static void apply_morphology_pass(GrDrawContext* drawContext,
const GrClip& clip,
GrTexture* texture,
const SkIRect& srcRect,
const SkIRect& dstRect,
int radius,
GrMorphologyEffect::MorphologyType morphType,
Gr1DKernelEffect::Direction direction) {
float bounds[2] = { 0.0f, 1.0f };
SkIRect lowerSrcRect = srcRect, lowerDstRect = dstRect;
SkIRect middleSrcRect = srcRect, middleDstRect = dstRect;
SkIRect upperSrcRect = srcRect, upperDstRect = dstRect;
if (direction == Gr1DKernelEffect::kX_Direction) {
bounds[0] = (SkIntToScalar(srcRect.left()) + 0.5f) / texture->width();
bounds[1] = (SkIntToScalar(srcRect.right()) - 0.5f) / texture->width();
lowerSrcRect.fRight = srcRect.left() + radius;
lowerDstRect.fRight = dstRect.left() + radius;
upperSrcRect.fLeft = srcRect.right() - radius;
upperDstRect.fLeft = dstRect.right() - radius;
middleSrcRect.inset(radius, 0);
middleDstRect.inset(radius, 0);
} else {
bounds[0] = (SkIntToScalar(srcRect.top()) + 0.5f) / texture->height();
bounds[1] = (SkIntToScalar(srcRect.bottom()) - 0.5f) / texture->height();
lowerSrcRect.fBottom = srcRect.top() + radius;
lowerDstRect.fBottom = dstRect.top() + radius;
upperSrcRect.fTop = srcRect.bottom() - radius;
upperDstRect.fTop = dstRect.bottom() - radius;
middleSrcRect.inset(0, radius);
middleDstRect.inset(0, radius);
}
if (middleSrcRect.fLeft - middleSrcRect.fRight >= 0) {
// radius covers srcRect; use bounds over entire draw
apply_morphology_rect(drawContext, clip, texture, srcRect, dstRect, radius,
morphType, bounds, direction);
} else {
// Draw upper and lower margins with bounds; middle without.
apply_morphology_rect(drawContext, clip, texture, lowerSrcRect, lowerDstRect, radius,
morphType, bounds, direction);
apply_morphology_rect(drawContext, clip, texture, upperSrcRect, upperDstRect, radius,
morphType, bounds, direction);
apply_morphology_rect_no_bounds(drawContext, clip, texture, middleSrcRect, middleDstRect,
radius, morphType, direction);
}
}
static void apply_morphology_pass(GrRenderTargetContext* renderTargetContext,
const GrClip& clip,
sk_sp<GrTextureProxy> textureProxy,
const SkIRect& srcRect,
const SkIRect& dstRect,
int radius,
GrMorphologyEffect::Type morphType,
GrMorphologyEffect::Direction direction) {
float bounds[2] = { 0.0f, 1.0f };
SkIRect lowerSrcRect = srcRect, lowerDstRect = dstRect;
SkIRect middleSrcRect = srcRect, middleDstRect = dstRect;
SkIRect upperSrcRect = srcRect, upperDstRect = dstRect;
if (direction == GrMorphologyEffect::Direction::kX) {
bounds[0] = SkIntToScalar(srcRect.left()) + 0.5f;
bounds[1] = SkIntToScalar(srcRect.right()) - 0.5f;
lowerSrcRect.fRight = srcRect.left() + radius;
lowerDstRect.fRight = dstRect.left() + radius;
upperSrcRect.fLeft = srcRect.right() - radius;
upperDstRect.fLeft = dstRect.right() - radius;
middleSrcRect.inset(radius, 0);
middleDstRect.inset(radius, 0);
} else {
bounds[0] = SkIntToScalar(srcRect.top()) + 0.5f;
bounds[1] = SkIntToScalar(srcRect.bottom()) - 0.5f;
lowerSrcRect.fBottom = srcRect.top() + radius;
lowerDstRect.fBottom = dstRect.top() + radius;
upperSrcRect.fTop = srcRect.bottom() - radius;
upperDstRect.fTop = dstRect.bottom() - radius;
middleSrcRect.inset(0, radius);
middleDstRect.inset(0, radius);
}
if (middleSrcRect.width() <= 0) {
// radius covers srcRect; use bounds over entire draw
apply_morphology_rect(renderTargetContext, clip, std::move(textureProxy),
srcRect, dstRect, radius, morphType, bounds, direction);
} else {
// Draw upper and lower margins with bounds; middle without.
apply_morphology_rect(renderTargetContext, clip, textureProxy,
lowerSrcRect, lowerDstRect, radius, morphType, bounds, direction);
apply_morphology_rect(renderTargetContext, clip, textureProxy,
upperSrcRect, upperDstRect, radius, morphType, bounds, direction);
apply_morphology_rect_no_bounds(renderTargetContext, clip, std::move(textureProxy),
middleSrcRect, middleDstRect, radius, morphType, direction);
}
}
