SampleAlphaToCoverageEnable
Keywords: SampleAlphaToCoverageEnable, NVIDIA, NVIDIA Cg Toolkit, Cg Toolkit, Shader, Shader Programming, GPU Shader Programming, GPU Program

> ## Name

> SampleAlphaToCoverageEnable - 3D API sample alpha to coverage enable

> ## Usage

> SampleAlphaToCoverageEnable = bool(enable)

> ## Valid Enumerants

> enable: true, false

> ## Description

> Enable/disable OpenGL alpha coverage sampling. See the GL_SAMPLE_ALPHA_TO_COVERAGE_ARB description on the OpenGL glEnable manual page for details.

> The standard reset callback sets the SampleAlphaToCoverageEnable state to bool(false).

> ## Opengl Functionality Requirements

> OpenGL 1.3 or support for extension ARB_multisample.

> ## Direct3D Functionality Requirements

> Not applicable.

> ## See Also

> SampleAlphaToOneEnable, SampleCoverageEnable, MultiSampleAntialias, MultiSampleMask, MultisampleEnable