125 lines
3.6 KiB
Rust
125 lines
3.6 KiB
Rust
use {
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crate::{
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render::{
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egl::sys::{eglQueryString, EGLDisplay, EGL_EXTENSIONS},
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gl::sys::{glGetString, GL_EXTENSIONS},
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},
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utils::trim::AsciiTrim,
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},
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ahash::AHashSet,
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bstr::ByteSlice,
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std::{ffi::CStr, ops::BitOrAssign, str},
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uapi::c,
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};
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unsafe fn get_extensions(ext: *const c::c_char) -> Option<AHashSet<String>> {
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if ext.is_null() {
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return None;
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}
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let mut res = AHashSet::new();
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let ext = CStr::from_ptr(ext).to_bytes();
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for part in ext.split_str(" ") {
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let name = part.trim();
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if name.len() > 0 {
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if let Ok(s) = str::from_utf8(name) {
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res.insert(s.to_string());
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}
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}
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}
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Some(res)
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}
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unsafe fn get_dpy_extensions(dpy: EGLDisplay) -> Option<AHashSet<String>> {
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let ext = eglQueryString(dpy, EGL_EXTENSIONS);
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get_extensions(ext)
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}
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fn get_typed_ext<T>(exts: &AHashSet<String>, mut base: T, map: &[(&str, T)]) -> T
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where
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T: BitOrAssign + Copy,
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{
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for (name, ext) in map.iter().copied() {
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if exts.contains(name) {
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base |= ext;
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}
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}
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base
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}
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bitflags::bitflags! {
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pub struct ClientExt: u32 {
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const EXT_CLIENT_EXTENSION = 1 << 0;
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const EXT_PLATFORM_BASE = 1 << 1;
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const KHR_PLATFORM_GBM = 1 << 2;
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const KHR_DEBUG = 1 << 3;
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}
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}
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pub fn get_client_ext() -> ClientExt {
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let map = [
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("EGL_EXT_platform_base", ClientExt::EXT_PLATFORM_BASE),
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("EGL_KHR_platform_gbm", ClientExt::KHR_PLATFORM_GBM),
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("EGL_KHR_debug", ClientExt::KHR_DEBUG),
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];
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match unsafe { get_dpy_extensions(EGLDisplay::none()) } {
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Some(exts) => get_typed_ext(&exts, ClientExt::EXT_CLIENT_EXTENSION, &map),
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_ => ClientExt::empty(),
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}
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}
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bitflags::bitflags! {
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pub struct DisplayExt: u32 {
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const KHR_IMAGE_BASE = 1 << 0;
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const EXT_IMAGE_DMA_BUF_IMPORT = 1 << 1;
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const EXT_IMAGE_DMA_BUF_IMPORT_MODIFIERS = 1 << 2;
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const KHR_NO_CONFIG_CONTEXT = 1 << 3;
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const MESA_CONFIGLESS_CONTEXT = 1 << 4;
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const KHR_SURFACELESS_CONTEXT = 1 << 5;
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const IMG_CONTEXT_PRIORITY = 1 << 6;
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}
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}
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pub(super) unsafe fn get_display_ext(dpy: EGLDisplay) -> DisplayExt {
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let map = [
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("EGL_KHR_image_base", DisplayExt::KHR_IMAGE_BASE),
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(
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"EGL_EXT_image_dma_buf_import",
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DisplayExt::EXT_IMAGE_DMA_BUF_IMPORT,
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),
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(
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"EGL_EXT_image_dma_buf_import_modifiers",
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DisplayExt::EXT_IMAGE_DMA_BUF_IMPORT_MODIFIERS,
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),
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(
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"EGL_KHR_no_config_context",
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DisplayExt::KHR_NO_CONFIG_CONTEXT,
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),
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(
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"EGL_MESA_configless_context",
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DisplayExt::MESA_CONFIGLESS_CONTEXT,
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),
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(
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"EGL_KHR_surfaceless_context",
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DisplayExt::KHR_SURFACELESS_CONTEXT,
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),
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("EGL_IMG_context_priority", DisplayExt::IMG_CONTEXT_PRIORITY),
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];
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match get_dpy_extensions(dpy) {
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Some(exts) => get_typed_ext(&exts, DisplayExt::empty(), &map),
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_ => DisplayExt::empty(),
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}
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}
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bitflags::bitflags! {
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pub struct GlExt: u32 {
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const GL_OES_EGL_IMAGE = 1 << 0;
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}
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}
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pub fn get_gl_ext() -> GlExt {
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let map = [("GL_OES_EGL_image", GlExt::GL_OES_EGL_IMAGE)];
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match unsafe { get_extensions(glGetString(GL_EXTENSIONS) as _) } {
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Some(exts) => get_typed_ext(&exts, GlExt::empty(), &map),
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_ => GlExt::empty(),
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}
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}
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