23 lines
		
	
	
		
			1000 B
		
	
	
	
		
			C++
		
	
	
	
			
		
		
	
	
			23 lines
		
	
	
		
			1000 B
		
	
	
	
		
			C++
		
	
	
	
| // Copyright 2019 Google LLC.
 | |
| // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
 | |
| #include "tools/fiddle/examples.h"
 | |
| // HASH=809284db136748208b3efc31cd89de29
 | |
| REG_FIDDLE(Pixmap_writable_addr8, 256, 64, false, 0) {
 | |
| void draw(SkCanvas* canvas) {
 | |
|     uint8_t storage[][5] = {{ 0,   0,  64,   0,  0},
 | |
|                             { 0, 128, 255, 128,  0},
 | |
|                             {64, 255, 255, 255, 64},
 | |
|                             { 0, 128, 255, 128,  0},
 | |
|                             { 0,   0,  64,   0,  0}};
 | |
|     SkImageInfo imageInfo = SkImageInfo::Make(5, 5, kGray_8_SkColorType, kPremul_SkAlphaType);
 | |
|     SkPixmap pixmap(imageInfo, storage[0], 5);
 | |
|     SkBitmap bitmap;
 | |
|     bitmap.installPixels(pixmap);
 | |
|     canvas->scale(10, 10);
 | |
|     canvas->drawImage(bitmap.asImage(), 0, 0);
 | |
|     *pixmap.writable_addr8(2, 2) = 0;
 | |
| //  bitmap.installPixels(pixmap);      // uncomment to fix on GPU
 | |
|     canvas->drawImage(bitmap.asImage(), 10, 0);
 | |
| }
 | |
| }  // END FIDDLE
 |