Clean global variables.

examples/TinyRenderer/our_gl.cpp

@@ -4,10 +4,6 @@
 #include "our_gl.h"
 #include "Bullet3Common/b3MinMax.h"
 
-extern int indexmap[10000000];
-extern int count;
-extern bool setindex;
-
 IShader::~IShader() {}
 
 Matrix viewport(int x, int y, int w, int h) 
@@ -144,10 +140,6 @@ void triangle(mat<4,3,float> &clipc, IShader &shader, TGAImage &image, float *zb
             Vec3f bc_clip    = Vec3f(bc_screen.x/pts[0][3], bc_screen.y/pts[1][3], bc_screen.z/pts[2][3]);
             bc_clip = bc_clip/(bc_clip.x+bc_clip.y+bc_clip.z);
             float frag_depth = -1*(clipc[2]*bc_clip);
-            if (setindex)
-            {
-                indexmap[count] = P.x+P.y*image.get_width();
-            }
             if (bc_screen.x<0 || bc_screen.y<0 || bc_screen.z<0 ||
 				zbuffer[P.x+P.y*image.get_width()]>frag_depth) 
 				continue;