start_time; static unsigned long frames, frames_total; DWORD time = GetTickCount(); frames++; frames_total++; /* every 1.5 seconds */ if (time - prev_time > 1500) { TRACE_(fps)("@ approx %.2ffps, total %.2ffps\n", 1000.0*frames/(time - prev_time), 1000.0*frames_total/(time - start_time)); prev_time = time; frames = 0; if (start_time == 0) start_time = time; } } return TRUE; } /*********************************************************************** * wglCreateLayerContext (OPENGL32.@) */ HGLRC WINAPI wglCreateLayerContext(HDC hdc, int iLayerPlane) { TRACE("(%p,%d)\n", hdc, iLayerPlane); if (iLayerPlane == 0) { return wglCreateContext(hdc); } FIXME("no handler for layer %d\n", iLayerPlane); return NULL; } /*********************************************************************** * wglDescribeLayerPlane (OPENGL32.@) */ BOOL WINAPI wglDescribeLayerPlane(HDC hdc, int iPixelFormat, int iLayerPlane, UINT nBytes, LPLAYERPLANEDESCRIPTOR plpd) { FIXME("(%p,%d,%d,%d,%p)\n", hdc, iPixelFormat, iLayerPlane, nBytes, plpd); return FALSE; } /*********************************************************************** * wglGetLayerPaletteEntries (OPENGL32.@) */ int WINAPI wglGetLayerPaletteEntries(HDC hdc, int iLayerPlane, int iStart, int cEntries, const COLORREF *pcr) { FIXME("(): stub!\n"); return 0; } static BOOL filter_extensions(const char *extensions, GLubyte **exts_list, GLuint **disabled_exts); void WINAPI glGetIntegerv(GLenum pname, GLint *data) { const struct opengl_funcs *funcs = NtCurrentTeb()->glTable; TRACE("(%d, %p)\n", pname, data); if (pname == GL_NUM_EXTENSIONS) { struct wgl_handle *ptr = get_current_context_ptr(); if (ptr->u.context->disabled_exts || filter_extensions(NULL, NULL, &ptr->u.context->disabled_exts)) { const GLuint *disabled_exts = ptr->u.context->disabled_exts; GLint count, disabled_count = 0; funcs->gl.p_glGetIntegerv(pname, &count); while (*disabled_exts++ != ~0u) disabled_count++; *data = count - disabled_count; return; } } funcs->gl.p_glGetIntegerv(pname, data); } const GLubyte * WINAPI glGetStringi(GLenum name, GLuint index) { const struct opengl_funcs *funcs = NtCurrentTeb()->glTable; TRACE("(%d, %d)\n", name, index); if (!funcs->ext.p_glGetStringi) { void **func_ptr = (void **)&funcs->ext.p_glGetStringi; *func_ptr = funcs->wgl.p_wglGetProcAddress("glGetStringi"); } if (name == GL_EXTENSIONS) { struct wgl_handle *ptr = get_current_context_ptr(); if (ptr->u.context->disabled_exts || filter_extensions(NULL, NULL, &ptr->u.context->disabled_exts)) { const GLuint *disabled_exts = ptr->u.context->disabled_exts; unsigned int disabled_count = 0; while (index + disabled_count >= *disabled_exts++) disabled_count++; return funcs->ext.p_glGetStringi(name, index + disabled_count); } } return funcs->ext.p_glGetStringi(name, index); } /* check if the extension is present in the list */ static BOOL has_extension( const char *list, const char *ext, size_t len ) { if (!list) { const char *gl_ext; unsigned int i; GLint extensions_count; glGetIntegerv(GL_NUM_EXTENSIONS, &extensions_count); for (i = 0; i < extensions_count; ++i) { gl_ext = (const char *)glGetStringi(GL_EXTENSIONS, i); if (!strncmp(gl_ext, ext, len) && !gl_ext[len]) return TRUE; } return FALSE; } while (list) { while (*list == ' ') list++; if (!strncmp( list, ext, len ) && (!list[len] || list[len] == ' ')) return TRUE; list = strchr( list, ' ' ); } return FALSE; } static int compar(const void *elt_a, const void *elt_b) { return strcmp(((const OpenGL_extension *) elt_a)->name, ((const OpenGL_extension *) elt_b)->name); } /* Check if a GL extension is supported */ static BOOL is_extension_supported(const char* extension) { enum wgl_handle_type type = get_current_context_type(); const struct opengl_funcs *funcs = NtCurrentTeb()->glTable; const char *gl_ext_string = NULL; size_t len; TRACE("Checking for extension '%s'\n", extension); if (type == HANDLE_CONTEXT) { gl_ext_string = (const char*)glGetString(GL_EXTENSIONS); if (!gl_ext_string) { ERR("No OpenGL extensions found, check if your OpenGL setup is correct!