From 450670dbfb153f00adf431ad77379042a9114ab0 Mon Sep 17 00:00:00 2001
From: HampusM <hampus@hampusmat.com>
Date: Sat, 18 Apr 2026 17:07:50 +0200
Subject: feat(engine): add scissor testing to renderer draw props

---
 engine/src/renderer/opengl.rs | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

(limited to 'engine/src/renderer/opengl.rs')

diff --git a/engine/src/renderer/opengl.rs b/engine/src/renderer/opengl.rs
index df57b84..b434cd8 100644
--- a/engine/src/renderer/opengl.rs
+++ b/engine/src/renderer/opengl.rs
@@ -40,7 +40,9 @@ use opengl_bindings::misc::{
     Capability,
     SetViewportError as GlSetViewportError,
     clear_buffers,
+    define_scissor_box as gl_define_scissor_box,
     enable,
+    get_viewport as gl_get_viewport,
     set_enabled,
 };
 use opengl_bindings::shader::{
@@ -1203,6 +1205,43 @@ fn handle_commands(
                             draw_props.depth_test_enabled,
                         );
                     }
+
+                    if draw_props_update_flags
+                        .contains(DrawPropertiesUpdateFlags::SCISSOR_TEST_ENABLED)
+                    {
+                        set_enabled(
+                            curr_gl_ctx,
+                            Capability::ScissorTest,
+                            draw_props.scissor_test_enabled,
+                        );
+                    }
+
+                    if draw_props_update_flags
+                        .contains(DrawPropertiesUpdateFlags::SCISSOR_BOX)
+                    {
+                        gl_define_scissor_box(
+                            curr_gl_ctx,
+                            draw_props.scissor_box.lower_left_corner_pos.into(),
+                            draw_props
+                                .scissor_box
+                                .size
+                                .unwrap_or_else(|| {
+                                    let (_, viewport_size) = gl_get_viewport(curr_gl_ctx);
+
+                                    Dimens::<u16> {
+                                        width: viewport_size
+                                            .width
+                                            .try_into()
+                                            .expect("Viewport width too large"),
+                                        height: viewport_size
+                                            .height
+                                            .try_into()
+                                            .expect("Viewport height too large"),
+                                    }
+                                })
+                                .into(),
+                        );
+                    }
                 }
             }
         }
-- 
cgit v1.2.3-18-g5258