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Detect OSMesa errors

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This commit is contained in:
Pierre Krieger 2014-11-14 15:59:45 +01:00
parent 37bdb997ce
commit 9b39d99f6e
2 changed files with 13 additions and 5 deletions
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15
src/x11/headless.rs
View file

@ -1,5 +1,5 @@
use HeadlessRendererBuilder;
use CreationError;
use {CreationError, OsError};
use libc;
use std::{mem, ptr};
use super::ffi;
@ -18,16 +18,23 @@ impl HeadlessContext {
height: builder.dimensions.1,
buffer: Vec::from_elem(builder.dimensions.0 * builder.dimensions.1, unsafe { mem::uninitialized() }),
context: unsafe {
// TODO: check errors
ffi::OSMesaCreateContext(0x1908, ptr::null())
let ctxt = ffi::OSMesaCreateContext(0x1908, ptr::null());
if ctxt.is_null() {
return Err(OsError("OSMesaCreateContext failed".to_string()));
}
ctxt
}
})
}
pub unsafe fn make_current(&self) {
ffi::OSMesaMakeCurrent(self.context,
let ret = ffi::OSMesaMakeCurrent(self.context,
self.buffer.as_ptr() as *mut libc::c_void,
0x1401, self.width as libc::c_int, self.height as libc::c_int);
if ret == 0 {
panic!("OSMesaMakeCurrent failed")
}
}
pub fn get_proc_address(&self, addr: &str) -> *const () {

3
tests/headless.rs
View file

@ -32,6 +32,7 @@ fn main() {
gl.ReadPixels(0, 0, 1, 1, gl::RGBA, gl::UNSIGNED_BYTE, std::mem::transmute(&mut value));
assert!(value == (0, 255, 0, 255) || value == (0, 64, 0, 255) ||
value == (0, 64, 0, 255) || value == (0, 64, 0, 0));
value == (0, 64, 0, 255) || value == (0, 64, 0, 0),
"value is: {}", value);
}
}