bool SkImageFilter::filterInputGPU(int index, SkImageFilter::Proxy* proxy,
const SkBitmap& src, const Context& ctx,
SkBitmap* result, SkIPoint* offset) const {
SkImageFilter* input = this->getInput(index);
if (!input) {
return true;
}
// Ensure that GrContext calls under filterImage and filterImageGPU below will see an identity
// matrix with no clip and that the matrix, clip, and render target set before this function was
// called are restored before we return to the caller.
GrContext* context = src.getTexture()->getContext();
if (input->filterImage(proxy, src, this->mapContext(ctx), result, offset)) {
if (!result->getTexture()) {
const SkImageInfo info = result->info();
if (kUnknown_SkColorType == info.colorType()) {
return false;
}
SkAutoTUnref<GrTexture> resultTex(
GrRefCachedBitmapTexture(context, *result, GrTextureParams::ClampNoFilter()));
if (!resultTex) {
return false;
}
result->setPixelRef(new SkGrPixelRef(info, resultTex))->unref();
}
return true;
} else {
return false;
}
}
sk_sp<SkSpecialImage> SkSpecialImage::makeTextureImage(GrContext* context) {
#if SK_SUPPORT_GPU
if (!context) {
return nullptr;
}
if (GrTexture* peek = as_SIB(this)->onPeekTexture()) {
return peek->getContext() == context ? sk_sp<SkSpecialImage>(SkRef(this)) : nullptr;
}
SkBitmap bmp;
if (!this->internal_getBM(&bmp)) {
return nullptr;
}
if (bmp.empty()) {
return SkSpecialImage::MakeFromRaster(SkIRect::MakeEmpty(), bmp, &this->props());
}
SkAutoTUnref<GrTexture> resultTex(
GrRefCachedBitmapTexture(context, bmp, GrTextureParams::ClampNoFilter()));
if (!resultTex) {
return nullptr;
}
SkAlphaType at = this->isOpaque() ? kOpaque_SkAlphaType : kPremul_SkAlphaType;
return SkSpecialImage::MakeFromGpu(SkIRect::MakeWH(resultTex->width(), resultTex->height()),
this->uniqueID(),
resultTex, &this->props(), at);
#else
return nullptr;
#endif
}
bool SkImageFilter::filterImageGPU(Proxy* proxy, const SkBitmap& src, const SkMatrix& ctm,
SkBitmap* result, SkIPoint* offset) {
#if SK_SUPPORT_GPU
SkBitmap input;
SkASSERT(fInputCount == 1);
if (!SkImageFilterUtils::GetInputResultGPU(this->getInput(0), proxy, src, ctm, &input, offset)) {
return false;
}
GrTexture* srcTexture = input.getTexture();
SkIRect bounds;
src.getBounds(&bounds);
if (!this->applyCropRect(&bounds, ctm)) {
return false;
}
SkRect srcRect = SkRect::Make(bounds);
SkRect dstRect = SkRect::MakeWH(srcRect.width(), srcRect.height());
GrContext* context = srcTexture->getContext();
GrTextureDesc desc;
desc.fFlags = kRenderTarget_GrTextureFlagBit,
desc.fWidth = bounds.width();
desc.fHeight = bounds.height();
desc.fConfig = kRGBA_8888_GrPixelConfig;
GrAutoScratchTexture dst(context, desc);
GrContext::AutoMatrix am;
am.setIdentity(context);
GrContext::AutoRenderTarget art(context, dst.texture()->asRenderTarget());
GrContext::AutoClip acs(context, dstRect);
GrEffectRef* effect;
SkMatrix matrix(ctm);
matrix.postTranslate(SkIntToScalar(-bounds.left()), SkIntToScalar(-bounds.top()));
this->asNewEffect(&effect, srcTexture, matrix, bounds);
SkASSERT(effect);
SkAutoUnref effectRef(effect);
GrPaint paint;
paint.addColorEffect(effect);
context->drawRectToRect(paint, dstRect, srcRect);
SkAutoTUnref<GrTexture> resultTex(dst.detach());
SkImageFilterUtils::WrapTexture(resultTex, bounds.width(), bounds.height(), result);
offset->fX += bounds.left();
offset->fY += bounds.top();
return true;
#else
return false;
#endif
}
sk_sp<SkSpecialImage> SkSpecialImage::makeTextureImage(GrContext* context) {
#if SK_SUPPORT_GPU
if (!context) {
return nullptr;
}
if (GrTexture* peek = as_SIB(this)->onPeekTexture()) {
return peek->getContext() == context ? sk_sp<SkSpecialImage>(SkRef(this)) : nullptr;
}
SkBitmap bmp;
// At this point, we are definitely not texture-backed, so we must be raster or generator
// backed. If we remove the special-wrapping-an-image subclass, we may be able to assert that
// we are strictly raster-backed (i.e. generator images become raster when they are specialized)
// in which case getROPixels could turn into peekPixels...
