Create files for clip, draw and portal segments

src/swrenderer/scene/r_draw_segment.cpp

@@ -0,0 +1,49 @@
+
+#include <stdlib.h>
+#include "templates.h"
+#include "doomdef.h"
+#include "m_bbox.h"
+#include "i_system.h"
+#include "p_lnspec.h"
+#include "p_setup.h"
+#include "swrenderer/r_main.h"
+#include "r_plane.h"
+#include "swrenderer/drawers/r_draw.h"
+#include "r_things.h"
+#include "r_3dfloors.h"
+#include "a_sharedglobal.h"
+#include "g_level.h"
+#include "p_effect.h"
+#include "doomstat.h"
+#include "r_state.h"
+#include "r_bsp.h"
+#include "r_segs.h"
+#include "v_palette.h"
+#include "r_sky.h"
+#include "po_man.h"
+#include "r_data/colormaps.h"
+#include "r_draw_segment.h"
+
+namespace swrenderer
+{
+	size_t MaxDrawSegs;
+	drawseg_t *drawsegs;
+	drawseg_t *firstdrawseg;
+	drawseg_t *ds_p;
+
+	size_t FirstInterestingDrawseg;
+	TArray<size_t> InterestingDrawsegs;
+
+	void R_ClearDrawSegs()
+	{
+		if (drawsegs == NULL)
+		{
+			MaxDrawSegs = 256; // [RH] Default. Increased as needed.
+			firstdrawseg = drawsegs = (drawseg_t *)M_Malloc (MaxDrawSegs * sizeof(drawseg_t));
+		}
+		FirstInterestingDrawseg = 0;
+		InterestingDrawsegs.Clear ();
+		ds_p = drawsegs;
+	}
+
+}