From 2deb7e0ec2dc36589f090b2c3c0d2676970fed38 Mon Sep 17 00:00:00 2001
From: Jacob Hughes <j@distanthills.org>
Date: Wed, 25 Oct 2023 11:42:46 -0700
Subject: [PATCH] debug_printf: Add DEBUG_PRINTF wgpu feature

---
 wgpu-core/src/device/resource.rs |  4 ++++
 wgpu-types/src/lib.rs            | 10 ++++++++++
 2 files changed, 14 insertions(+)

diff --git a/wgpu-core/src/device/resource.rs b/wgpu-core/src/device/resource.rs
index fd85fd6a775..6885b4d037c 100644
--- a/wgpu-core/src/device/resource.rs
+++ b/wgpu-core/src/device/resource.rs
@@ -1316,6 +1316,10 @@ impl<A: HalApi> Device<A> {
                 .flags
                 .contains(wgt::DownlevelFlags::CUBE_ARRAY_TEXTURES),
         );
+        caps.set(
+            Caps::DEBUG_PRINTF,
+            self.features.contains(wgt::Features::DEBUG_PRINTF),
+        );
 
         let debug_source = if self.instance_flags.contains(wgt::InstanceFlags::DEBUG) {
             Some(hal::DebugSource {
diff --git a/wgpu-types/src/lib.rs b/wgpu-types/src/lib.rs
index 82989598efd..3c96fe67dac 100644
--- a/wgpu-types/src/lib.rs
+++ b/wgpu-types/src/lib.rs
@@ -760,6 +760,16 @@ bitflags::bitflags! {
 
         // Shader:
 
+        /// Enables support for debugPrintf in WGSL shaders.
+        ///
+        /// Supported Platforms:
+        /// - DX11 (fxc only)
+        /// - Dx12 (fxc only)
+        /// - Vulkan
+        /// - OpenGL
+        ///
+        /// This is a native only feature
+        const DEBUG_PRINTF = 1 << 58;
         /// Enables 64-bit floating point types in SPIR-V shaders.
         ///
         /// Note: even when supported by GPU hardware, 64-bit floating point operations are