Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

10 files changed, 1698 insertions, 0 deletions

diff --git a/third_party/rust/gl_generator/generators/debug_struct_gen.rs b/third_party/rust/gl_generator/generators/debug_struct_gen.rs
new file mode 100644
index 0000000000..98fbcef158
--- /dev/null
+++ b/third_party/rust/gl_generator/generators/debug_struct_gen.rs
@@ -0,0 +1,289 @@
+// Copyright 2015 Brendan Zabarauskas and the gl-rs developers
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use registry::Registry;
+use std::io;
+
+#[allow(missing_copy_implementations)]
+pub struct DebugStructGenerator;
+
+impl super::Generator for DebugStructGenerator {
+    fn write<W>(&self, registry: &Registry, dest: &mut W) -> io::Result<()>
+    where
+        W: io::Write,
+    {
+        try!(write_header(dest));
+        try!(write_type_aliases(registry, dest));
+        try!(write_enums(registry, dest));
+        try!(write_fnptr_struct_def(dest));
+        try!(write_panicking_fns(registry, dest));
+        try!(write_struct(registry, dest));
+        try!(write_impl(registry, dest));
+        Ok(())
+    }
+}
+
+/// Creates a `__gl_imports` module which contains all the external symbols that we need for the
+///  bindings.
+fn write_header<W>(dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    writeln!(
+        dest,
+        r#"
+        mod __gl_imports {{
+            pub use std::mem;
+            pub use std::marker::Send;
+            pub use std::os::raw;
+        }}
+    "#
+    )
+}
+
+/// Creates a `types` module which contains all the type aliases.
+///
+/// See also `generators::gen_types`.
+fn write_type_aliases<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    try!(writeln!(
+        dest,
+        r#"
+        pub mod types {{
+            #![allow(non_camel_case_types, non_snake_case, dead_code, missing_copy_implementations)]
+    "#
+    ));
+
+    try!(super::gen_types(registry.api, dest));
+
+    writeln!(dest, "}}")
+}
+
+/// Creates all the `<enum>` elements at the root of the bindings.
+fn write_enums<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    for enm in &registry.enums {
+        try!(super::gen_enum_item(enm, "types::", dest));
+    }
+
+    Ok(())
+}
+
+/// Creates a `FnPtr` structure which contains the store for a single binding.
+fn write_fnptr_struct_def<W>(dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    writeln!(
+        dest,
+        "
+        #[allow(dead_code, missing_copy_implementations)]
+        #[derive(Clone)]
+        pub struct FnPtr {{
+            /// The function pointer that will be used when calling the function.
+            f: *const __gl_imports::raw::c_void,
+            /// True if the pointer points to a real function, false if points to a `panic!` fn.
+            is_loaded: bool,
+        }}
+
+        impl FnPtr {{
+            /// Creates a `FnPtr` from a load attempt.
+            fn new(ptr: *const __gl_imports::raw::c_void) -> FnPtr {{
+                if ptr.is_null() {{
+                    FnPtr {{
+                        f: missing_fn_panic as *const __gl_imports::raw::c_void,
+                        is_loaded: false
+                    }}
+                }} else {{
+                    FnPtr {{ f: ptr, is_loaded: true }}
+                }}
+            }}
+
+            /// Returns `true` if the function has been successfully loaded.
+            ///
+            /// If it returns `false`, calling the corresponding function will fail.
+            #[inline]
+            #[allow(dead_code)]
+            pub fn is_loaded(&self) -> bool {{
+                self.is_loaded
+            }}
+        }}
+    "
+    )
+}
+
+/// Creates a `panicking` module which contains one function per GL command.
+///
+/// These functions are the mocks that are called if the real function could not be loaded.
+fn write_panicking_fns<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    writeln!(
+        dest,
+        "#[inline(never)]
+        fn missing_fn_panic() -> ! {{
+            panic!(\"{api} function was not loaded\")
+        }}",
+        api = registry.api
+    )
+}
+
+/// Creates a structure which stores all the `FnPtr` of the bindings.
+///
+/// The name of the struct corresponds to the namespace.
+fn write_struct<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    try!(writeln!(
+        dest,
+        "
+        #[allow(non_camel_case_types, non_snake_case, dead_code)]
+        #[derive(Clone)]
+        pub struct {api} {{",
+        api = super::gen_struct_name(registry.api)
+    ));
+
+    for cmd in &registry.cmds {
+        if let Some(v) = registry.aliases.get(&cmd.proto.ident) {
+            try!(writeln!(dest, "/// Fallbacks: {}", v.join(", ")));
+        }
+        try!(writeln!(dest, "pub {name}: FnPtr,", name = cmd.proto.ident));
+    }
+    try!(writeln!(dest, "_priv: ()"));
+
+    writeln!(dest, "}}")
+}
+
+/// Creates the `impl` of the structure created by `write_struct`.
+fn write_impl<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    try!(writeln!(dest,
+                  "impl {api} {{
+            /// Load each OpenGL symbol using a custom load function. This allows for the
+            /// use of functions like `glfwGetProcAddress` or `SDL_GL_GetProcAddress`.
+            ///
+            /// ~~~ignore
+            /// let gl = Gl::load_with(|s| glfw.get_proc_address(s));
+            /// ~~~
+            #[allow(dead_code, unused_variables)]
+            pub fn load_with<F>(mut loadfn: F) -> {api} where F: FnMut(&'static str) -> *const __gl_imports::raw::c_void {{
+                #[inline(never)]
+                fn do_metaloadfn(loadfn: &mut dyn FnMut(&'static str) -> *const __gl_imports::raw::c_void,
+                                 symbol: &'static str,
+                                 symbols: &[&'static str])
+                                 -> *const __gl_imports::raw::c_void {{
+                    let mut ptr = loadfn(symbol);
+                    if ptr.is_null() {{
+                        for &sym in symbols {{
+                            ptr = loadfn(sym);
+                            if !ptr.is_null() {{ break; }}
+                        }}
+                    }}
+                    ptr
+                }}
+                let mut metaloadfn = |symbol: &'static str, symbols: &[&'static str]| {{
+                    do_metaloadfn(&mut loadfn, symbol, symbols)
+                }};
+                {api} {{",
+                  api = super::gen_struct_name(registry.api)));
+
+    for cmd in &registry.cmds {
+        try!(writeln!(
+            dest,
+            "{name}: FnPtr::new(metaloadfn(\"{symbol}\", &[{fallbacks}])),",
+            name = cmd.proto.ident,
+            symbol = super::gen_symbol_name(registry.api, &cmd.proto.ident),
+            fallbacks = match registry.aliases.get(&cmd.proto.ident) {
+                Some(fbs) => fbs
+                    .iter()
+                    .map(|name| format!("\"{}\"", super::gen_symbol_name(registry.api, &name)))
+                    .collect::<Vec<_>>()
+                    .join(", "),
+                None => format!(""),
+            },
+        ))
+    }
+    try!(writeln!(dest, "_priv: ()"));
+
+    try!(writeln!(
+        dest,
+        "}}
+        }}"
+    ));
+
+    for cmd in &registry.cmds {
+        let idents = super::gen_parameters(cmd, true, false);
+        let typed_params = super::gen_parameters(cmd, false, true);
+        let println = format!(
+            "println!(\"[OpenGL] {}({})\" {});",
+            cmd.proto.ident,
+            (0..idents.len())
+                .map(|_| "{:?}".to_string())
+                .collect::<Vec<_>>()
+                .join(", "),
+            idents
+                .iter()
+                .zip(typed_params.iter())
+                .map(|(name, ty)| if ty.contains("GLDEBUGPROC") {
