Run CI against stable Godot runtime

.github/composite/godot-install/action.yml

@@ -37,13 +37,19 @@ runs:
 #      shell: bash
 
     - name: "Download Godot artifact"
+      env:
+        ARTIFACT_NAME: ${{ inputs.artifact-name }}
 #      if: steps.cache-godot.outputs.cache-hit != 'true'
       # If a specific Godot revision should be used, rather than latest, use this:
       # curl https://nightly.link/Bromeon/godot4-nightly/actions/runs/4910907653/${{ inputs.artifact-name }}.zip \
       run: |
-        curl https://nightly.link/Bromeon/godot4-nightly/workflows/compile-godot/master/${{ inputs.artifact-name }}.zip \
-          -Lo artifact.zip \
-          --retry 3
+        if [[ $ARTIFACT_NAME == *"stable"* ]]; then
+          url="https://nightly.link/Bromeon/godot4-nightly/workflows/compile-godot-stable/master/$ARTIFACT_NAME.zip"
+        else
+          url="https://nightly.link/Bromeon/godot4-nightly/workflows/compile-godot-nightly/master/$ARTIFACT_NAME.zip"
+        fi
+
+        curl "$url" -Lo artifact.zip --retry 3
         unzip artifact.zip -d $RUNNER_DIR/godot_bin
       shell: bash
 

.github/workflows/full-ci.yml

@@ -123,47 +123,64 @@ jobs:
     strategy:
       fail-fast: false # cancel all jobs as soon as one fails?
       matrix:
+        # Naming: {os}[-{runtimeVersion}]-{apiVersion}
+        # runtimeVersion = version of Godot binary; apiVersion = version of GDExtension API against which gdext is compiled.
+
         # Order this way because macOS typically has the longest duration, followed by Windows, so it benefits total workflow execution time.
         # Additionally, the 'linux (msrv *)' special case will then be listed next to the other 'linux' jobs.
         # Note: Windows uses '--target x86_64-pc-windows-msvc' by default as Cargo argument.
         include:
           # macOS
 
+          - name: macos-stableRt-4.0.3
+            os: macos-12
+            artifact-name: macos-stable
+            godot-binary: godot.macos.editor.dev.x86_64
+            godot-prebuilt-patch: '4.0.3'
+
           - name: macos-4.0.3
             os: macos-12
-            artifact-name: macos
+            artifact-name: macos-nightly
             godot-binary: godot.macos.editor.dev.x86_64
             godot-prebuilt-patch: '4.0.3'
 
           - name: macos-double
             os: macos-12
+            artifact-name: macos-double-nightly
             godot-binary: godot.macos.editor.dev.double.x86_64
             rust-extra-args: --features godot/double-precision
 
           - name: macos-nightly
             os: macos-12
-            artifact-name: macos
+            artifact-name: macos-nightly
             godot-binary: godot.macos.editor.dev.x86_64
             rust-extra-args: --features godot/custom-godot
             with-llvm: true
             godot-prebuilt-patch: '4.1'
 
           # Windows
 
+          - name: windows-stableRt-4.0.3
+            os: windows-latest
+            artifact-name: windows-stable
+            godot-binary: godot.windows.editor.dev.x86_64.exe
+            godot-prebuilt-patch: '4.0.3'
+
           - name: windows-4.0.3
             os: windows-latest
-            artifact-name: windows
+            artifact-name: windows-nightly
             godot-binary: godot.windows.editor.dev.x86_64.exe
             godot-prebuilt-patch: '4.0.3'
 
           - name: windows-double
             os: windows-latest
+            artifact-name: windows-double-nightly
             godot-binary: godot.windows.editor.dev.double.x86_64.exe
             rust-extra-args: --features godot/double-precision
 
           - name: windows-nightly
             os: windows-latest
-            artifact-name: windows
+            artifact-name: windows-nightly
             godot-binary: godot.windows.editor.dev.x86_64.exe
             rust-extra-args: --features godot/custom-godot
             godot-prebuilt-patch: '4.1'
@@ -172,44 +189,50 @@ jobs:
 
