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Adds context sharing support for the X11 and Wayland backends
Separated context support for both Wayland and X11.
Add sharing support to windows.
Added CHANGELOG entry and fix doc typos
Merged @Osspial's context_api_polish changes
Marked unsafe functions that should be safe as safe.
Refactored code to be more consistent/cleaner. Ran rustfmt on everything.
Removed `shareable_with_windowed_contexts` and separate ext for OSMesa.
Merged @Yyt's macos fix.
Renamed `GlWindow` to `CombinedContext`.
We no longer load `libegl.so` and `libgl.so` multiple times.
Renamed `GlContext{,Ext}` to `ContextTrait{,Ext}`.

Signed-off-by: Hal Gentz <zegentzy@protonmail.com>
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@goddessfreya
goddessfreya committed Feb 26, 2019
1 parent c16f997 commit 9aba137
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Showing 47 changed files with 3,759 additions and 2,107 deletions.
15 changes: 15 additions & 0 deletions CHANGELOG.md
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Original file line number Diff line number Diff line change
@@ -1,5 +1,20 @@
# Unreleased

- We no longer load `libegl.so` and `libgl.so` multiple times.
- Fixes `Context::is_current` incorrectly returning `false`.
- **Breaking:** Renamed `GlContext{,Ext}` to `ContextTrait{,Ext}`.
- Implemented context sharing support for Windows and Linux.
- Added `SeparatedContext`.
- **Breaking:** Renamed `GlWindow` to `CombinedContext`.
- **Breaking:** Removed `shareable_with_windowed_contexts`. Now you must build
OsMesa contexts via a separate extension.
- Added `ContextBuilder::build` method.
- On X11 and Wayland, you can now use shared contexts, however, one limitation
of the Wayland backend is that all shared contexts must use the same events
pool as each other.
- Added context sharing support to windows.
- Improved docs.
- Refactored code to be more consistent/cleaner. Ran rustfmt on everything.
- Added NetBSD support.
- **Breaking:** Removed `new_shared` function from `Context` and `GlWindow`, in favor of `new`.
- Added `build` method to `ContextBuilder`.
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10 changes: 7 additions & 3 deletions Cargo.toml
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Expand Up @@ -18,10 +18,10 @@ icon_loading = ["winit/icon_loading"]
serde = ["winit/serde"]

[dependencies]
lazy_static = "1"
lazy_static = "1.1"
libc = "0.2"
shared_library = "0.1.0"
winit = "0.18.0"
shared_library = "0.1"
winit = "0.18"

[build-dependencies]
gl_generator = "0.10"
Expand All @@ -48,7 +48,11 @@ features = [
"libloaderapi",
]

[target.'cfg(target_os = "windows")'.dependencies]
libloading = "0.5"

[target.'cfg(any(target_os = "linux", target_os = "freebsd", target_os="dragonfly", target_os="netbsd", target_os="openbsd"))'.dependencies]
osmesa-sys = "0.1.0"
wayland-client = { version = "0.21", features = ["egl", "dlopen"] }
x11-dl = "2.18.3"
libloading = "0.5"
25 changes: 13 additions & 12 deletions README.md
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Expand Up @@ -39,35 +39,36 @@ extern crate gl;
extern crate glutin;

use glutin::dpi::*;
use glutin::GlContext;
use glutin::ContextTrait;

fn main() {
let mut events_loop = glutin::EventsLoop::new();
let window = glutin::WindowBuilder::new()
let mut el = glutin::EventsLoop::new();
let wb = glutin::WindowBuilder::new()
.with_title("Hello, world!")
.with_dimensions(LogicalSize::new(1024.0, 768.0));
let context = glutin::ContextBuilder::new()
.with_vsync(true);
let gl_window = glutin::GlWindow::new(window, context, &events_loop).unwrap();
let combined_context = glutin::ContextBuilder::new()
.with_vsync(true)
.build_combined(wb, &el)
.unwrap();

unsafe {
gl_window.make_current().unwrap();
combined_context.make_current().unwrap();
}

