1/*
2 * Copyright 2006 The Android Open Source Project
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#include "include/core/SkShader.h"
9#include "include/private/SkColorData.h"
10#include "src/core/SkCoreBlitters.h"
11#include "src/core/SkXfermodePriv.h"
12
13SkA8_Coverage_Blitter::SkA8_Coverage_Blitter(const SkPixmap& device,
14 const SkPaint& paint) : SkRasterBlitter(device) {
15 SkASSERT(nullptr == paint.getShader());
16 SkASSERT(paint.isSrcOver());
17 SkASSERT(nullptr == paint.getColorFilter());
18}
19
20void SkA8_Coverage_Blitter::blitAntiH(int x, int y, const SkAlpha antialias[],
21 const int16_t runs[]) {
22 uint8_t* device = fDevice.writable_addr8(x, y);
23 SkDEBUGCODE(int totalCount = 0;)
24
25 for (;;) {
26 int count = runs[0];
27 SkASSERT(count >= 0);
28 if (count == 0) {
29 return;
30 }
31 if (antialias[0]) {
32 memset(device, antialias[0], count);
33 }
34 runs += count;
35 antialias += count;
36 device += count;
37
38 SkDEBUGCODE(totalCount += count;)
39 }
40 SkASSERT(fDevice.width() == totalCount);
41}
42
43void SkA8_Coverage_Blitter::blitH(int x, int y, int width) {
44 memset(fDevice.writable_addr8(x, y), 0xFF, width);
45}
46
47void SkA8_Coverage_Blitter::blitV(int x, int y, int height, SkAlpha alpha) {
48 if (0 == alpha) {
49 return;
50 }
51
52 uint8_t* dst = fDevice.writable_addr8(x, y);
53 const size_t dstRB = fDevice.rowBytes();
54 while (--height >= 0) {
55 *dst = alpha;
56 dst += dstRB;
57 }
58}
59
60void SkA8_Coverage_Blitter::blitRect(int x, int y, int width, int height) {
61 uint8_t* dst = fDevice.writable_addr8(x, y);
62 const size_t dstRB = fDevice.rowBytes();
63 while (--height >= 0) {
64 memset(dst, 0xFF, width);
65 dst += dstRB;
66 }
67}
68
69void SkA8_Coverage_Blitter::blitMask(const SkMask& mask, const SkIRect& clip) {
70 if (SkMask::kA8_Format != mask.fFormat) {
71 this->INHERITED::blitMask(mask, clip);
72 return;
73 }
74
75 int x = clip.fLeft;
76 int y = clip.fTop;
77 int width = clip.width();
78 int height = clip.height();
79
80 uint8_t* dst = fDevice.writable_addr8(x, y);
81 const uint8_t* src = mask.getAddr8(x, y);
82 const size_t srcRB = mask.fRowBytes;
83 const size_t dstRB = fDevice.rowBytes();
84
85 while (--height >= 0) {
86 memcpy(dst, src, width);
87 dst += dstRB;
88 src += srcRB;
89 }
90}
91
92const SkPixmap* SkA8_Coverage_Blitter::justAnOpaqueColor(uint32_t*) {
93 return nullptr;
94}
95