if (!this->getROPixels(&bmp)) {
return nullptr;
}
if (bmp.empty()) {
return SkSpecialImage::MakeFromRaster(SkIRect::MakeEmpty(), bmp, &this->props());
}
sk_sp<GrTexture> resultTex(GrRefCachedBitmapTexture(context,
bmp,
GrTextureParams::ClampNoFilter(),
SkSourceGammaTreatment::kRespect));
if (!resultTex) {
return nullptr;
}
SkAlphaType at = this->isOpaque() ? kOpaque_SkAlphaType : kPremul_SkAlphaType;
return SkSpecialImage::MakeFromGpu(SkIRect::MakeWH(resultTex->width(), resultTex->height()),
this->uniqueID(),
resultTex, sk_ref_sp(this->getColorSpace()), &this->props(),
at);
#else
return nullptr;
#endif
}
bool SkImageFilter::filterImageGPU(Proxy* proxy, const SkBitmap& src, SkBitmap* result) {
#if SK_SUPPORT_GPU
SkBitmap input;
SkASSERT(fInputCount == 1);
if (!SkImageFilterUtils::GetInputResultGPU(this->getInput(0), proxy, src, &input)) {
return false;
}
GrTexture* srcTexture = (GrTexture*) input.getTexture();
SkRect rect;
src.getBounds(&rect);
GrContext* context = srcTexture->getContext();
GrTextureDesc desc;
desc.fFlags = kRenderTarget_GrTextureFlagBit,
desc.fWidth = input.width();
desc.fHeight = input.height();
desc.fConfig = kRGBA_8888_GrPixelConfig;
GrAutoScratchTexture dst(context, desc);
GrContext::AutoMatrix am;
am.setIdentity(context);
GrContext::AutoRenderTarget art(context, dst.texture()->asRenderTarget());
GrContext::AutoClip acs(context, rect);
GrEffectRef* effect;
this->asNewEffect(&effect, srcTexture);
SkASSERT(effect);
SkAutoUnref effectRef(effect);
GrPaint paint;
paint.colorStage(0)->setEffect(effect);
context->drawRect(paint, rect);
SkAutoTUnref<GrTexture> resultTex(dst.detach());
SkImageFilterUtils::WrapTexture(resultTex, input.width(), input.height(), result);
return true;
#else
return false;
#endif
}
bool SkImageFilter::applyCropRect(const Context& ctx, Proxy* proxy, const SkBitmap& src,
SkIPoint* srcOffset, SkIRect* bounds, SkBitmap* dst) const {
SkIRect srcBounds;
src.getBounds(&srcBounds);
srcBounds.offset(*srcOffset);
#ifdef SK_SUPPORT_SRC_BOUNDS_BLOAT_FOR_IMAGEFILTERS
if (!fCropRect.applyTo(srcBounds, ctx, bounds)) {
#else
SkIRect dstBounds;
this->onFilterNodeBounds(srcBounds, ctx.ctm(), &dstBounds, kForward_MapDirection);
if (!fCropRect.applyTo(dstBounds, ctx, bounds)) {
#endif
return false;
}
if (srcBounds.contains(*bounds)) {
*dst = src;
return true;
} else {
SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(bounds->width(), bounds->height()));
if (!device) {
return false;
}
SkCanvas canvas(device);
canvas.clear(0x00000000);
canvas.drawBitmap(src, srcOffset->x() - bounds->x(), srcOffset->y() - bounds->y());
*srcOffset = SkIPoint::Make(bounds->x(), bounds->y());
*dst = device->accessBitmap(false);
return true;
}
}
bool SkImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& ctm,
