first and last commit

shaders/world.vsh

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+layout (location = 0) in vec3 pos;
+layout (location = 1) in vec3 norm;
+layout (location = 2) in vec2 coord;
+
+out vec3 vertex;
+out vec3 normal;
+out vec2 tex_coord;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+uniform sampler2D tex;
+uniform float density;
+
+void main() {
+	vertex = vec3(model * vec4(pos, 1.0));
+	normal = mat3(transpose(inverse(model))) * norm;  
+	tex_coord = coord * density / textureSize(tex, 0);
+	gl_Position = projection * view * vec4(vertex, 1.0);
+}