\n"); return FALSE; } } /* We use the GetProcAddress function from the display driver to retrieve function pointers * for OpenGL and WGL extensions. In case of winex11.drv the OpenGL extension lookup is done * using glXGetProcAddress. This function is quite unreliable in the sense that its specs don't * require the function to return NULL when an extension isn't found. For this reason we check * if the OpenGL extension required for the function we are looking up is supported. */ while ((len = strcspn(extension, " ")) != 0) { /* Check if the extension is part of the GL extension string to see if it is supported. */ if (has_extension(gl_ext_string, extension, len)) return TRUE; /* In general an OpenGL function starts as an ARB/EXT extension and at some stage * it becomes part of the core OpenGL library and can be reached without the ARB/EXT * suffix as well. In the extension table, these functions contain GL_VERSION_major_minor. * Check if we are searching for a core GL function */ if(strncmp(extension, "GL_VERSION_", 11) == 0) { const GLubyte *gl_version = funcs->gl.p_glGetString(GL_VERSION); const char *version = extension + 11; /* Move past 'GL_VERSION_' */ if(!gl_version) { ERR("No OpenGL version found!\n"); return FALSE; } /* Compare the major/minor version numbers of the native OpenGL library and what is required by the function. * The gl_version string is guaranteed to have at least a major/minor and sometimes it has a release number as well. */ if( (gl_version[0] > version[0]) || ((gl_version[0] == version[0]) && (gl_version[2] >= version[2])) ) { return TRUE; } WARN("The function requires OpenGL version '%c.%c' while your drivers only provide '%c.%c'\n", version[0], version[2], gl_version[0], gl_version[2]); } if (extension[len] == ' ') len++; extension += len; } return FALSE; } /*********************************************************************** * wglGetProcAddress (OPENGL32.@) */ PROC WINAPI wglGetProcAddress( LPCSTR name ) { struct opengl_funcs *funcs = NtCurrentTeb()->glTable; void **func_ptr; OpenGL_extension ext; const OpenGL_extension *ext_ret; if (!name) return NULL; /* Without an active context opengl32 doesn't know to what * driver it has to dispatch wglGetProcAddress. */ if (!get_current_context_ptr()) { WARN("No active WGL context found\n"); return NULL; } ext.name = name; ext_ret = bsearch(&ext, extension_registry, extension_registry_size, sizeof(ext), compar); if (!ext_ret) { WARN("Function %s unknown\n", name); return NULL; } func_ptr = (void **)&funcs->ext + (ext_ret - extension_registry); if (!*func_ptr) { void *driver_func = funcs->wgl.p_wglGetProcAddress( name ); if (!is_extension_supported(ext_ret->extension)) { unsigned int i; static const struct { const char *name, *alt; } alternatives[] = { { "glCopyTexSubImage3DEXT", "glCopyTexSubImage3D" }, /* needed by RuneScape */ { "glVertexAttribDivisor", "glVertexAttribDivisorARB"}, /* needed by Caffeine */ }; for (i = 0; i < sizeof(alternatives)/sizeof(alternatives[0]); i++) { if (strcmp( name, alternatives[i].name )) continue; WARN("Extension %s required for %s not supported, trying %s\n", ext_ret->extension, name, alternatives[i].alt ); return wglGetProcAddress( alternatives[i].alt ); } WARN("Extension %s required for %s not supported\n", ext_ret->extension, name); return NULL; } if (driver_func == NULL) { WARN("Function %s not supported by driver\n", name); return NULL; } *func_ptr = driver_func; } TRACE("returning %s -> %p\n", name, ext_ret->func); return ext_ret->func; } /*********************************************************************** * wglRealizeLayerPalette (OPENGL32.