skia2/docs/examples/Pixmap_writable_addr8.cpp
Mike Klein c0bd9f9fe5 rewrite includes to not need so much -Ifoo
Current strategy: everything from the top

Things to look at first are the manual changes:

   - added tools/rewrite_includes.py
   - removed -Idirectives from BUILD.gn
   - various compile.sh simplifications
   - tweak tools/embed_resources.py
   - update gn/find_headers.py to write paths from the top
   - update gn/gn_to_bp.py SkUserConfig.h layout
     so that #include "include/config/SkUserConfig.h" always
     gets the header we want.

No-Presubmit: true
Change-Id: I73a4b181654e0e38d229bc456c0d0854bae3363e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209706
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
2019-04-24 16:27:11 +00:00

23 lines
982 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->drawBitmap(bitmap, 0, 0);
*pixmap.writable_addr8(2, 2) = 0;
// bitmap.installPixels(pixmap); // uncomment to fix on GPU
canvas->drawBitmap(bitmap, 10, 0);
}
} // END FIDDLE