added support for render models subsystem

examples/opengl.rs

@@ -0,0 +1,3 @@
+pub fn main() {
+    // init vr system
+}

examples/test.rs

@@ -63,19 +63,31 @@ fn main() {
     println!("\nIVRExtendedDisplay was created");
     println!("\tbounds: {:?}", ext.window_bounds());
     println!("\teye output: {:?} {:?}", ext.eye_viewport(openvr::Eye::Left), ext.eye_viewport(openvr::Eye::Right));
-/*
-    println!("Trying to create a compositor");
-    match ivr.compositor() {
-        Err(err) => println!("Could not create compositor {:?}", err),
-        Ok(comp) => {
-            println!("\tCreated one!");
-            println!("\tis fullscreen    = {}", comp.is_fullscreen());
-            println!("\tis vsync         = {}", comp.get_vsync());
-            println!("\tcan render scene = {}", comp.can_render_scene());
-            println!("\tgamma value      = {}", comp.get_gamma());
+
+    let comp = match openvr::compositor() {
+        Ok(ext) => ext,
+        Err(err) => {
+            println!("Failed to create IVRCompositor subsystem {:?}", err);
+            return;
         }
+    };
+
+    println!("\nIVRCompositor was created");
+    println!("\tis fullscreen    = {}", comp.is_fullscreen());
+    println!("\tcan render scene = {}", comp.can_render_scene());
+
+    let model = match openvr::render_models() {
+        Ok(ext) => ext,
+        Err(err) => {
+            println!("Failed to create IVRRenderModels subsystem {:?}", err);
+            return;
+        }
+    };
+
+    println!("\nIVRRenderModels was created\n Count: {}", model.get_count());
+    for i in 0..model.get_count() {
+        println!("\t{}", model.get_name(i));
     }
-    */
 
     openvr::shutdown();
     println!("Done! \\o/");

src/common.rs

@@ -51,7 +51,7 @@ pub struct TextureBounds {
 
 impl TextureBounds {
     /// Convert a bounds to a openvr_bounds
-    fn to_raw(self) -> openvr_sys::VRTextureBounds_t {
+    pub fn to_raw(self) -> openvr_sys::VRTextureBounds_t {
         openvr_sys::VRTextureBounds_t{
             uMin: self.u_min,
             uMax: self.u_max,

src/compositor.rs

@@ -1,63 +1,66 @@
+use openvr_sys;
+use openvr_sys::Enum_EGraphicsAPIConvention::*;
+use openvr_sys::Enum_EVRSubmitFlags::*;
+use openvr_sys::Enum_EColorSpace::*;
+use common::*;
 
 /// A VR compositor
-pub struct Compositor(*const ());
+pub struct IVRCompositor(*const ());
+
+impl IVRCompositor {
+    pub unsafe fn from_raw(ptr: *const ()) -> Self {
+        IVRCompositor(ptr as *mut ())
+    }
 
-impl Compositor {
     /// Check to see if the compositor is fullscreen
     pub fn is_fullscreen(&self) -> bool {
-        unsafe { openvr_sys::VR_IVRCompositor_IsFullscreen(self.0) }
+        unsafe {
+            let comp = * { self.0 as *mut openvr_sys::Struct_VR_IVRCompositor_FnTable };
+            comp.IsFullscreen.unwrap()() > 0
+        }
     }
 
-    /// Check if vsync in enabled
-    pub fn get_vsync(&self) -> Option<u64> {
-        unsafe { openvr_sys::VR_IVRCompositor_GetVSync(self.0) }
-    }
-
-    /// Set the vsync value
-    pub fn set_vsync(&self, v: bool) {
-        unsafe { openvr_sys::VR_IVRCompositor_SetVSync(self.0, v) }
-    }
-
-    /// Check if vsync in enabled
+    /// Check if compositor can render a scene
     pub fn can_render_scene(&self) -> bool {
-        unsafe { openvr_sys::VR_IVRCompositor_CanRenderScene(self.0) }
+        unsafe {
+            let comp = * { self.0 as *mut openvr_sys::Struct_VR_IVRCompositor_FnTable };
+            comp.CanRenderScene.unwrap()() > 0
+        }
     }
 
-    /// Get the gamma value
-    pub fn get_gamma(&self) -> f32 {
-        unsafe { openvr_sys::VR_IVRCompositor_GetGamma(self.0) }
-    }
-
-    /// Get the gamma value
-    pub fn set_gamma(&self, v: f32) {
-        unsafe { openvr_sys::VR_IVRCompositor_SetGamma(self.0, v) }
-    }
-
-    /// Submit an eye to the render
+    /// Submits an opengl framebuffer as an eye to the render
     pub fn submit(&self, eye: Eye, texture: usize, bounds: TextureBounds) {
         let mut b = bounds.to_raw();
         let e = eye.to_raw();
-        unsafe {
-            use std::mem;
-            let t = mem::transmute(texture);
 
