From 6030a12341c4858d44cfcfafa96328122b9244d2 Mon Sep 17 00:00:00 2001
From: Chris Young <chris@unsatisfactorysoftware.co.uk>
Date: Mon, 17 Aug 2009 11:48:56 +0000
Subject: [PATCH] Revert back to creating a new clip region rather than reusing
 the previous one.  This fixes the long-standing incremental_reflow problem,
 as apparently ClearClipRegion can't cope with the frequency of calls it gets
 with this switched on.

svn path=/trunk/netsurf/; revision=9333
---
 amiga/dist/Install |  1 -
 amiga/plotters.c   | 22 +++++++---------------
 2 files changed, 7 insertions(+), 16 deletions(-)

diff --git a/amiga/dist/Install b/amiga/dist/Install
index 29646ea97..7aa9eaa2a 100755
--- a/amiga/dist/Install
+++ b/amiga/dist/Install
@@ -370,7 +370,6 @@
 			(dest (tackon @default-dest "Resources/Options"))
 			(append "theme:" #theme "\n")
 			(append "use_pubscreen:Workbench\n")
-			(append "incremental_reflow:0\n")
 		)
 	)
 )
diff --git a/amiga/plotters.c b/amiga/plotters.c
index adbdf39e2..e6a8004e2 100755
--- a/amiga/plotters.c
+++ b/amiga/plotters.c
@@ -327,8 +327,6 @@ bool ami_polygon(const int *p, unsigned int n, const plot_style_t *style)
 #ifndef NS_AMIGA_CAIRO
 	ULONG cx,cy;
 
-	//DebugPrintF("poly\n");
-
 	SetRPAttrs(&glob->rp,
 		   RPTAG_APenColor,
 		   p96EncodeColor(RGBFB_A8B8G8R8, style->fill_colour),
@@ -369,17 +367,7 @@ bool ami_clip(int x0, int y0, int x1, int y1)
 
 	if(glob->rp.Layer)
 	{
-
-		reg = InstallClipRegion(glob->rp.Layer,NULL);
-
-		if(!reg)
-		{
-			reg = NewRegion();
-		}
-		else
-		{
-			ClearRectRegion(reg,&glob->rect);
-		}
+		reg = NewRegion();
 
 		glob->rect.MinX = x0;
 		glob->rect.MinY = y0;
@@ -389,6 +377,7 @@ bool ami_clip(int x0, int y0, int x1, int y1)
 		OrRectRegion(reg,&glob->rect);
 
 		reg = InstallClipRegion(glob->rp.Layer,reg);
+
 		if(reg) DisposeRegion(reg);
 	}
 
@@ -397,6 +386,7 @@ bool ami_clip(int x0, int y0, int x1, int y1)
 	cairo_rectangle(glob->cr, x0, y0, x1 - x0, y1 - y0);
 	cairo_clip(glob->cr);
 #endif
+
 	return true;
 }
 
@@ -469,7 +459,6 @@ bool ami_arc(int x, int y, int radius, int angle1, int angle2, const plot_style_
 #else
 /* http://www.crbond.com/primitives.htm
 CommonFuncsPPC.lha */
-	//DebugPrintF("arc\n");
 
 	SetRPAttrs(&glob->rp,
                    RPTAG_APenColor,
@@ -552,6 +541,10 @@ bool ami_bitmap_tile(int x, int y, int width, int height,
 	if(!(repeat_x || repeat_y))
 		return ami_bitmap(x, y, width, height, bitmap);
 
+	/* If it is a one pixel transparent image, we are wasting our time */
+	if((bitmap->opaque == false) && (bitmap->width == 1) && (bitmap->height == 1))
+		return true;
+
 	tbm = ami_getcachenativebm(bitmap,width,height,glob->rp.BitMap);
 
 	if(!tbm) return true;
@@ -684,7 +677,6 @@ bool ami_group_end(void)
 
 bool ami_flush(void)
 {
-	//DebugPrintF("flush\n");
 	return true;
 }