- further cleanup of window matrix code. Now ALL 2d ortho calls are

using an identical offset; which is 0.375 and official recommended
  by OpenGL.
  This to further investigate the AA font errors on some systems
  with ATI cards.

source/blender/src/butspace.c

@@ -455,7 +455,7 @@ void drawbutspace(ScrArea *sa, void *spacedata)
 	sbuts->mainbo= sbuts->mainb;
 	sbuts->tabo= sbuts->tab[sbuts->mainb];
 
-	myortho2(-0.5, (float)(sa->winx)-.05, -0.5, (float)(sa->winy)-0.5);
+	myortho2(-0.5, (float)(sa->winx)-0.5, -0.5, (float)(sa->winy)-0.5);
 	draw_area_emboss(sa);
 	myortho2(v2d->cur.xmin, v2d->cur.xmax, v2d->cur.ymin, v2d->cur.ymax);
 

source/blender/src/buttons_scene.c

@@ -1068,7 +1068,7 @@ static void render_panel_anim()
 	
 	uiBlockSetCol(block, TH_AUTO);
 	uiDefBut(block, BUT,B_PLAYANIM, "PLAY",	692,40,94,33, 0, 0, 0, 0, 0, "Play animation of rendered images/avi (searches Pics: field)");
-	uiDefButS(block, NUM, B_RTCHANGED, "rt:",	790,40,95,33, &G.rt, 0.0, 256.0, 0, 0, "General testing/debug button");
+	uiDefButS(block, NUM, B_RTCHANGED, "rt:",	790,40,95,33, &G.rt, -1000.0, 1000.0, 0, 0, "General testing/debug button");
 
 	uiDefButS(block, NUM,REDRAWSEQ,"Sta:",	692,10,94,24, &G.scene->r.sfra,1.0,18000.0, 0, 0, "The start frame of the animation");
 	uiDefButS(block, NUM,REDRAWSEQ,"End:",	790,10,95,24, &G.scene->r.efra,1.0,18000.0, 0, 0, "The end  frame of the animation");

source/blender/src/drawimasel.c

@@ -142,7 +142,7 @@ void viewgate(short sx, short sy, short ex, short ey)
 	wx = curarea->winrct.xmin; wy = curarea->winrct.ymin;
 	glViewport(wx+sx, wy+sy, (wx+ex )-(wx+sx)+1, (wy+ey )-(wy+sy)+1); 
 	glScissor(wx+sx, wy+sy, (wx+ex )-(wx+sx)+1, (wy+ey )-(wy+sy)+1);
-	myortho2((float)sx+0.5 , (float)ex+0.5, (float)sy+0.5, (float)ey+0.5);
+	myortho2((float)sx-0.5 , (float)ex-0.5, (float)sy-0.5, (float)ey-0.5);
 }	
 	
 void areaview (void) 

source/blender/src/drawtext.c

@@ -552,7 +552,7 @@ void drawtextspace(ScrArea *sa, void *spacedata)
 	BIF_GetThemeColor3fv(TH_BACK, col);
 	glClearColor(col[0], col[1], col[2], 0.0);
 	glClear(GL_COLOR_BUFFER_BIT);
-	myortho2(-0.5, (float)(sa->winx)-.05, -0.5, (float)(sa->winy)-0.5);
+	myortho2(-0.5, (float)(sa->winx)-0.5, -0.5, (float)(sa->winy)-0.5);
 
 	draw_area_emboss(sa);
 

source/blender/src/editscreen.c

@@ -2926,7 +2926,7 @@ void drawscreen(void)
 	ScrArea *sa;
 
 	mywinset(G.curscreen->mainwin);
-	myortho2(-0.5, (float)G.curscreen->sizex-0.5, -0.51, (float)G.curscreen->sizey-0.51);
+	myortho2(-0.5, (float)G.curscreen->sizex-0.5, -0.5, (float)G.curscreen->sizey-0.5);
 
 	sa= G.curscreen->areabase.first;
 	while(sa) {

source/blender/src/mywindow.c

@@ -97,7 +97,7 @@ void mywindow_init_mainwin(Window *win, int orx, int ory, int sizex, int sizey)
 	mainwindow.ymax= ory+sizey-1;
 	mainwindow.qevents= NULL;
 
-	myortho2(-0.5, (float)sizex-0.5, -0.6, (float)sizey-0.6);
+	myortho2(-0.5, (float)sizex-0.5, -0.5, (float)sizey-0.5);
 	glLoadIdentity();
 		
 	glGetFloatv(GL_PROJECTION_MATRIX, (float *)mainwindow.winmat);
@@ -427,10 +427,15 @@ void mywinposition(int winid, int xmin, int xmax, int ymin, int ymax) /* watch:
 void bwin_ortho(int winid, float x1, float x2, float y1, float y2, float n, float f)
 {
 	bWindow *bwin= bwin_from_winid(winid);
+	float offs= 0.125;
 	
 	glMatrixMode(GL_PROJECTION);
 	glLoadIdentity();
-	glOrtho(x1, x2, y1, y2, n, f);
+	// in blender it's always called with -0.5... according to opengl
+	// manual it should be (-)0.375 for correctness. 
+	
+	//offs= 0.01*G.rt;
+	glOrtho(x1+offs, x2+offs, y1+offs, y2+offs, n, f);
 
 	glGetFloatv(GL_PROJECTION_MATRIX, (float *)bwin->winmat);
 	glMatrixMode(GL_MODELVIEW);
@@ -438,9 +443,7 @@ void bwin_ortho(int winid, float x1, float x2, float y1, float y2, float n, floa
 
 void bwin_ortho2(int win, float x1, float x2, float y1, float y2)
 {
-	// in blender it's always called with -0.5... according to opengl
-	// manual it should 0.375 for correctness. added for test
-	bwin_ortho(win, x1+0.125, x2+0.125, y1+0.125, y2+0.125, -1, 1);
+	bwin_ortho(win, x1, x2, y1, y2, -1, 1);
 }
 
 void bwin_frustum(int winid, float x1, float x2, float y1, float y2, float n, float f)

source/blender/src/space.c

@@ -2436,7 +2436,7 @@ void drawinfospace(ScrArea *sa, void *spacedata)
 
 	uiDrawBlock(block);
 	
-	myortho2(-0.5, (float)(sa->winx)-.05, -0.5, (float)(sa->winy)-0.5);
+	myortho2(-0.5, (float)(sa->winx)-0.5, -0.5, (float)(sa->winy)-0.5);
 	draw_area_emboss(sa);
 	myortho2(0.0, 1280.0, 0.0, curarea->winy/fac);
 	sa->win_swap= WIN_BACK_OK;
@@ -2537,7 +2537,7 @@ static void changebutspace(ScrArea *sa, void *spacedata)
 	if(G.v2d==0) return;
 	
 	test_view2d(G.v2d, curarea->winx, curarea->winy);
-	myortho2(G.v2d->cur.xmin, G.v2d->cur.xmax, G.v2d->cur.ymin-0.6, G.v2d->cur.ymax+0.6);
+	myortho2(G.v2d->cur.xmin, G.v2d->cur.xmax, G.v2d->cur.ymin, G.v2d->cur.ymax);
 }
 
 void winqreadbutspace(ScrArea *sa, void *spacedata, BWinEvent *evt)