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- /*
- * 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 "include/core/SkShader.h"
- #include "include/private/SkColorData.h"
- #include "src/core/SkCoreBlitters.h"
- #include "src/core/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) {
- if (SkMask::kA8_Format != mask.fFormat) {
- this->INHERITED::blitMask(mask, clip);
- return;
- }
- 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;
- }
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