From 47798568f3f05b8267ae3700369a4a396073ef97 Mon Sep 17 00:00:00 2001
From: HampusM <hampus@hampusmat.com>
Date: Wed, 25 Oct 2023 20:31:56 +0200
Subject: feat(engine): enable depth testing

---
 engine/src/opengl/mod.rs   | 14 ++++++++++++++
 engine/src/renderer/mod.rs |  6 ++++--
 2 files changed, 18 insertions(+), 2 deletions(-)

(limited to 'engine')

diff --git a/engine/src/opengl/mod.rs b/engine/src/opengl/mod.rs
index 6f95a1f..4f4f96f 100644
--- a/engine/src/opengl/mod.rs
+++ b/engine/src/opengl/mod.rs
@@ -33,6 +33,13 @@ pub fn clear_buffers(mask: BufferClearMask)
     }
 }
 
+pub fn enable(capacity: Capability)
+{
+    unsafe {
+        gl::Enable(capacity as u32);
+    }
+}
+
 bitflags! {
     #[derive(Debug, Clone, Copy)]
     pub struct BufferClearMask: u32 {
@@ -41,3 +48,10 @@ bitflags! {
         const STENCIL = gl::STENCIL_BUFFER_BIT;
     }
 }
+
+#[derive(Debug)]
+#[repr(u32)]
+pub enum Capability
+{
+    DepthTest = gl::DEPTH_TEST,
+}
diff --git a/engine/src/renderer/mod.rs b/engine/src/renderer/mod.rs
index aa828fe..4dcc075 100644
--- a/engine/src/renderer/mod.rs
+++ b/engine/src/renderer/mod.rs
@@ -16,7 +16,7 @@ use crate::opengl::buffer::{
 use crate::opengl::debug::{MessageSeverity, MessageSource, MessageType};
 use crate::opengl::shader::Program as ShaderProgram;
 use crate::opengl::vertex_array::{PrimitiveKind, VertexArray};
-use crate::opengl::{clear_buffers, BufferClearMask};
+use crate::opengl::{clear_buffers, enable, BufferClearMask, Capability};
 use crate::projection::new_perspective;
 use crate::vector::Vec2;
 use crate::vertex::Vertex;
@@ -59,6 +59,8 @@ pub fn initialize(window: &glfw::Window) -> Result<(), Error>
 
     set_viewport(&Vec2 { x: 0, y: 0 }, &window_size);
 
+    enable(Capability::DepthTest);
+
     Ok(())
 }
 
@@ -107,7 +109,7 @@ pub fn render<'obj>(
     camera: &Camera,
 )
 {
-    clear_buffers(BufferClearMask::COLOR);
+    clear_buffers(BufferClearMask::COLOR | BufferClearMask::DEPTH);
 
     for obj in objects {
         obj.renderable().shader_program.activate();
-- 
cgit v1.2.3-18-g5258