SkIRect* dst) const {
if (fInputCount < 1) {
*dst = src;
return true;
}
SkIRect bounds, totalBounds;
this->onFilterNodeBounds(src, ctm, &bounds, kReverse_MapDirection);
for (int i = 0; i < fInputCount; ++i) {
SkImageFilter* filter = this->getInput(i);
SkIRect rect = bounds;
if (filter && !filter->filterBounds(bounds, ctm, &rect)) {
return false;
}
if (0 == i) {
totalBounds = rect;
} else {
totalBounds.join(rect);
}
}
// don't modify dst until now, so we don't accidentally change it in the
// loop, but then return false on the next filter.
*dst = totalBounds;
return true;
}
void SkImageFilter::onFilterNodeBounds(const SkIRect& src, const SkMatrix&,
SkIRect* dst, MapDirection) const {
*dst = src;
}
SkImageFilter::Context SkImageFilter::mapContext(const Context& ctx) const {
#ifdef SK_SUPPORT_SRC_BOUNDS_BLOAT_FOR_IMAGEFILTERS
return ctx;
#else
SkIRect clipBounds;
this->onFilterNodeBounds(ctx.clipBounds(), ctx.ctm(), &clipBounds,
MapDirection::kReverse_MapDirection);
return Context(ctx.ctm(), clipBounds, ctx.cache());
#endif
}
bool SkImageFilter::asFragmentProcessor(GrFragmentProcessor**, GrTexture*,
const SkMatrix&, const SkIRect&) const {
return false;
}
SkImageFilter* SkImageFilter::CreateMatrixFilter(const SkMatrix& matrix,
SkFilterQuality filterQuality,
SkImageFilter* input) {
return SkMatrixImageFilter::Create(matrix, filterQuality, input);
}
SkImageFilter* SkImageFilter::newWithLocalMatrix(const SkMatrix& matrix) const {
// SkLocalMatrixImageFilter takes SkImage* in its factory, but logically that parameter
// is *always* treated as a const ptr. Hence the const-cast here.
//
return SkLocalMatrixImageFilter::Create(matrix, const_cast<SkImageFilter*>(this));
}
#if SK_SUPPORT_GPU
bool SkImageFilter::filterInputGPU(int index, SkImageFilter::Proxy* proxy,
const SkBitmap& src, const Context& ctx,
SkBitmap* result, SkIPoint* offset) const {
SkImageFilter* input = this->getInput(index);
if (!input) {
return true;
}
// Ensure that GrContext calls under filterImage and filterImageGPU below will see an identity
// matrix with no clip and that the matrix, clip, and render target set before this function was
// called are restored before we return to the caller.
GrContext* context = src.getTexture()->getContext();
if (input->filterImage(proxy, src, this->mapContext(ctx), result, offset)) {
if (!result->getTexture()) {
const SkImageInfo info = result->info();
if (kUnknown_SkColorType == info.colorType()) {
return false;
}
SkAutoTUnref<GrTexture> resultTex(
GrRefCachedBitmapTexture(context, *result, GrTextureParams::ClampNoFilter()));
if (!resultTex) {
return false;
}
result->setPixelRef(new SkGrPixelRef(info, resultTex))->unref();
}
return true;
} else {
return false;
}
}
