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skia2/tests/ImageFilterTest.cpp
senorblanco@chromium.org 68250c8e7c Fix for empty saveLayer() with a filter which affects transparent black. 
If an saveLayer()/restore() is recorded, tilegrid/rtree will cull them
out and not draw anything. This is correct for most cases, but if the
paint in the saveLayer() is one that affects transparent black (e.g.,
it contains a color filter or image filter which affects transparent
black), this is incorrect: the filter should be applied.

Fixed by adding a no-op between the saveLayer() and restore(), and
adding a bbox node pointing at that node with the saveLayer()'s bounds.

This exposed a bug in SkPictureRecord.cpp's match(), where it would
assert if the NOOP was the last op seen. Fixed with an early-out before
calling peek_op_and_size().

BUG=skia:2254

Review URL: https://codereview.chromium.org/262363007

git-svn-id: http://skia.googlecode.com/svn/trunk@14604 2bbb7eff-a529-9590-31e7-b0007b416f81
2014-05-06 22:52:55 +00:00

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/*
* 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 "SkBicubicImageFilter.h"
#include "SkBitmap.h"
#include "SkBitmapDevice.h"
#include "SkBitmapSource.h"
#include "SkBlurImageFilter.h"
#include "SkCanvas.h"
#include "SkColorFilterImageFilter.h"
#include "SkColorMatrixFilter.h"
#include "SkDeviceImageFilterProxy.h"
#include "SkDisplacementMapEffect.h"
#include "SkDropShadowImageFilter.h"
#include "SkFlattenableBuffers.h"
#include "SkGradientShader.h"
#include "SkLightingImageFilter.h"
#include "SkMatrixConvolutionImageFilter.h"
#include "SkMatrixImageFilter.h"
#include "SkMergeImageFilter.h"
#include "SkMorphologyImageFilter.h"
#include "SkOffsetImageFilter.h"
#include "SkPicture.h"
#include "SkPictureRecorder.h"
#include "SkRect.h"
#include "SkTileImageFilter.h"
#include "SkXfermodeImageFilter.h"
#include "Test.h"
#if SK_SUPPORT_GPU
#include "GrContextFactory.h"
#include "SkGpuDevice.h"
#endif
static const int kBitmapSize = 4;
namespace {
class MatrixTestImageFilter : public SkImageFilter {
public:
MatrixTestImageFilter(skiatest::Reporter* reporter, const SkMatrix& expectedMatrix)
: SkImageFilter(0), fReporter(reporter), fExpectedMatrix(expectedMatrix) {
}
virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context& ctx,
SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE {
REPORTER_ASSERT(fReporter, ctx.ctm() == fExpectedMatrix);
return true;
}
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(MatrixTestImageFilter)
protected:
explicit MatrixTestImageFilter(SkReadBuffer& buffer) : SkImageFilter(0) {
fReporter = static_cast<skiatest::Reporter*>(buffer.readFunctionPtr());
buffer.readMatrix(&fExpectedMatrix);
}
virtual void flatten(SkWriteBuffer& buffer) const SK_OVERRIDE {
buffer.writeFunctionPtr(fReporter);
buffer.writeMatrix(fExpectedMatrix);
}
private:
skiatest::Reporter* fReporter;
SkMatrix fExpectedMatrix;
};
}
static void make_small_bitmap(SkBitmap& bitmap) {
bitmap.allocN32Pixels(kBitmapSize, kBitmapSize);
SkCanvas canvas(bitmap);
canvas.clear(0x00000000);