@) */ BOOL WINAPI wglRealizeLayerPalette(HDC hdc, int iLayerPlane, BOOL bRealize) { FIXME("()\n"); return FALSE; } /*********************************************************************** * wglSetLayerPaletteEntries (OPENGL32.@) */ int WINAPI wglSetLayerPaletteEntries(HDC hdc, int iLayerPlane, int iStart, int cEntries, const COLORREF *pcr) { FIXME("(): stub!\n"); return 0; } /*********************************************************************** * wglSwapLayerBuffers (OPENGL32.@) */ BOOL WINAPI wglSwapLayerBuffers(HDC hdc, UINT fuPlanes) { TRACE("(%p, %08x)\n", hdc, fuPlanes); if (fuPlanes & WGL_SWAP_MAIN_PLANE) { if (!wglSwapBuffers( hdc )) return FALSE; fuPlanes &= ~WGL_SWAP_MAIN_PLANE; } if (fuPlanes) { WARN("Following layers unhandled: %08x\n", fuPlanes); } return TRUE; } /*********************************************************************** * wglBindTexImageARB * * Provided by the WGL_ARB_render_texture extension. */ BOOL WINAPI wglBindTexImageARB( HPBUFFERARB handle, int buffer ) { struct wgl_handle *ptr = get_handle_ptr( handle, HANDLE_PBUFFER ); BOOL ret; if (!ptr) return FALSE; ret = ptr->funcs->ext.p_wglBindTexImageARB( ptr->u.pbuffer, buffer ); release_handle_ptr( ptr ); return ret; } /*********************************************************************** * wglReleaseTexImageARB * * Provided by the WGL_ARB_render_texture extension. */ BOOL WINAPI wglReleaseTexImageARB( HPBUFFERARB handle, int buffer ) { struct wgl_handle *ptr = get_handle_ptr( handle, HANDLE_PBUFFER ); BOOL ret; if (!ptr) return FALSE; ret = ptr->funcs->ext.p_wglReleaseTexImageARB( ptr->u.pbuffer, buffer ); release_handle_ptr( ptr ); return ret; } /*********************************************************************** * wglSetPbufferAttribARB * * Provided by the WGL_ARB_render_texture extension. */ BOOL WINAPI wglSetPbufferAttribARB( HPBUFFERARB handle, const int *attribs ) { struct wgl_handle *ptr = get_handle_ptr( handle, HANDLE_PBUFFER ); BOOL ret; if (!ptr) return FALSE; ret = ptr->funcs->ext.p_wglSetPbufferAttribARB( ptr->u.pbuffer, attribs ); release_handle_ptr( ptr ); return ret; } /*********************************************************************** * wglCreatePbufferARB * * Provided by the WGL_ARB_pbuffer extension. */ HPBUFFERARB WINAPI wglCreatePbufferARB( HDC hdc, int format, int width, int height, const int *attribs ) { HPBUFFERARB ret; struct wgl_pbuffer *pbuffer; struct opengl_funcs *funcs = get_dc_funcs( hdc ); if (!funcs || !funcs->ext.p_wglCreatePbufferARB) return 0; if (!(pbuffer = funcs->ext.p_wglCreatePbufferARB( hdc, format, width, height, attribs ))) return 0; ret = alloc_handle( HANDLE_PBUFFER, funcs, pbuffer ); if (!ret) funcs->ext.p_wglDestroyPbufferARB( pbuffer ); return ret; } /*********************************************************************** * wglGetPbufferDCARB * * Provided by the WGL_ARB_pbuffer extension. */ HDC WINAPI wglGetPbufferDCARB( HPBUFFERARB handle ) { struct wgl_handle *ptr = get_handle_ptr( handle, HANDLE_PBUFFER ); HDC ret; if (!ptr) return 0; ret = ptr->funcs->ext.p_wglGetPbufferDCARB( ptr->u.pbuffer ); release_handle_ptr( ptr ); return ret; } /*********************************************************************** * wglReleasePbufferDCARB * * Provided by the WGL_ARB_pbuffer extension. */ int WINAPI wglReleasePbufferDCARB( HPBUFFERARB handle, HDC hdc ) { struct wgl_handle *ptr = get_handle_ptr( handle, HANDLE_PBUFFER ); BOOL ret; if (!ptr) return FALSE; ret = ptr->funcs->ext.p_wglReleasePbufferDCARB( ptr->u.pbuffer, hdc ); release_handle_ptr( ptr ); return ret; } /*********************************************************************** * wglDestroyPbufferARB * * Provided by the WGL_ARB_pbuffer extension. */ BOOL WINAPI wglDestroyPbufferARB( HPBUFFERARB handle ) { struct wgl_handle *ptr = get_handle_ptr( handle, HANDLE_PBUFFER ); if (!ptr) return FALSE; ptr->funcs->ext.p_wglDestroyPbufferARB( ptr->u.pbuffer ); free_handle_ptr( ptr ); return TRUE; } /*********************************************************************** * wglQueryPbufferARB * * Provided by the WGL_ARB_pbuffer extension. */ BOOL WINAPI wglQueryPbufferARB( HPBUFFERARB handle, int attrib, int *value ) { struct wgl_handle *ptr = get_handle_ptr( handle, HANDLE_PBUFFER ); BOOL ret; if (!ptr) return FALSE; ret = ptr->funcs->ext.p_wglQueryPbufferARB( ptr->u.pbuffer, attrib, value ); release_handle_ptr( ptr ); return ret; } /*********************************************************************** * wglUseFontBitmaps_common */ static BOOL wglUseFontBitmaps_common( HDC hdc, DWORD first, DWORD count, DWORD listBase, BOOL unicode ) { const struct opengl_funcs *funcs = NtCurrentTeb()->glTable; GLYPHMETRICS gm; unsigned int glyph, size = 0; void *bitmap = NULL, *gl_bitmap = NULL; int org_alignment; BOOL ret = TRUE; funcs->gl.p_glGetIntegerv(GL_UNPACK_ALIGNMENT, &org_alignment); funcs->gl.p_glPixelStorei(GL_UNPACK_ALIGNMENT, 4); for (glyph = first; glyph < first + count; glyph++) { unsigned int needed_size, height, width, width_int; if (unicode) needed_size = GetGlyphOutlineW(hdc, glyph, GGO_BITMAP, &gm, 0, NULL, &identity); else needed_size = GetGlyphOutlineA(hdc, glyph, GGO_BITMAP, &gm, 0, NULL, &identity); TRACE("Glyph: %3d / List: %d size %d\n", glyph, listBase, needed_size); if (needed_size == GDI_ERROR) { ret = FALSE; break; } if (needed_size > size) { size = needed_size; HeapFree(GetProcessHeap(), 0, bitmap); HeapFree(GetProcessHeap(), 0, gl_bitmap); bitmap = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size); gl_bitmap = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size); } if (needed_size != 0) { if (unicode) ret = (GetGlyphOutlineW(hdc, glyph, GGO_BITMAP, &gm, size, bitmap, &identity) != GDI_ERROR); else ret = (GetGlyphOutlineA(hdc, glyph, GGO_BITMAP, &gm, size, bitmap, &identity) != GDI_ERROR); if (!ret) break; } if (TRACE_ON(wgl)) { unsigned int bitmask; unsigned char *bitmap_ = bitmap; TRACE(" - bbox: %d x %d\n", gm.gmBlackBoxX, gm.gmBlackBoxY); TRACE(" - origin: (%d, %d)\n", gm.gmptGlyphOrigin.x, gm.gmptGlyphOrigin.y); TRACE(" - increment: %d - %d\n", gm.gmCellIncX, gm.gmCellIncY); if (needed_size != 0) { TRACE(" - bitmap:\n"); for (height = 0; height < gm.gmBlackBoxY; height++) { TRACE(" "); for (width = 0, bitmask = 0x80; width < gm.gmBlackBoxX; width++, bitmask >>= 1) { if (bitmask == 0) { bitmap_ += 1; bitmask = 0x80; } if (*bitmap_ & bitmask) TRACE("*"); else TRACE(" "); } bitmap_ += (4 - ((UINT_PTR)bitmap_ & 0x03)); TRACE("\n"); } } } /* In OpenGL, the bitmap is drawn from the bottom to the top... So we need to invert the * glyph for it to be drawn properly. */ if (needed_size != 0) { width_int = (gm.gmBlackBoxX + 31) / 32; for (height = 0; height < gm.gmBlackBoxY; height++) { for (width = 0; width < width_int; width++) { ((int *) gl_bitmap)[(gm.gmBlackBoxY - height - 1) * width_int + width] = ((int *) bitmap)[height * width_int + width]; } } } funcs->gl.p_glNewList(listBase++, GL_COMPILE); if (needed_size != 0) { funcs->gl.p_glBitmap(gm.gmBlackBoxX, gm.gmBlackBoxY, 0 - gm.gmptGlyphOrigin.x, (int) gm.gmBlackBoxY - gm.gmptGlyphOrigin.y, gm.gmCellIncX, gm.gmCellIncY, gl_bitmap); } else { /* This is the case of 'empty' glyphs like the space character */ funcs->gl.p_glBitmap(0, 0, 0, 0, gm.gmCellIncX, gm.gmCellIncY, NULL); } funcs->gl.p_glEndList(); } funcs->gl.p_glPixelStorei(GL_UNPACK_ALIGNMENT, org_alignment); HeapFree(GetProcessHeap(), 0, bitmap); HeapFree(GetProcessHeap(), 0, gl_bitmap); return ret; } /*********************************************************************** * wglUseFontBitmapsA (OPENGL32.@) */ BOOL WINAPI wglUseFontBitmapsA(HDC hdc, DWORD first, DWORD count, DWORD listBase) { return wglUseFontBitmaps_common( hdc, first, count, listBase, FALSE ); } /*********************************************************************** * wglUseFontBitmapsW (OPENGL32.@) */ BOOL WINAPI wglUseFontBitmapsW(HDC hdc, DWORD first, DWORD count, DWORD listBase) { return wglUseFontBitmaps_common( hdc, first, count, listBase, TRUE ); } static void fixed_to_double(POINTFX fixed, UINT em_size, GLdouble vertex[3]) { vertex[0] = (fixed.x.value + (GLdouble)fixed.x.fract / (1 << 16)) / em_size; vertex[1] = (fixed.y.value + (GLdouble)fixed.y.fract / (1 << 16)) / em_size; vertex[2] = 0.0; } static void WINAPI tess_callback_vertex(GLvoid *vertex) { const struct opengl_funcs *funcs = NtCurrentTeb()->glTable; GLdouble *dbl = vertex; TRACE("%f, %f, %f\n", dbl[0], dbl[1], dbl[2]); funcs->gl.p_glVertex3dv(vertex); } static void WINAPI tess_callback_begin(GLenum which) { const struct opengl_funcs *funcs = NtCurrentTeb()->glTable; TRACE("%d\n", which); funcs->gl.p_glBegin(which); } static void WINAPI tess_callback_end(void) { const struct opengl_funcs *funcs = NtCurrentTeb()->glTable; TRACE("\n"); funcs->gl.p_glEnd(); } typedef struct _bezier_vector { GLdouble x; GLdouble y; } bezier_vector; static double bezier_deviation_squared(const bezier_vector *p) { bezier_vector deviation; bezier_vector vertex; bezier_vector base; double base_length; double dot; vertex.x = (p[0].x + p[1].x*2 + p[2].x)/4 - p[0].x; vertex.y = (p[0].y + p[1].y*2 + p[2].y)/4 - p[0].y; base.x = p[2].x - p[0].x; base.y = p[2].y - p[0].y; base_length = sqrt(base.x*base.x + base.y*base.y); base.x /= base_length; base.y /= base_length; dot = base.x*vertex.x + base.y*vertex.y; dot = min(max(dot, 0.0), base_length); base.x *= dot; base.y *= dot; deviation.x = vertex.x-base.x; deviation.y = vertex.y-base.y; return deviation.x*deviation.x + deviation.y*deviation.y; } static int bezier_approximate(const bezier_vector *p, bezier_vector *points, FLOAT deviation) { bezier_vector first_curve[3]; bezier_vector second_curve[3]; bezier_vector vertex; int total_vertices; if(bezier_deviation_squared(p) <= deviation*deviation) { if(points) *points = p[2]; return 1; } vertex.x = (p[0].x + p[1].x*2 + p[2].x)/4; vertex.y = (p[0].y + p[1].y*2 + p[2].y)/4; first_curve[0] = p[0]; first_curve[1].x = (p[0].x + p[1].x)/2; first_curve[1].y = (p[0].y + p[1].y)/2; first_curve[2] = vertex; second_curve[0] = vertex; second_curve[1].x = (p[2].x + p[1].x)/2; second_curve[1].y = (p[2].y + p[1].y)/2; second_curve[2] = p[2]; total_vertices = bezier_approximate(first_curve, points, deviation); if(points) points += total_vertices; total_vertices += bezier_approximate(second_curve, points, deviation); return total_vertices; } /*********************************************************************** * wglUseFontOutlines_common */ static BOOL wglUseFontOutlines_common(HDC hdc, DWORD first, DWORD count, DWORD listBase, FLOAT deviation, FLOAT extrusion, int format, LPGLYPHMETRICSFLOAT lpgmf, BOOL unicode) { const struct opengl_funcs *funcs = NtCurrentTeb()->glTable; UINT glyph; GLUtesselator *tess = NULL; LOGFONTW lf; HFONT old_font, unscaled_font; UINT em_size = 1024; RECT rc; TRACE("(%p, %d, %d, %d, %f, %f, %d, %p, %s)\n", hdc, first, count, listBase, deviation, extrusion, format, lpgmf, unicode ? "W" : "A"); if(deviation <= 0.0) deviation = 1.0/em_size; if(format == WGL_FONT_POLYGONS) { tess = gluNewTess(); if(!tess) { ERR("glu32 is required for this function but isn't available\n"); return FALSE; } gluTessCallback(tess, GLU_TESS_VERTEX, (void *)tess_callback_vertex); gluTessCallback(tess, GLU_TESS_BEGIN, (void *)tess_callback_begin); gluTessCallback(tess, GLU_TESS_END, tess_callback_end); } GetObjectW(GetCurrentObject(hdc, OBJ_FONT), sizeof(lf), &lf); rc.left = rc.right = rc.bottom = 0; rc.top = em_size; DPtoLP(hdc, (POINT*)&rc, 2); lf.lfHeight = -abs(rc.top - rc.bottom); lf.lfOrientation = lf.lfEscapement = 0; unscaled_font = CreateFontIndirectW(&lf); old_font = SelectObject(hdc, unscaled_font); for (glyph = first; glyph < first + count; glyph++) { DWORD needed; GLYPHMETRICS gm; BYTE *buf; TTPOLYGONHEADER *pph; TTPOLYCURVE *ppc; GLdouble *vertices = NULL; int vertex_total = -1; if(unicode) needed = GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity); else needed = GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity); if(needed == GDI_ERROR) goto error; buf = HeapAlloc(GetProcessHeap(), 0, needed); if(unicode) GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity); else GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity); TRACE("glyph %d\n", glyph); if(lpgmf) { lpgmf->gmfBlackBoxX = (float)gm.gmBlackBoxX / em_size; lpgmf->gmfBlackBoxY = (float)gm.gmBlackBoxY / em_size; lpgmf->gmfptGlyphOrigin.x = (float)gm.gmptGlyphOrigin.x / em_size; lpgmf->gmfptGlyphOrigin.y = (float)gm.gmptGlyphOrigin.y / em_size; lpgmf->gmfCellIncX = (float)gm.gmCellIncX / em_size; lpgmf->gmfCellIncY = (float)gm.gmCellIncY / em_size; TRACE("%fx%f at %f,%f inc %f,%f\n", lpgmf->gmfBlackBoxX, lpgmf->gmfBlackBoxY, lpgmf->gmfptGlyphOrigin.x, lpgmf->gmfptGlyphOrigin.y, lpgmf->gmfCellIncX, lpgmf->gmfCellIncY); lpgmf++; } funcs->gl.p_glNewList(listBase++, GL_COMPILE); funcs->gl.p_glFrontFace(GL_CCW); if(format == WGL_FONT_POLYGONS) { funcs->gl.p_glNormal3d(0.0, 0.0, 1.0); gluTessNormal(tess, 0, 0, 1); gluTessBeginPolygon(tess, NULL); } while(!vertices) { if(vertex_total != -1) vertices = HeapAlloc(GetProcessHeap(), 0, vertex_total * 3 * sizeof(GLdouble)); vertex_total = 0; pph = (TTPOLYGONHEADER*)buf; while((BYTE*)pph < buf + needed) { GLdouble previous[3]; fixed_to_double(pph->pfxStart, em_size, previous); if(vertices) TRACE("\tstart %d, %d\n", pph->pfxStart.x.value, pph->pfxStart.y.value); if(format == WGL_FONT_POLYGONS) gluTessBeginContour(tess); else funcs->gl.p_glBegin(GL_LINE_LOOP); if(vertices) { fixed_to_double(pph->pfxStart, em_size, vertices); if(format == WGL_FONT_POLYGONS) gluTessVertex(tess, vertices, vertices); else funcs->gl.p_glVertex3d(vertices[0], vertices[1], vertices[2]); vertices += 3; } vertex_total++; ppc = (TTPOLYCURVE*)((char*)pph + sizeof(*pph)); while((char*)ppc < (char*)pph + pph->cb) { int i, j; int