git_clone/thorvg
1
0
Fork 0
mirror of https://github.com/thorvg/thorvg.git synced 2025-06-08 21:53:41 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 5

sw_engine: fixing wrong 'if else' statement handling when gradient shapes rastered

Browse source 
The cases when composition was applied were handled only for AlphaMask and
InvAlphaMask. When opacity value was to be < 255, there was no code
to handle this.
This commit is contained in:
Mira Grudzinska 2021-05-18 02:57:48 +02:00 • committed by Hermet Park
parent d999a05750
commit edaafd99b3
1 changed files with 40 additions and 33 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

73
src/lib/sw_engine/tvgSwRaster.cpp
View file

@ -645,6 +645,7 @@ static bool _rasterOpaqueLinearGradientRect(SwSurface* surface, const SwBBox& re
buffer += surface->stride;
cbuffer += surface->stride;
}
return true;
} else if (method == CompositeMethod::InvAlphaMask) {
for (uint32_t y = 0; y < h; ++y) {
fillFetchLinear(fill, sbuffer, region.min.y + y, region.min.x, w);
@ -658,11 +659,12 @@ static bool _rasterOpaqueLinearGradientRect(SwSurface* surface, const SwBBox& re
buffer += surface->stride;
cbuffer += surface->stride;
}
return true;
}
} else {
for (uint32_t y = 0; y < h; ++y) {
fillFetchLinear(fill, buffer + y * surface->stride, region.min.y + y, region.min.x, w);
}
}
for (uint32_t y = 0; y < h; ++y) {
fillFetchLinear(fill, buffer + y * surface->stride, region.min.y + y, region.min.x, w);
}
return true;
}
@ -717,6 +719,7 @@ static bool _rasterOpaqueRadialGradientRect(SwSurface* surface, const SwBBox& re
buffer += surface->stride;
cbuffer += surface->stride;
}
return true;
} else if (method == CompositeMethod::InvAlphaMask) {
for (uint32_t y = 0; y < h; ++y) {
fillFetchRadial(fill, sbuffer, region.min.y + y, region.min.x, w);
@ -730,14 +733,14 @@ static bool _rasterOpaqueRadialGradientRect(SwSurface* surface, const SwBBox& re
buffer += surface->stride;
cbuffer += surface->stride;
}
}
} else {
for (uint32_t y = 0; y < h; ++y) {
auto dst = &buffer[y * surface->stride];
fillFetchRadial(fill, dst, region.min.y + y, region.min.x, w);
return true;
}
}
for (uint32_t y = 0; y < h; ++y) {
auto dst = &buffer[y * surface->stride];
fillFetchRadial(fill, dst, region.min.y + y, region.min.x, w);
}
return true;
}
@ -803,6 +806,7 @@ static bool _rasterOpaqueLinearGradientRle(SwSurface* surface, const SwRleData*
}
}
}
return true;
} else if (method == CompositeMethod::InvAlphaMask) {
for (uint32_t i = 0; i < rle->size; ++i, ++span) {
fillFetchLinear(fill, buf, span->y, span->x, span->len);
@ -823,21 +827,22 @@ static bool _rasterOpaqueLinearGradientRle(SwSurface* surface, const SwRleData*
}
}
}
return true;
}
} else {
for (uint32_t i = 0; i < rle->size; ++i) {
if (span->coverage == 255) {
fillFetchLinear(fill, surface->buffer + span->y * surface->stride + span->x, span->y, span->x, span->len);
} else {
fillFetchLinear(fill, buf, span->y, span->x, span->len);
auto ialpha = 255 - span->coverage;
auto dst = &surface->buffer[span->y * surface->stride + span->x];
for (uint32_t i = 0; i < span->len; ++i) {
dst[i] = ALPHA_BLEND(buf[i], span->coverage) + ALPHA_BLEND(dst[i], ialpha);
}
}
for (uint32_t i = 0; i < rle->size; ++i) {
if (span->coverage == 255) {
fillFetchLinear(fill, surface->buffer + span->y * surface->stride + span->x, span->y, span->x, span->len);
} else {
fillFetchLinear(fill, buf, span->y, span->x, span->len);
auto ialpha = 255 - span->coverage;
auto dst = &surface->buffer[span->y * surface->stride + span->x];
for (uint32_t i = 0; i < span->len; ++i) {
dst[i] = ALPHA_BLEND(buf[i], span->coverage) + ALPHA_BLEND(dst[i], ialpha);
}
++span;
}
++span;
}
return true;
}
@ -904,6 +909,7 @@ static bool _rasterOpaqueRadialGradientRle(SwSurface* surface, const SwRleData*
}
}
}
return true;
} else if (method == CompositeMethod::InvAlphaMask) {
for (uint32_t i = 0; i < rle->size; ++i, ++span) {
fillFetchRadial(fill, buf, span->y, span->x, span->len);
@ -924,21 +930,22 @@ static bool _rasterOpaqueRadialGradientRle(SwSurface* surface, const SwRleData*
}
}
}
return true;
}
} else {
for (uint32_t i = 0; i < rle->size; ++i) {
auto dst = &surface->buffer[span->y * surface->stride + span->x];
if (span->coverage == 255) {
fillFetchRadial(fill, dst, span->y, span->x, span->len);
} else {
fillFetchRadial(fill, buf, span->y, span->x, span->len);
auto ialpha = 255 - span->coverage;
for (uint32_t i = 0; i < span->len; ++i) {
dst[i] = ALPHA_BLEND(buf[i], span->coverage) + ALPHA_BLEND(dst[i], ialpha);
}
}
for (uint32_t i = 0; i < rle->size; ++i) {
auto dst = &surface->buffer[span->y * surface->stride + span->x];
if (span->coverage == 255) {
fillFetchRadial(fill, dst, span->y, span->x, span->len);
} else {
fillFetchRadial(fill, buf, span->y, span->x, span->len);
auto ialpha = 255 - span->coverage;
for (uint32_t i = 0; i < span->len; ++i) {
dst[i] = ALPHA_BLEND(buf[i], span->coverage) + ALPHA_BLEND(dst[i], ialpha);
}
++span;
}
++span;
}
return true;
}