| /* |
| * Copyright 2006 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 "SkCoreBlitters.h" |
| #include "SkColorPriv.h" |
| #include "SkShader.h" |
| #include "SkXfermodePriv.h" |
| |
| SkA8_Coverage_Blitter::SkA8_Coverage_Blitter(const SkPixmap& device, |
| const SkPaint& paint) : SkRasterBlitter(device) { |
| SkASSERT(nullptr == paint.getShader()); |
| SkASSERT(paint.isSrcOver()); |
| SkASSERT(nullptr == paint.getColorFilter()); |
| } |
| |
| void SkA8_Coverage_Blitter::blitAntiH(int x, int y, const SkAlpha antialias[], |
| const int16_t runs[]) { |
| uint8_t* device = fDevice.writable_addr8(x, y); |
| SkDEBUGCODE(int totalCount = 0;) |
| |
| for (;;) { |
| int count = runs[0]; |
| SkASSERT(count >= 0); |
| if (count == 0) { |
| return; |
| } |
| if (antialias[0]) { |
| memset(device, antialias[0], count); |
| } |
| runs += count; |
| antialias += count; |
| device += count; |
| |
| SkDEBUGCODE(totalCount += count;) |
| } |
| SkASSERT(fDevice.width() == totalCount); |
| } |
| |
| void SkA8_Coverage_Blitter::blitH(int x, int y, int width) { |
| memset(fDevice.writable_addr8(x, y), 0xFF, width); |
| } |
| |
| void SkA8_Coverage_Blitter::blitV(int x, int y, int height, SkAlpha alpha) { |
| if (0 == alpha) { |
| return; |
| } |
| |
| uint8_t* dst = fDevice.writable_addr8(x, y); |
| const size_t dstRB = fDevice.rowBytes(); |
| while (--height >= 0) { |
| *dst = alpha; |
| dst += dstRB; |
| } |
| } |
| |
| void SkA8_Coverage_Blitter::blitRect(int x, int y, int width, int height) { |
| uint8_t* dst = fDevice.writable_addr8(x, y); |
| const size_t dstRB = fDevice.rowBytes(); |
| while (--height >= 0) { |
| memset(dst, 0xFF, width); |
| dst += dstRB; |
| } |
| } |
| |
| void SkA8_Coverage_Blitter::blitMask(const SkMask& mask, const SkIRect& clip) { |
| SkASSERT(SkMask::kA8_Format == mask.fFormat); |
| |
| int x = clip.fLeft; |
| int y = clip.fTop; |
| int width = clip.width(); |
| int height = clip.height(); |
| |
| uint8_t* dst = fDevice.writable_addr8(x, y); |
| const uint8_t* src = mask.getAddr8(x, y); |
| const size_t srcRB = mask.fRowBytes; |
| const size_t dstRB = fDevice.rowBytes(); |
| |
| while (--height >= 0) { |
| memcpy(dst, src, width); |
| dst += dstRB; |
| src += srcRB; |
| } |
| } |
| |
| const SkPixmap* SkA8_Coverage_Blitter::justAnOpaqueColor(uint32_t*) { |
| return nullptr; |
| } |