Name

    AMD_transform_feedback3_lines_triangles

Name Strings

    GL_AMD_transform_feedback3_lines_triangles

Contributors

    Eric Zolnowski, AMD

Contact

    Graham Sellers, AMD (graham.sellers 'at' amd.com)

Status

    Complete. Shipping in ATI Catalyst 10.6 Drivers.

Version

    Last Modified Date:         03/22/2010
    Author Revision:            1

Number

    397

Dependencies

    OpenGL 4.0 or ARB_transform_feedback3 is required.

    This extension is written against the OpenGL 4.0 (Core) Specification.

Overview

    OpenGL 4.0 introduced the ability to record primitives into multiple output
    streams using transform feedback. However, the restriction that all streams
    must output POINT primitives when more than one output stream is active was
    also introduced. This extension simply removes that restriction, allowing
    the same set of primitives to be used with multiple transform feedback
    streams as with a single stream.

New Procedures and Functions

    None.

New Tokens

    None.

Additions to Chapter 2 of the OpenGL 4.0 (Core) Specification (OpenGL Operation)

    Modify Section 2.13.4 "Geometry Shader Execution Environment"

        Replace the last paragraph of the subsection titled "Geometry Shader
        Vertex Streams", p.119, with the following:

        Geometry shaders that emit vertices into multiple vertex streams are
    currently limited to using the same output primitive type on all streams.
    A program will fail to link if it includes a geometry shader that calls
    the EmitStreamVertex buit-in function and has two or more output streams
    with different primitive types.

Additions to Chapter 3 of the OpenGL 4.0 (Core) Specification (Rasterization)

    None.

Additions to Chapter 4 of the OpenGL 4.0 (Core) Specification (Per-Fragment Operations
and the Framebuffer)

    None.

Additions to Chapter 5 of the OpenGL 4.0 (Core) Specification (Special
Functions)

    None.

Additions to Chapter 6 of the OpenGL 4.0 (Core) Specification (State and
State Requests)

    None.

Additions to the AGL/GLX/WGL Specifications

    None.

GLX Protocol

    None.

Errors

    None.

New State

    None.

New Implementation Dependent State

    None.

Issues

    None.

Revision History

    Rev.    Date      Author    Changes
    ----  --------    --------  -----------------------------------------

     1    03/22/2010  gsellers  Initial draft