Added shader loading, added glad

assets/shaders/test.vert

@@ -0,0 +1,17 @@
+#version 330 core
+#extension GL_ARB_separate_shader_objects : enable
+
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec2 aTexCoord;
+
+uniform mat4 uniform_MVP;
+uniform mat4 uniform_MP;
+
+out vec2 TexCoord;
+
+void main() {
+  vec3 pos = aPos;
+
+  gl_Position = uniform_MVP * uniform_MP * vec4(pos, 1);
+  TexCoord = vec2(aTexCoord.x, aTexCoord.y);
+}