Enumeration (GI Enum)

Cogl-18 ▶ Cogl ▶ PipelineAlphaFunc

Alpha testing happens before blending primitives with the framebuffer and gives an opportunity to discard fragments based on a comparison with the incoming alpha value and a reference alpha value. The Cogl.PipelineAlphaFunc determines how the comparison is done.

Index

Enumeration Members

ALWAYS EQUAL GEQUAL GREATER LEQUAL LESS NEVER NOTEQUAL

Enumeration Members

ALWAYS: number

Always let the fragment through.

EQUAL: number

Let the fragment through if the incoming alpha value equals the reference alpha value

GEQUAL: number

Let the fragment through if the incoming alpha value is greater than or equal to the reference alpha value.

GREATER: number

Let the fragment through if the incoming alpha value is greater than the reference alpha value

LEQUAL: number

Let the fragment through if the incoming alpha value is less than or equal to the reference alpha value

LESS: number

Let the fragment through if the incoming alpha value is less than the reference alpha value

NEVER: number

Never let the fragment through.

NOTEQUAL: number

Let the fragment through if the incoming alpha value does not equal the reference alpha value