Revert "Fix export bug."

This reverts commit 1566850.

drawpath3.cc

@@ -87,9 +87,7 @@ void drawPath3::render(double size2, const triple& b, const triple& B,
   setMaterial(material1Data,drawMaterial1);
 
   bool offscreen;
-  if(gl::exporting)
-    offscreen=false;
-  else if(billboard) {
+  if(billboard) {
     drawElement::centerIndex=centerIndex;
     BB.init(center);
     offscreen=bbox2(Min,Max,BB).offscreen();
@@ -265,7 +263,7 @@ void drawPixel::render(double size2, const triple& b, const triple& B,
 
   setMaterial(material0Data,drawMaterial0);
 
-  if(!gl::exporting && bbox2(Min,Max).offscreen()) { // Fully offscreen
+  if(bbox2(Min,Max).offscreen()) { // Fully offscreen
     R.data.clear();
     return;
   }

drawsurface.cc

@@ -262,15 +262,13 @@ void drawBezierPatch::render(double size2, const triple& b, const triple& B,
   }
 
   bool offscreen;
-  if(gl::exporting)
-    offscreen=false;
-  else if(billboard) {
+  if(billboard) {
     drawElement::centerIndex=centerIndex;
     BB.init(center);
     offscreen=bbox2(Min,Max,BB).offscreen();
   } else
     offscreen=bbox2(Min,Max).offscreen();
-
+  
   if(offscreen) { // Fully offscreen
     S.Onscreen=false;
     S.data.clear();
@@ -505,9 +503,7 @@ void drawBezierTriangle::render(double size2, const triple& b, const triple& B,
   }
 
   bool offscreen;
-  if(gl::exporting)
-    offscreen=false;
-  else if(billboard) {
+  if(billboard) {
     drawElement::centerIndex=centerIndex;
     BB.init(center);
     offscreen=bbox2(Min,Max,BB).offscreen();
@@ -974,7 +970,7 @@ void drawTriangles::render(double size2, const triple& b,
 
   transparent=diffuse.A < 1.0;
 
-  if(!gl::exporting && bbox2(Min,Max).offscreen()) { // Fully offscreen
+  if(bbox2(Min,Max).offscreen()) { // Fully offscreen
     R.Onscreen=false;
     R.data.clear();
     return;

glrender.cc

@@ -108,7 +108,6 @@ namespace gl {
 bool outlinemode=false;
 bool glthread=false;
 bool initialize=true;
-bool exporting=false;
 
 using camp::picture;
 using camp::drawRawImage;
@@ -561,17 +560,13 @@ void Export()
       (orthographic ? trOrtho : trFrustum)(tr,xmin,xmax,ymin,ymax,-zmax,-zmin);
 
       size_t count=0;
-      exporting=true;
       do {
         trBeginTile(tr);
         drawscene(fullWidth,fullHeight);
         ++count;
       } while (trEndTile(tr));
-      exporting=false;
-
       if(settings::verbose > 1)
-        cout << count << " tile" << (count != 1 ? "s" : "") << " drawn"
-             << endl;
+        cout << count << " tile" << (count != 1 ? "s" : "") << " drawn" << endl;
       trDelete(tr);
 
       picture pic;

glrender.h

@@ -109,7 +109,6 @@ namespace gl {
 
 extern bool outlinemode;
 extern bool wireframeMode;
-extern bool exporting;
 
 extern bool orthographic;
 extern double xmin,xmax;