num; switch(ppc->wType) { case TT_PRIM_LINE: for(i = 0; i < ppc->cpfx; i++) { if(vertices) { TRACE("\t\tline to %d, %d\n", ppc->apfx[i].x.value, ppc->apfx[i].y.value); fixed_to_double(ppc->apfx[i], em_size, vertices); if(format == WGL_FONT_POLYGONS) gluTessVertex(tess, vertices, vertices); else funcs->gl.p_glVertex3d(vertices[0], vertices[1], vertices[2]); vertices += 3; } fixed_to_double(ppc->apfx[i], em_size, previous); vertex_total++; } break; case TT_PRIM_QSPLINE: for(i = 0; i < ppc->cpfx-1; i++) { bezier_vector curve[3]; bezier_vector *points; GLdouble curve_vertex[3]; if(vertices) TRACE("\t\tcurve %d,%d %d,%d\n", ppc->apfx[i].x.value, ppc->apfx[i].y.value, ppc->apfx[i + 1].x.value, ppc->apfx[i + 1].y.value); curve[0].x = previous[0]; curve[0].y = previous[1]; fixed_to_double(ppc->apfx[i], em_size, curve_vertex); curve[1].x = curve_vertex[0]; curve[1].y = curve_vertex[1]; fixed_to_double(ppc->apfx[i + 1], em_size, curve_vertex); curve[2].x = curve_vertex[0]; curve[2].y = curve_vertex[1]; if(i < ppc->cpfx-2) { curve[2].x = (curve[1].x + curve[2].x)/2; curve[2].y = (curve[1].y + curve[2].y)/2; } num = bezier_approximate(curve, NULL, deviation); points = HeapAlloc(GetProcessHeap(), 0, num*sizeof(bezier_vector)); num = bezier_approximate(curve, points, deviation); vertex_total += num; if(vertices) { for(j=0; jgl.p_glVertex3d(vertices[0], vertices[1], vertices[2]); vertices += 3; } } HeapFree(GetProcessHeap(), 0, points); previous[0] = curve[2].x; previous[1] = curve[2].y; } break; default: ERR("\t\tcurve type = %d\n", ppc->wType); if(format == WGL_FONT_POLYGONS) gluTessEndContour(tess); else funcs->gl.p_glEnd(); goto error_in_list; } ppc = (TTPOLYCURVE*)((char*)ppc + sizeof(*ppc) + (ppc->cpfx - 1) * sizeof(POINTFX)); } if(format == WGL_FONT_POLYGONS) gluTessEndContour(tess); else funcs->gl.p_glEnd(); pph = (TTPOLYGONHEADER*)((char*)pph + pph->cb); } } error_in_list: if(format == WGL_FONT_POLYGONS) gluTessEndPolygon(tess); funcs->gl.p_glTranslated((GLdouble)gm.gmCellIncX / em_size, (GLdouble)gm.gmCellIncY / em_size, 0.0); funcs->gl.p_glEndList(); HeapFree(GetProcessHeap(), 0, buf); HeapFree(GetProcessHeap(), 0, vertices); } error: DeleteObject(SelectObject(hdc, old_font)); if(format == WGL_FONT_POLYGONS) gluDeleteTess(tess); return TRUE; } /*********************************************************************** * wglUseFontOutlinesA (OPENGL32.@) */ BOOL WINAPI wglUseFontOutlinesA(HDC hdc, DWORD first, DWORD count, DWORD listBase, FLOAT deviation, FLOAT extrusion, int format, LPGLYPHMETRICSFLOAT lpgmf) { return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, FALSE); } /*********************************************************************** * wglUseFontOutlinesW (OPENGL32.@) */ BOOL WINAPI wglUseFontOutlinesW(HDC hdc, DWORD first, DWORD count, DWORD listBase, FLOAT deviation, FLOAT extrusion, int format, LPGLYPHMETRICSFLOAT lpgmf) { return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, TRUE); } /*********************************************************************** * glDebugEntry (OPENGL32.@) */ GLint WINAPI glDebugEntry( GLint unknown1, GLint unknown2 ) { return 0; } static GLubyte *filter_extensions_list(const char *extensions, const char *disabled) { char *p, *str; const char *end; p = str = HeapAlloc(GetProcessHeap(), 0, strlen(extensions) + 2); if (!str) return NULL; TRACE( "GL_EXTENSIONS:\n" ); for (;;) { while (*extensions == ' ') extensions++; if (!*extensions) break; if (!