SkPaint darkPaint;
darkPaint.setColor(0xFF804020);
SkPaint lightPaint;
lightPaint.setColor(0xFF244484);
const int i = kBitmapSize / 4;
for (int y = 0; y < kBitmapSize; y += i) {
for (int x = 0; x < kBitmapSize; x += i) {
canvas.save();
canvas.translate(SkIntToScalar(x), SkIntToScalar(y));
canvas.drawRect(SkRect::MakeXYWH(0, 0,
SkIntToScalar(i),
SkIntToScalar(i)), darkPaint);
canvas.drawRect(SkRect::MakeXYWH(SkIntToScalar(i),
0,
SkIntToScalar(i),
SkIntToScalar(i)), lightPaint);
canvas.drawRect(SkRect::MakeXYWH(0,
SkIntToScalar(i),
SkIntToScalar(i),
SkIntToScalar(i)), lightPaint);
canvas.drawRect(SkRect::MakeXYWH(SkIntToScalar(i),
SkIntToScalar(i),
SkIntToScalar(i),
SkIntToScalar(i)), darkPaint);
canvas.restore();
}
}
}
static SkImageFilter* make_scale(float amount, SkImageFilter* input = NULL) {
SkScalar s = amount;
SkScalar matrix[20] = { s, 0, 0, 0, 0,
0, s, 0, 0, 0,
0, 0, s, 0, 0,
0, 0, 0, s, 0 };
SkAutoTUnref<SkColorFilter> filter(SkColorMatrixFilter::Create(matrix));
return SkColorFilterImageFilter::Create(filter, input);
}
static SkImageFilter* make_grayscale(SkImageFilter* input = NULL, const SkImageFilter::CropRect* cropRect = NULL) {
SkScalar matrix[20];
memset(matrix, 0, 20 * sizeof(SkScalar));
matrix[0] = matrix[5] = matrix[10] = 0.2126f;
matrix[1] = matrix[6] = matrix[11] = 0.7152f;
matrix[2] = matrix[7] = matrix[12] = 0.0722f;
matrix[18] = 1.0f;
SkAutoTUnref<SkColorFilter> filter(SkColorMatrixFilter::Create(matrix));
return SkColorFilterImageFilter::Create(filter, input, cropRect);
}
DEF_TEST(ImageFilter, reporter) {
{
// Check that two non-clipping color matrices concatenate into a single filter.
SkAutoTUnref<SkImageFilter> halfBrightness(make_scale(0.5f));
SkAutoTUnref<SkImageFilter> quarterBrightness(make_scale(0.5f, halfBrightness));
REPORTER_ASSERT(reporter, NULL == quarterBrightness->getInput(0));
}
{
// Check that a clipping color matrix followed by a grayscale does not concatenate into a single filter.
SkAutoTUnref<SkImageFilter> doubleBrightness(make_scale(2.0f));
SkAutoTUnref<SkImageFilter> halfBrightness(make_scale(0.5f, doubleBrightness));
REPORTER_ASSERT(reporter, NULL != halfBrightness->getInput(0));
}
{
// Check that a color filter image filter without a crop rect can be
// expressed as a color filter.
SkAutoTUnref<SkImageFilter> gray(make_grayscale());
REPORTER_ASSERT(reporter, true == gray->asColorFilter(NULL));
}
{
// Check that a color filter image filter with a crop rect cannot
// be expressed as a color filter.
SkImageFilter::CropRect cropRect(SkRect::MakeXYWH(0, 0, 100, 100));
SkAutoTUnref<SkImageFilter> grayWithCrop(make_grayscale(NULL, &cropRect));
REPORTER_ASSERT(reporter, false == grayWithCrop->asColorFilter(NULL));
}
{
// Tests pass by not asserting
SkBitmap bitmap, result;
make_small_bitmap(bitmap);
result.allocN32Pixels(kBitmapSize, kBitmapSize);
{
// This tests for :
// 1 ) location at (0,0,1)
SkPoint3 location(0, 0, SK_Scalar1);
// 2 ) location and target at same value
SkPoint3 target(location.fX, location.fY, location.fZ);
// 3 ) large negative specular exponent value
SkScalar specularExponent = -1000;
