git_clone/thorvg
1
0
Fork 0
mirror of https://github.com/thorvg/thorvg.git synced 2025-06-08 05:33:36 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 5

sw_engine: fixed a broken dropshadow

Browse source 
corrected a mismatched stride value of the
direct drawing target buffer.

issue: https://github.com/thorvg/thorvg/issues/3146
This commit is contained in:
Hermet Park 2025-02-07 23:38:06 +09:00
parent c1290a8205
commit ab950b6321
1 changed files with 9 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

18
src/renderer/sw_engine/tvgSwPostEffect.cpp
View file

@ -267,10 +267,10 @@ static void _dropShadowFilter(uint32_t* dst, uint32_t* src, int stride, int w, i
}
static void _dropShadowShift(uint32_t* dst, uint32_t* src, int stride, SwBBox& region, SwPoint& offset, uint8_t opacity, bool direct)
static void _dropShadowShift(uint32_t* dst, uint32_t* src, int dstride, int sstride, SwBBox& region, SwPoint& offset, uint8_t opacity, bool direct)
{
src += (region.min.y * stride + region.min.x);
dst += (region.min.y * stride + region.min.x);
src += (region.min.y * sstride + region.min.x);
dst += (region.min.y * dstride + region.min.x);
auto w = region.max.x - region.min.x;
auto h = region.max.y - region.min.y;
@ -280,14 +280,14 @@ static void _dropShadowShift(uint32_t* dst, uint32_t* src, int stride, SwBBox& r
if (region.min.x + offset.x < 0) src -= offset.x;
else dst += offset.x;
if (region.min.y + offset.y < 0) src -= (offset.y * stride);
else dst += (offset.y * stride);
if (region.min.y + offset.y < 0) src -= (offset.y * sstride);
else dst += (offset.y * dstride);
for (auto y = 0; y < h; ++y) {
if (translucent) rasterTranslucentPixel32(dst, src, w, opacity);
else rasterPixel32(dst, src, w, opacity);
src += stride;
dst += stride;
src += sstride;
dst += dstride;
}
}
@ -390,14 +390,14 @@ bool effectDropShadow(SwCompositor* cmp, SwSurface* surface[2], const RenderEffe
//draw to the main surface directly
if (direct) {
_dropShadowShift(cmp->recoverSfc->buf32, cmp->image.buf32, stride, bbox, data->offset, opacity, direct);
_dropShadowShift(cmp->recoverSfc->buf32, cmp->image.buf32, cmp->recoverSfc->stride, stride, bbox, data->offset, opacity, direct);
std::swap(cmp->image.buf32, buffer[0]->buf32);
return true;
}
//draw to the intermediate surface
rasterClear(surface[1], bbox.min.x, bbox.min.y, w, h);
_dropShadowShift(buffer[1]->buf32, cmp->image.buf32, stride, bbox, data->offset, opacity, direct);
_dropShadowShift(buffer[1]->buf32, cmp->image.buf32, stride, stride, bbox, data->offset, opacity, direct);
std::swap(cmp->image.buf32, buffer[1]->buf32);
//compositing shadow and body