-            openvr_sys::VR_IVRCompositor_Submit(
-                self.0,
+        unsafe {
+            use std;
+
+            let comp = * { self.0 as *mut openvr_sys::Struct_VR_IVRCompositor_FnTable };
+            let mut t = openvr_sys::Texture_t {
+                eType: EGraphicsAPIConvention_API_OpenGL,
+                eColorSpace: EColorSpace_ColorSpace_Auto,
+                handle: texture as *mut std::os::raw::c_void,
+            };
+
+            comp.Submit.unwrap()(
                 e,
-                openvr_sys::GraphicsAPIConvention::OpenGL,
-                t,
+                &mut t,
                 &mut b as *mut openvr_sys::VRTextureBounds_t,
-                openvr_sys::VRSubmitFlags_t::Default
+                EVRSubmitFlags_Submit_GlRenderBuffer
             );
         }
     }
 
     /// Get the poses
     pub fn wait_get_poses(&self) -> TrackedDevicePoses {
+        use std;
+
         unsafe {
+            let comp = * { self.0 as *mut openvr_sys::Struct_VR_IVRCompositor_FnTable };
             let mut data: [openvr_sys::TrackedDevicePose_t; 16] = std::mem::zeroed();
-            openvr_sys::VR_IVRCompositor_WaitGetPoses(
-                self.0,
+
+            comp.WaitGetPoses.unwrap()(
                 &mut data[0],
                 16,
                 std::ptr::null_mut(),

src/lib.rs

@@ -5,9 +5,16 @@ use openvr_sys::Enum_EVRApplicationType::*;
 pub mod common;
 pub mod system;
 pub mod extended_display;
+pub mod compositor;
+pub mod render_models;
+pub mod subsystems;
 
 pub use system::IVRSystem;
 pub use extended_display::IVRExtendedDisplay;
+pub use compositor::IVRCompositor;
+pub use render_models::IVRRenderModels;
+
+pub use subsystems::*;
 
 pub use common::Eye;
 
@@ -47,43 +54,3 @@ pub fn shutdown() {
         openvr_sys::VR_ShutdownInternal();
     }
 }
-
-/// gets the current vr system interface (initialization is required beforehand)
-pub fn system() -> Result<system::IVRSystem, openvr_sys::HmdError> {
-    let mut err = EVRInitError_VRInitError_None;
-    let name = std::ffi::CString::new("FnTable:IVRSystem_012").unwrap();
-    let ptr = unsafe {
-        openvr_sys::VR_GetGenericInterface(name.as_ptr(), &mut err)
-    };
-
-    match err {
-        EVRInitError_VRInitError_None => {
-            unsafe {
-                return Ok(IVRSystem::from_raw(ptr as *const ()));
-            }
-        },
-        _ => {
-            return Err(err);
-        }
-    }
-}
-
-/// gets the current vr extended display interface (initialization is required beforehand)
-pub fn extended_display() -> Result<IVRExtendedDisplay, openvr_sys::HmdError> {
-    let mut err = EVRInitError_VRInitError_None;
-    let name = std::ffi::CString::new("FnTable:IVRExtendedDisplay_001").unwrap();
-    let ptr = unsafe {
-        openvr_sys::VR_GetGenericInterface(name.as_ptr(), &mut err)
-    };
-
-    match err {
-        EVRInitError_VRInitError_None => {
-            unsafe {
-                return Ok(IVRExtendedDisplay::from_raw(ptr as *const ()));
-            }
-        },
-        _ => {
-            return Err(err);
-        }
-    }
-}