(end = strchr(extensions, ' '))) end = extensions + strlen(extensions); memcpy(p, extensions, end - extensions); p[end - extensions] = 0; if (!has_extension(disabled, p, strlen(p))) { TRACE("++ %s\n", p); p += end - extensions; *p++ = ' '; } else { TRACE("-- %s (disabled by config)\n", p); } extensions = end; } *p = 0; return (GLubyte *)str; } static GLuint *filter_extensions_index(const char *disabled) { const struct opengl_funcs *funcs = NtCurrentTeb()->glTable; const char *ext, *end, *gl_ext; GLuint *disabled_exts, *new_disabled_exts; unsigned int i = 0, j, disabled_size; GLint extensions_count; if (!funcs->ext.p_glGetStringi) { void **func_ptr = (void **)&funcs->ext.p_glGetStringi; *func_ptr = funcs->wgl.p_wglGetProcAddress("glGetStringi"); if (!funcs->ext.p_glGetStringi) return NULL; } funcs->gl.p_glGetIntegerv(GL_NUM_EXTENSIONS, &extensions_count); disabled_size = 2; disabled_exts = HeapAlloc(GetProcessHeap(), 0, disabled_size * sizeof(*disabled_exts)); if (!disabled_exts) return NULL; TRACE( "GL_EXTENSIONS:\n" ); for (j = 0; j < extensions_count; ++j) { gl_ext = (const char *)funcs->ext.p_glGetStringi(GL_EXTENSIONS, j); ext = disabled; for (;;) { while (*ext == ' ') ext++; if (!*ext) { TRACE("++ %s\n", gl_ext); break; } if (!(end = strchr(ext, ' '))) end = ext + strlen(ext); if (!strncmp(gl_ext, ext, end - ext) && !gl_ext[end - ext]) { if (i + 1 == disabled_size) { disabled_size *= 2; new_disabled_exts = HeapReAlloc(GetProcessHeap(), 0, disabled_exts, disabled_size * sizeof(*disabled_exts)); if (!new_disabled_exts) { disabled_exts[i] = ~0u; return disabled_exts; } disabled_exts = new_disabled_exts; } TRACE("-- %s (disabled by config)\n", gl_ext); disabled_exts[i++] = j; break; } ext = end; } } disabled_exts[i] = ~0u; return disabled_exts; } /* build the extension string by filtering out the disabled extensions */ static BOOL filter_extensions(const char *extensions, GLubyte **exts_list, GLuint **disabled_exts) { static const char *disabled; if (!disabled) { HKEY hkey; DWORD size; char *str = NULL; /* @@ Wine registry key: HKCU\Software\Wine\OpenGL */ if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\OpenGL", &hkey )) { if (!RegQueryValueExA( hkey, "DisabledExtensions", 0, NULL, NULL, &size )) { str = HeapAlloc( GetProcessHeap(), 0, size ); if (RegQueryValueExA( hkey, "DisabledExtensions", 0, NULL, (BYTE *)str, &size )) *str = 0; } RegCloseKey( hkey ); } if (str) { if (InterlockedCompareExchangePointer( (void **)&disabled, str, NULL )) HeapFree( GetProcessHeap(), 0, str ); } else disabled = ""; } if (!disabled[0]) return FALSE; if (extensions && !*exts_list) *exts_list = filter_extensions_list(extensions, disabled); if (!*disabled_exts) *disabled_exts = filter_extensions_index(disabled); return (exts_list && *exts_list) || *disabled_exts; } /*********************************************************************** * glGetString (OPENGL32.@) */ const GLubyte * WINAPI glGetString( GLenum name ) { const struct opengl_funcs *funcs = NtCurrentTeb()->glTable; const GLubyte *ret = funcs->gl.p_glGetString( name ); if (name == GL_EXTENSIONS && ret) { struct wgl_handle *ptr = get_current_context_ptr(); if (ptr->u.context->extensions || filter_extensions((const char *)ret, &ptr->u.context->extensions, &ptr->u.context->disabled_exts)) ret = ptr->u.context->extensions; } return ret; } /*********************************************************************** * OpenGL initialisation routine */ BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved ) { switch(reason) { case DLL_PROCESS_ATTACH: NtCurrentTeb()->glTable = &null_opengl_funcs; break; case DLL_THREAD_ATTACH: NtCurrentTeb()->glTable = &null_opengl_funcs; break; } return TRUE; }