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extern crate renderdoc_api_sys as sys;
#[cfg(unix)]
extern crate libc;
#[cfg(windows)]
extern crate kernel32;
#[cfg(windows)]
extern crate winapi;
use std::mem;
use std::os::raw::{c_int, c_char};
pub struct Context {
table: &'static sys::RENDERDOC_API_1_1_1,
}
impl Context {
pub fn new() -> Option<Self> {
#[cfg(unix)]
let entry = unsafe {
let lib = libc::dlopen(b"librenderdoc.so\0".as_ptr() as *const c_char,
libc::RTLD_NOLOAD);
if lib.is_null() { return None; }
let entry = libc::dlsym(lib, b"RENDERDOC_GetAPI\0".as_ptr() as *const c_char);
if entry.is_null() { return None; }
mem::transmute::<_, sys::pRENDERDOC_GetAPI>(entry).unwrap()
};
#[cfg(windows)]
let entry = unsafe {
let module = kernel32::GetModuleHandleA(b"renderdoc.dll\0".as_ptr() as *const c_char);
if module.is_null() { return None; }
let entry = kernel32::GetProcAddress(module, b"RENDERDOC_GetAPI\0".as_ptr() as *const c_char);
if entry.is_null() { return None; }
mem::transmute::<_, sys::pRENDERDOC_GetAPI>(entry).unwrap()
};
unsafe {
let mut table: *mut sys::RENDERDOC_API_1_1_1 = mem::uninitialized();
let status = entry(sys::eRENDERDOC_API_Version_1_1_1, &mut table as *mut _ as *mut _);
if status == 0 { return None; }
Some(Context { table: &*table })
}
}
pub fn get_api_version(&self) -> (c_int, c_int, c_int) {
unsafe {
let mut result: (c_int, c_int, c_int) = mem::uninitialized();
self.table.GetAPIVersion.unwrap()(&mut result.0, &mut result.1, &mut result.2);
result
}
}
pub unsafe fn start_frame_capture(&self, device: sys::RENDERDOC_DevicePointer, window: sys::RENDERDOC_WindowHandle) {
self.table.StartFrameCapture.unwrap()(device, window);
}
pub fn is_frame_capturing(&self) -> bool { unsafe { self.table.IsFrameCapturing.unwrap()() != 0 } }
pub unsafe fn end_frame_capture(&self, device: sys::RENDERDOC_DevicePointer, window: sys::RENDERDOC_WindowHandle) {
self.table.EndFrameCapture.unwrap()(device, window);
}
}