unsafe {
gl::load_with(|symbol| gl_window.get_proc_address(symbol) as *const _);
gl::load_with(|symbol| combined_context.get_proc_address(symbol) as *const _);
gl::ClearColor(0.0, 1.0, 0.0, 1.0);
}

let mut running = true;
while running {
events_loop.poll_events(|event| {
el.poll_events(|event| {
match event {
glutin::Event::WindowEvent{ event, .. } => match event {
glutin::WindowEvent::CloseRequested => running = false,
glutin::WindowEvent::Resized(logical_size) => {
let dpi_factor = gl_window.get_hidpi_factor();
gl_window.resize(logical_size.to_physical(dpi_factor));
let dpi_factor = combined_context.get_hidpi_factor();
combined_context.resize(logical_size.to_physical(dpi_factor));
},
_ => ()
},
Expand All @@ -79,7 +80,7 @@ fn main() {
gl::Clear(gl::COLOR_BUFFER_BIT);
}

gl_window.swap_buffers().unwrap();
combined_context.swap_buffers().unwrap();
}
}
```
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255 changes: 157 additions & 98 deletions build.rs
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
extern crate gl_generator;

use gl_generator::{Registry, Api, Profile, Fallbacks};
use gl_generator::{Api, Fallbacks, Profile, Registry};
use std::env;
use std::fs::File;
use std::path::PathBuf;
Expand All @@ -17,131 +17,190 @@ fn main() {
.write_bindings(gl_generator::StaticGenerator, &mut file)
.unwrap();

let mut file = File::create(&dest.join("wgl_extra_bindings.rs")).unwrap();
Registry::new(Api::Wgl, (1, 0), Profile::Core, Fallbacks::All, [
"WGL_ARB_create_context",
"WGL_ARB_create_context_profile",
"WGL_ARB_create_context_robustness",
"WGL_ARB_context_flush_control",
"WGL_ARB_extensions_string",
"WGL_ARB_framebuffer_sRGB",
"WGL_ARB_multisample",
"WGL_ARB_pixel_format",
"WGL_ARB_pixel_format_float",
"WGL_EXT_create_context_es2_profile",
"WGL_EXT_extensions_string",
"WGL_EXT_framebuffer_sRGB",
"WGL_EXT_swap_control",
])
.write_bindings(gl_generator::StructGenerator, &mut file).unwrap();
let mut file =
File::create(&dest.join("wgl_extra_bindings.rs")).unwrap();
Registry::new(
Api::Wgl,
(1, 0),
Profile::Core,
Fallbacks::All,
[
"WGL_ARB_create_context",
"WGL_ARB_create_context_profile",
"WGL_ARB_create_context_robustness",
"WGL_ARB_context_flush_control",
"WGL_ARB_extensions_string",
"WGL_ARB_framebuffer_sRGB",
"WGL_ARB_multisample",
"WGL_ARB_pixel_format",
"WGL_ARB_pixel_format_float",
"WGL_EXT_create_context_es2_profile",
"WGL_EXT_extensions_string",
"WGL_EXT_framebuffer_sRGB",
"WGL_EXT_swap_control",
],
)
.write_bindings(gl_generator::StructGenerator, &mut file)
.unwrap();

let mut file = File::create(&dest.join("egl_bindings.rs")).unwrap();
Registry::new(Api::Egl, (1, 5), Profile::Core, Fallbacks::All, [
"EGL_KHR_create_context",
"EGL_EXT_create_context_robustness",
"EGL_KHR_create_context_no_error",
"EGL_KHR_platform_x11",
"EGL_KHR_platform_android",
"EGL_KHR_platform_wayland",
"EGL_KHR_platform_gbm",
"EGL_EXT_platform_base",
"EGL_EXT_platform_x11",
"EGL_MESA_platform_gbm",
"EGL_EXT_platform_wayland",
"EGL_EXT_platform_device",
])
.write_bindings(gl_generator::StructGenerator, &mut file).unwrap();
Registry::new(
Api::Egl,
(1, 5),
Profile::Core,
