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autocommit 2022-04-04 23:09:39 CEST

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Julian Orth 2022-04-04 23:09:39 +02:00
parent e897d271af
commit 5f79aab15f
21 changed files with 870 additions and 731 deletions
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143
build/egl.rs Normal file
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@ -0,0 +1,143 @@
use crate::open;
use std::fmt::Write as FmtWrite;
use std::io::Write;
fn write_egl_procs<W: Write>(f: &mut W) -> anyhow::Result<()> {
let map = [
(
"eglGetPlatformDisplayEXT",
"EGLDisplay",
&[
("platform", "EGLenum"),
("native_display", "*mut u8"),
("attrib_list", "*const EGLint"),
][..],
),
(
"eglCreateImageKHR",
"EGLImageKHR",
&[
("dpy", "EGLDisplay"),
("ctx", "EGLContext"),
("target", "EGLenum"),
("buffer", "EGLClientBuffer"),
("attrib_list", "*const EGLint"),
][..],
),
(
"eglDestroyImageKHR",
"EGLBoolean",
&[("dpy", "EGLDisplay"), ("image", "EGLImageKHR")][..],
),
(
"eglQueryDmaBufFormatsEXT",
"EGLBoolean",
&[
("dpy", "EGLDisplay"),
("max_formats", "EGLint"),
("formats", "*mut EGLint"),
("num_formats", "*mut EGLint"),
][..],
),
(
"eglQueryDmaBufModifiersEXT",
"EGLBoolean",
&[
("dpy", "EGLDisplay"),
("format", "EGLint"),
("max_modifiers", "EGLint"),
("modifiers", "*mut EGLuint64KHR"),
("external_only", "*mut EGLBoolean"),
("num_modifiers", "*mut EGLint"),
][..],
),
(
"eglDebugMessageControlKHR",
"EGLint",
&[
("callback", "EGLDEBUGPROCKHR"),
("attrib_list", "*const EGLAttrib"),
][..],
),
(
"eglQueryDisplayAttribEXT",
"EGLBoolean",
&[
("dpy", "EGLDisplay"),
("attribute", "EGLint"),
("value", "*mut EGLAttrib"),
][..],
),
(
"glEGLImageTargetRenderbufferStorageOES",
"()",
&[("target", "GLenum"), ("image", "GLeglImageOES")][..],
),
(
"glEGLImageTargetTexture2DOES",
"()",
&[("target", "GLenum"), ("image", "GLeglImageOES")][..],
),
];
writeln!(f, "use std::ptr;")?;
writeln!(f, "use super::gl::sys::*;")?;
writeln!(f, "use super::egl::sys::*;")?;
writeln!(f)?;
writeln!(f, "#[derive(Copy, Clone, Debug)]")?;
writeln!(f, "pub struct ExtProc {{")?;
for (name, _, _) in map.iter() {
writeln!(f, " {}: *mut u8,", name)?;
}
writeln!(f, "}}")?;
writeln!(f)?;
writeln!(f, "unsafe impl Sync for ExtProc {{ }}")?;
writeln!(f, "unsafe impl Send for ExtProc {{ }}")?;
writeln!(f)?;
writeln!(f, "impl ExtProc {{")?;
writeln!(f, " pub fn load() -> Self {{")?;
writeln!(f, " Self {{")?;
for (name, _, _) in map.iter().copied() {
writeln!(
f,
" {}: unsafe {{ eglGetProcAddress(\"{}\\0\".as_ptr() as _) }},",
name, name
)?;
}
writeln!(f, " }}")?;
writeln!(f, " }}")?;
for (name, ret, args) in map.iter().copied() {
let mut args_names = String::new();
let mut args_full = String::new();
let mut args_tys = String::new();
for (name, ty) in args.iter().copied() {
write!(args_full, "{}: {}, ", name, ty)?;
write!(args_names, "{}, ", name)?;
write!(args_tys, "{}, ", ty)?;
}
writeln!(f)?;
writeln!(
f,
" pub(super) unsafe fn {}(&self, {}) -> {} {{",
name, args_full, ret
)?;
writeln!(f, " if self.{}.is_null() {{", name)?;
writeln!(f, " panic!(\"Could not load `{}`\");", name)?;
writeln!(f, " }}")?;
writeln!(
f,
" ptr::read(&self.{} as *const *mut u8 as *const unsafe extern fn({}) -> {})({})",
name, args_tys, ret, args_names
)?;
writeln!(f, " }}")?;
}
writeln!(f, "}}")?;
Ok(())
}
pub fn main() -> anyhow::Result<()> {
let mut f = open("egl_procs.rs")?;
write_egl_procs(&mut f)?;
Ok(())
}