+                    format!(", \"<callback>\"")
+                } else {
+                    format!(", {}", name)
+                }).collect::<Vec<_>>()
+                .concat()
+        );
+
+        try!(writeln!(dest,
+                      "#[allow(non_snake_case, unused_variables, dead_code)]
+            #[inline] pub unsafe fn {name}(&self, {params}) -> {return_suffix} {{ \
+                {println}
+                let r = __gl_imports::mem::transmute::<_, extern \"system\" fn({typed_params}) -> {return_suffix}>\
+                    (self.{name}.f)({idents});
+                {print_err}
+                r
+            }}",
+                      name = cmd.proto.ident,
+                      params = super::gen_parameters(cmd, true, true).join(", "),
+                      typed_params = typed_params.join(", "),
+                      return_suffix = cmd.proto.ty,
+                      idents = idents.join(", "),
+                      println = println,
+                      print_err = if cmd.proto.ident != "GetError" &&
+                                     registry
+                                         .cmds
+                                         .iter()
+                                         .find(|cmd| cmd.proto.ident == "GetError")
+                                         .is_some() {
+                          format!(r#"match __gl_imports::mem::transmute::<_, extern "system" fn() -> u32>
+                    (self.GetError.f)() {{ 0 => (), r => println!("[OpenGL] ^ GL error triggered: {{}}", r) }}"#)
+                      } else {
+                          format!("")
+                      }))
+    }
+
+    writeln!(
+        dest,
+        "}}
+
+        unsafe impl __gl_imports::Send for {api} {{}}",
+        api = super::gen_struct_name(registry.api)
+    )
+}
diff --git a/third_party/rust/gl_generator/generators/global_gen.rs b/third_party/rust/gl_generator/generators/global_gen.rs
new file mode 100644
index 0000000000..82c4710979
--- /dev/null
+++ b/third_party/rust/gl_generator/generators/global_gen.rs
@@ -0,0 +1,309 @@
+// Copyright 2015 Brendan Zabarauskas and the gl-rs developers
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use registry::Registry;
+use std::io;
+
+#[allow(missing_copy_implementations)]
+pub struct GlobalGenerator;
+
+impl super::Generator for GlobalGenerator {
+    fn write<W>(&self, registry: &Registry, dest: &mut W) -> io::Result<()>
+    where
+        W: io::Write,
+    {
+        try!(write_header(dest));
+        try!(write_metaloadfn(dest));
+        try!(write_type_aliases(registry, dest));
+        try!(write_enums(registry, dest));
+        try!(write_fns(registry, dest));
+        try!(write_fnptr_struct_def(dest));
+        try!(write_ptrs(registry, dest));
+        try!(write_fn_mods(registry, dest));
+        try!(write_panicking_fns(registry, dest));
+        try!(write_load_fn(registry, dest));
+        Ok(())
+    }
+}
+
+/// Creates a `__gl_imports` module which contains all the external symbols that we need for the
+///  bindings.
+fn write_header<W>(dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    writeln!(
+        dest,
+        r#"
+        mod __gl_imports {{
+            pub use std::mem;
+            pub use std::os::raw;
+        }}
+    "#
+    )
+}
+
+/// Creates the metaloadfn function for fallbacks
+fn write_metaloadfn<W>(dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    writeln!(
+        dest,
+        r#"
+        #[inline(never)]
+        fn metaloadfn(loadfn: &mut dyn FnMut(&'static str) -> *const __gl_imports::raw::c_void,
+                      symbol: &'static str,
+                      fallbacks: &[&'static str]) -> *const __gl_imports::raw::c_void {{
+            let mut ptr = loadfn(symbol);
+            if ptr.is_null() {{
+                for &sym in fallbacks {{
+                    ptr = loadfn(sym);
+                    if !ptr.is_null() {{ break; }}
+                }}
+            }}
+            ptr
+        }}
+    "#
+    )
+}
+
+/// Creates a `types` module which contains all the type aliases.
+///
+/// See also `generators::gen_types`.
+fn write_type_aliases<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    try!(writeln!(
+        dest,
+        r#"
+        pub mod types {{
+            #![allow(non_camel_case_types, non_snake_case, dead_code, missing_copy_implementations)]
+    "#
+    ));
+
+    try!(super::gen_types(registry.api, dest));
+
+    writeln!(
+        dest,
+        "
+        }}
+    "
+    )
+}
+
+/// Creates all the `<enum>` elements at the root of the bindings.
+fn write_enums<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    for enm in &registry.enums {
+        try!(super::gen_enum_item(enm, "types::", dest));
+    }
+
+    Ok(())
+}
+
+/// Creates the functions corresponding to the GL commands.
+///
+/// The function calls the corresponding function pointer stored in the `storage` module created
+///  by `write_ptrs`.
+fn write_fns<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    for cmd in &registry.cmds {
+        if let Some(v) = registry.aliases.get(&cmd.proto.ident) {
+            try!(writeln!(dest, "/// Fallbacks: {}", v.join(", ")));
+        }
+
+        try!(writeln!(dest,
+            "#[allow(non_snake_case, unused_variables, dead_code)] #[inline]
+            pub unsafe fn {name}({params}) -> {return_suffix} {{ \
+                __gl_imports::mem::transmute::<_, extern \"system\" fn({typed_params}) -> {return_suffix}>\
+                    (storage::{name}.f)({idents}) \
+            }}",
+            name = cmd.proto.ident,
+            params = super::gen_parameters(cmd, true, true).join(", "),
+            typed_params = super::gen_parameters(cmd, false, true).join(", "),
+            return_suffix = cmd.proto.ty,
+            idents = super::gen_parameters(cmd, true, false).join(", "),
+        ));
+    }
+
+    Ok(())
+}
+
+/// Creates a `FnPtr` structure which contains the store for a single binding.
+fn write_fnptr_struct_def<W>(dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    writeln!(dest,
+             "
+        #[allow(missing_copy_implementations)]
+        pub struct FnPtr {{
+            /// The function pointer that will be used when calling the function.
+            f: *const __gl_imports::raw::c_void,
+            /// True if the pointer points to a real function, false if points to a `panic!` fn.
+            is_loaded: bool,
+        }}
+
+        impl FnPtr {{
+            /// Creates a `FnPtr` from a load attempt.
+            pub fn new(ptr: *const __gl_imports::raw::c_void) -> FnPtr {{
+                if ptr.is_null() {{
+                    FnPtr {{ f: missing_fn_panic as *const __gl_imports::raw::c_void, is_loaded: false }}
+                }} else {{
+                    FnPtr {{ f: ptr, is_loaded: true }}
+                }}
+            }}
+        }}
+    ")
+}
+
+/// Creates a `storage` module which contains a static `FnPtr` per GL command in the registry.
+fn write_ptrs<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    try!(writeln!(
+        dest,
+        "mod storage {{
+            #![allow(non_snake_case)]
+            #![allow(non_upper_case_globals)]
+            use super::__gl_imports::raw;
+            use super::FnPtr;"
+    ));
+
+    for c in &registry.cmds {
+        try!(writeln!(
+            dest,
+            "pub static mut {name}: FnPtr = FnPtr {{
+                f: super::missing_fn_panic as *const raw::c_void,
+                is_loaded: false
+            }};",
+            name = c.proto.ident
+        ));
+    }
+
+    writeln!(dest, "}}")
+}
+
+/// Creates one module for each GL command.
+///
+/// Each module contains `is_loaded` and `load_with` which interact with the `storage` module
+///  created by `write_ptrs`.