SkAutoTUnref<SkImageFilter> bmSrc(SkBitmapSource::Create(bitmap));
SkPaint paint;
paint.setImageFilter(SkLightingImageFilter::CreateSpotLitSpecular(
location, target, specularExponent, 180,
0xFFFFFFFF, SK_Scalar1, SK_Scalar1, SK_Scalar1,
bmSrc))->unref();
SkCanvas canvas(result);
SkRect r = SkRect::MakeWH(SkIntToScalar(kBitmapSize),
SkIntToScalar(kBitmapSize));
canvas.drawRect(r, paint);
}
{
// This tests for scale bringing width to 0
SkSize scale = SkSize::Make(-0.001f, SK_Scalar1);
SkAutoTUnref<SkImageFilter> bmSrc(SkBitmapSource::Create(bitmap));
SkAutoTUnref<SkBicubicImageFilter> bicubic(
SkBicubicImageFilter::CreateMitchell(scale, bmSrc));
SkBitmapDevice device(bitmap);
SkDeviceImageFilterProxy proxy(&device);
SkIPoint loc = SkIPoint::Make(0, 0);
// An empty input should early return and return false
SkAutoTUnref<SkImageFilter::Cache> cache(SkImageFilter::Cache::Create(2));
SkImageFilter::Context ctx(SkMatrix::I(), SkIRect::MakeEmpty(), cache.get());
REPORTER_ASSERT(reporter,
!bicubic->filterImage(&proxy, bitmap, ctx, &result, &loc));
}
}
}
static void test_crop_rects(SkBaseDevice* device, skiatest::Reporter* reporter) {
// Check that all filters offset to their absolute crop rect,
// unaffected by the input crop rect.
// Tests pass by not asserting.
SkBitmap bitmap;
bitmap.allocN32Pixels(100, 100);
bitmap.eraseARGB(0, 0, 0, 0);
SkDeviceImageFilterProxy proxy(device);
SkImageFilter::CropRect inputCropRect(SkRect::MakeXYWH(8, 13, 80, 80));
SkImageFilter::CropRect cropRect(SkRect::MakeXYWH(20, 30, 60, 60));
SkAutoTUnref<SkImageFilter> input(make_grayscale(NULL, &inputCropRect));
SkAutoTUnref<SkColorFilter> cf(SkColorFilter::CreateModeFilter(SK_ColorRED, SkXfermode::kSrcIn_Mode));
SkPoint3 location(0, 0, SK_Scalar1);
SkPoint3 target(SK_Scalar1, SK_Scalar1, SK_Scalar1);
SkScalar kernel[9] = {
SkIntToScalar( 1), SkIntToScalar( 1), SkIntToScalar( 1),
SkIntToScalar( 1), SkIntToScalar(-7), SkIntToScalar( 1),
SkIntToScalar( 1), SkIntToScalar( 1), SkIntToScalar( 1),
};
SkISize kernelSize = SkISize::Make(3, 3);
SkScalar gain = SK_Scalar1, bias = 0;
SkImageFilter* filters[] = {
SkColorFilterImageFilter::Create(cf.get(), input.get(), &cropRect),
SkDisplacementMapEffect::Create(SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kB_ChannelSelectorType,
40.0f, input.get(), input.get(), &cropRect),
SkBlurImageFilter::Create(SK_Scalar1, SK_Scalar1, input.get(), &cropRect),
SkDropShadowImageFilter::Create(SK_Scalar1, SK_Scalar1, SK_Scalar1, SK_Scalar1, SK_ColorGREEN, input.get(), &cropRect),
SkLightingImageFilter::CreatePointLitDiffuse(location, SK_ColorGREEN, 0, 0, input.get(), &cropRect),
SkLightingImageFilter::CreatePointLitSpecular(location, SK_ColorGREEN, 0, 0, 0, input.get(), &cropRect),
SkMatrixConvolutionImageFilter::Create(kernelSize, kernel, gain, bias, SkIPoint::Make(1, 1), SkMatrixConvolutionImageFilter::kRepeat_TileMode, false, input.get(), &cropRect),
SkMergeImageFilter::Create(input.get(), input.get(), SkXfermode::kSrcOver_Mode, &cropRect),
SkOffsetImageFilter::Create(SK_Scalar1, SK_Scalar1, input.get(), &cropRect),
