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/*
* Copyright 2013 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkMatrix.h"
#if SK_SUPPORT_GPU
#include "GrTexture.h"
#include "SkImageFilterUtils.h"
#include "SkBitmap.h"
#include "SkGrPixelRef.h"
#include "SkGr.h"
bool SkImageFilterUtils::WrapTexture(GrTexture* texture, int width, int height, SkBitmap* result) {
SkImageInfo info = {
width,
height,
kPMColor_SkColorType,
kPremul_SkAlphaType,
};
result->setConfig(info);
result->setPixelRef(SkNEW_ARGS(SkGrPixelRef, (info, texture)))->unref();
return true;
}
bool SkImageFilterUtils::GetInputResultGPU(SkImageFilter* filter, SkImageFilter::Proxy* proxy,
const SkBitmap& src, const SkMatrix& ctm,
SkBitmap* result, SkIPoint* offset) {
// 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();
GrContext::AutoWideOpenIdentityDraw awoid(context, NULL);
if (!filter) {
offset->fX = offset->fY = 0;
*result = src;
return true;
} else if (filter->canFilterImageGPU()) {
return filter->filterImageGPU(proxy, src, ctm, result, offset);
} else {
if (filter->filterImage(proxy, src, ctm, result, offset)) {
if (!result->getTexture()) {
SkImageInfo info;
if (!result->asImageInfo(&info)) {
return false;
}
GrTexture* resultTex = GrLockAndRefCachedBitmapTexture(context, *result, NULL);
result->setPixelRef(new SkGrPixelRef(info, resultTex))->unref();
GrUnlockAndUnrefCachedBitmapTexture(resultTex);
}
return true;
} else {
return false;
}
}
}
#endif
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