Fallbacks::All,
[
"EGL_KHR_create_context",
"EGL_EXT_create_context_robustness",
"EGL_KHR_create_context_no_error",
"EGL_KHR_platform_x11",
"EGL_KHR_platform_android",
"EGL_KHR_platform_wayland",
"EGL_KHR_platform_gbm",
"EGL_EXT_platform_base",
"EGL_EXT_platform_x11",
"EGL_MESA_platform_gbm",
"EGL_EXT_platform_wayland",
"EGL_EXT_platform_device",
],
)
.write_bindings(gl_generator::StructGenerator, &mut file)
.unwrap();
}

if target.contains("linux") || target.contains("dragonfly") || target.contains("freebsd") || target.contains("netbsd") || target.contains("openbsd") {
if target.contains("linux")
|| target.contains("dragonfly")
|| target.contains("freebsd")
|| target.contains("netbsd")
|| target.contains("openbsd")
{
let mut file = File::create(&dest.join("glx_bindings.rs")).unwrap();
Registry::new(Api::Glx, (1, 4), Profile::Core, Fallbacks::All, [])
.write_bindings(gl_generator::StructGenerator, &mut file).unwrap();
.write_bindings(gl_generator::StructGenerator, &mut file)
.unwrap();

let mut file = File::create(&dest.join("glx_extra_bindings.rs")).unwrap();
Registry::new(Api::Glx, (1, 4), Profile::Core, Fallbacks::All, [
"GLX_ARB_create_context",
"GLX_ARB_create_context_profile",
"GLX_ARB_create_context_robustness",
"GLX_ARB_context_flush_control",
"GLX_ARB_fbconfig_float",
"GLX_ARB_framebuffer_sRGB",
"GLX_EXT_framebuffer_sRGB",
"GLX_ARB_multisample",
"GLX_EXT_swap_control",
"GLX_SGI_swap_control"
])
.write_bindings(gl_generator::StructGenerator, &mut file).unwrap();
let mut file =
File::create(&dest.join("glx_extra_bindings.rs")).unwrap();
Registry::new(
Api::Glx,
(1, 4),
Profile::Core,
Fallbacks::All,
[
"GLX_ARB_create_context",
"GLX_ARB_create_context_profile",
"GLX_ARB_create_context_robustness",
"GLX_ARB_context_flush_control",
"GLX_ARB_fbconfig_float",
"GLX_ARB_framebuffer_sRGB",
"GLX_EXT_framebuffer_sRGB",
"GLX_ARB_multisample",
"GLX_EXT_swap_control",
"GLX_SGI_swap_control",
],
)
.write_bindings(gl_generator::StructGenerator, &mut file)
.unwrap();

let mut file = File::create(&dest.join("egl_bindings.rs")).unwrap();
Registry::new(Api::Egl, (1, 5), Profile::Core, Fallbacks::All, [
"EGL_KHR_create_context",
"EGL_EXT_create_context_robustness",
"EGL_KHR_create_context_no_error",
"EGL_KHR_platform_x11",
"EGL_KHR_platform_android",
"EGL_KHR_platform_wayland",
"EGL_KHR_platform_gbm",
"EGL_EXT_platform_base",
"EGL_EXT_platform_x11",
"EGL_MESA_platform_gbm",
"EGL_EXT_platform_wayland",
"EGL_EXT_platform_device",
])
.write_bindings(gl_generator::StructGenerator, &mut file).unwrap();
Registry::new(
Api::Egl,
(1, 5),
Profile::Core,
Fallbacks::All,
[
"EGL_KHR_create_context",
"EGL_EXT_create_context_robustness",
"EGL_KHR_create_context_no_error",
"EGL_KHR_platform_x11",
"EGL_KHR_platform_android",
"EGL_KHR_platform_wayland",
"EGL_KHR_platform_gbm",
"EGL_EXT_platform_base",
"EGL_EXT_platform_x11",
"EGL_MESA_platform_gbm",
"EGL_EXT_platform_wayland",
"EGL_EXT_platform_device",
],
)
.write_bindings(gl_generator::StructGenerator, &mut file)
.unwrap();
}

if target.contains("android") {
let mut file = File::create(&dest.join("egl_bindings.rs")).unwrap();