SkOffsetImageFilter::Create(SK_Scalar1, SK_Scalar1, input.get(), &cropRect),
SkDilateImageFilter::Create(3, 2, input.get(), &cropRect),
SkErodeImageFilter::Create(2, 3, input.get(), &cropRect),
SkTileImageFilter::Create(inputCropRect.rect(), cropRect.rect(), input.get()),
SkXfermodeImageFilter::Create(SkXfermode::Create(SkXfermode::kSrcOver_Mode), input.get(), input.get(), &cropRect),
};
for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) {
SkImageFilter* filter = filters[i];
SkBitmap result;
SkIPoint offset;
SkString str;
str.printf("filter %d", static_cast<int>(i));
SkAutoTUnref<SkImageFilter::Cache> cache(SkImageFilter::Cache::Create(2));
SkImageFilter::Context ctx(SkMatrix::I(), SkIRect::MakeLargest(), cache.get());
REPORTER_ASSERT_MESSAGE(reporter, filter->filterImage(&proxy, bitmap, ctx,
&result, &offset), str.c_str());
REPORTER_ASSERT_MESSAGE(reporter, offset.fX == 20 && offset.fY == 30, str.c_str());
}
for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) {
SkSafeUnref(filters[i]);
}
}
static SkBitmap make_gradient_circle(int width, int height) {
SkBitmap bitmap;
SkScalar x = SkIntToScalar(width / 2);
SkScalar y = SkIntToScalar(height / 2);
SkScalar radius = SkMinScalar(x, y) * 0.8f;
bitmap.allocN32Pixels(width, height);
SkCanvas canvas(bitmap);
canvas.clear(0x00000000);
SkColor colors[2];
colors[0] = SK_ColorWHITE;
colors[1] = SK_ColorBLACK;
SkAutoTUnref<SkShader> shader(
SkGradientShader::CreateRadial(SkPoint::Make(x, y), radius, colors, NULL, 2,
SkShader::kClamp_TileMode)
);
SkPaint paint;
paint.setShader(shader);
canvas.drawCircle(x, y, radius, paint);
return bitmap;
}
DEF_TEST(ImageFilterDrawTiled, reporter) {
// Check that all filters when drawn tiled (with subsequent clip rects) exactly
// match the same filters drawn with a single full-canvas bitmap draw.
// Tests pass by not asserting.
SkAutoTUnref<SkColorFilter> cf(SkColorFilter::CreateModeFilter(SK_ColorRED, SkXfermode::kSrcIn_Mode));
SkPoint3 location(0, 0, SK_Scalar1);
SkPoint3 target(SK_Scalar1, SK_Scalar1, SK_Scalar1);
SkScalar kernel[9] = {
SkIntToScalar( 1), SkIntToScalar( 1), SkIntToScalar( 1),
SkIntToScalar( 1), SkIntToScalar(-7), SkIntToScalar( 1),
SkIntToScalar( 1), SkIntToScalar( 1), SkIntToScalar( 1),
};
SkISize kernelSize = SkISize::Make(3, 3);
SkScalar gain = SK_Scalar1, bias = 0;
SkAutoTUnref<SkImageFilter> gradient_source(SkBitmapSource::Create(make_gradient_circle(64, 64)));
struct {
const char* fName;
SkImageFilter* fFilter;
} filters[] = {
{ "color filter", SkColorFilterImageFilter::Create(cf.get()) },
{ "displacement map", SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kB_ChannelSelectorType,
40.0f, gradient_source.get()) },
{ "blur", SkBlurImageFilter::Create(SK_Scalar1, SK_Scalar1) },
{ "drop shadow", SkDropShadowImageFilter::Create(
SK_Scalar1, SK_Scalar1, SK_Scalar1, SK_Scalar1, SK_ColorGREEN) },
{ "diffuse lighting", SkLightingImageFilter::CreatePointLitDiffuse(
location, SK_ColorGREEN, 0, 0) },
{ "specular lighting",
SkLightingImageFilter::CreatePointLitSpecular(location, SK_ColorGREEN, 0, 0, 0) },
{ "matrix convolution",
SkMatrixConvolutionImageFilter::Create(