           # Don't use latest Ubuntu (22.04) as it breaks lots of ecosystem compatibility.
           # If ever moving to ubuntu-latest, need to manually install libtinfo5 for LLVM.
+          - name: linux-stableRt-4.0.3
+            os: ubuntu-20.04
+            artifact-name: linux-stable
+            godot-binary: godot.linuxbsd.editor.dev.x86_64
+
           - name: linux-4.0.3
             os: ubuntu-20.04
-            artifact-name: linux
+            artifact-name: linux-nightly
             godot-binary: godot.linuxbsd.editor.dev.x86_64
             godot-check-header: false # disabled for now
 
           - name: linux-4.0.2
             os: ubuntu-20.04
-            artifact-name: linux
+            artifact-name: linux-nightly
             godot-binary: godot.linuxbsd.editor.dev.x86_64
             godot-prebuilt-patch: '4.0.2'
 
           - name: linux-4.0.1
             os: ubuntu-20.04
-            artifact-name: linux
+            artifact-name: linux-nightly
             godot-binary: godot.linuxbsd.editor.dev.x86_64
             godot-prebuilt-patch: '4.0.1'
 
           - name: linux-4.0
             os: ubuntu-20.04
-            artifact-name: linux
+            artifact-name: linux-nightly
             godot-binary: godot.linuxbsd.editor.dev.x86_64
             godot-prebuilt-patch: '4.0'
 
           - name: linux-double
             os: ubuntu-20.04
+            artifact-name: linux-double-nightly
             godot-binary: godot.linuxbsd.editor.dev.double.x86_64
             rust-extra-args: --features godot/double-precision
 
           - name: linux-features
             os: ubuntu-20.04
-            artifact-name: linux
+            artifact-name: linux-nightly
             godot-binary: godot.linuxbsd.editor.dev.x86_64
             rust-extra-args: --features godot/threads,godot/serde
 
           - name: linux-nightly
             os: ubuntu-20.04
-            artifact-name: linux
+            artifact-name: linux-nightly
             godot-binary: godot.linuxbsd.editor.dev.x86_64
             rust-extra-args: --features godot/custom-godot
             godot-prebuilt-patch: '4.1'
@@ -220,35 +243,27 @@ jobs:
           # The gcc version can possibly be removed later, as it is slower and needs a larger artifact than the clang one.
 
           # --disallow-focus: fail if #[itest(focus)] is encountered, to prevent running only a few tests for full CI
-          - name: linux-memcheck-gcc-4.0.3
-            os: ubuntu-20.04
-            artifact-name: linux-memcheck-gcc
-            godot-binary: godot.linuxbsd.editor.dev.x86_64.san
-            godot-args: -- --disallow-focus
-            rust-toolchain: nightly
-            rust-env-rustflags: -Zrandomize-layout
 
-          - name: linux-memcheck-clang-4.0.3
+          - name: linux-memcheck-stableRt-4.0.3
             os: ubuntu-20.04
-            artifact-name: linux-memcheck-clang
+            artifact-name: linux-memcheck-clang-stable
             godot-binary: godot.linuxbsd.editor.dev.x86_64.llvm.san
             godot-args: -- --disallow-focus
             rust-toolchain: nightly
             rust-env-rustflags: -Zrandomize-layout
 
-          - name: linux-memcheck-gcc-nightly
-            os: ubuntu-20.04
-            artifact-name: linux-memcheck-gcc
-            godot-binary: godot.linuxbsd.editor.dev.x86_64.san
-            godot-args: -- --disallow-focus
-            rust-toolchain: nightly
-            rust-env-rustflags: -Zrandomize-layout
-            rust-extra-args: --features godot/custom-godot
-            godot-prebuilt-patch: '4.1'
+          # FIXME(#298): memory leaks detected when running 4.0.3 API with 4.1+ binary
+#          - name: linux-memcheck-4.0.3
+#            os: ubuntu-20.04
+#            artifact-name: linux-memcheck-clang-nightly
+#            godot-binary: godot.linuxbsd.editor.dev.x86_64.llvm.san
+#            godot-args: -- --disallow-focus
+#            rust-toolchain: nightly
+#            rust-env-rustflags: -Zrandomize-layout
 
