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Handle opaqueness a bit

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svn path=/trunk/netsurf/; revision=5935
This commit is contained in:
Chris Young 2008-12-27 18:32:20 +00:00
parent d27a1c625f
commit 78f912d5d3
2 changed files with 24 additions and 6 deletions
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29
amiga/bitmap.c
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@ -34,12 +34,17 @@ void *bitmap_create(int width, int height, unsigned int state)
{
struct bitmap *bitmap;
bitmap = AllocVec(sizeof(struct bitmap),MEMF_PRIVATE | MEMF_CLEAR);
bitmap = AllocVec(sizeof(struct bitmap),MEMF_PRIVATE);
if(bitmap)
{
bitmap->pixdata = AllocVec(width*height*4*2,MEMF_PRIVATE | MEMF_CLEAR);
bitmap->pixdata = AllocVecTags(width*height*4,
AVT_Type,MEMF_PRIVATE,
AVT_ClearWithValue,0xff,
TAG_DONE);
bitmap->width = width;
bitmap->height = height;
if(state & BITMAP_OPAQUE) bitmap->opaque = true;
else bitmap->opaque = false;
}
return bitmap;
}
@ -147,8 +152,9 @@ void bitmap_set_suspendable(void *bitmap, void *private_word,
*/
void bitmap_set_opaque(void *bitmap, bool opaque)
{
struct bitmap *bm = bitmap;
assert(bitmap);
/* todo: set bitmap as opaque */
bm->opaque = opaque;
}
@ -160,9 +166,19 @@ void bitmap_set_opaque(void *bitmap, bool opaque)
*/
bool bitmap_test_opaque(void *bitmap)
{
struct bitmap *bm = bitmap;
uint32 p = bm->width * bm->height;
uint32 a = 0;
uint32 *bmi = bm->pixdata;
assert(bitmap);
/* todo: test if bitmap as opaque */
return false;
for(a=0;a<p;a+=4)
{
if ((*bmi & 0xff000000U) != 0xff000000U) return false;
bmi++;
}
return true;
}
@ -173,9 +189,10 @@ bool bitmap_test_opaque(void *bitmap)
*/
bool bitmap_get_opaque(void *bitmap)
{
struct bitmap *bm = bitmap;
assert(bitmap);
/* todo: get whether bitmap is opaque */
return false;
return bm->opaque;
}
int bitmap_get_width(void *bitmap)

1
amiga/bitmap.h
View File

@ -23,6 +23,7 @@ struct bitmap {
int width;
int height;
UBYTE *pixdata;
bool opaque;
};
#endif