skia2/samplecode/SampleTextureDomain.cpp

113 lines
3.8 KiB
C++
Raw Normal View History

Automatic update of all copyright notices to reflect new license terms. I have manually examined all of these diffs and restored a few files that seem to require manual adjustment. The following files still need to be modified manually, in a separate CL: android_sample/SampleApp/AndroidManifest.xml android_sample/SampleApp/res/layout/layout.xml android_sample/SampleApp/res/menu/sample.xml android_sample/SampleApp/res/values/strings.xml android_sample/SampleApp/src/com/skia/sampleapp/SampleApp.java android_sample/SampleApp/src/com/skia/sampleapp/SampleView.java experimental/CiCarbonSampleMain.c experimental/CocoaDebugger/main.m experimental/FileReaderApp/main.m experimental/SimpleCocoaApp/main.m experimental/iOSSampleApp/Shared/SkAlertPrompt.h experimental/iOSSampleApp/Shared/SkAlertPrompt.m experimental/iOSSampleApp/SkiOSSampleApp-Base.xcconfig experimental/iOSSampleApp/SkiOSSampleApp-Debug.xcconfig experimental/iOSSampleApp/SkiOSSampleApp-Release.xcconfig gpu/src/android/GrGLDefaultInterface_android.cpp gyp/common.gypi gyp_skia include/ports/SkHarfBuzzFont.h include/views/SkOSWindow_wxwidgets.h make.bat make.py src/opts/memset.arm.S src/opts/memset16_neon.S src/opts/memset32_neon.S src/opts/opts_check_arm.cpp src/ports/SkDebug_brew.cpp src/ports/SkMemory_brew.cpp src/ports/SkOSFile_brew.cpp src/ports/SkXMLParser_empty.cpp src/utils/ios/SkImageDecoder_iOS.mm src/utils/ios/SkOSFile_iOS.mm src/utils/ios/SkStream_NSData.mm tests/FillPathTest.cpp Review URL: http://codereview.appspot.com/4816058 git-svn-id: http://skia.googlecode.com/svn/trunk@1982 2bbb7eff-a529-9590-31e7-b0007b416f81
2011-07-28 14:26:00 +00:00
/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SampleCode.h"
#include "SkBlurMask.h"
#include "SkBlurMaskFilter.h"
#include "SkCanvas.h"
#include "SkDevice.h"
static SkBitmap make_bitmap() {
SkBitmap bm;
bm.setConfig(SkBitmap::kARGB_8888_Config , 5, 5);
bm.allocPixels();
for (int y = 0; y < bm.height(); y++) {
uint32_t* p = bm.getAddr32(0, y);
for (int x = 0; x < bm.width(); x++) {
p[x] = ((x + y) & 1) ? SK_ColorWHITE : SK_ColorBLACK;
}
}
bm.unlockPixels();
return bm;
}
class TextureDomainView : public SampleView {
SkBitmap fBM;
public:
TextureDomainView(){
fBM = make_bitmap();
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "Texture Domain");
return true;
}
return this->INHERITED::onQuery(evt);
}
virtual void onDrawContent(SkCanvas* canvas) {
SkIRect srcRect;
SkRect dstRect;
SkPaint paint;
paint.setFilterLevel(SkPaint::kLow_FilterLevel);
// Test that bitmap draws from malloc-backed bitmaps respect
// the constrained texture domain.
srcRect.setXYWH(1, 1, 3, 3);
dstRect.setXYWH(5.0f, 5.0f, 305.0f, 305.0f);
canvas->drawBitmapRect(fBM, &srcRect, dstRect, &paint);
// Test that bitmap draws across separate devices also respect
// the constrainted texture domain.
// Note: GPU-backed bitmaps follow a different rendering path
// when copying from one GPU device to another.
SkAutoTUnref<SkBaseDevice> secondDevice(canvas->createCompatibleDevice(
SkBitmap::kARGB_8888_Config, 5, 5, true));
SkCanvas secondCanvas(secondDevice.get());
srcRect.setXYWH(1, 1, 3, 3);
dstRect.setXYWH(1.0f, 1.0f, 3.0f, 3.0f);
secondCanvas.drawBitmapRect(fBM, &srcRect, dstRect, &paint);
SkBitmap deviceBitmap = secondDevice->accessBitmap(false);
srcRect.setXYWH(1, 1, 3, 3);
dstRect.setXYWH(405.0f, 5.0f, 305.0f, 305.0f);
canvas->drawBitmapRect(deviceBitmap, &srcRect, dstRect, &paint);
// Test that bitmap blurring using a subrect
// renders correctly
srcRect.setXYWH(1, 1, 3, 3);
dstRect.setXYWH(5.0f, 405.0f, 305.0f, 305.0f);
SkMaskFilter* mf = SkBlurMaskFilter::Create(
SkBlurMaskFilter::kNormal_BlurStyle,
SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(5)),
SkBlurMaskFilter::kHighQuality_BlurFlag |
SkBlurMaskFilter::kIgnoreTransform_BlurFlag);
paint.setMaskFilter(mf)->unref();
canvas->drawBitmapRect(deviceBitmap, &srcRect, dstRect, &paint);
// Blur and a rotation + NULL src rect
// This should not trigger the texture domain code
// but it will test a code path in SkGpuDevice::drawBitmap
// that handles blurs with rects transformed to non-
// orthogonal rects. It also tests the NULL src rect handling
mf = SkBlurMaskFilter::Create(
SkBlurMaskFilter::kNormal_BlurStyle,
SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(5)),
SkBlurMaskFilter::kHighQuality_BlurFlag);
paint.setMaskFilter(mf)->unref();
dstRect.setXYWH(-150.0f, -150.0f, 300.0f, 300.0f);
canvas->translate(550, 550);
canvas->rotate(45);
canvas->drawBitmapRect(fBM, NULL, dstRect, &paint);
}
private:
typedef SkView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new TextureDomainView; }
static SkViewRegister reg(MyFactory);