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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrBitmapTextureMaker.h"
#include "GrContext.h"
#include "GrGpuResourcePriv.h"
#include "SkBitmap.h"
#include "SkGrPriv.h"
#include "SkPixelRef.h"
static bool bmp_is_alpha_only(const SkBitmap& bm) { return kAlpha_8_SkColorType == bm.colorType(); }
GrBitmapTextureMaker::GrBitmapTextureMaker(GrContext* context, const SkBitmap& bitmap)
: INHERITED(context, bitmap.width(), bitmap.height(), bmp_is_alpha_only(bitmap))
, fBitmap(bitmap) {
if (!bitmap.isVolatile()) {
SkIPoint origin = bitmap.pixelRefOrigin();
SkIRect subset = SkIRect::MakeXYWH(origin.fX, origin.fY, bitmap.width(),
bitmap.height());
GrMakeKeyFromImageID(&fOriginalKey, bitmap.pixelRef()->getGenerationID(), subset);
}
}
GrTexture* GrBitmapTextureMaker::refOriginalTexture(bool willBeMipped,
SkColorSpace* dstColorSpace) {
GrTexture* tex = nullptr;
if (fOriginalKey.isValid()) {
tex = this->context()->textureProvider()->findAndRefTextureByUniqueKey(fOriginalKey);
if (tex) {
return tex;
}
}
if (willBeMipped) {
tex = GrGenerateMipMapsAndUploadToTexture(this->context(), fBitmap, dstColorSpace);
}
if (!tex) {
tex = GrUploadBitmapToTexture(this->context(), fBitmap);
}
if (tex && fOriginalKey.isValid()) {
tex->resourcePriv().setUniqueKey(fOriginalKey);
GrInstallBitmapUniqueKeyInvalidator(fOriginalKey, fBitmap.pixelRef());
}
return tex;
}
void GrBitmapTextureMaker::makeCopyKey(const CopyParams& copyParams, GrUniqueKey* copyKey,
SkColorSpace* dstColorSpace) {
// Destination color space is irrelevant - we always upload the bitmap's contents as-is
if (fOriginalKey.isValid()) {
MakeCopyKeyFromOrigKey(fOriginalKey, copyParams, copyKey);
}
}
void GrBitmapTextureMaker::didCacheCopy(const GrUniqueKey& copyKey) {
GrInstallBitmapUniqueKeyInvalidator(copyKey, fBitmap.pixelRef());
}
SkAlphaType GrBitmapTextureMaker::alphaType() const {
return fBitmap.alphaType();
}
sk_sp<SkColorSpace> GrBitmapTextureMaker::getColorSpace(SkColorSpace* dstColorSpace) {
// Color space doesn't depend on destination color space - it's just whatever is in the bitmap
return fBitmap.refColorSpace();
}
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