QarRenderSenderAlphaModeExt Struct

Declares what a render sender's colour alpha means. More...

Declaration

struct QarRenderSenderAlphaModeExt { ... }

Included Headers

#include <qar-streaming-c/include/qar_streaming.h>

Public Member Attributes Index

QarColorAlphaMode	alpha_mode
QarStructureHeader	header

Description

Declares what a render sender's colour alpha means.

Chain it on QarRenderSenderInit::header.next, in any position beside the graphics extension. The stream publishes the mode, and a receiver composites by it: the QAROS mixer draws a QAR_COLOR_ALPHA_MODE_PREMULTIPLIED stream with its alpha as coverage, and a QAR_COLOR_ALPHA_MODE_OPAQUE one fully covered, whatever its alpha channel holds. A QAR_COLOR_ALPHA_MODE_STRAIGHT colour is premultiplied by the sender and published as PREMULTIPLIED. Without this extension the stream declares QAR_COLOR_ALPHA_MODE_UNSPECIFIED and the receiver keeps its own default.

A B8G8R8X8 colour has no alpha; declare nothing, or OPAQUE.

Definition at line 2280 of file qar_streaming.h.

Public Member Attributes

alpha_mode

QarColorAlphaMode QarRenderSenderAlphaModeExt::alpha_mode

The declared mode. A value this library does not know is rejected with QAR_STATUS_ARGUMENT_NOT_SUPPORTED.

Definition at line 2287 of file qar_streaming.h.

header

QarStructureHeader QarRenderSenderAlphaModeExt::header

QAR_STRUCTURE_TYPE_RENDER_SENDER_ALPHA_MODE_EXT. Set with qar_render_sender_alpha_mode_ext_default().

Definition at line 2284 of file qar_streaming.h.

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The documentation for this struct was generated from the following file:

• qar_streaming.h

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