+fn write_fn_mods<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    for c in &registry.cmds {
+        let fallbacks = match registry.aliases.get(&c.proto.ident) {
+            Some(v) => {
+                let names = v
+                    .iter()
+                    .map(|name| format!("\"{}\"", super::gen_symbol_name(registry.api, &name[..])))
+                    .collect::<Vec<_>>();
+                format!("&[{}]", names.join(", "))
+            },
+            None => "&[]".to_string(),
+        };
+        let fnname = &c.proto.ident[..];
+        let symbol = super::gen_symbol_name(registry.api, &c.proto.ident[..]);
+        let symbol = &symbol[..];
+
+        try!(writeln!(dest, r##"
+            #[allow(non_snake_case)]
+            pub mod {fnname} {{
+                use super::{{storage, metaloadfn}};
+                use super::__gl_imports::raw;
+                use super::FnPtr;
+
+                #[inline]
+                #[allow(dead_code)]
+                pub fn is_loaded() -> bool {{
+                    unsafe {{ storage::{fnname}.is_loaded }}
+                }}
+
+                #[allow(dead_code)]
+                pub fn load_with<F>(mut loadfn: F) where F: FnMut(&'static str) -> *const raw::c_void {{
+                    unsafe {{
+                        storage::{fnname} = FnPtr::new(metaloadfn(&mut loadfn, "{symbol}", {fallbacks}))
+                    }}
+                }}
+            }}
+        "##, fnname = fnname, fallbacks = fallbacks, symbol = symbol));
+    }
+
+    Ok(())
+}
+
+/// Creates a `missing_fn_panic` function.
+///
+/// This function is the mock that is called if the real function could not be called.
+fn write_panicking_fns<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    writeln!(
+        dest,
+        "#[inline(never)]
+        fn missing_fn_panic() -> ! {{
+            panic!(\"{api} function was not loaded\")
+        }}
+        ",
+        api = registry.api
+    )
+}
+
+/// Creates the `load_with` function.
+///
+/// The function calls `load_with` in each module created by `write_fn_mods`.
+fn write_load_fn<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    try!(writeln!(dest,
+                  "
+        /// Load each OpenGL symbol using a custom load function. This allows for the
+        /// use of functions like `glfwGetProcAddress` or `SDL_GL_GetProcAddress`.
+        /// ~~~ignore
+        /// gl::load_with(|s| glfw.get_proc_address(s));
+        /// ~~~
+        #[allow(dead_code)]
+        pub fn load_with<F>(mut loadfn: F) where F: FnMut(&'static str) -> *const __gl_imports::raw::c_void {{
+            #[inline(never)]
+            fn inner(loadfn: &mut dyn FnMut(&'static str) -> *const __gl_imports::raw::c_void) {{
+    "));
+
+    for c in &registry.cmds {
+        try!(writeln!(
+            dest,
+            "{cmd_name}::load_with(&mut *loadfn);",
+            cmd_name = &c.proto.ident[..]
+        ));
+    }
+
+    writeln!(
+        dest,
+        "
+            }}
+
+            inner(&mut loadfn)
+        }}
+    "
+    )
+}
diff --git a/third_party/rust/gl_generator/generators/mod.rs b/third_party/rust/gl_generator/generators/mod.rs
new file mode 100644
index 0000000000..659d2ecaf4
--- /dev/null
+++ b/third_party/rust/gl_generator/generators/mod.rs
@@ -0,0 +1,119 @@
+// Copyright 2015 Brendan Zabarauskas and the gl-rs developers
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use registry::{Cmd, Enum, Registry};
+use std::io;
+use Api;
+
+pub mod debug_struct_gen;
+pub mod global_gen;
+pub mod static_gen;
+pub mod static_struct_gen;
+pub mod struct_gen;
+
+/// Trait for a bindings generator.
+///
+/// See https://github.com/brendanzab/gl-rs/tree/master/gl_generator#generator-types
+pub trait Generator {
+    /// Builds the GL bindings.
+    fn write<W>(&self, registry: &Registry, dest: &mut W) -> io::Result<()>
+    where
+        W: io::Write;
+}
+
+pub fn gen_struct_name(api: Api) -> &'static str {
+    match api {
+        Api::Gl => "Gl",
+        Api::Glx => "Glx",
+        Api::Wgl => "Wgl",
+        Api::Egl => "Egl",
+        Api::GlCore => "GlCore",
+        Api::Gles1 => "Gles1",
+        Api::Gles2 => "Gles2",
+        Api::Glsc2 => "Glsc2",
+    }
+}
+
+/// This function generates a `const name: type = value;` item.
+pub fn gen_enum_item<W>(enm: &Enum, types_prefix: &str, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    writeln!(dest,
+        "#[allow(dead_code, non_upper_case_globals)] pub const {ident}: {types_prefix}{ty} = {value}{cast_suffix};",
+        ident = enm.ident,
+        types_prefix = if enm.ty == "&'static str" { "" } else { types_prefix },
+        ty = enm.ty,
+        value = enm.value,
+        cast_suffix = match enm.cast {
+            true => format!(" as {}{}", types_prefix, enm.ty),
+            false => String::new(),
+        },
+    )
+}
+
+/// Generates all the type aliases for a namespace.
+///
+/// Aliases are either `pub type = ...` or `#[repr(C)] pub struct ... { ... }` and contain all the
+/// things that we can't obtain from the XML files.
+pub fn gen_types<W>(api: Api, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    if let Api::Egl = api {
+        try!(writeln!(dest, "{}", include_str!("templates/types/egl.rs")));
+        return Ok(());
+    }
+
+    try!(writeln!(dest, "{}", include_str!("templates/types/gl.rs")));
+
+    match api {
+        Api::Glx => try!(writeln!(dest, "{}", include_str!("templates/types/glx.rs"))),
+        Api::Wgl => try!(writeln!(dest, "{}", include_str!("templates/types/wgl.rs"))),
+        _ => {},
+    }
+
+    Ok(())
+}
+
+/// Generates the list of Rust `Arg`s that a `Cmd` requires.
+pub fn gen_parameters(cmd: &Cmd, with_idents: bool, with_types: bool) -> Vec<String> {
+    cmd.params
+        .iter()
+        .map(|binding| {
+            // returning
+            if with_idents && with_types {
+                format!("{}: {}", binding.ident, binding.ty)
+            } else if with_types {
+                format!("{}", binding.ty)
+            } else if with_idents {
+                format!("{}", binding.ident)
+            } else {
+                panic!()
+            }
+        })
+        .collect()
+}
+
+/// Generates the native symbol name of a `Cmd`.
+///
+/// Example results: `"glClear"`, `"wglCreateContext"`, etc.
+pub fn gen_symbol_name(api: Api, cmd: &str) -> String {
+    match api {
+        Api::Gl | Api::GlCore | Api::Gles1 | Api::Gles2 | Api::Glsc2 => format!("gl{}", cmd),
+        Api::Glx => format!("glX{}", cmd),
+        Api::Wgl => format!("wgl{}", cmd),
+        Api::Egl => format!("egl{}", cmd),
+    }
+}
diff --git a/third_party/rust/gl_generator/generators/static_gen.rs b/third_party/rust/gl_generator/generators/static_gen.rs
new file mode 100644
index 0000000000..8d15de0103
--- /dev/null
+++ b/third_party/rust/gl_generator/generators/static_gen.rs
@@ -0,0 +1,115 @@
+// Copyright 2015 Brendan Zabarauskas and the gl-rs developers
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use registry::Registry;
+use std::io;
+
+#[allow(missing_copy_implementations)]
+pub struct StaticGenerator;
+
+impl super::Generator for StaticGenerator {
+    fn write<W>(&self, registry: &Registry, dest: &mut W) -> io::Result<()>
+    where
+        W: io::Write,
+    {
+        try!(write_header(dest));
+        try!(write_type_aliases(registry, dest));
+        try!(write_enums(registry, dest));
+        try!(write_fns(registry, dest));
+        Ok(())
+    }
+}
+
+/// Creates a `__gl_imports` module which contains all the external symbols that we need for the
+///  bindings.