src/render_models.rs

@@ -0,0 +1,106 @@
+use openvr_sys;
+use openvr_sys::Enum_EVRRenderModelError::*;
+
+use std::string::String;
+use std::ptr::null_mut;
+use std::slice;
+use subsystems::render_models;
+
+pub struct IVRRenderModels(*const ());
+
+pub struct RenderModel(*mut openvr_sys::RenderModel_t);
+
+impl Drop for RenderModel {
+    /// will inform openvr that the memory for the render model is no longer required
+    fn drop (&mut self) {
+        unsafe {
+            let models = * { render_models().unwrap().0 as *mut openvr_sys::Struct_VR_IVRRenderModels_FnTable};
+            models.FreeRenderModel.unwrap()(
+                self.0
+            );
+        }
+    }
+}
+
+impl RenderModel {
+    /// Returns an iterator that iterates over vertices
+    pub fn vertex_iter(&self) -> slice::Iter<openvr_sys::RenderModel_Vertex_t> {
+        unsafe {
+            let slice = slice::from_raw_parts((*self.0).rVertexData, (*self.0).unVertexCount as usize);
+            slice.iter()
+        }
+    }
+
+    /// Returns an iterator that iterates over indices
+    pub fn index_iter(&self) -> slice::Iter<u16> {
+        unsafe {
+            let slice = slice::from_raw_parts((*self.0).rIndexData, (*self.0).unTriangleCount as usize);
+            slice.iter()
+        }
+    }
+
+    /// returns the unique identifier for the texture that the models uses
+    pub fn texture_identifier(&self) -> usize {
+        unsafe {
+            (*self.0).diffuseTextureId as usize
+        }
+    }
+}
+
+impl IVRRenderModels {
+    pub unsafe fn from_raw(ptr: *const ()) -> Self {
+        IVRRenderModels(ptr as *mut ())
+    }
+
+    /// Returns the amount of render models available
+    pub fn get_count(&self) -> u32 {
+        unsafe {
+            let models = * { self.0 as *mut openvr_sys::Struct_VR_IVRRenderModels_FnTable};
+
+            models.GetRenderModelCount.unwrap()()
+        }
+    }
+
+    /// Returns the name of an available render model
+    pub fn get_name(&self, index: u32) -> String {
+        unsafe {
+            let models = * { self.0 as *mut openvr_sys::Struct_VR_IVRRenderModels_FnTable};
+            let name_out = String::with_capacity(256);
+
+            let size = models.GetRenderModelName.unwrap()(
+                index,
+                name_out.as_ptr() as *mut i8,
+                256
+            );
+
+            if size > 0 {
+                return String::from_raw_parts(name_out.as_ptr() as *mut _, (size - 1) as usize, (size - 1) as usize);
+            } else {
+                return String::from("");
+            }
+        };
+    }
+
+    /// Loads an render model into local memory
+    pub fn load(&self, name: String) -> Result<RenderModel, openvr_sys::EVRRenderModelError> {
+        unsafe {
+            let models = * { self.0 as *mut openvr_sys::Struct_VR_IVRRenderModels_FnTable};
+            let mut resp: *mut openvr_sys::RenderModel_t = null_mut();
+
+            let err = models.LoadRenderModel_Async.unwrap()(
+                name.as_ptr() as *mut i8,
+                &mut resp
+            );
+
+            match err {
+                EVRRenderModelError_VRRenderModelError_None => {
+                    Ok(RenderModel ( resp ))
+                },
+                _ => {
+                    Err(err)
+                }
+            }
+
+        }
+    }
+}

src/subsystems.rs

@@ -0,0 +1,89 @@
+extern crate openvr_sys;
+use openvr_sys::Enum_EVRInitError::*;
+
+use system::IVRSystem;
+use extended_display::IVRExtendedDisplay;
+use compositor::IVRCompositor;
+use render_models::IVRRenderModels;
+
+use std;
+
+/// gets the current vr system interface (initialization is required beforehand)
+pub fn system() -> Result<IVRSystem, openvr_sys::HmdError> {
+    let mut err = EVRInitError_VRInitError_None;
+    let name = std::ffi::CString::new("FnTable:IVRSystem_012").unwrap();
+    let ptr = unsafe {
+        openvr_sys::VR_GetGenericInterface(name.as_ptr(), &mut err)
+    };
+
+    match err {
+        EVRInitError_VRInitError_None => {
+            unsafe {
+                return Ok(IVRSystem::from_raw(ptr as *const ()));
+            }
+        },
+        _ => {
+            return Err(err);
+        }
+    }
+}
+
+/// gets the current vr extended display interface (initialization is required beforehand)
+pub fn extended_display() -> Result<IVRExtendedDisplay, openvr_sys::HmdError> {
+    let mut err = EVRInitError_VRInitError_None;
+    let name = std::ffi::CString::new("FnTable:IVRExtendedDisplay_001").unwrap();
+    let ptr = unsafe {
+        openvr_sys::VR_GetGenericInterface(name.as_ptr(), &mut err)
+    };
+
+    match err {
+        EVRInitError_VRInitError_None => {
+            unsafe {
+                return Ok(IVRExtendedDisplay::from_raw(ptr as *const ()));
+            }
+        },
+        _ => {
+            return Err(err);
+        }
+    }
+}
+
+/// gets the current vr extended display interface (initialization is required beforehand)
+pub fn compositor() -> Result<IVRCompositor, openvr_sys::HmdError> {
+    let mut err = EVRInitError_VRInitError_None;
+    let name = std::ffi::CString::new("FnTable:IVRCompositor_013").unwrap();
+    let ptr = unsafe {
+        openvr_sys::VR_GetGenericInterface(name.as_ptr(), &mut err)
+    };
+
+    match err {
+        EVRInitError_VRInitError_None => {
+            unsafe {
+                return Ok(IVRCompositor::from_raw(ptr as *const ()));
+            }
+        },
+        _ => {
+            return Err(err);
+        }
+    }
+}
+
+/// gets the current vr extended display interface (initialization is required beforehand)
+pub fn render_models() -> Result<IVRRenderModels, openvr_sys::HmdError> {
+    let mut err = EVRInitError_VRInitError_None;
+    let name = std::ffi::CString::new("FnTable:IVRRenderModels_005").unwrap();
+    let ptr = unsafe {
+        openvr_sys::VR_GetGenericInterface(name.as_ptr(), &mut err)
+    };
+
+    match err {
+        EVRInitError_VRInitError_None => {
+            unsafe {
+                return Ok(IVRRenderModels::from_raw(ptr as *const ()));
+            }
+        },
+        _ => {
+            return Err(err);
+        }
+    }
+}