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ector software: Be careful at alloca() usage. 

allocate one spare span memory then reuse it.
This commit is contained in:
Hermet Park 2018-12-07 19:54:41 +09:00
parent fbe92aa67f
commit e6f66e56fd
1 changed files with 10 additions and 2 deletions
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12
src/lib/ector/software/ector_software_rasterizer.c
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@ -49,12 +49,16 @@ _blend_color_argb_with_maskA(int count, const SW_FT_Span *spans, void *user_data
sd->raster_buffer->pixels.u32 + ((pix_stride * sd->offy) + sd->offx);
uint32_t *mbuffer = mask->pixels.u32;
//Temp buffer for intermediate processing
int tsize = sd->raster_buffer->generic->w;
uint32_t *tbuffer = alloca(sizeof(uint32_t) * tsize);
while (count--)
{
uint32_t *target = buffer + ((pix_stride * spans->y) + spans->x);
uint32_t *mtarget =
mbuffer + ((mask->generic->w * spans->y) + spans->x);
uint32_t *temp = alloca(sizeof(uint32_t) * spans->len);
uint32_t *temp = tbuffer;
memset(temp, 0x00, sizeof(uint32_t) * spans->len);
comp_func(temp, spans->len, color, spans->coverage);
@ -88,12 +92,16 @@ _blend_color_argb_with_maskInvA(int count, const SW_FT_Span *spans, void *user_d
sd->raster_buffer->pixels.u32 + ((pix_stride * sd->offy) + sd->offx);
uint32_t *mbuffer = mask->pixels.u32;
//Temp buffer for intermediate processing
int tsize = sd->raster_buffer->generic->w;
uint32_t *tbuffer = alloca(sizeof(uint32_t) * tsize);
while (count--)
{
uint32_t *target = buffer + ((pix_stride * spans->y) + spans->x);
uint32_t *mtarget =
mbuffer + ((mask->generic->w * spans->y) + spans->x);
uint32_t *temp = alloca(sizeof(uint32_t) * spans->len);
uint32_t *temp = tbuffer;
memset(temp, 0x00, sizeof(uint32_t) * spans->len);
comp_func(temp, spans->len, color, spans->coverage);