add unmodified version of TinyRenderer, a 500 line software renderer with vertex and pixel shaders, texture mapping and Wavefront .obj support.

examples/TinyRenderer/our_gl.h

@@ -0,0 +1,22 @@
+#ifndef __OUR_GL_H__
+#define __OUR_GL_H__
+#include "tgaimage.h"
+#include "geometry.h"
+
+extern Matrix ModelView;
+extern Matrix Projection;
+
+void viewport(int x, int y, int w, int h);
+void projection(float coeff=0.f); // coeff = -1/c
+void lookat(Vec3f eye, Vec3f center, Vec3f up);
+
+struct IShader {
+    virtual ~IShader();
+    virtual Vec4f vertex(int iface, int nthvert) = 0;
+    virtual bool fragment(Vec3f bar, TGAColor &color) = 0;
+};
+
+//void triangle(Vec4f *pts, IShader &shader, TGAImage &image, float *zbuffer);
+void triangle(mat<4,3,float> &pts, IShader &shader, TGAImage &image, float *zbuffer);
+#endif //__OUR_GL_H__
+