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Replace the current chroma operation
#include <gf/gf.h>
void gf_context_set_chroma(
        gf_context_t context,
        gf_chroma_t const *chroma );
gf
This function replaces the chroma parameters for subsequent draw operations for a draw context. A chroma operation gives you extended control over which pixels are plotted in terms of chroma key colors and testing operations.
QNX Graphics Framework
| Safety: | |
|---|---|
| Interrupt handler | No | 
| Signal handler | No | 
| Thread | Yes | 
gf_chroma_t, gf_context_disable_chroma()
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