add initial examples, replacing the 'Demos/Demos3'. Will make it work cross-platform, OpenGL3/OpenGL2 and add more examples to it.

examples/OpenGLWindow/Shaders/instancingPS.h

@@ -0,0 +1,34 @@
+//this file is autogenerated using stringify.bat (premake --stringify) in the build folder of this project
+static const char* instancingFragmentShader= \
+"#version 330\n"
+"precision highp float;\n"
+"in Fragment\n"
+"{\n"
+"     vec4 color;\n"
+"} fragment;\n"
+"in Vert\n"
+"{\n"
+"	vec2 texcoord;\n"
+"} vert;\n"
+"uniform sampler2D Diffuse;\n"
+"in vec3 lightDir,normal,ambient;\n"
+"out vec4 color;\n"
+"void main_textured(void)\n"
+"{\n"
+"   color  = vec4(0.1,0.2,0.3,0.3);\n"
+"}\n"
+"void main(void)\n"
+"{\n"
+"    vec4 texel = fragment.color*texture(Diffuse,vert.texcoord);//fragment.color;\n"
+"	vec3 ct,cf;\n"
+"	float intensity,at,af;\n"
+"	intensity = max(dot(lightDir,normalize(normal)),0);\n"
+"	cf = intensity*vec3(1.0,1.0,1.0)+ambient;\n"
+"	af = 1.0;\n"
+"		\n"
+"	ct = texel.rgb;\n"
+"	at = texel.a;\n"
+"		\n"
+"	color  = vec4(ct * cf, at * af);	\n"
+"}\n"
+;