shaders now compile and link correctly

- map still invisible
- frustum defined
- shaders fixed
- attrib-link to shaders fixed
- lookat now generates a frustum-projected look-at matrix
- smaller test-map for debug

shaders/fragment.shader

@@ -1,4 +1,4 @@
-#version 140
+#version 330
 
 //color from earlier stages
 smooth in vec4 fg_SmoothColor;

shaders/vertex.shader

@@ -1,18 +1,20 @@
-#version 140
+#version 330
 
 //constant projection matrix
 uniform mat4 fg_ProjectionMatrix;
 
 //vertex-data
 in vec4 fg_Color;
-in vec4 fg_Vertex;
-in vec4 fg_Normal;
+in vec3 fg_VertexIn;
+in vec3 fg_Normal;
 
 //output-data for later stages
 smooth out vec4 fg_SmoothColor;
 
 void main()
 {
-   fg_SmoothColor = fg_Color;
+   //transform vec3 into vec4, setting w to 1
+   vec4 fg_Vertex = vec4(fg_VertexIn, 1.0);
+   fg_SmoothColor = fg_Color + 0.001* fg_Normal.xyzx;
    gl_Position = fg_ProjectionMatrix * fg_Vertex;
 }