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render: load libEGL and libGLESv2 at runtime

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This commit is contained in:
Julian Orth 2024-02-22 21:14:40 +01:00
parent aa9ca29996
commit 0c82f02b26
15 changed files with 337 additions and 259 deletions
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15
src/gfx_apis/gl/egl.rs
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@ -1,12 +1,13 @@
use {
crate::gfx_apis::gl::{
egl::sys::{
eglBindAPI, EGLAttrib, EGLLabelKHR, EGLenum, EGLint, EGL_DEBUG_MSG_CRITICAL_KHR,
EGLAttrib, EGLLabelKHR, EGLenum, EGLint, EGL_DEBUG_MSG_CRITICAL_KHR,
EGL_DEBUG_MSG_ERROR_KHR, EGL_DEBUG_MSG_INFO_KHR, EGL_DEBUG_MSG_WARN_KHR, EGL_NONE,
EGL_OPENGL_ES_API, EGL_TRUE,
},
ext::{get_client_ext, ClientExt, EXT_PLATFORM_BASE, KHR_DEBUG, KHR_PLATFORM_GBM},
proc::ExtProc,
sys::EGL,
RenderError,
},
bstr::ByteSlice,
@ -27,11 +28,17 @@ pub mod display;
pub mod image;
pub mod sys;
pub(crate) static PROCS: Lazy<ExtProc> = Lazy::new(ExtProc::load);
pub(crate) static PROCS: Lazy<Option<ExtProc>> = Lazy::new(ExtProc::load);
pub(crate) static EXTS: Lazy<ClientExt> = Lazy::new(get_client_ext);
pub(in crate::gfx_apis::gl) fn init() -> Result<(), RenderError> {
let Some(egl) = EGL.as_ref() else {
return Err(RenderError::LoadEgl);
};
let Some(procs) = PROCS.as_ref() else {
return Err(RenderError::LoadEglProcs);
};
if !EXTS.contains(EXT_PLATFORM_BASE) {
return Err(RenderError::ExtPlatformBase);
}
@ -51,10 +58,10 @@ pub(in crate::gfx_apis::gl) fn init() -> Result<(), RenderError> {
EGL_NONE as _,
];
unsafe {
PROCS.eglDebugMessageControlKHR(egl_log, attrib.as_ptr());
procs.eglDebugMessageControlKHR(egl_log, attrib.as_ptr());
}
}
if unsafe { eglBindAPI(EGL_OPENGL_ES_API) } != EGL_TRUE {
if unsafe { (egl.eglBindAPI)(EGL_OPENGL_ES_API) } != EGL_TRUE {
return Err(RenderError::BindFailed);
}
Ok(())