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opengl32: Allocate a separate context structure to store generic information.

This commit is contained in:
Alexandre Julliard 2012-07-16 22:53:28 +02:00
parent 36e7fd09ee
commit 2077a58c21
1 changed files with 48 additions and 28 deletions
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76
dlls/opengl32/wgl.c
View File

@ -65,16 +65,21 @@ enum wgl_handle_type
HANDLE_TYPE_MASK = 15 << 12
};
struct opengl_context
{
DWORD tid; /* thread that the context is current in */
struct wgl_context *drv_ctx; /* driver context */
};
struct wgl_handle
{
UINT handle;
DWORD tid;
struct opengl_funcs *funcs;
union
{
struct wgl_context *context; /* for HANDLE_CONTEXT */
struct wgl_pbuffer *pbuffer; /* for HANDLE_PBUFFER */
struct wgl_handle *next; /* for free handles */
struct opengl_context *context; /* for HANDLE_CONTEXT */
struct wgl_pbuffer *pbuffer; /* for HANDLE_PBUFFER */
struct wgl_handle *next; /* for free handles */
} u;
};
@ -183,7 +188,8 @@ BOOL WINAPI wglCopyContext(HGLRC hglrcSrc, HGLRC hglrcDst, UINT mask)
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, dst->u.context, mask );
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 );
@ -199,14 +205,15 @@ BOOL WINAPI wglDeleteContext(HGLRC hglrc)
if (!ptr) return FALSE;
if (ptr->tid && ptr->tid != GetCurrentThreadId())
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 );
ptr->funcs->wgl.p_wglDeleteContext( ptr->u.context->drv_ctx );
HeapFree( GetProcessHeap(), 0, ptr->u.context );
free_handle_ptr( ptr );
return TRUE;
}
@ -222,13 +229,13 @@ BOOL WINAPI wglMakeCurrent(HDC hdc, HGLRC hglrc)
if (hglrc)
{
if (!(ptr = get_handle_ptr( hglrc, HANDLE_CONTEXT ))) return FALSE;
if (!ptr->tid || ptr->tid == GetCurrentThreadId())
if (!ptr->u.context->tid || ptr->u.context->tid == GetCurrentThreadId())
{
ret = ptr->funcs->wgl.p_wglMakeCurrent( hdc, ptr->u.context );
ret = ptr->funcs->wgl.p_wglMakeCurrent( hdc, ptr->u.context->drv_ctx );
if (ret)
{
if (prev) prev->tid = 0;
ptr->tid = GetCurrentThreadId();
if (prev) prev->u.context->tid = 0;
ptr->u.context->tid = GetCurrentThreadId();
NtCurrentTeb()->glCurrentRC = hglrc;
NtCurrentTeb()->glTable = ptr->funcs;
}
@ -243,7 +250,7 @@ BOOL WINAPI wglMakeCurrent(HDC hdc, HGLRC hglrc)
else if (prev)
{
if (!prev->funcs->wgl.p_wglMakeCurrent( 0, NULL )) return FALSE;
prev->tid = 0;
prev->u.context->tid = 0;
NtCurrentTeb()->glCurrentRC = 0;
NtCurrentTeb()->glTable = &null_opengl_funcs;
}
@ -263,17 +270,23 @@ BOOL WINAPI wglMakeCurrent(HDC hdc, HGLRC hglrc)
HGLRC WINAPI wglCreateContextAttribsARB( HDC hdc, HGLRC share, const int *attribs )
{
HGLRC ret = 0;
struct wgl_context *context;
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 || !funcs->ext.p_wglCreateContextAttribsARB) return 0;
if (share && !(share_ptr = get_handle_ptr( share, HANDLE_CONTEXT ))) return 0;
if ((context = funcs->ext.p_wglCreateContextAttribsARB( hdc, share_ptr ? share_ptr->u.context : NULL,
attribs )))
if ((drv_ctx = funcs->ext.p_wglCreateContextAttribsARB( hdc,
share_ptr ? share_ptr->u.context->drv_ctx : NULL, attribs )))
{
ret = alloc_handle( HANDLE_CONTEXT, funcs, context );
if (!ret) funcs->wgl.p_wglDeleteContext( context );
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 );
}
release_handle_ptr( share_ptr );
return ret;
@ -293,14 +306,15 @@ BOOL WINAPI wglMakeContextCurrentARB( HDC draw_hdc, HDC read_hdc, HGLRC hglrc )
if (hglrc)
{
if (!(ptr = get_handle_ptr( hglrc, HANDLE_CONTEXT ))) return FALSE;
if (!ptr->tid || ptr->tid == GetCurrentThreadId())
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 ));
ptr->funcs->ext.p_wglMakeContextCurrentARB( draw_hdc, read_hdc,
ptr->u.context->drv_ctx ));
if (ret)
{
if (prev) prev->tid = 0;
ptr->tid = GetCurrentThreadId();
if (prev) prev->u.context->tid = 0;
ptr->u.context->tid = GetCurrentThreadId();
NtCurrentTeb()->glCurrentRC = hglrc;
NtCurrentTeb()->glTable = ptr->funcs;
}
@ -315,7 +329,7 @@ BOOL WINAPI wglMakeContextCurrentARB( HDC draw_hdc, HDC read_hdc, HGLRC hglrc )
else if (prev)
{
if (!prev->funcs->wgl.p_wglMakeCurrent( 0, NULL )) return FALSE;
prev->tid = 0;
prev->u.context->tid = 0;
NtCurrentTeb()->glCurrentRC = 0;
NtCurrentTeb()->glTable = &null_opengl_funcs;
}
@ -347,7 +361,7 @@ BOOL WINAPI wglShareLists(HGLRC hglrcSrc, HGLRC hglrcDst)
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, dst->u.context );
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 );
@ -361,7 +375,7 @@ HDC WINAPI wglGetCurrentDC(void)
{
struct wgl_handle *context = get_current_context_ptr();
if (!context) return 0;
return context->funcs->wgl.p_wglGetCurrentDC( context->u.context );
return context->funcs->wgl.p_wglGetCurrentDC( context->u.context->drv_ctx );
}
/***********************************************************************
@ -370,13 +384,19 @@ HDC WINAPI wglGetCurrentDC(void)
HGLRC WINAPI wglCreateContext(HDC hdc)
{
HGLRC ret = 0;
struct wgl_context *context;
struct wgl_context *drv_ctx;
struct opengl_context *context;
struct opengl_funcs *funcs = get_dc_funcs( hdc );
if (!funcs) return 0;
if (!(context = funcs->wgl.p_wglCreateContext( hdc ))) return 0;
ret = alloc_handle( HANDLE_CONTEXT, funcs, context );
if (!ret) funcs->wgl.p_wglDeleteContext( context );
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;
}