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Set the current alpha operation
#include <gf/gf.h>
void gf_context_set_alpha(
gf_context_t context,
gf_alpha_t const *alpha );
- context
- The graphics context to set the alpha channel for.
- alpha
- A pointer to a gf_alpha_t structure that describes the alpha blending parameters. Do not pass NULL for this parameter.
gf
This function sets the alpha blending parameters for subsequent draw operations for a draw context. Alpha blending gives you control over the opacity of pixels.
QNX Graphics Framework
Safety: | |
Interrupt handler |
No |
Signal handler |
No |
Thread |
Yes |
gf_alpha_t,
gf_context_disable_alpha()
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