+fn write_header<W>(dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    writeln!(
+        dest,
+        r#"
+        mod __gl_imports {{
+            pub use std::mem;
+            pub use std::os::raw;
+        }}
+    "#
+    )
+}
+
+/// Creates a `types` module which contains all the type aliases.
+///
+/// See also `generators::gen_types`.
+fn write_type_aliases<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    try!(writeln!(
+        dest,
+        r#"
+        pub mod types {{
+            #![allow(non_camel_case_types, non_snake_case, dead_code, missing_copy_implementations)]
+    "#
+    ));
+
+    try!(super::gen_types(registry.api, dest));
+
+    writeln!(
+        dest,
+        "
+        }}
+    "
+    )
+}
+
+/// Creates all the `<enum>` elements at the root of the bindings.
+fn write_enums<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    for enm in &registry.enums {
+        try!(super::gen_enum_item(enm, "types::", dest));
+    }
+
+    Ok(())
+}
+
+/// io::Writes all functions corresponding to the GL bindings.
+///
+/// These are foreign functions, they don't have any content.
+fn write_fns<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    try!(writeln!(
+        dest,
+        "
+        #[allow(non_snake_case, unused_variables, dead_code)]
+        extern \"system\" {{"
+    ));
+
+    for cmd in &registry.cmds {
+        try!(writeln!(
+            dest,
+            "#[link_name=\"{symbol}\"]
+            pub fn {name}({params}) -> {return_suffix};",
+            symbol = super::gen_symbol_name(registry.api, &cmd.proto.ident),
+            name = cmd.proto.ident,
+            params = super::gen_parameters(cmd, true, true).join(", "),
+            return_suffix = cmd.proto.ty,
+        ));
+    }
+
+    writeln!(dest, "}}")
+}
diff --git a/third_party/rust/gl_generator/generators/static_struct_gen.rs b/third_party/rust/gl_generator/generators/static_struct_gen.rs
new file mode 100644
index 0000000000..c03a3e09dd
--- /dev/null
+++ b/third_party/rust/gl_generator/generators/static_struct_gen.rs
@@ -0,0 +1,165 @@
+// Copyright 2015 Brendan Zabarauskas and the gl-rs developers
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use registry::Registry;
+use std::io;
+
+#[allow(missing_copy_implementations)]
+pub struct StaticStructGenerator;
+
+impl super::Generator for StaticStructGenerator {
+    fn write<W>(&self, registry: &Registry, dest: &mut W) -> io::Result<()>
+    where
+        W: io::Write,
+    {
+        try!(write_header(dest));
+        try!(write_type_aliases(registry, dest));
+        try!(write_enums(registry, dest));
+        try!(write_struct(registry, dest));
+        try!(write_impl(registry, dest));
+        try!(write_fns(registry, dest));
+        Ok(())
+    }
+}
+
+/// Creates a `__gl_imports` module which contains all the external symbols that we need for the
+///  bindings.
+fn write_header<W>(dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    writeln!(
+        dest,
+        r#"
+        mod __gl_imports {{
+            pub use std::mem;
+            pub use std::os::raw;
+        }}
+    "#
+    )
+}
+
+/// Creates a `types` module which contains all the type aliases.
+///
+/// See also `generators::gen_types`.
+fn write_type_aliases<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    try!(writeln!(
+        dest,
+        r#"
+        pub mod types {{
+            #![allow(non_camel_case_types, non_snake_case, dead_code, missing_copy_implementations)]
+    "#
+    ));
+
+    try!(super::gen_types(registry.api, dest));
+
+    writeln!(dest, "}}")
+}
+
+/// Creates all the `<enum>` elements at the root of the bindings.
+fn write_enums<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    for enm in &registry.enums {
+        try!(super::gen_enum_item(enm, "types::", dest));
+    }
+
+    Ok(())
+}
+
+/// Creates a stub structure.
+///
+/// The name of the struct corresponds to the namespace.
+fn write_struct<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    writeln!(
+        dest,
+        "
+        #[allow(non_camel_case_types, non_snake_case, dead_code)]
+        #[derive(Copy, Clone)]
+        pub struct {api};",
+        api = super::gen_struct_name(registry.api),
+    )
+}
+
+/// Creates the `impl` of the structure created by `write_struct`.
+fn write_impl<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    try!(writeln!(dest,
+        "impl {api} {{
+            /// Stub function.
+            #[allow(dead_code)]
+            pub fn load_with<F>(mut _loadfn: F) -> {api} where F: FnMut(&'static str) -> *const __gl_imports::raw::c_void {{
+                {api}
+            }}",
+        api = super::gen_struct_name(registry.api),
+    ));
+
+    for cmd in &registry.cmds {
+        try!(writeln!(
+            dest,
+            "#[allow(non_snake_case)]
+            // #[allow(unused_variables)]
+            #[allow(dead_code)]
+            #[inline]
+            pub unsafe fn {name}(&self, {typed_params}) -> {return_suffix} {{
+                {name}({idents})
+            }}",
+            name = cmd.proto.ident,
+            typed_params = super::gen_parameters(cmd, true, true).join(", "),
+            return_suffix = cmd.proto.ty,
+            idents = super::gen_parameters(cmd, true, false).join(", "),
+        ));
+    }
+
+    writeln!(dest, "}}")
+}
+
+/// io::Writes all functions corresponding to the GL bindings.
+///
+/// These are foreign functions, they don't have any content.
+fn write_fns<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    try!(writeln!(
+        dest,
+        "
+        #[allow(non_snake_case)]
+        #[allow(unused_variables)]
+        #[allow(dead_code)]
+        extern \"system\" {{"
+    ));
+
+    for cmd in &registry.cmds {
+        try!(writeln!(
+            dest,
+            "#[link_name=\"{symbol}\"] fn {name}({params}) -> {return_suffix};",
+            symbol = super::gen_symbol_name(registry.api, &cmd.proto.ident),
+            name = cmd.proto.ident,
+            params = super::gen_parameters(cmd, true, true).join(", "),
+            return_suffix = cmd.proto.ty,
+        ));
+    }
+
+    writeln!(dest, "}}")
+}
diff --git a/third_party/rust/gl_generator/generators/struct_gen.rs b/third_party/rust/gl_generator/generators/struct_gen.rs
new file mode 100644
index 0000000000..6fcc3af00e
--- /dev/null
+++ b/third_party/rust/gl_generator/generators/struct_gen.rs
@@ -0,0 +1,256 @@
+// Copyright 2015 Brendan Zabarauskas and the gl-rs developers
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use registry::Registry;
+use std::io;
+
+#[allow(missing_copy_implementations)]
+pub struct StructGenerator;
+
+impl super::Generator for StructGenerator {
+    fn write<W>(&self, registry: &Registry, dest: &mut W) -> io::Result<()>
+    where
+        W: io::Write,
+    {
+        try!(write_header(dest));
+        try!(write_type_aliases(registry, dest));
+        try!(write_enums(registry, dest));
+        try!(write_fnptr_struct_def(dest));
+        try!(write_panicking_fns(registry, dest));
+        try!(write_struct(registry, dest));
+        try!(write_impl(registry, dest));
+        Ok(())
+    }
+}
+
+/// Creates a `__gl_imports` module which contains all the external symbols that we need for the
+///  bindings.
