Enumeration
CoglPipelineAlphaFunc
Description [src]
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 CoglPipelineAlphaFunc
determines how the comparison is done.
Members
- 
            COGL_PIPELINE_ALPHA_FUNC_NEVER
- 
            Never let the fragment through. - Value: 512
- Available since: 16
 
- Value: 
- 
            COGL_PIPELINE_ALPHA_FUNC_LESS
- 
            Let the fragment through if the incoming alpha value is less than the reference alpha value. - Value: 513
- Available since: 16
 
- Value: 
- 
            COGL_PIPELINE_ALPHA_FUNC_EQUAL
- 
            Let the fragment through if the incoming alpha value equals the reference alpha value. - Value: 514
- Available since: 16
 
- Value: 
- 
            COGL_PIPELINE_ALPHA_FUNC_LEQUAL
- 
            Let the fragment through if the incoming alpha value is less than or equal to the reference alpha value. - Value: 515
- Available since: 16
 
- Value: 
- 
            COGL_PIPELINE_ALPHA_FUNC_GREATER
- 
            Let the fragment through if the incoming alpha value is greater than the reference alpha value. - Value: 516
- Available since: 16
 
- Value: 
- 
            COGL_PIPELINE_ALPHA_FUNC_NOTEQUAL
- 
            Let the fragment through if the incoming alpha value does not equal the reference alpha value. - Value: 517
- Available since: 16
 
- Value: 
- 
            COGL_PIPELINE_ALPHA_FUNC_GEQUAL
- 
            Let the fragment through if the incoming alpha value is greater than or equal to the reference alpha value. - Value: 518
- Available since: 16
 
- Value: 
- 
            COGL_PIPELINE_ALPHA_FUNC_ALWAYS
- 
            Always let the fragment through. - Value: 519
- Available since: 16
 
- Value: