add SciTech's GLDirect driver for Windows.

This code is donated to Mesa which allows the usage of
a Direct3D layer (DX7, DX8, DX9 or complete software fallback).

No build system exists for this code yet, that will come.....

1 files changed, 91 insertions, 0 deletions

diff --git a/src/mesa/drivers/windows/gldirect/dglmacros.h b/src/mesa/drivers/windows/gldirect/dglmacros.h
new file mode 100644
index 0000000000..aed0f2110e
--- /dev/null
+++ b/src/mesa/drivers/windows/gldirect/dglmacros.h
@@ -0,0 +1,91 @@
+/****************************************************************************
+*
+*                        Mesa 3-D graphics library
+*                        Direct3D Driver Interface
+*
+*  ========================================================================
+*
+*   Copyright (C) 1991-2004 SciTech Software, Inc. 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, sublicense,
+*   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 above copyright notice and this permission notice shall be included
+*   in all copies or substantial portions of the Software.
+*
+*   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 NONINFRINGEMENT.  IN NO EVENT SHALL
+*   SCITECH SOFTWARE INC 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.
+*
+*  ======================================================================
+*
+* Language:     ANSI C
+* Environment:  Windows 9x (Win32)
+*
+* Description:  Useful generic macros.
+*
+****************************************************************************/
+
+#ifndef __DGLMACROS_H
+#define __DGLMACROS_H
+
+#include <ddraw.h>
+
+// Define the relevant RELEASE macro depending on C or C++
+#if !defined(__cplusplus) || defined(CINTERFACE)
+	// Standard C version
+	#define RELEASE(x) if (x!=NULL) { x->lpVtbl->Release(x); x=NULL; }
+#else
+	// C++ version
+	#define RELEASE(x) if (x!=NULL) { x->Release(); x=NULL; }
+#endif
+
+// We don't want a message *every* time we call an unsupported function
+#define UNSUPPORTED(x)												\
+	{																\
+		static BOOL bFirstTime = TRUE;								\
+		if (bFirstTime) {											\
+			bFirstTime = FALSE;										\
+			ddlogError(DDLOG_WARN, (x), DDERR_CURRENTLYNOTAVAIL);	\
+		}															\
+	}
+
+#define DGL_CHECK_CONTEXT		\
+	if (ctx == NULL) return;
+
+// Don't render if bCanRender is not TRUE.
+#define DGL_CHECK_RENDER		\
+	if (!dgl->bCanRender) return;
+
+#if 0
+#define TRY(a,b) (a)
+#define TRY_ERR(a,b) (a)
+#else
+// hResult should be defined in the function
+// Return codes should be checked via SUCCEDDED and FAILED macros
+#define TRY(a,b)									\
+	{												\
+		if (FAILED(hResult=(a)))					\
+			ddlogError(DDLOG_ERROR, (b), hResult);	\
+	}
+
+// hResult is a global
+// The label exit_with_error should be defined within the calling scope
+#define TRY_ERR(a,b)								\
+	{												\
+		if (FAILED(hResult=(a))) {					\
+			ddlogError(DDLOG_ERROR, (b), hResult);	\
+			goto exit_with_error;					\
+		}											\
+	}
+#endif // #if 1
+
+#endif