skia2/docs/examples/Pixmap_writable_addrF16.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

26 lines
1.0 KiB
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=7822d78f5cacf5c04267cbbc6c6d0b80
REG_FIDDLE(Pixmap_writable_addrF16, 256, 64, false, 0) {
void draw(SkCanvas* canvas) {
SkImageInfo info = SkImageInfo::Make(1, 2, kRGBA_F16_SkColorType, kPremul_SkAlphaType);
uint16_t storage[2][4];
SkPixmap pixmap(info, storage[0], sizeof(uint64_t));
SkIRect topPixelBounds = {0, 0, 1, 1};
pixmap.erase({ 0.65f, 0.45f, 0.25f, 1 }, &topPixelBounds);
SkIRect bottomPixelBounds = {0, 1, 1, 2};
pixmap.erase({ 0.25f, 0.65f, 0.45f, 1 }, &bottomPixelBounds);
SkBitmap bitmap;
canvas->scale(20, 20);
bitmap.installPixels(pixmap);
canvas->drawBitmap(bitmap, 0, 0);
uint16_t* pixel2 = pixmap.writable_addrF16(0, 1);
for (int i = 0; i < 4; ++i) {
pixel2[i] = storage[0][i];
}
bitmap.installPixels(pixmap);
canvas->drawBitmap(bitmap, 4, 0);
}
} // END FIDDLE