From f832e30669e7a9144050038d08ca5888df4fcddc Mon Sep 17 00:00:00 2001
From: Alfredo de Greef <eeshlo@yahoo.com>
Date: Tue, 6 Jun 2006 01:57:07 +0000
Subject: Added support for linked objects from libraries which can have names
 that are already defined locally, probably does not work fully yet. Added
 extra 'threads' parameter as requested by Lynx3d.

Optimized drawing of rendered tiles, so that the entire image doesn't have
to be redrawn every time a tile is complete.
The blender code that handles this part was not yet complete and could only
draw (sets of) scanlines. I extended the renderwin_progress() function in
renderwin.c to handle a given subrectangle.
This code needs review!
For the limited test I did it seems to work at least...
---
 source/blender/src/renderwin.c | 30 +++++++++++++++++-------------
 1 file changed, 17 insertions(+), 13 deletions(-)

(limited to 'source/blender/src/renderwin.c')

diff --git a/source/blender/src/renderwin.c b/source/blender/src/renderwin.c
index 64d64ad9da5..8aade84fe83 100644
--- a/source/blender/src/renderwin.c
+++ b/source/blender/src/renderwin.c
@@ -797,7 +797,7 @@ static void renderwin_progress(RenderWin *rw, RenderResult *rr, volatile rcti *r
 	rcti win_rct;
 	float *rectf= NULL, fullrect[2][2];
 	unsigned int *rect32= NULL;
-	int ymin, ymax;
+	int ymin, ymax, xmin, xmax;
 	
 	/* if renrect argument, we only display scanlines */
 	if(renrect) {
@@ -805,15 +805,21 @@ static void renderwin_progress(RenderWin *rw, RenderResult *rr, volatile rcti *r
 		if(rr->renlay==NULL || renrect->ymax>=rr->recty)
 			return;
 		
+		/* xmin here is first subrect x coord, xmax defines subrect width */
+		xmin = renrect->xmin;
+		xmax = renrect->xmax - xmin;
+		if (xmax<2) return;
+		
 		ymin= renrect->ymin;
-		ymax= renrect->ymax-ymin;
+		ymax= renrect->ymax - ymin;
 		if(ymax<2)
 			return;
 		renrect->ymin= renrect->ymax;
 	}
 	else {
-		ymin= 0;
-		ymax= rr->recty-2*rr->crop;
+		xmin = ymin = 0;
+		xmax = rr->rectx - 2*rr->crop;
+		ymax = rr->recty - 2*rr->crop;
 	}
 	
 	/* renderwindow cruft */
@@ -835,7 +841,7 @@ static void renderwin_progress(RenderWin *rw, RenderResult *rr, volatile rcti *r
 	}
 	if(rectf) {
 		/* if scanline updates... */
-		rectf+= 4*rr->rectx*ymin;
+		rectf+= 4*(rr->rectx*ymin + xmin);
 	
 		/* when rendering more pixels than needed, we crop away cruft */
 		if(rr->crop)
@@ -844,8 +850,8 @@ static void renderwin_progress(RenderWin *rw, RenderResult *rr, volatile rcti *r
 	
 	/* tilerect defines drawing offset from (0,0) */
 	/* however, tilerect (xmin, ymin) is first pixel */
-	fullrect[0][0] += (rr->tilerect.xmin+rr->crop)*rw->zoom;
-	fullrect[0][1] += (rr->tilerect.ymin+rr->crop + ymin)*rw->zoom;
+	fullrect[0][0] += (rr->tilerect.xmin + rr->crop + xmin)*rw->zoom;
+	fullrect[0][1] += (rr->tilerect.ymin + rr->crop + ymin)*rw->zoom;
 
 	glEnable(GL_SCISSOR_TEST);
 	glaDefine2DArea(&win_rct);
@@ -855,13 +861,11 @@ static void renderwin_progress(RenderWin *rw, RenderResult *rr, volatile rcti *r
 	glDrawBuffer(GL_FRONT);
 #endif
 	glPixelZoom(rw->zoom, rw->zoom);
-	
+
 	if(rect32)
-		glaDrawPixelsSafe(fullrect[0][0], fullrect[0][1], rr->rectx-2*rr->crop, ymax, rr->rectx, 
-							   GL_RGBA, GL_UNSIGNED_BYTE, rect32);
-	else 
-		glaDrawPixelsSafe_to32(fullrect[0][0], fullrect[0][1], rr->rectx-2*rr->crop, ymax, rr->rectx, 
-					  GL_RGBA, GL_FLOAT, rectf);
+		glaDrawPixelsSafe(fullrect[0][0], fullrect[0][1], xmax, ymax, rr->rectx, GL_RGBA, GL_UNSIGNED_BYTE, rect32);
+	else
+		glaDrawPixelsSafe_to32(fullrect[0][0], fullrect[0][1], xmax, ymax, rr->rectx, GL_RGBA, GL_FLOAT, rectf);
 	
 	glPixelZoom(1.0, 1.0);
 	
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