From 43a97878ce14b72f0981164f87f2e35e14151312 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 11:22:09 +0200
Subject: Adding upstream version 110.0.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 third_party/rust/wgpu-hal/src/auxil/renderdoc.rs | 141 +++++++++++++++++++++++
 1 file changed, 141 insertions(+)
 create mode 100644 third_party/rust/wgpu-hal/src/auxil/renderdoc.rs

(limited to 'third_party/rust/wgpu-hal/src/auxil/renderdoc.rs')

diff --git a/third_party/rust/wgpu-hal/src/auxil/renderdoc.rs b/third_party/rust/wgpu-hal/src/auxil/renderdoc.rs
new file mode 100644
index 0000000000..b2e9242a89
--- /dev/null
+++ b/third_party/rust/wgpu-hal/src/auxil/renderdoc.rs
@@ -0,0 +1,141 @@
+//! RenderDoc integration - <https://renderdoc.org/>
+
+use std::{ffi, os, ptr};
+
+/// The dynamically loaded RenderDoc API function table
+#[repr(C)]
+#[derive(Debug)]
+pub struct RenderDocApi {
+    api: renderdoc_sys::RENDERDOC_API_1_4_1,
+    lib: libloading::Library,
+}
+
+unsafe impl Send for RenderDocApi {}
+unsafe impl Sync for RenderDocApi {}
+
+/// RenderDoc API type
+#[derive(Debug)]
+pub enum RenderDoc {
+    /// RenderDoc functionality is available
+    Available {
+        /// RenderDoc API with function pointers
+        api: RenderDocApi,
+    },
+    /// RenderDoc functionality is _not_ available
+    NotAvailable {
+        /// A description why renderdoc functionality is not available
+        reason: String,
+    },
+}
+
+// TODO: replace with libloading API once supported
+#[cfg(unix)]
+const RTLD_NOLOAD: i32 = 0x4;
+
+impl RenderDoc {
+    pub unsafe fn new() -> Self {
+        type GetApiFn = unsafe extern "C" fn(version: u32, out: *mut *mut ffi::c_void) -> i32;
+
+        #[cfg(windows)]
+        let renderdoc_filename = "renderdoc.dll";
+        #[cfg(all(unix, not(target_os = "android")))]
+        let renderdoc_filename = "librenderdoc.so";
+        #[cfg(target_os = "android")]
+        let renderdoc_filename = "libVkLayer_GLES_RenderDoc.so";
+
+        #[cfg(unix)]
+        let renderdoc_result: Result<libloading::Library, libloading::Error> = unsafe {
+            libloading::os::unix::Library::open(
+                Some(renderdoc_filename),
+                libloading::os::unix::RTLD_NOW | RTLD_NOLOAD,
+            )
+        }
+        .map(|lib| lib.into());
+
+        #[cfg(windows)]
+        let renderdoc_result: Result<libloading::Library, libloading::Error> =
+            libloading::os::windows::Library::open_already_loaded(renderdoc_filename)
+                .map(|lib| lib.into());
+
+        let renderdoc_lib = match renderdoc_result {
+            Ok(lib) => lib,
+            Err(e) => {
+                return RenderDoc::NotAvailable {
+                    reason: format!(
+                        "Unable to load renderdoc library '{}': {:?}",
+                        renderdoc_filename, e
+                    ),
+                }
+            }
+        };
+
+        let get_api: libloading::Symbol<GetApiFn> =
+            match unsafe { renderdoc_lib.get(b"RENDERDOC_GetAPI\0") } {
+                Ok(api) => api,
+                Err(e) => {
+                    return RenderDoc::NotAvailable {
+                        reason: format!(
+                            "Unable to get RENDERDOC_GetAPI from renderdoc library '{}': {:?}",
+                            renderdoc_filename, e
+                        ),
+                    }
+                }
+            };
+        let mut obj = ptr::null_mut();
+        match unsafe { get_api(10401, &mut obj) } {
+            1 => RenderDoc::Available {
+                api: RenderDocApi {
+                    api: unsafe { *(obj as *mut renderdoc_sys::RENDERDOC_API_1_4_1) },
+                    lib: renderdoc_lib,
+                },
+            },
+            return_value => RenderDoc::NotAvailable {
+                reason: format!(
+                    "Unable to get API from renderdoc library '{}': {}",
+                    renderdoc_filename, return_value
+                ),
+            },
+        }
+    }
+}
+
+impl Default for RenderDoc {
+    fn default() -> Self {
+        if !cfg!(debug_assertions) {
+            return RenderDoc::NotAvailable {
+                reason: "RenderDoc support is only enabled with 'debug_assertions'".into(),
+            };
+        }
+        unsafe { Self::new() }
+    }
+}
+/// A implementation specific handle
+pub type Handle = *mut os::raw::c_void;
+
+impl RenderDoc {
+    /// Start a RenderDoc frame capture
+    pub unsafe fn start_frame_capture(&self, device_handle: Handle, window_handle: Handle) -> bool {
+        match *self {
+            Self::Available { api: ref entry } => {
+                unsafe { entry.api.StartFrameCapture.unwrap()(device_handle, window_handle) };
+                true
+            }
+            Self::NotAvailable { ref reason } => {
+                log::warn!("Could not start RenderDoc frame capture: {}", reason);
+                false
+            }
+        }
+    }
+
+    /// End a RenderDoc frame capture
+    pub unsafe fn end_frame_capture(&self, device_handle: Handle, window_handle: Handle) {
+        match *self {
+            Self::Available { api: ref entry } => {
+                unsafe { entry.api.EndFrameCapture.unwrap()(device_handle, window_handle) };
+            }
+            Self::NotAvailable { ref reason } => {
+                log::warn!("Could not end RenderDoc frame capture: {}", reason)
+            }
+        };
+    }
+}
-- 
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