Registry::new(Api::Egl, (1, 5), Profile::Core, Fallbacks::All, [
"EGL_KHR_create_context",
"EGL_EXT_create_context_robustness",
"EGL_KHR_create_context_no_error",
"EGL_KHR_platform_x11",
"EGL_KHR_platform_android",
"EGL_KHR_platform_wayland",
"EGL_KHR_platform_gbm",
"EGL_EXT_platform_base",
"EGL_EXT_platform_x11",
"EGL_MESA_platform_gbm",
"EGL_EXT_platform_wayland",
"EGL_EXT_platform_device",
])
.write_bindings(gl_generator::StaticStructGenerator, &mut file).unwrap();
Registry::new(
Api::Egl,
(1, 5),
Profile::Core,
Fallbacks::All,
[
"EGL_KHR_create_context",
"EGL_EXT_create_context_robustness",
"EGL_KHR_create_context_no_error",
"EGL_KHR_platform_x11",
"EGL_KHR_platform_android",
"EGL_KHR_platform_wayland",
"EGL_KHR_platform_gbm",
"EGL_EXT_platform_base",
"EGL_EXT_platform_x11",
"EGL_MESA_platform_gbm",
"EGL_EXT_platform_wayland",
"EGL_EXT_platform_device",
],
)
.write_bindings(gl_generator::StaticStructGenerator, &mut file)
.unwrap();
}

if target.contains("ios") {
let mut file = File::create(&dest.join("egl_bindings.rs")).unwrap();
Registry::new(Api::Egl, (1, 5), Profile::Core, Fallbacks::All, [
"EGL_KHR_create_context",
"EGL_EXT_create_context_robustness",
"EGL_KHR_create_context_no_error",
"EGL_KHR_platform_x11",
"EGL_KHR_platform_android",
"EGL_KHR_platform_wayland",
"EGL_KHR_platform_gbm",
"EGL_EXT_platform_base",
"EGL_EXT_platform_x11",
"EGL_MESA_platform_gbm",
"EGL_EXT_platform_wayland",
"EGL_EXT_platform_device",
])
.write_bindings(gl_generator::StaticStructGenerator, &mut file).unwrap();
Registry::new(
Api::Egl,
(1, 5),
Profile::Core,
Fallbacks::All,
[
"EGL_KHR_create_context",
"EGL_EXT_create_context_robustness",
"EGL_KHR_create_context_no_error",
"EGL_KHR_platform_x11",
"EGL_KHR_platform_android",
"EGL_KHR_platform_wayland",
"EGL_KHR_platform_gbm",
"EGL_EXT_platform_base",
"EGL_EXT_platform_x11",
"EGL_MESA_platform_gbm",
"EGL_EXT_platform_wayland",
"EGL_EXT_platform_device",
],
)
.write_bindings(gl_generator::StaticStructGenerator, &mut file)
.unwrap();

let mut file = File::create(&dest.join("gles2_bindings.rs")).unwrap();
Registry::new(Api::Gles2, (2, 0), Profile::Core, Fallbacks::None, [])
.write_bindings(gl_generator::StaticStructGenerator, &mut file).unwrap();
.write_bindings(gl_generator::StaticStructGenerator, &mut file)
.unwrap();
}

if target.contains("darwin") {
let mut file = File::create(&dest.join("gl_bindings.rs")).unwrap();
Registry::new(Api::Gl, (3, 2), Profile::Core, Fallbacks::All, ["GL_EXT_framebuffer_object"])
.write_bindings(gl_generator::GlobalGenerator, &mut file).unwrap();
Registry::new(
Api::Gl,
(3, 2),
Profile::Core,
Fallbacks::All,
["GL_EXT_framebuffer_object"],
)
.write_bindings(gl_generator::GlobalGenerator, &mut file)
.unwrap();
}

// TODO: only build the bindings below if we run tests/examples

let mut file = File::create(&dest.join("test_gl_bindings.rs")).unwrap();
Registry::new(Api::Gles2, (3, 0), Profile::Core, Fallbacks::All, [])
.write_bindings(gl_generator::StructGenerator, &mut file).unwrap();
.write_bindings(gl_generator::StructGenerator, &mut file)
.unwrap();
}
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