+fn write_header<W>(dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    writeln!(
+        dest,
+        r#"
+        mod __gl_imports {{
+            pub use std::mem;
+            pub use std::marker::Send;
+            pub use std::os::raw;
+        }}
+    "#
+    )
+}
+
+/// Creates a `types` module which contains all the type aliases.
+///
+/// See also `generators::gen_types`.
+fn write_type_aliases<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    try!(writeln!(
+        dest,
+        r#"
+        pub mod types {{
+            #![allow(non_camel_case_types, non_snake_case, dead_code, missing_copy_implementations)]
+    "#
+    ));
+
+    try!(super::gen_types(registry.api, dest));
+
+    writeln!(dest, "}}")
+}
+
+/// Creates all the `<enum>` elements at the root of the bindings.
+fn write_enums<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    for enm in &registry.enums {
+        try!(super::gen_enum_item(enm, "types::", dest));
+    }
+
+    Ok(())
+}
+
+/// Creates a `FnPtr` structure which contains the store for a single binding.
+fn write_fnptr_struct_def<W>(dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    writeln!(
+        dest,
+        "
+        #[allow(dead_code, missing_copy_implementations)]
+        #[derive(Clone)]
+        pub struct FnPtr {{
+            /// The function pointer that will be used when calling the function.
+            f: *const __gl_imports::raw::c_void,
+            /// True if the pointer points to a real function, false if points to a `panic!` fn.
+            is_loaded: bool,
+        }}
+
+        impl FnPtr {{
+            /// Creates a `FnPtr` from a load attempt.
+            fn new(ptr: *const __gl_imports::raw::c_void) -> FnPtr {{
+                if ptr.is_null() {{
+                    FnPtr {{
+                        f: missing_fn_panic as *const __gl_imports::raw::c_void,
+                        is_loaded: false
+                    }}
+                }} else {{
+                    FnPtr {{ f: ptr, is_loaded: true }}
+                }}
+            }}
+
+            /// Returns `true` if the function has been successfully loaded.
+            ///
+            /// If it returns `false`, calling the corresponding function will fail.
+            #[inline]
+            #[allow(dead_code)]
+            pub fn is_loaded(&self) -> bool {{
+                self.is_loaded
+            }}
+        }}
+    "
+    )
+}
+
+/// Creates a `panicking` module which contains one function per GL command.
+///
+/// These functions are the mocks that are called if the real function could not be loaded.
+fn write_panicking_fns<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    writeln!(
+        dest,
+        "#[inline(never)]
+        fn missing_fn_panic() -> ! {{
+            panic!(\"{api} function was not loaded\")
+        }}",
+        api = registry.api
+    )
+}
+
+/// Creates a structure which stores all the `FnPtr` of the bindings.
+///
+/// The name of the struct corresponds to the namespace.
+fn write_struct<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    try!(writeln!(
+        dest,
+        "
+        #[allow(non_camel_case_types, non_snake_case, dead_code)]
+        #[derive(Clone)]
+        pub struct {api} {{",
+        api = super::gen_struct_name(registry.api)
+    ));
+
+    for cmd in &registry.cmds {
+        if let Some(v) = registry.aliases.get(&cmd.proto.ident) {
+            try!(writeln!(dest, "/// Fallbacks: {}", v.join(", ")));
+        }
+        try!(writeln!(dest, "pub {name}: FnPtr,", name = cmd.proto.ident));
+    }
+    try!(writeln!(dest, "_priv: ()"));
+
+    writeln!(dest, "}}")
+}
+
+/// Creates the `impl` of the structure created by `write_struct`.
+fn write_impl<W>(registry: &Registry, dest: &mut W) -> io::Result<()>
+where
+    W: io::Write,
+{
+    try!(writeln!(dest,
+                  "impl {api} {{
+            /// Load each OpenGL symbol using a custom load function. This allows for the
+            /// use of functions like `glfwGetProcAddress` or `SDL_GL_GetProcAddress`.
+            ///
+            /// ~~~ignore
+            /// let gl = Gl::load_with(|s| glfw.get_proc_address(s));
+            /// ~~~
+            #[allow(dead_code, unused_variables)]
+            pub fn load_with<F>(mut loadfn: F) -> {api} where F: FnMut(&'static str) -> *const __gl_imports::raw::c_void {{
+                #[inline(never)]
+                fn do_metaloadfn(loadfn: &mut dyn FnMut(&'static str) -> *const __gl_imports::raw::c_void,
+                                 symbol: &'static str,
+                                 symbols: &[&'static str])
+                                 -> *const __gl_imports::raw::c_void {{
+                    let mut ptr = loadfn(symbol);
+                    if ptr.is_null() {{
+                        for &sym in symbols {{
+                            ptr = loadfn(sym);
+                            if !ptr.is_null() {{ break; }}
+                        }}
+                    }}
+                    ptr
+                }}
+                let mut metaloadfn = |symbol: &'static str, symbols: &[&'static str]| {{
+                    do_metaloadfn(&mut loadfn, symbol, symbols)
+                }};
+                {api} {{",
+                  api = super::gen_struct_name(registry.api)));
+
+    for cmd in &registry.cmds {
+        try!(writeln!(
+            dest,
+            "{name}: FnPtr::new(metaloadfn(\"{symbol}\", &[{fallbacks}])),",
+            name = cmd.proto.ident,
+            symbol = super::gen_symbol_name(registry.api, &cmd.proto.ident),
+            fallbacks = match registry.aliases.get(&cmd.proto.ident) {
+                Some(fbs) => fbs
+                    .iter()
+                    .map(|name| format!("\"{}\"", super::gen_symbol_name(registry.api, &name)))
+                    .collect::<Vec<_>>()
+                    .join(", "),
+                None => format!(""),
+            },
+        ))
+    }
+
+    try!(writeln!(dest, "_priv: ()"));
+
+    try!(writeln!(
+        dest,
+        "}}
+        }}"
+    ));
+
+    for cmd in &registry.cmds {
+        try!(writeln!(dest,
+            "#[allow(non_snake_case, unused_variables, dead_code)]
+            #[inline] pub unsafe fn {name}(&self, {params}) -> {return_suffix} {{ \
+                __gl_imports::mem::transmute::<_, extern \"system\" fn({typed_params}) -> {return_suffix}>\
+                    (self.{name}.f)({idents}) \
+            }}",
+            name = cmd.proto.ident,
+            params = super::gen_parameters(cmd, true, true).join(", "),
+            typed_params = super::gen_parameters(cmd, false, true).join(", "),
+            return_suffix = cmd.proto.ty,
+            idents = super::gen_parameters(cmd, true, false).join(", "),
+        ))
+    }
+
+    writeln!(
+        dest,
+        "}}
+
+        unsafe impl __gl_imports::Send for {api} {{}}",
+        api = super::gen_struct_name(registry.api)
+    )
+}
diff --git a/third_party/rust/gl_generator/generators/templates/types/egl.rs b/third_party/rust/gl_generator/generators/templates/types/egl.rs
new file mode 100644
index 0000000000..877638ab98
--- /dev/null
+++ b/third_party/rust/gl_generator/generators/templates/types/egl.rs
@@ -0,0 +1,70 @@
+// platform-specific aliases are unknown
+// IMPORTANT: these are alises to the same level of the bindings
+// the values must be defined by the user
+#[allow(dead_code)]
+pub type khronos_utime_nanoseconds_t = super::khronos_utime_nanoseconds_t;
+#[allow(dead_code)]
+pub type khronos_uint64_t = super::khronos_uint64_t;
+#[allow(dead_code)]
+pub type khronos_ssize_t = super::khronos_ssize_t;
+pub type EGLNativeDisplayType = super::EGLNativeDisplayType;
+#[allow(dead_code)]
+pub type EGLNativePixmapType = super::EGLNativePixmapType;
+#[allow(dead_code)]
+pub type EGLNativeWindowType = super::EGLNativeWindowType;
+pub type EGLint = super::EGLint;
+#[allow(dead_code)]
+pub type NativeDisplayType = super::NativeDisplayType;
+#[allow(dead_code)]
+pub type NativePixmapType = super::NativePixmapType;
+#[allow(dead_code)]
+pub type NativeWindowType = super::NativeWindowType;
+
