emit_stream (sm5 - asm)
Emit a vertex to a given stream.
[in] The stream index.
This instruction causes all declared o# registers for the given stream to be read out of the geometry shader to generate a vertex. Afer the emit, all data in all output registers for all streams become uninitialized, not just the stream emitted to.
streamIndex must be an immediate value [0..3] for a declared stream.
As multiple emit_stream calls are issued, primitives are generated.
- emit_stream can appear any number of times in a geometry shader, including within flow control.
- If streams have not been declared, then you must use emit instead of emit_stream.
This instruction applies to the following shader stages:
This instruction is supported in the following shader models:
|Shader Model 5||yes|
|Shader Model 4.1||no|
|Shader Model 4||no|
|Shader Model 3 (DirectX HLSL)||no|
|Shader Model 2 (DirectX HLSL)||no|
|Shader Model 1 (DirectX HLSL)||no|