small cleaning

src/types.h

@@ -1,3 +1,6 @@
+#include "linmath.h"
+#include <glad/gl.h>
+
 #ifndef TYPES_H
 #define TYPES_H
 
@@ -5,6 +8,26 @@ struct Parameters {
   // TODO
 };
 
+typedef struct Vertex {
+  vec2 pos;
+} Vertex;
+
+typedef struct ShaderProgram {
+  GLuint program;
+
+  GLuint vertex_buffer;
+
+  GLuint vertex_shader;
+  GLuint fragment_shader;
+
+  GLuint mvp_location;
+  GLuint vpos_location;
+  GLuint itime_location;
+  GLuint ires_location;
+
+  GLuint vertex_array;
+} ShaderProgram;
+
 typedef struct Parameters parameters;
 
 #endif