feat(engine): add basic flat lighting

1 files changed, 36 insertions, 0 deletions

diff --git a/engine/src/opengl/shader.rs b/engine/src/opengl/shader.rs
index 3dc308e..4bf56aa 100644
--- a/engine/src/opengl/shader.rs
+++ b/engine/src/opengl/shader.rs
@@ -3,6 +3,7 @@ use std::ptr::null_mut;
 
 use crate::matrix::Matrix;
 use crate::opengl::currently_bound::CurrentlyBound;
+use crate::vector::Vec3;
 
 #[derive(Debug)]
 pub struct Shader
@@ -179,6 +180,41 @@ impl Program
         }
     }
 
+    pub fn set_uniform_vec_3fv(
+        &self,
+        _: &CurrentlyBound<Self>,
+        name: &CStr,
+        vec: &Vec3<f32>,
+    )
+    {
+        let uniform_location =
+            unsafe { gl::GetUniformLocation(self.program, name.as_ptr().cast()) };
+
+        unsafe {
+            gl::Uniform3fv(uniform_location, 1, vec.as_ptr());
+        }
+    }
+
+    pub fn set_uniform_1fv(&self, _: &CurrentlyBound<Self>, name: &CStr, num: f32)
+    {
+        let uniform_location =
+            unsafe { gl::GetUniformLocation(self.program, name.as_ptr().cast()) };
+
+        unsafe {
+            gl::Uniform1fv(uniform_location, 1, &num);
+        }
+    }
+
+    pub fn set_uniform_1uiv(&self, _: &CurrentlyBound<Self>, name: &CStr, num: u32)
+    {
+        let uniform_location =
+            unsafe { gl::GetUniformLocation(self.program, name.as_ptr().cast()) };
+
+        unsafe {
+            gl::Uniform1uiv(uniform_location, 1, &num);
+        }
+    }
+
     fn get_info_log(&self) -> String
     {
         let mut buf = vec![gl::types::GLchar::default(); 512];