50e24d7d5f
This is useful, for example, when trying to test a hardware feature that isn't supported in the current context. Bug: skia:8731 Change-Id: I9a363159300c92e4039bfd05400238c27002efb1 Reviewed-on: https://skia-review.googlesource.com/c/189133 Commit-Queue: Chris Dalton <csmartdalton@google.com> Reviewed-by: Mike Klein <mtklein@google.com>
81 lines
2.2 KiB
C++
81 lines
2.2 KiB
C++
/*
|
|
* Copyright 2013 Google Inc.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*/
|
|
|
|
#include "gm.h"
|
|
#include "sk_tool_utils.h"
|
|
|
|
#include "Resources.h"
|
|
#include "SkCanvas.h"
|
|
#include "SkOSFile.h"
|
|
|
|
namespace skiagm {
|
|
|
|
/**
|
|
* Test copying an image from 8888 to 4444.
|
|
*/
|
|
class CopyTo4444GM : public GM {
|
|
public:
|
|
CopyTo4444GM() {}
|
|
|
|
protected:
|
|
virtual SkString onShortName() {
|
|
return SkString("copyTo4444");
|
|
}
|
|
|
|
virtual SkISize onISize() {
|
|
return SkISize::Make(360, 180);
|
|
}
|
|
|
|
DrawResult onDraw(SkCanvas* canvas, SkString* errorMsg) {
|
|
SkBitmap bm, bm4444;
|
|
if (!GetResourceAsBitmap("images/dog.jpg", &bm)) {
|
|
*errorMsg = "Could not decode the file. Did you forget to set the resourcePath?";
|
|
return DrawResult::kFail;
|
|
}
|
|
canvas->drawBitmap(bm, 0, 0);
|
|
|
|
// This should dither or we will see artifacts in the background of the image.
|
|
SkAssertResult(sk_tool_utils::copy_to(&bm4444, kARGB_4444_SkColorType, bm));
|
|
canvas->drawBitmap(bm4444, SkIntToScalar(bm.width()), 0);
|
|
return DrawResult::kOk;
|
|
}
|
|
|
|
private:
|
|
typedef GM INHERITED;
|
|
};
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
DEF_GM( return new CopyTo4444GM; )
|
|
|
|
}
|
|
|
|
DEF_SIMPLE_GM(format4444, canvas, 64, 64) {
|
|
canvas->scale(16, 16);
|
|
SkBitmap bitmap;
|
|
SkImageInfo imageInfo = SkImageInfo::Make(1, 1, kARGB_4444_SkColorType, kPremul_SkAlphaType);
|
|
bitmap.allocPixels(imageInfo);
|
|
SkCanvas offscreen(bitmap);
|
|
offscreen.clear(SK_ColorRED);
|
|
canvas->drawBitmap(bitmap, 0, 0);
|
|
offscreen.clear(SK_ColorBLUE);
|
|
canvas->drawBitmap(bitmap, 1, 1);
|
|
auto pack4444 = [](unsigned a, unsigned r, unsigned g, unsigned b) -> uint16_t {
|
|
return (a << 0) | (b << 4) | (g << 8) | (r << 12);
|
|
};
|
|
uint16_t red4444 = pack4444(0xF, 0xF, 0x0, 0x0);
|
|
uint16_t blue4444 = pack4444(0xF, 0x0, 0x0, 0x0F);
|
|
SkPixmap redPixmap(imageInfo, &red4444, 2);
|
|
if (bitmap.writePixels(redPixmap, 0, 0)) {
|
|
canvas->drawBitmap(bitmap, 2, 2);
|
|
}
|
|
SkPixmap bluePixmap(imageInfo, &blue4444, 2);
|
|
if (bitmap.writePixels(bluePixmap, 0, 0)) {
|
|
canvas->drawBitmap(bitmap, 3, 3);
|
|
}
|
|
}
|