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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrImageIDTextureAdjuster.h"
#include "GrContext.h"
#include "GrGpuResourcePriv.h"
#include "SkBitmap.h"
#include "SkGrPriv.h"
#include "SkImage_Base.h"
#include "SkImageCacherator.h"
#include "SkPixelRef.h"
static bool bmp_is_alpha_only(const SkBitmap& bm) { return kAlpha_8_SkColorType == bm.colorType(); }
GrBitmapTextureAdjuster::GrBitmapTextureAdjuster(const SkBitmap* bmp)
: INHERITED(bmp->getTexture(),
SkIRect::MakeWH(bmp->width(), bmp->height()),
bmp_is_alpha_only(*bmp))
, fBmp(bmp) {}
void GrBitmapTextureAdjuster::makeCopyKey(const CopyParams& params, GrUniqueKey* copyKey) {
if (fBmp->isVolatile()) {
return;
}
// The content area must represent the whole bitmap. Texture-backed bitmaps don't support
// extractSubset(). Therefore, either the bitmap and the texture are the same size or the
// content's dimensions are the bitmap's dimensions which is pinned to the upper left
// of the texture.
GrUniqueKey baseKey;
GrMakeKeyFromImageID(&baseKey, fBmp->getGenerationID(),
SkIRect::MakeWH(fBmp->width(), fBmp->height()));
MakeCopyKeyFromOrigKey(baseKey, params, copyKey);
}
void GrBitmapTextureAdjuster::didCacheCopy(const GrUniqueKey& copyKey) {
GrInstallBitmapUniqueKeyInvalidator(copyKey, fBmp->pixelRef());
}
//////////////////////////////////////////////////////////////////////////////
// SkImage's don't have a way of communicating whether they're alpha-only. So we fallback to
// inspecting the texture.
static bool tex_image_is_alpha_only(const SkImage_Base& img) {
return GrPixelConfigIsAlphaOnly(img.peekTexture()->config());
}
GrImageTextureAdjuster::GrImageTextureAdjuster(const SkImage_Base* img)
: INHERITED(img->peekTexture(), SkIRect::MakeWH(img->width(), img->height()),
tex_image_is_alpha_only(*img))
, fImageBase(img) {}
void GrImageTextureAdjuster::makeCopyKey(const CopyParams& params, GrUniqueKey* copyKey) {
// By construction this texture adjuster always represents an entire SkImage, so use the
// image's width and height for the key's rectangle.
GrUniqueKey baseKey;
GrMakeKeyFromImageID(&baseKey, fImageBase->uniqueID(),
SkIRect::MakeWH(fImageBase->width(), fImageBase->height()));
MakeCopyKeyFromOrigKey(baseKey, params, copyKey);
}
void GrImageTextureAdjuster::didCacheCopy(const GrUniqueKey& copyKey) {
// We don't currently have a mechanism for notifications on Images!
}
//////////////////////////////////////////////////////////////////////////////
GrBitmapTextureMaker::GrBitmapTextureMaker(GrContext* context, const SkBitmap& bitmap)
: INHERITED(context, bitmap.width(), bitmap.height(), bmp_is_alpha_only(bitmap))
, fBitmap(bitmap) {
SkASSERT(!bitmap.getTexture());
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) {
GrTexture* tex;
if (fOriginalKey.isValid()) {
tex = this->context()->textureProvider()->findAndRefTextureByUniqueKey(fOriginalKey);
if (tex) {
return tex;
}
}
if (willBeMipped) {
tex = GrGenerateMipMapsAndUploadToTexture(this->context(), fBitmap);
}
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) {
if (fOriginalKey.isValid()) {
MakeCopyKeyFromOrigKey(fOriginalKey, copyParams, copyKey);
}
}
void GrBitmapTextureMaker::didCacheCopy(const GrUniqueKey& copyKey) {
GrInstallBitmapUniqueKeyInvalidator(copyKey, fBitmap.pixelRef());
}
//////////////////////////////////////////////////////////////////////////////
static bool cacher_is_alpha_only(const SkImageCacherator& cacher) {
return kAlpha_8_SkColorType == cacher.info().colorType();
}
GrImageTextureMaker::GrImageTextureMaker(GrContext* context, SkImageCacherator* cacher,
const SkImage* client, SkImage::CachingHint chint)
: INHERITED(context, cacher->info().width(), cacher->info().height(),
cacher_is_alpha_only(*cacher))
, fCacher(cacher)
, fClient(client)
, fCachingHint(chint) {
if (client) {
GrMakeKeyFromImageID(&fOriginalKey, client->uniqueID(),
SkIRect::MakeWH(this->width(), this->height()));
}
}
GrTexture* GrImageTextureMaker::refOriginalTexture(bool willBeMipped) {
return fCacher->lockTexture(this->context(), fOriginalKey, fClient, fCachingHint, willBeMipped);
}
void GrImageTextureMaker::makeCopyKey(const CopyParams& stretch, GrUniqueKey* paramsCopyKey) {
if (fOriginalKey.isValid() && SkImage::kAllow_CachingHint == fCachingHint) {
MakeCopyKeyFromOrigKey(fOriginalKey, stretch, paramsCopyKey);
}
}
void GrImageTextureMaker::didCacheCopy(const GrUniqueKey& copyKey) {
if (fClient) {
as_IB(fClient)->notifyAddedToCache();
}
}
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