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Implement dissolving.

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/back/trunk@14484 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
alexm 2002-09-18 18:00:31 +00:00
parent 394041ce6e
commit 16ddf61f71
4 changed files with 506 additions and 5 deletions
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6
Source/art/blit.h
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@ -41,6 +41,7 @@ typedef struct
{
unsigned char *dst, *dsta;
unsigned char *src, *srca;
unsigned char fraction; /* for dissolving */
} composite_run_t;
@ -125,6 +126,11 @@ typedef struct draw_info_s
void (*composite_plusd_oa)(composite_run_t *c, int num);
void (*composite_plusd_ao)(composite_run_t *c, int num);
void (*composite_plusd_oo)(composite_run_t *c, int num);
void (*dissolve_aa)(composite_run_t *c, int num);
void (*dissolve_oa)(composite_run_t *c, int num);
void (*dissolve_ao)(composite_run_t *c, int num);
void (*dissolve_oo)(composite_run_t *c, int num);
} draw_info_t;
#define RENDER_RUN_ALPHA (DI.render_run_alpha)