git_clone/thorvg
1
0
Fork 0
mirror of https://github.com/thorvg/thorvg.git synced 2025-06-08 13:43:43 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 5

sw_engine: fixing linear gradient rastering for shapes with composition

Browse source 
Masking and Inverse masking are for now rastered properly only for the linear
gradients without the opacity.
This commit is contained in:
Mira Grudzinska 2021-04-01 03:09:43 +02:00 • committed by Hermet Park
parent cd6fb4f483
commit fe32ca8de7
1 changed files with 42 additions and 35 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

69
src/lib/sw_engine/tvgSwRaster.cpp
View file

@ -616,7 +616,6 @@ static bool _rasterLinearGradientRect(SwSurface* surface, const SwBBox& region,
//Translucent Gradient
if (fill->translucent) {
auto tmpBuf = static_cast<uint32_t*>(alloca(surface->w * sizeof(uint32_t)));
if (!tmpBuf) return false;
@ -631,24 +630,35 @@ static bool _rasterLinearGradientRect(SwSurface* surface, const SwBBox& region,
} else {
if (surface->compositor) {
auto method = surface->compositor->method;
uint32_t *shape = fill->ctable;
auto cbuffer = surface->compositor->image.data + (region.min.y * surface->stride) + region.min.x;
auto sbuffer = shape + (region.min.y ) + region.min.x;
for (uint32_t y = 0; y < h; ++y) {
auto dst = &buffer[y * surface->stride];
auto cmp = &cbuffer[y * surface->stride];
auto src = &sbuffer[y];
auto sbuffer = static_cast<uint32_t*>(alloca(w * sizeof(uint32_t)));
if (!sbuffer) return false;
if (method == CompositeMethod::AlphaMask) {
for (uint32_t x = 0; x < w; ++x, ++dst, ++cmp) {
for (uint32_t y = 0; y < h; ++y) {
fillFetchLinear(fill, sbuffer, region.min.y + y, region.min.x, 0, w);
auto dst = buffer;
auto cmp = cbuffer;
auto src = sbuffer;
for (uint32_t x = 0; x < w; ++x, ++dst, ++cmp, ++src) {
auto tmp = ALPHA_BLEND(*src, surface->blender.alpha(*cmp));
*dst = tmp + ALPHA_BLEND(*dst, surface->blender.alpha(tmp));
*dst = tmp + ALPHA_BLEND(*dst, 255 - surface->blender.alpha(tmp));
}
buffer += surface->stride;
cbuffer += surface->stride;
}
if (method == CompositeMethod::InvAlphaMask) {
for (uint32_t x = 0; x < w; ++x, ++dst, ++cmp) {
} else if (method == CompositeMethod::InvAlphaMask) {
for (uint32_t y = 0; y < h; ++y) {
fillFetchLinear(fill, sbuffer, region.min.y + y, region.min.x, 0, w);
auto dst = buffer;
auto cmp = cbuffer;
auto src = sbuffer;
for (uint32_t x = 0; x < w; ++x, ++dst, ++cmp, ++src) {
auto tmp = ALPHA_BLEND(*src, 255 - surface->blender.alpha(*cmp));
*dst = tmp + ALPHA_BLEND(*dst, 255 - surface->blender.alpha(tmp));
}
buffer += surface->stride;
cbuffer += surface->stride;
}
}
} else {
@ -724,32 +734,29 @@ static bool _rasterLinearGradientRle(SwSurface* surface, const SwRleData* rle, c
if (surface->compositor) {
auto method = surface->compositor->method;
auto cbuffer = surface->compositor->image.data;
auto tbuffer = static_cast<uint32_t*>(alloca(sizeof(uint32_t) * surface->w));
auto sbuffer = fill->ctable;
for (uint32_t i = 0; i < rle->size; ++i) {
if (method == CompositeMethod::AlphaMask) {
for (uint32_t i = 0; i < rle->size; ++i, ++span) {
fillFetchLinear(fill, buf, span->y, span->x, 0, span->len);
auto dst = &surface->buffer[span->y * surface->stride + span->x];
auto cmp = &cbuffer[span->y * surface->stride + span->x];
auto tmp = tbuffer;
auto src = &sbuffer[span->y];
if (method == CompositeMethod::AlphaMask) {
for (uint32_t x = 0; x < span->len; ++x) {
auto ialpha = surface->blender.alpha(*cmp);
*tmp = ALPHA_BLEND(*src, ialpha);
dst[x] = *tmp + ALPHA_BLEND(dst[x], 255 - surface->blender.alpha(*tmp));
++tmp;
++cmp;
auto src = buf;
for (uint32_t x = 0; x < span->len; ++x, ++dst, ++cmp, ++src) {
auto tmp = ALPHA_BLEND(*src, surface->blender.alpha(*cmp));
*dst = tmp + ALPHA_BLEND(*dst, 255 - surface->blender.alpha(tmp));
}
}
else if (method == CompositeMethod::InvAlphaMask) {
for (uint32_t x = 0; x < span->len; ++x) {
auto ialpha = 255 - surface->blender.alpha(*cmp);
*tmp = ALPHA_BLEND(*src, ialpha);
dst[x] = *tmp + ALPHA_BLEND(dst[x], 255 - surface->blender.alpha(*tmp));
++tmp;
++cmp;
} else if (method == CompositeMethod::InvAlphaMask) {
for (uint32_t i = 0; i < rle->size; ++i, ++span) {
fillFetchLinear(fill, buf, span->y, span->x, 0, span->len);
auto dst = &surface->buffer[span->y * surface->stride + span->x];
auto cmp = &cbuffer[span->y * surface->stride + span->x];
auto src = buf;
for (uint32_t x = 0; x < span->len; ++x, ++dst, ++cmp, ++src) {
auto tmp = ALPHA_BLEND(*src, 255 - surface->blender.alpha(*cmp));
*dst = tmp + ALPHA_BLEND(*dst, 255 - surface->blender.alpha(tmp));
}
}
++span;
}
} else {
for (uint32_t i = 0; i < rle->size; ++i) {