- removed many 'extern "C"' declarations, now that assembly is no longer a concern.

- some concepts about building a RenderViewpoint struct. No actual work yet.

src/doomstat.h

@@ -122,8 +122,8 @@ extern	bool	 		noblit;
 
 extern	int 			viewwindowx;
 extern	int 			viewwindowy;
-extern	"C" int 		viewheight;
-extern	"C" int 		viewwidth;
+extern	int 			viewheight;
+extern	int		 		viewwidth;
 
 
 

src/r_data/colormaps.cpp

@@ -57,10 +57,8 @@
 static bool R_CheckForFixedLights(const uint8_t *colormaps);
 
 
-extern "C" {
 FDynamicColormap NormalLight;
 FDynamicColormap FullNormalLight; //[SP] Emulate GZDoom brightness
-}
 bool NormalLightHasFixedLights;
 
 

src/r_data/colormaps.h

@@ -77,11 +77,8 @@ int AddSpecialColormap(float r1, float g1, float b1, float r2, float g2, float b
 
 
 extern uint8_t DesaturateColormap[31][256];
-extern "C" 
-{
 extern FDynamicColormap NormalLight;
 extern FDynamicColormap FullNormalLight;
-}
 extern bool NormalLightHasFixedLights;
 
 FDynamicColormap *GetSpecialLights (PalEntry lightcolor, PalEntry fadecolor, int desaturate);

src/r_state.h

@@ -33,8 +33,10 @@
 //	for rendering.
 //
 
-extern "C" int			viewwidth;
-extern "C" int			viewheight;
+extern int				viewwindowx;
+extern int				viewwindowy;
+extern int				viewwidth;
+extern int				viewheight;
 
 //
 // Lookup tables for map data.
@@ -65,10 +67,6 @@ extern int 				numgamesubsectors;
 //
 // POV data.
 //
-extern AActor*			camera;		// [RH] camera instead of viewplayer
-extern sector_t*		viewsector;	// [RH] keep track of sector viewing from
-
-extern DAngle			FieldOfView;
 
 int R_FindSkin (const char *name, int pclass);	// [RH] Find a skin
 

src/r_utility.cpp

@@ -103,6 +103,8 @@ CUSTOM_CVAR(Float, r_quakeintensity, 1.0f, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
 
 int 			viewwindowx;
 int 			viewwindowy;
+int				viewwidth;
+int 			viewheight;
 
 DVector3		ViewPos;
 DVector3		ViewActorPos;	// the actual position of the viewing actor, without interpolation and quake offsets.
@@ -110,27 +112,23 @@ DAngle			ViewAngle;
 DAngle			ViewPitch;
 DAngle			ViewRoll;
 DVector3		ViewPath[2];
+double	 		ViewCos, ViewTanCos;
+double	 		ViewSin, ViewTanSin;
 
-extern "C" 
-{
-		int 	viewwidth;
-		int 	viewheight;
-		int		centerx;
-		int		centery;
-		int		centerxwide;
-}
+
+int		centerx;
+int		centery;
+int		centerxwide;
 
 int				otic;
 
 sector_t		*viewsector;
 
-double	 		ViewCos, ViewTanCos;
-double	 		ViewSin, ViewTanSin;
 
 AActor			*camera;	// [RH] camera to draw from. doesn't have to be a player
 
 double			r_TicFracF;			// same as floating point
-uint32_t			r_FrameTime;		// [RH] Time this frame started drawing (in ms)
+uint32_t		r_FrameTime;		// [RH] Time this frame started drawing (in ms)
 bool			r_NoInterpolate;
 bool			r_showviewer;
 

src/r_utility.h

@@ -12,43 +12,77 @@ class FSerializer;
 // There a 0-31, i.e. 32 LUT in the COLORMAP lump.
 #define NUMCOLORMAPS			32
 
+struct FRenderViewpoint
+{
+	player_t		*player;		// For which player is this viewpoint being renderered? (can be null for camera textures)
+	DVector3		Pos;			// Camera position
+	DVector3		ActorPos;		// Camera actor's position
+	DRotator		Angles;			// Camera angles
+	DVector3		Path;			// View path for portal calculations
+	double			Cos;			// cos(Angles.Yaw)
+	double			Sin;			// sin(Angles.Yaw)
+	double			TanCos;			// FocalTangent * cos(Angles.Yaw)
+	double			TanSin;			// FocalTangent * sin(Angles.Yaw)
+
+	AActor			*camera;		// camera actor
+	sector_t		*sector;		// [RH] keep track of sector viewing from
+	DAngle			FieldOfView;	// current field of view
+
+	double			TicFrac;		// fraction of tic for interpolation
+	uint32_t		FrameTime;		// current frame's time in tics.
+	
+	int				extralight;		// extralight to be added to this viewpoint
+	bool			showviewer;		// show the camera actor?
+};
+
 extern DVector3			ViewPos;
 extern DVector3			ViewActorPos;
 extern DAngle			ViewAngle;
 extern DAngle			ViewPitch;
 extern DAngle			ViewRoll;
 extern DVector3			ViewPath[2];
-
 extern double			ViewCos;
 extern double			ViewSin;
-extern int				viewwindowx;
-extern int				viewwindowy;
-
-extern "C" int			centerx, centerxwide;
-extern "C" int			centery;
-
-extern int				setblocks;
-
 extern double			ViewTanCos;
 extern double			ViewTanSin;
-extern double			FocalTangent;
+extern AActor*			camera;		// [RH] camera instead of viewplayer
+extern sector_t*		viewsector;	// [RH] keep track of sector viewing from
+extern DAngle			FieldOfView;
+extern double			r_TicFracF;
+extern uint32_t			r_FrameTime;
+extern int				extralight;
+extern bool r_showviewer;
 
