mirror of
https://github.com/italicsjenga/winit-sonoma-fix.git
synced 2024-10-19 00:11:34 +11:00
48 lines
1.3 KiB
Rust
48 lines
1.3 KiB
Rust
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use HeadlessRendererBuilder;
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use libc;
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use std::{mem, ptr};
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use super::ffi;
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pub struct HeadlessContext {
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context: ffi::OSMesaContext,
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buffer: Vec<u32>,
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width: uint,
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height: uint,
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}
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impl HeadlessContext {
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pub fn new(builder: HeadlessRendererBuilder) -> Result<HeadlessContext, String> {
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Ok(HeadlessContext {
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width: builder.dimensions.0,
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height: builder.dimensions.1,
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buffer: Vec::from_elem(builder.dimensions.0 * builder.dimensions.1, unsafe { mem::uninitialized() }),
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context: unsafe {
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// TODO: check errors
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ffi::OSMesaCreateContext(0x1908, ptr::null())
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}
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})
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}
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pub unsafe fn make_current(&self) {
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ffi::OSMesaMakeCurrent(self.context,
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self.buffer.as_ptr() as *mut libc::c_void,
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0x1401, self.width as libc::c_int, self.height as libc::c_int);
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}
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pub fn get_proc_address(&self, addr: &str) -> *const () {
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use std::c_str::ToCStr;
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unsafe {
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addr.with_c_str(|s| {
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ffi::OSMesaGetProcAddress(mem::transmute(s)) as *const ()
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})
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}
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}
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}
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impl Drop for HeadlessContext {
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fn drop(&mut self) {
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unsafe { ffi::OSMesaDestroyContext(self.context) }
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}
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}
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