- pass clip rect as pointer to F2DDrawer::AddLine.

src/am_map.cpp

@@ -1745,7 +1745,7 @@ void DAutomap::drawMline (mline_t *ml, const AMColor &color)
 			twod->AddThickLine(x1, y1, x2, y2, am_linethickness, color.RGB, uint8_t(am_linealpha * 255));
 		} else {
 			// Use more efficient thin line drawing routine.
-			twod->AddLine(x1, y1, x2, y2, -1, -1, INT_MAX, INT_MAX, color.RGB, uint8_t(am_linealpha * 255));
+			twod->AddLine(x1, y1, x2, y2, nullptr, color.RGB, uint8_t(am_linealpha * 255));
 		}
 	}
 }

src/common/2d/v_2ddrawer.cpp

@@ -1040,19 +1040,19 @@ void F2DDrawer::ClearScreen(PalEntry color)
 //
 //==========================================================================
 
-void F2DDrawer::AddLine(double x1, double y1, double x2, double y2, int clipx1, int clipy1, int clipx2, int clipy2, uint32_t color, uint8_t alpha)
+void F2DDrawer::AddLine(double x1, double y1, double x2, double y2, const IntRect* clip, uint32_t color, uint8_t alpha)
 {
 	PalEntry p = (PalEntry)color;
 	p.a = alpha;
 
 	RenderCommand dg;
 
-	if (clipx1 > 0 || clipy1 > 0 || clipx2 < GetWidth()- 1 || clipy2 < GetHeight() - 1)
+	if (clip != nullptr)
 	{
-		dg.mScissor[0] = clipx1     + int(offset.X);
+		dg.mScissor[0] = clip->Left() + int(offset.X);
-		dg.mScissor[1] = clipy1     + int(offset.Y);
+		dg.mScissor[1] = clip->Top() + int(offset.Y);
-		dg.mScissor[2] = clipx2 + 1 + int(offset.X);
+		dg.mScissor[2] = clip->Right() + int(offset.X);
-		dg.mScissor[3] = clipy2 + 1 + int(offset.Y);
+		dg.mScissor[3] = clip->Bottom() + int(offset.Y);
 		dg.mFlags |= DTF_Scissor;
 	}
 

src/common/2d/v_2ddrawer.h

@@ -11,6 +11,7 @@
 
 struct DrawParms;
 struct FColormap;
+struct IntRect;
 
 class DShape2DTransform : public DObject
 {
@@ -226,7 +227,7 @@ public:
 	void AddClear(int left, int top, int right, int bottom, int palcolor, uint32_t color);
 
 
-	void AddLine(double x1, double y1, double x2, double y2, int cx, int cy, int cx2, int cy2, uint32_t color, uint8_t alpha = 255);
+	void AddLine(double x1, double y1, double x2, double y2, const IntRect* clip, uint32_t color, uint8_t alpha = 255);
 	void AddThickLine(int x1, int y1, int x2, int y2, double thickness, uint32_t color, uint8_t alpha = 255);
 	void AddPixel(int x1, int y1, uint32_t color);
 

src/common/2d/v_draw.cpp

@@ -1564,7 +1564,7 @@ void VirtualToRealCoordsInt(F2DDrawer *drawer, int &x, int &y, int &w, int &h,
 static void DrawLine(int x0, int y0, int x1, int y1, uint32_t realcolor, int alpha)
 {
 	if (!twod->HasBegun2D()) ThrowAbortException(X_OTHER, "Attempt to draw to screen outside a draw function");
-	twod->AddLine((float)x0, (float)y0, (float)x1, (float)y1, -1, -1, INT_MAX, INT_MAX, realcolor | MAKEARGB(255, 0, 0, 0), alpha);
+	twod->AddLine((float)x0, (float)y0, (float)x1, (float)y1, nullptr, realcolor | MAKEARGB(255, 0, 0, 0), alpha);
 }
 
 DEFINE_ACTION_FUNCTION_NATIVE(_Screen, DrawLine, DrawLine)
@@ -1589,7 +1589,7 @@ DEFINE_ACTION_FUNCTION(FCanvas, DrawLine)
 	PARAM_INT(y1);
 	PARAM_INT(color);
 	PARAM_INT(alpha);
-	self->Drawer.AddLine((float)x0, (float)y0, (float)x1, (float)y1, -1, -1, INT_MAX, INT_MAX, color | MAKEARGB(255, 0, 0, 0), alpha);
+	self->Drawer.AddLine((float)x0, (float)y0, (float)x1, (float)y1, nullptr, color | MAKEARGB(255, 0, 0, 0), alpha);
 	self->Tex->NeedUpdate();
 	return 0;
 }

src/common/utility/intrect.h

@@ -6,7 +6,6 @@ struct IntRect
 	int left, top;
 	int width, height;
 
-
 	void Offset(int xofs, int yofs)
 	{
 		left += xofs;
@@ -26,6 +25,27 @@ struct IntRect
 			height = y - top;
 	}
 
+	int Left() const
+	{
+		return left;
+	}
+
+	int Top() const
+	{
+		return top;
+	}
+
+
+	int Right() const
+	{
+		return left + width;
+	}
+
+	int Bottom() const
+	{
+		return top + height;
+	}
+
 
 };