1 files changed, 112 insertions, 0 deletions
diff --git a/src/libs/graphics/gfx_common.h b/src/libs/graphics/gfx_common.h
new file mode 100644
index 0000000..e9e421a
--- /dev/null
+++ b/src/libs/graphics/gfx_common.h
@@ -0,0 +1,112 @@
+//Copyright Paul Reiche, Fred Ford. 1992-2002
+
+/*
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef GFX_COMMON_H
+#define GFX_COMMON_H
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "libs/gfxlib.h"
+
+// driver for TFB_InitGraphics
+enum
+{
+	TFB_GFXDRIVER_SDL_OPENGL,
+	TFB_GFXDRIVER_SDL_PURE,
+};
+
+// forced redraw
+enum
+{
+	TFB_REDRAW_NO = 0,
+	TFB_REDRAW_FADING,
+	TFB_REDRAW_EXPOSE,
+	TFB_REDRAW_YES
+};
+
+// flags for TFB_InitGraphics
+#define TFB_GFXFLAGS_FULLSCREEN         (1<<0)
+#define TFB_GFXFLAGS_SHOWFPS            (1<<1)
+#define TFB_GFXFLAGS_SCANLINES          (1<<2)
+#define TFB_GFXFLAGS_SCALE_BILINEAR     (1<<3)
+#define TFB_GFXFLAGS_SCALE_BIADAPT      (1<<4)
+#define TFB_GFXFLAGS_SCALE_BIADAPTADV   (1<<5)
+#define TFB_GFXFLAGS_SCALE_TRISCAN      (1<<6)
+#define TFB_GFXFLAGS_SCALE_HQXX         (1<<7)
+#define TFB_GFXFLAGS_SCALE_ANY \
+		( TFB_GFXFLAGS_SCALE_BILINEAR   | \
+		  TFB_GFXFLAGS_SCALE_BIADAPT    | \
+		  TFB_GFXFLAGS_SCALE_BIADAPTADV | \
+		  TFB_GFXFLAGS_SCALE_TRISCAN    | \
+		  TFB_GFXFLAGS_SCALE_HQXX )
+#define TFB_GFXFLAGS_SCALE_SOFT_ONLY \
+		( TFB_GFXFLAGS_SCALE_ANY & ~TFB_GFXFLAGS_SCALE_BILINEAR )
+
+// The flag variable itself
+extern int GfxFlags;
+
+// The following functions are driver-defined
+void TFB_PreInit (void);
+int TFB_InitGraphics (int driver, int flags, const char *renderer,
+		int width, int height);
+int TFB_ReInitGraphics (int driver, int flags, int width, int height);
+void TFB_UninitGraphics (void);
+void TFB_ProcessEvents (void);
+bool TFB_SetGamma (float gamma);
+void TFB_UploadTransitionScreen (void);
+int TFB_SupportsHardwareScaling (void);
+// This function should not be called directly
+void TFB_SwapBuffers (int force_full_redraw);
+
+#define GSCALE_IDENTITY 256
+
+typedef enum {
+	TFB_SCALE_STEP, /* not really a scaler */
+	TFB_SCALE_NEAREST,
+	TFB_SCALE_BILINEAR,
+	TFB_SCALE_TRILINEAR
+} SCALE;
+
+void LoadIntoExtraScreen (RECT *r);
+void DrawFromExtraScreen (RECT *r);
+int SetGraphicScale (int scale);
+int GetGraphicScale (void);
+int SetGraphicScaleMode (int mode /* enum SCALE */);
+int GetGraphicScaleMode (void);
+void SetTransitionSource (const RECT *pRect);
+void ScreenTransition (int transition, const RECT *pRect);
+
+// TODO: there should be accessor functions for these
+extern volatile int TransitionAmount;
+extern RECT TransitionClipRect;
+
+extern float FrameRate;
+extern int FrameRateTickBase;
+
+void TFB_FlushGraphics (void); // Only call from main thread!!
+void TFB_PurgeDanglingGraphics (void); // Only call from main thread as part of shutdown.
+
+extern int ScreenWidth;
+extern int ScreenHeight;
+extern int ScreenWidthActual;
+extern int ScreenHeightActual;
+extern int ScreenColorDepth;
+extern int GraphicsDriver;
+
+#endif