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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 "SkSpriteBlitter.h"
#include "SkArenaAlloc.h"
#include "SkSpanProcs.h"
#include "SkTemplates.h"
#include "SkXfermodePriv.h"
class Sprite_4f : public SkSpriteBlitter {
public:
Sprite_4f(const SkPixmap& src, const SkPaint& paint) : INHERITED(src) {
fMode = paint.getBlendMode();
fLoader = SkLoadSpanProc_Choose(src.info());
fFilter = SkFilterSpanProc_Choose(paint);
fBuffer.reset(src.width());
}
protected:
SkBlendMode fMode;
SkLoadSpanProc fLoader;
SkFilterSpanProc fFilter;
SkAutoTMalloc<SkPM4f> fBuffer;
private:
typedef SkSpriteBlitter INHERITED;
};
///////////////////////////////////////////////////////////////////////////////////////////////////
class Sprite_F16 : public Sprite_4f {
public:
Sprite_F16(const SkPixmap& src, const SkPaint& paint) : INHERITED(src, paint) {
uint32_t flags = 0;
if (src.isOpaque()) {
flags |= SkXfermode::kSrcIsOpaque_F16Flag;
}
fWriter = SkXfermode::GetF16Proc(fMode, flags);
}
void blitRect(int x, int y, int width, int height) override {
SkASSERT(width > 0 && height > 0);
uint64_t* SK_RESTRICT dst = fDst.writable_addr64(x, y);
size_t dstRB = fDst.rowBytes();
for (int bottom = y + height; y < bottom; ++y) {
fLoader(fSource, x - fLeft, y - fTop, fBuffer, width);
fFilter(*fPaint, fBuffer, width);
fWriter(fMode, dst, fBuffer, width, nullptr);
dst = (uint64_t* SK_RESTRICT)((char*)dst + dstRB);
}
}
private:
SkXfermode::F16Proc fWriter;
typedef Sprite_4f INHERITED;
};
SkSpriteBlitter* SkSpriteBlitter::ChooseF16(const SkPixmap& source, const SkPaint& paint,
SkArenaAlloc* allocator) {
SkASSERT(allocator != nullptr);
if (paint.getMaskFilter() != nullptr) {
return nullptr;
}
switch (source.colorType()) {
case kN32_SkColorType:
case kRGBA_F16_SkColorType:
return allocator->make<Sprite_F16>(source, paint);
default:
return nullptr;
}
}
///////////////////////////////////////////////////////////////////////////////////////////////////
class Sprite_sRGB : public Sprite_4f {
public:
Sprite_sRGB(const SkPixmap& src, const SkPaint& paint) : INHERITED(src, paint) {
uint32_t flags = SkXfermode::kDstIsSRGB_D32Flag;
if (src.isOpaque()) {
flags |= SkXfermode::kSrcIsOpaque_D32Flag;
}
fWriter = SkXfermode::GetD32Proc(fMode, flags);
}
void blitRect(int x, int y, int width, int height) override {
SkASSERT(width > 0 && height > 0);
uint32_t* SK_RESTRICT dst = fDst.writable_addr32(x, y);
size_t dstRB = fDst.rowBytes();
for (int bottom = y + height; y < bottom; ++y) {
fLoader(fSource, x - fLeft, y - fTop, fBuffer, width);
fFilter(*fPaint, fBuffer, width);
fWriter(fMode, dst, fBuffer, width, nullptr);
dst = (uint32_t* SK_RESTRICT)((char*)dst + dstRB);
}
}
protected:
SkXfermode::D32Proc fWriter;
private:
typedef Sprite_4f INHERITED;
};
SkSpriteBlitter* SkSpriteBlitter::ChooseS32(const SkPixmap& source, const SkPaint& paint,
SkArenaAlloc* allocator) {
SkASSERT(allocator != nullptr);
if (paint.getMaskFilter() != nullptr) {
return nullptr;
}
switch (source.colorType()) {
case kN32_SkColorType:
case kRGBA_F16_SkColorType:
return allocator->make<Sprite_sRGB>(source, paint);
default:
return nullptr;
}
}
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