Struct ovr_sys::ovrLayerEyeMatrix

#[repr(C)]
pub struct ovrLayerEyeMatrix {
    pub _align: [isize; 0],
    pub Header: ovrLayerHeader,
    pub ColorTexture: [ovrTextureSwapChain; 2],
    pub Viewport: [ovrRecti; 2],
    pub RenderPose: [ovrPosef; 2],
    pub Matrix: [ovrMatrix4f; 2],
    pub SensorSampleTime: f64,
}

Describes a layer that specifies a monoscopic or stereoscopic view.

This uses a direct 3x4 matrix to map from view space to the UV coordinates.

It is essentially the same thing as ovrLayerEyeFov but using a much lower level. This is mainly to provide compatibility with specific apps.

Unless the application really requires this flexibility, it is usually better to use ovrLayerEyeFov.

Three options exist with respect to mono/stereo texture usage: * ColorTexture[0] and ColorTexture[1] contain the left and right stereo renderings, respectively. Viewport[0] and Viewport[1] refer to ColorTexture[0] and ColorTexture[1], respectively. * ColorTexture[0] contains both the left and right renderings, ColorTexture[1] is NULL, and Viewport[0] and Viewport[1] refer to sub-rects with ColorTexture[0]. * ColorTexture[0] contains a single monoscopic rendering, and Viewport[0] and Viewport[1] both refer to that rendering.

see ovrTextureSwapChain, ovr_SubmitFrame

Fields

_align: [isize; 0]

Header: ovrLayerHeader

Header.Type must be ovrLayerType_EyeMatrix.

ColorTexture: [ovrTextureSwapChain; 2]

ovrTextureSwapChains for the left and right eye respectively.

The second one of which can be NULL for cases described above.

Viewport: [ovrRecti; 2]

Specifies the ColorTexture sub-rect UV coordinates.

Both Viewport[0] and Viewport[1] must be valid.

RenderPose: [ovrPosef; 2]

Specifies the position and orientation of each eye view, with the position specified in meters.

RenderPose will typically be the value returned from ovr_CalcEyePoses, but can be different in special cases if a different head pose is used for rendering.

Matrix: [ovrMatrix4f; 2]

Specifies the mapping from a view-space vector to a UV coordinate on the textures given above.

P = (x,y,z,1)*Matrix TexU = P.x/P.z TexV = P.y/P.z

SensorSampleTime: f64

Specifies the timestamp when the source ovrPosef (used in calculating RenderPose) was sampled from the SDK. Typically retrieved by calling ovr_GetTimeInSeconds around the instant the application calls ovr_GetTrackingState The main purpose for this is to accurately track app tracking latency.

Trait Implementations

impl Debug for ovrLayerEyeMatrix

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Copy for ovrLayerEyeMatrix

impl Clone for ovrLayerEyeMatrix

fn clone(&self) -> ovrLayerEyeMatrix

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.