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Showing content from https://github.com/ValveSoftware/openvr/wiki/IVROverlay::GetOverlayImageData below:

IVROverlay::GetOverlayImageData · ValveSoftware/openvr Wiki · GitHub

VROverlayError GetOverlayImageData( VROverlayHandle_t ulOverlayHandle, void *pvBuffer, uint32_t unBufferSize, uint32_t *punWidth, uint32_t *punHeight )

Gets the raw image data from an overlay.

• VROverlayHandle_t ulOverlayHandle - Overlay to get image data for
• void *pvBuffer - Application provided buffer to put image data in
• uint32_t unBufferSize - Size of the provided buffer in bytes
• uint32_t *punWidth - Width of the overlay image in pixels
• uint32_t *punHeight - Height of the overlay image in pixels

Description

Gets the raw image data from an overlay. Overlay image data is always returned as RGBA data, 4 bytes per pixel. If the buffer is not large enough, width and height will be set and VROverlayError_ArrayTooSmall is returned.

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