-          - name: linux-memcheck-clang-nightly
+          - name: linux-memcheck-nightly
             os: ubuntu-20.04
-            artifact-name: linux-memcheck-clang
+            artifact-name: linux-memcheck-clang-nightly
             godot-binary: godot.linuxbsd.editor.dev.x86_64.llvm.san
             godot-args: -- --disallow-focus
             rust-toolchain: nightly
@@ -263,7 +278,7 @@ jobs:
       - name: "Run Godot integration test"
         uses: ./.github/composite/godot-itest
         with:
-          artifact-name: godot-${{ matrix.artifact-name || matrix.name }}
+          artifact-name: godot-${{ matrix.artifact-name }}
           godot-binary: ${{ matrix.godot-binary }}
           godot-args: ${{ matrix.godot-args }}
           godot-prebuilt-patch: ${{ matrix.godot-prebuilt-patch }}

.github/workflows/minimal-ci.yml

@@ -86,7 +86,7 @@ jobs:
       - name: "Run Godot integration test"
         uses: ./.github/composite/godot-itest
         with:
-          artifact-name: godot-linux
+          artifact-name: godot-linux-nightly
           godot-binary: godot.linuxbsd.editor.dev.x86_64
 
 

godot-bindings/src/godot_exe.rs

@@ -6,10 +6,10 @@
 
 //! Commands related to Godot executable
 
-use crate::custom::godot_version::GodotVersion;
 use crate::godot_version::parse_godot_version;
 use crate::header_gen::generate_rust_binding;
 use crate::watch::StopWatch;
+use crate::GodotVersion;
 
 use regex::Regex;
 use std::fs;
@@ -99,7 +99,7 @@ fn update_version_file(version: &str) {
 }
 */
 
-fn read_godot_version(godot_bin: &Path) -> GodotVersion {
+pub(crate) fn read_godot_version(godot_bin: &Path) -> GodotVersion {
     let output = Command::new(godot_bin)
         .arg("--version")
         .output()
@@ -259,7 +259,7 @@ fn polyfill_legacy_header(c: &mut String) {
     );
 }
 
-fn locate_godot_binary() -> PathBuf {
+pub(crate) fn locate_godot_binary() -> PathBuf {
     if let Ok(string) = std::env::var("GODOT4_BIN") {
         println!("Found GODOT4_BIN with path to executable: '{string}'");
         println!("cargo:rerun-if-env-changed=GODOT4_BIN");

godot-bindings/src/godot_version.rs

@@ -6,28 +6,11 @@
 
 //#![allow(unused_variables, dead_code)]
 
+use crate::GodotVersion;
 use regex::{Captures, Regex};
 use std::error::Error;
 use std::str::FromStr;
 
-#[derive(Debug, Eq, PartialEq)]
-pub struct GodotVersion {
-    /// the original string (trimmed, stripped of text around)
-    pub full_string: String,
-
-    pub major: u8,
-    pub minor: u8,
-
-    /// 0 if none
-    pub patch: u8,
-
-    /// alpha|beta|dev|stable
-    pub status: String,
-
-    /// Git revision 'custom_build.{rev}' or '{official}.rev', if available
-    pub custom_rev: Option<String>,
-}
-
 pub fn parse_godot_version(version_str: &str) -> Result<GodotVersion, Box<dyn Error>> {
     // Format of the string emitted by `godot --version`:
     // https://github.com/godot-rust/gdext/issues/118#issuecomment-1465748123

godot-bindings/src/lib.rs

@@ -17,6 +17,26 @@ compile_error!(
     "At least one of `custom-godot` or `prebuilt-godot` must be specified (none given)."
 );
 
+// This is outside of `godot_version` to allow us to use it even when we don't have the `custom-godot`
+// feature enabled.
+#[derive(Debug, Eq, PartialEq)]
+pub struct GodotVersion {
+    /// the original string (trimmed, stripped of text around)
+    pub full_string: String,
+
+    pub major: u8,
+    pub minor: u8,
+
+    /// 0 if none
+    pub patch: u8,
+
+    /// alpha|beta|dev|stable
+    pub status: String,
+
+    /// Git revision 'custom_build.{rev}' or '{official}.rev', if available
+    pub custom_rev: Option<String>,
+}
+
 // ----------------------------------------------------------------------------------------------------------------------------------------------
 // Regenerate all files
 