+// EGL alises
+pub type Bool = EGLBoolean; // TODO: not sure
+pub type EGLBoolean = super::__gl_imports::raw::c_uint;
+pub type EGLenum = super::__gl_imports::raw::c_uint;
+pub type EGLAttribKHR = isize;
+pub type EGLAttrib = isize;
+pub type EGLConfig = *const super::__gl_imports::raw::c_void;
+pub type EGLContext = *const super::__gl_imports::raw::c_void;
+pub type EGLDeviceEXT = *const super::__gl_imports::raw::c_void;
+pub type EGLDisplay = *const super::__gl_imports::raw::c_void;
+pub type EGLSurface = *const super::__gl_imports::raw::c_void;
+pub type EGLClientBuffer = *const super::__gl_imports::raw::c_void;
+pub enum __eglMustCastToProperFunctionPointerType_fn {}
+pub type __eglMustCastToProperFunctionPointerType =
+    *mut __eglMustCastToProperFunctionPointerType_fn;
+pub type EGLImageKHR = *const super::__gl_imports::raw::c_void;
+pub type EGLImage = *const super::__gl_imports::raw::c_void;
+pub type EGLOutputLayerEXT = *const super::__gl_imports::raw::c_void;
+pub type EGLOutputPortEXT = *const super::__gl_imports::raw::c_void;
+pub type EGLSyncKHR = *const super::__gl_imports::raw::c_void;
+pub type EGLSync = *const super::__gl_imports::raw::c_void;
+pub type EGLTimeKHR = khronos_utime_nanoseconds_t;
+pub type EGLTime = khronos_utime_nanoseconds_t;
+pub type EGLSyncNV = *const super::__gl_imports::raw::c_void;
+pub type EGLTimeNV = khronos_utime_nanoseconds_t;
+pub type EGLuint64NV = khronos_utime_nanoseconds_t;
+pub type EGLStreamKHR = *const super::__gl_imports::raw::c_void;
+pub type EGLuint64KHR = khronos_uint64_t;
+pub type EGLNativeFileDescriptorKHR = super::__gl_imports::raw::c_int;
+pub type EGLsizeiANDROID = khronos_ssize_t;
+pub type EGLSetBlobFuncANDROID = extern "system" fn(*const super::__gl_imports::raw::c_void,
+                                                    EGLsizeiANDROID,
+                                                    *const super::__gl_imports::raw::c_void,
+                                                    EGLsizeiANDROID)
+                                                    -> ();
+pub type EGLGetBlobFuncANDROID = extern "system" fn(*const super::__gl_imports::raw::c_void,
+                                                    EGLsizeiANDROID,
+                                                    *mut super::__gl_imports::raw::c_void,
+                                                    EGLsizeiANDROID)
+                                                    -> EGLsizeiANDROID;
+
+#[repr(C)]
+pub struct EGLClientPixmapHI {
+    pData: *const super::__gl_imports::raw::c_void,
+    iWidth: EGLint,
+    iHeight: EGLint,
+    iStride: EGLint,
+}
diff --git a/third_party/rust/gl_generator/generators/templates/types/gl.rs b/third_party/rust/gl_generator/generators/templates/types/gl.rs
new file mode 100644
index 0000000000..90e4620104
--- /dev/null
+++ b/third_party/rust/gl_generator/generators/templates/types/gl.rs
@@ -0,0 +1,108 @@
+// Common types from OpenGL 1.1
+pub type GLenum = super::__gl_imports::raw::c_uint;
+pub type GLboolean = super::__gl_imports::raw::c_uchar;
+pub type GLbitfield = super::__gl_imports::raw::c_uint;
+pub type GLvoid = super::__gl_imports::raw::c_void;
+pub type GLbyte = super::__gl_imports::raw::c_char;
+pub type GLshort = super::__gl_imports::raw::c_short;
+pub type GLint = super::__gl_imports::raw::c_int;
+pub type GLclampx = super::__gl_imports::raw::c_int;
+pub type GLubyte = super::__gl_imports::raw::c_uchar;
+pub type GLushort = super::__gl_imports::raw::c_ushort;
+pub type GLuint = super::__gl_imports::raw::c_uint;
+pub type GLsizei = super::__gl_imports::raw::c_int;
+pub type GLfloat = super::__gl_imports::raw::c_float;
+pub type GLclampf = super::__gl_imports::raw::c_float;
+pub type GLdouble = super::__gl_imports::raw::c_double;
+pub type GLclampd = super::__gl_imports::raw::c_double;
+pub type GLeglImageOES = *const super::__gl_imports::raw::c_void;
+pub type GLchar = super::__gl_imports::raw::c_char;
+pub type GLcharARB = super::__gl_imports::raw::c_char;
+
+#[cfg(target_os = "macos")]
+pub type GLhandleARB = *const super::__gl_imports::raw::c_void;
+#[cfg(not(target_os = "macos"))]
+pub type GLhandleARB = super::__gl_imports::raw::c_uint;
+
+pub type GLhalfARB = super::__gl_imports::raw::c_ushort;
+pub type GLhalf = super::__gl_imports::raw::c_ushort;
+
+// Must be 32 bits
+pub type GLfixed = GLint;
+
+pub type GLintptr = isize;
+pub type GLsizeiptr = isize;
+pub type GLint64 = i64;
+pub type GLuint64 = u64;
+pub type GLintptrARB = isize;
+pub type GLsizeiptrARB = isize;
+pub type GLint64EXT = i64;
+pub type GLuint64EXT = u64;
+
+pub enum __GLsync {}
+pub type GLsync = *const __GLsync;
+
+// compatible with OpenCL cl_context
+pub enum _cl_context {}
+pub enum _cl_event {}
+
+pub type GLDEBUGPROC = Option<extern "system" fn(source: GLenum,
+                                                 gltype: GLenum,
+                                                 id: GLuint,
+                                                 severity: GLenum,
+                                                 length: GLsizei,
+                                                 message: *const GLchar,
+                                                 userParam: *mut super::__gl_imports::raw::c_void)>;
+pub type GLDEBUGPROCARB = Option<extern "system" fn(source: GLenum,
+                                                    gltype: GLenum,
+                                                    id: GLuint,
+                                                    severity: GLenum,
+                                                    length: GLsizei,
+                                                    message: *const GLchar,
+                                                    userParam: *mut super::__gl_imports::raw::c_void)>;
+pub type GLDEBUGPROCKHR = Option<extern "system" fn(source: GLenum,
+                                                    gltype: GLenum,
+                                                    id: GLuint,
+                                                    severity: GLenum,
+                                                    length: GLsizei,
+                                                    message: *const GLchar,
+                                                    userParam: *mut super::__gl_imports::raw::c_void)>;
+
+// GLES 1 types
+// "pub type GLclampx = i32;",
+
+// GLES 1/2 types (tagged for GLES 1)
+// "pub type GLbyte = i8;",
+// "pub type GLubyte = u8;",
+// "pub type GLfloat = GLfloat;",
+// "pub type GLclampf = GLfloat;",
+// "pub type GLfixed = i32;",
+// "pub type GLint64 = i64;",
+// "pub type GLuint64 = u64;",
+// "pub type GLintptr = intptr_t;",
+// "pub type GLsizeiptr = ssize_t;",
+
+// GLES 1/2 types (tagged for GLES 2 - attribute syntax is limited)
+// "pub type GLbyte = i8;",
+// "pub type GLubyte = u8;",
+// "pub type GLfloat = GLfloat;",
+// "pub type GLclampf = GLfloat;",
+// "pub type GLfixed = i32;",
+// "pub type GLint64 = i64;",
+// "pub type GLuint64 = u64;",
+// "pub type GLint64EXT = i64;",
+// "pub type GLuint64EXT = u64;",
+// "pub type GLintptr = intptr_t;",
+// "pub type GLsizeiptr = ssize_t;",
+
+// GLES 2 types (none currently)
+
+// Vendor extension types
+pub type GLDEBUGPROCAMD = Option<extern "system" fn(id: GLuint,
+                                                    category: GLenum,
+                                                    severity: GLenum,
+                                                    length: GLsizei,
+                                                    message: *const GLchar,
+                                                    userParam: *mut super::__gl_imports::raw::c_void)>;
+pub type GLhalfNV = super::__gl_imports::raw::c_ushort;
+pub type GLvdpauSurfaceNV = GLintptr;
diff --git a/third_party/rust/gl_generator/generators/templates/types/glx.rs b/third_party/rust/gl_generator/generators/templates/types/glx.rs
new file mode 100644
index 0000000000..b0078da0a1
--- /dev/null
+++ b/third_party/rust/gl_generator/generators/templates/types/glx.rs
@@ -0,0 +1,128 @@
+pub type XID = super::__gl_imports::raw::c_ulong;
+pub type Bool = super::__gl_imports::raw::c_int; // Not sure if this is correct...
