1 files changed, 14 insertions, 0 deletions
diff --git a/wgpu/src/settings.rs b/wgpu/src/settings.rs
index a6aea0a5..5e2603ee 100644
--- a/wgpu/src/settings.rs
+++ b/wgpu/src/settings.rs
@@ -51,3 +51,17 @@ impl From<graphics::Settings> for Settings {
         }
     }
 }
+
+pub fn present_mode_from_env() -> Option<wgpu::PresentMode> {
+    let present_mode = std::env::var("ICED_PRESENT_MODE").ok()?;
+
+    match present_mode.to_lowercase().as_str() {
+        "vsync" => Some(wgpu::PresentMode::AutoVsync),
+        "no_vsync" => Some(wgpu::PresentMode::AutoNoVsync),
+        "immediate" => Some(wgpu::PresentMode::Immediate),
+        "fifo" => Some(wgpu::PresentMode::Fifo),
+        "fifo_relaxed" => Some(wgpu::PresentMode::FifoRelaxed),
+        "mailbox" => Some(wgpu::PresentMode::Mailbox),
+        _ => None,
+    }
+}