+//-----------------------------------
+struct FViewWindow
+{
+	double FocalTangent;
+	int centerx;
+	int centerxwide;
+	int centery;
+	float WidescreenRatio;
+};
+
+extern int			centerx, centerxwide;
+extern int			centery;
+extern double		FocalTangent;
+extern float		WidescreenRatio;
+
+//-----------------------------------
+
+
+extern int				setblocks;
 extern bool				r_NoInterpolate;
 extern int				validcount;
 
 extern angle_t			LocalViewAngle;			// [RH] Added to consoleplayer's angle
 extern int				LocalViewPitch;			// [RH] Used directly instead of consoleplayer's pitch
 extern bool				LocalKeyboardTurner;	// [RH] The local player used the keyboard to turn, so interpolate
-extern float			WidescreenRatio;
 
-extern double			r_TicFracF;
-extern uint32_t			r_FrameTime;
-extern int				extralight;
 extern unsigned int		R_OldBlend;
 
 const double			r_Yaspect = 200.0;		// Why did I make this a variable? It's never set anywhere.
 
-extern bool r_showviewer;
 
 //==========================================================================
 //

src/v_pfx.cpp

@@ -37,11 +37,8 @@
 #include "v_palette.h"
 #include "v_pfx.h"
 
-extern "C"
-{
-	PfxUnion GPfxPal;
-	PfxState GPfx;
-}
+PfxUnion GPfxPal;
+PfxState GPfx;
 
 static bool AnalyzeMask (uint32_t mask, uint8_t *shift);
 

src/v_pfx.h

@@ -77,10 +77,7 @@ struct PfxState
 		fixed_t xstep, fixed_t ystep, fixed_t xfrac, fixed_t yfrac);
 };
 
-extern "C"
-{
-	extern PfxUnion GPfxPal;
-	extern PfxState GPfx;
-}
+extern PfxUnion GPfxPal;
+extern PfxState GPfx;
 
 #endif //__V_PFX_H__

src/v_video.cpp

@@ -142,13 +142,11 @@ int DisplayWidth, DisplayHeight, DisplayBits;
 
 FFont *SmallFont, *SmallFont2, *BigFont, *ConFont, *IntermissionFont;
 
-extern "C" {
 uint32_t Col2RGB8[65][256];
 uint32_t *Col2RGB8_LessPrecision[65];
 uint32_t Col2RGB8_Inverse[65][256];
 ColorTable32k RGB32k;
 ColorTable256k RGB256k;
-}
 
 
 static uint32_t Col2RGB8_2[63][256];

src/v_video.h

@@ -475,7 +475,7 @@ union ColorTable32k
 	uint8_t RGB[32][32][32];
 	uint8_t All[32 *32 *32];
 };
-extern "C" ColorTable32k RGB32k;
+extern ColorTable32k RGB32k;
 
 // [SP] RGB666 support
 union ColorTable256k
@@ -483,24 +483,24 @@ union ColorTable256k
 	uint8_t RGB[64][64][64];
 	uint8_t All[64 *64 *64];
 };
-extern "C" ColorTable256k RGB256k;
+extern ColorTable256k RGB256k;
 
 // Col2RGB8 is a pre-multiplied palette for color lookup. It is stored in a
 // special R10B10G10 format for efficient blending computation.
 //		--RRRRRrrr--BBBBBbbb--GGGGGggg--   at level 64
 //		--------rrrr------bbbb------gggg   at level 1
-extern "C" uint32_t Col2RGB8[65][256];
+extern uint32_t Col2RGB8[65][256];
 
 // Col2RGB8_LessPrecision is the same as Col2RGB8, but the LSB for red
 // and blue are forced to zero, so if the blend overflows, it won't spill
 // over into the next component's value.
 //		--RRRRRrrr-#BBBBBbbb-#GGGGGggg--  at level 64
 //      --------rrr#------bbb#------gggg  at level 1
-extern "C" uint32_t *Col2RGB8_LessPrecision[65];
+extern uint32_t *Col2RGB8_LessPrecision[65];
 
 // Col2RGB8_Inverse is the same as Col2RGB8_LessPrecision, except the source
 // palette has been inverted.
-extern "C" uint32_t Col2RGB8_Inverse[65][256];
+extern uint32_t Col2RGB8_Inverse[65][256];
 
 // "Magic" numbers used during the blending:
 //		--000001111100000111110000011111	= 0x01f07c1f

src/x86.cpp

@@ -2,10 +2,7 @@
 #include "doomdef.h"
 #include "x86.h"
 
-extern "C"
-{
-	CPUInfo CPU;
-}
+CPUInfo CPU;
 
 #if !defined(__amd64__) && !defined(__i386__) && !defined(_M_IX86) && !defined(_M_X64)
 void CheckCPUID(CPUInfo *cpu)

src/x86.h

@@ -100,7 +100,7 @@ struct CPUInfo	// 92 bytes
 };
 
 
-extern "C" CPUInfo CPU;
+extern CPUInfo CPU;
 struct PalEntry;
 
 void CheckCPUID (CPUInfo *cpu);