+pub enum Display {}
+
+pub type Font = XID;
+pub type Pixmap = XID;
+pub enum Visual {} // TODO: not sure
+pub type VisualID = super::__gl_imports::raw::c_ulong; // TODO: not sure
+pub type Window = XID;
+pub type GLXFBConfigID = XID;
+pub type GLXFBConfig = *const super::__gl_imports::raw::c_void;
+pub type GLXContextID = XID;
+pub type GLXContext = *const super::__gl_imports::raw::c_void;
+pub type GLXPixmap = XID;
+pub type GLXDrawable = XID;
+pub type GLXWindow = XID;
+pub type GLXPbuffer = XID;
+pub enum __GLXextFuncPtr_fn {}
+pub type __GLXextFuncPtr = *mut __GLXextFuncPtr_fn;
+pub type GLXVideoCaptureDeviceNV = XID;
+pub type GLXVideoDeviceNV = super::__gl_imports::raw::c_int;
+pub type GLXVideoSourceSGIX = XID;
+pub type GLXFBConfigIDSGIX = XID;
+pub type GLXFBConfigSGIX = *const super::__gl_imports::raw::c_void;
+pub type GLXPbufferSGIX = XID;
+
+#[repr(C)]
+pub struct XVisualInfo {
+    pub visual: *mut Visual,
+    pub visualid: VisualID,
+    pub screen: super::__gl_imports::raw::c_int,
+    pub depth: super::__gl_imports::raw::c_int,
+    pub class: super::__gl_imports::raw::c_int,
+    pub red_mask: super::__gl_imports::raw::c_ulong,
+    pub green_mask: super::__gl_imports::raw::c_ulong,
+    pub blue_mask: super::__gl_imports::raw::c_ulong,
+    pub colormap_size: super::__gl_imports::raw::c_int,
+    pub bits_per_rgb: super::__gl_imports::raw::c_int,
+}
+
+#[repr(C)]
+pub struct GLXPbufferClobberEvent {
+    pub event_type: super::__gl_imports::raw::c_int, // GLX_DAMAGED or GLX_SAVED
+    pub draw_type: super::__gl_imports::raw::c_int, // GLX_WINDOW or GLX_PBUFFER
+    pub serial: super::__gl_imports::raw::c_ulong, // # of last request processed by server
+    pub send_event: Bool, // true if this came for SendEvent request
+    pub display: *const Display, // display the event was read from
+    pub drawable: GLXDrawable, // XID of Drawable
+    pub buffer_mask: super::__gl_imports::raw::c_uint, // mask indicating which buffers are affected
+    pub aux_buffer: super::__gl_imports::raw::c_uint, // which aux buffer was affected
+    pub x: super::__gl_imports::raw::c_int,
+    pub y: super::__gl_imports::raw::c_int,
+    pub width: super::__gl_imports::raw::c_int,
+    pub height: super::__gl_imports::raw::c_int,
+    pub count: super::__gl_imports::raw::c_int, // if nonzero, at least this many more
+}
+
+#[repr(C)]
+pub struct GLXBufferSwapComplete {
+    pub type_: super::__gl_imports::raw::c_int,
+    pub serial: super::__gl_imports::raw::c_ulong, // # of last request processed by server
+    pub send_event: Bool, // true if this came from a SendEvent request
+    pub display: *const Display, // Display the event was read from
+    pub drawable: GLXDrawable, // drawable on which event was requested in event mask
+    pub event_type: super::__gl_imports::raw::c_int,
+    pub ust: i64,
+    pub msc: i64,
+    pub sbc: i64,
+}
+
+// typedef union __GLXEvent {
+//     GLXPbufferClobberEvent glxpbufferclobber;
+//     GLXBufferSwapComplete glxbufferswapcomplete;
+//     long pad[24];
+// }
+
+#[repr(C)]
+pub struct GLXBufferClobberEventSGIX {
+    pub type_: super::__gl_imports::raw::c_int,
+    pub serial: super::__gl_imports::raw::c_ulong, // # of last request processed by server
+    pub send_event: Bool, // true if this came for SendEvent request
+    pub display: *const Display, // display the event was read from
+    pub drawable: GLXDrawable, // i.d. of Drawable
+    pub event_type: super::__gl_imports::raw::c_int, // GLX_DAMAGED_SGIX or GLX_SAVED_SGIX
+    pub draw_type: super::__gl_imports::raw::c_int, // GLX_WINDOW_SGIX or GLX_PBUFFER_SGIX
+    pub mask: super::__gl_imports::raw::c_uint, // mask indicating which buffers are affected
+    pub x: super::__gl_imports::raw::c_int,
+    pub y: super::__gl_imports::raw::c_int,
+    pub width: super::__gl_imports::raw::c_int,
+    pub height: super::__gl_imports::raw::c_int,
+    pub count: super::__gl_imports::raw::c_int, // if nonzero, at least this many more
+}
+
+#[repr(C)]
+pub struct GLXHyperpipeNetworkSGIX {
+    pub pipeName: [super::__gl_imports::raw::c_char; 80], // Should be [GLX_HYPERPIPE_PIPE_NAME_LENGTH_SGIX]
+    pub networkId: super::__gl_imports::raw::c_int,
+}
+
+#[repr(C)]
+pub struct GLXHyperpipeConfigSGIX {
+    pub pipeName: [super::__gl_imports::raw::c_char; 80], // Should be [GLX_HYPERPIPE_PIPE_NAME_LENGTH_SGIX]
+    pub channel: super::__gl_imports::raw::c_int,
+    pub participationType: super::__gl_imports::raw::c_uint,
+    pub timeSlice: super::__gl_imports::raw::c_int,
+}
+
+#[repr(C)]
+pub struct GLXPipeRect {
+    pub pipeName: [super::__gl_imports::raw::c_char; 80], // Should be [GLX_HYPERPIPE_PIPE_NAME_LENGTH_SGIX]
+    pub srcXOrigin: super::__gl_imports::raw::c_int,
+    pub srcYOrigin: super::__gl_imports::raw::c_int,