@@ -41,6 +61,10 @@ mod custom {
     pub fn write_gdextension_headers_from_c(h_path: &Path, rs_path: &Path, watch: &mut StopWatch) {
         godot_exe::write_gdextension_headers(h_path, rs_path, true, watch);
     }
+
+    pub(crate) fn get_godot_version() -> GodotVersion {
+        godot_exe::read_godot_version(&godot_exe::locate_godot_binary())
+    }
 }
 
 #[cfg(feature = "custom-godot")]
@@ -70,6 +94,23 @@ mod prebuilt {
             .unwrap_or_else(|e| panic!("failed to write gdextension_interface.rs: {e}"));
         watch.record("write_header_rs");
     }
+
+    pub(crate) fn get_godot_version() -> GodotVersion {
+        let version: Vec<&str> = godot4_prebuilt::GODOT_VERSION
+            .split('.')
+            .collect::<Vec<_>>();
+        GodotVersion {
+            full_string: godot4_prebuilt::GODOT_VERSION.into(),
+            major: version[0].parse().unwrap(),
+            minor: version[1].parse().unwrap(),
+            patch: version
+                .get(2)
+                .and_then(|patch| patch.parse().ok())
+                .unwrap_or(0),
+            status: "stable".into(),
+            custom_rev: None,
+        }
+    }
 }
 
 #[cfg(not(feature = "custom-godot"))]
@@ -85,3 +126,21 @@ pub fn clear_dir(dir: &Path, watch: &mut StopWatch) {
     }
     std::fs::create_dir_all(dir).unwrap_or_else(|e| panic!("failed to create dir: {e}"));
 }
+
+pub fn emit_godot_version_cfg() {
+    let GodotVersion {
+        major,
+        minor,
+        patch,
+        ..
+    } = get_godot_version();
+
+    println!(r#"cargo:rustc-cfg=gdextension_api="{major}.{minor}""#);
+
+    // Godot drops the patch version if it is 0.
+    if patch != 0 {
+        println!(r#"cargo:rustc-cfg=gdextension_exact_api="{major}.{minor}.{patch}""#);
+    } else {
+        println!(r#"cargo:rustc-cfg=gdextension_exact_api="{major}.{minor}""#);
+    }
+}

godot-codegen/src/central_generator.rs

@@ -272,6 +272,15 @@ fn make_build_config(header: &Header) -> TokenStream {
                     String::from_utf8_lossy(c_str.to_bytes()).to_string()
                 }
             }
+
+            /// Version of the Godot engine which loaded gdext via GDExtension binding, as
+            /// `(major, minor, patch)` triple.
+            pub fn godot_runtime_version_triple() -> (u8, u8, u8) {
+                let version = unsafe {
+                    crate::runtime_metadata().godot_version
+                };
+                (version.major as u8, version.minor as u8, version.patch as u8)
+            }
         }
     }
 }

godot-core/Cargo.toml

@@ -29,4 +29,5 @@ godot = { path = "../godot" }
 serde_json = "1.0"
 
 [build-dependencies]
+godot-bindings = { path = "../godot-bindings" }
 godot-codegen = { path = "../godot-codegen" }

godot-core/build.rs

@@ -17,4 +17,6 @@ fn main() {
 
     godot_codegen::generate_core_files(gen_path);
     println!("cargo:rerun-if-changed=build.rs");
+
+    godot_bindings::emit_godot_version_cfg();
 }

godot-core/src/builtin/array.rs

@@ -717,7 +717,7 @@ impl<T: VariantMetadata> FromVariant for Array<T> {
         }
 
         let array = unsafe {
-            Self::from_sys_init(|self_ptr| {
+            sys::from_sys_init_or_init_default::<Self>(|self_ptr| {
                 let array_from_variant = sys::builtin_fn!(array_from_variant);
                 array_from_variant(self_ptr, variant.var_sys());
             })