+    pub srcWidth: super::__gl_imports::raw::c_int,
+    pub srcHeight: super::__gl_imports::raw::c_int,
+    pub destXOrigin: super::__gl_imports::raw::c_int,
+    pub destYOrigin: super::__gl_imports::raw::c_int,
+    pub destWidth: super::__gl_imports::raw::c_int,
+    pub destHeight: super::__gl_imports::raw::c_int,
+}
+
+#[repr(C)]
+pub struct GLXPipeRectLimits {
+    pub pipeName: [super::__gl_imports::raw::c_char; 80], // Should be [GLX_HYPERPIPE_PIPE_NAME_LENGTH_SGIX]
+    pub XOrigin: super::__gl_imports::raw::c_int,
+    pub YOrigin: super::__gl_imports::raw::c_int,
+    pub maxHeight: super::__gl_imports::raw::c_int,
+    pub maxWidth: super::__gl_imports::raw::c_int,
+}
diff --git a/third_party/rust/gl_generator/generators/templates/types/wgl.rs b/third_party/rust/gl_generator/generators/templates/types/wgl.rs
new file mode 100644
index 0000000000..a376d4fa05
--- /dev/null
+++ b/third_party/rust/gl_generator/generators/templates/types/wgl.rs
@@ -0,0 +1,139 @@
+// From WinNT.h
+
+pub type CHAR = super::__gl_imports::raw::c_char;
+pub type HANDLE = PVOID;
+pub type LONG = super::__gl_imports::raw::c_long;
+pub type LPCSTR = *const super::__gl_imports::raw::c_char;
+pub type VOID = ();
+// #define DECLARE_HANDLE(name) struct name##__{int unused;}; typedef struct name##__ *name
+pub type HPBUFFERARB = *const super::__gl_imports::raw::c_void;
+pub type HPBUFFEREXT = *const super::__gl_imports::raw::c_void;
+pub type HVIDEOOUTPUTDEVICENV = *const super::__gl_imports::raw::c_void;
+pub type HPVIDEODEV = *const super::__gl_imports::raw::c_void;
+pub type HPGPUNV = *const super::__gl_imports::raw::c_void;
+pub type HGPUNV = *const super::__gl_imports::raw::c_void;
+pub type HVIDEOINPUTDEVICENV = *const super::__gl_imports::raw::c_void;
+
+// From Windef.h
+
+pub type BOOL = super::__gl_imports::raw::c_int;
+pub type BYTE = super::__gl_imports::raw::c_uchar;
+pub type COLORREF = DWORD;
+pub type FLOAT = super::__gl_imports::raw::c_float;
+pub type HDC = HANDLE;
+pub type HENHMETAFILE = HANDLE;
+pub type HGLRC = *const super::__gl_imports::raw::c_void;
+pub type INT = super::__gl_imports::raw::c_int;
+pub type PVOID = *const super::__gl_imports::raw::c_void;
+pub type LPVOID = *const super::__gl_imports::raw::c_void;
+pub enum __PROC_fn {}
+pub type PROC = *mut __PROC_fn;
+
+#[repr(C)]
+pub struct RECT {
+    left: LONG,
+    top: LONG,
+    right: LONG,
+    bottom: LONG,
+}
+
+pub type UINT = super::__gl_imports::raw::c_uint;
+pub type USHORT = super::__gl_imports::raw::c_ushort;
+pub type WORD = super::__gl_imports::raw::c_ushort;
+
+// From BaseTsd.h
+
+pub type INT32 = i32;
+pub type INT64 = i64;
+
+// From IntSafe.h
+
+pub type DWORD = super::__gl_imports::raw::c_ulong;
+
+// From Wingdi.h
+
+#[repr(C)]
+pub struct POINTFLOAT {
+    pub x: FLOAT,
+    pub y: FLOAT,
+}
+
+#[repr(C)]
+pub struct GLYPHMETRICSFLOAT {
+    pub gmfBlackBoxX: FLOAT,
+    pub gmfBlackBoxY: FLOAT,
+    pub gmfptGlyphOrigin: POINTFLOAT,
+    pub gmfCellIncX: FLOAT,
+    pub gmfCellIncY: FLOAT,
+}
+pub type LPGLYPHMETRICSFLOAT = *const GLYPHMETRICSFLOAT;
+
+#[repr(C)]
+pub struct LAYERPLANEDESCRIPTOR {
+    pub nSize: WORD,
+    pub nVersion: WORD,
+    pub dwFlags: DWORD,
+    pub iPixelType: BYTE,
+    pub cColorBits: BYTE,
+    pub cRedBits: BYTE,
+    pub cRedShift: BYTE,
+    pub cGreenBits: BYTE,
+    pub cGreenShift: BYTE,
+    pub cBlueBits: BYTE,
+    pub cBlueShift: BYTE,
+    pub cAlphaBits: BYTE,
+    pub cAlphaShift: BYTE,
+    pub cAccumBits: BYTE,
+    pub cAccumRedBits: BYTE,
+    pub cAccumGreenBits: BYTE,
+    pub cAccumBlueBits: BYTE,
+    pub cAccumAlphaBits: BYTE,
+    pub cDepthBits: BYTE,
+    pub cStencilBits: BYTE,
+    pub cAuxBuffers: BYTE,
+    pub iLayerType: BYTE,
+    pub bReserved: BYTE,
+    pub crTransparent: COLORREF,
+}
+
+#[repr(C)]
+pub struct PIXELFORMATDESCRIPTOR {
+    pub nSize: WORD,
+    pub nVersion: WORD,
+    pub dwFlags: DWORD,
+    pub iPixelType: BYTE,
+    pub cColorBits: BYTE,
+    pub cRedBits: BYTE,
+    pub cRedShift: BYTE,
+    pub cGreenBits: BYTE,
+    pub cGreenShift: BYTE,
+    pub cBlueBits: BYTE,
+    pub cBlueShift: BYTE,
+    pub cAlphaBits: BYTE,
+    pub cAlphaShift: BYTE,
+    pub cAccumBits: BYTE,
+    pub cAccumRedBits: BYTE,
+    pub cAccumGreenBits: BYTE,
+    pub cAccumBlueBits: BYTE,
+    pub cAccumAlphaBits: BYTE,
+    pub cDepthBits: BYTE,
+    pub cStencilBits: BYTE,
+    pub cAuxBuffers: BYTE,
+    pub iLayerType: BYTE,
+    pub bReserved: BYTE,
+    pub dwLayerMask: DWORD,
+    pub dwVisibleMask: DWORD,
+    pub dwDamageMask: DWORD,
+}
+
+#[repr(C)]
+pub struct _GPU_DEVICE {
+    cb: DWORD,
+    DeviceName: [CHAR; 32],
+    DeviceString: [CHAR; 128],
+    Flags: DWORD,
+    rcVirtualScreen: RECT,
+}
+
+pub struct GPU_DEVICE(_GPU_DEVICE);
+pub struct PGPU_DEVICE(*const _GPU_DEVICE);