kernelSize, kernel, gain, bias, SkIPoint::Make(1, 1),
SkMatrixConvolutionImageFilter::kRepeat_TileMode, false) },
{ "merge", SkMergeImageFilter::Create(NULL, NULL, SkXfermode::kSrcOver_Mode) },
{ "offset", SkOffsetImageFilter::Create(SK_Scalar1, SK_Scalar1) },
{ "dilate", SkDilateImageFilter::Create(3, 2) },
{ "erode", SkErodeImageFilter::Create(2, 3) },
{ "tile", SkTileImageFilter::Create(SkRect::MakeXYWH(0, 0, 50, 50),
SkRect::MakeXYWH(0, 0, 100, 100), NULL) },
};
SkBitmap untiledResult, tiledResult;
int width = 64, height = 64;
untiledResult.allocN32Pixels(width, height);
tiledResult.allocN32Pixels(width, height);
SkCanvas tiledCanvas(tiledResult);
SkCanvas untiledCanvas(untiledResult);
tiledCanvas.clear(0);
untiledCanvas.clear(0);
int tileSize = 16;
for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) {
SkPaint paint;
paint.setImageFilter(filters[i].fFilter);
paint.setTextSize(SkIntToScalar(height));
paint.setColor(SK_ColorWHITE);
SkString str;
const char* text = "ABC";
SkScalar ypos = SkIntToScalar(height);
untiledCanvas.drawText(text, strlen(text), 0, ypos, paint);
for (int y = 0; y < height; y += tileSize) {
for (int x = 0; x < width; x += tileSize) {
tiledCanvas.save();
tiledCanvas.clipRect(SkRect::Make(SkIRect::MakeXYWH(x, y, tileSize, tileSize)));
tiledCanvas.drawText(text, strlen(text), 0, ypos, paint);
tiledCanvas.restore();
}
}
untiledCanvas.flush();
tiledCanvas.flush();
for (int y = 0; y < height; y++) {
int diffs = memcmp(untiledResult.getAddr32(0, y), tiledResult.getAddr32(0, y), untiledResult.rowBytes());
REPORTER_ASSERT_MESSAGE(reporter, !diffs, filters[i].fName);
if (diffs) {
break;
}
}
}
for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) {
SkSafeUnref(filters[i].fFilter);
}
}
DEF_TEST(ImageFilterMatrixConvolution, reporter) {
// Check that a 1x3 filter does not cause a spurious assert.
SkScalar kernel[3] = {
SkIntToScalar( 1), SkIntToScalar( 1), SkIntToScalar( 1),
};
SkISize kernelSize = SkISize::Make(1, 3);
SkScalar gain = SK_Scalar1, bias = 0;
SkIPoint kernelOffset = SkIPoint::Make(0, 0);
SkAutoTUnref<SkImageFilter> filter(
SkMatrixConvolutionImageFilter::Create(
kernelSize, kernel, gain, bias, kernelOffset,
SkMatrixConvolutionImageFilter::kRepeat_TileMode, false));
SkBitmap result;
int width = 16, height = 16;
result.allocN32Pixels(width, height);
SkCanvas canvas(result);
canvas.clear(0);
SkPaint paint;
paint.setImageFilter(filter);
SkRect rect = SkRect::Make(SkIRect::MakeWH(width, height));
canvas.drawRect(rect, paint);
}
DEF_TEST(ImageFilterMatrixConvolutionBorder, reporter) {
// Check that a filter with borders outside the target bounds
// does not crash.
SkScalar kernel[3] = {
0, 0, 0,
};
SkISize kernelSize = SkISize::Make(3, 1);
SkScalar gain = SK_Scalar1, bias = 0;
SkIPoint kernelOffset = SkIPoint::Make(2, 0);
SkAutoTUnref<SkImageFilter> filter(
SkMatrixConvolutionImageFilter::Create(
kernelSize, kernel, gain, bias, kernelOffset,
SkMatrixConvolutionImageFilter::kClamp_TileMode, true));
SkBitmap result;
int width = 10, height = 10;
result.allocN32Pixels(width, height);
SkCanvas canvas(result);
canvas.clear(0);
SkPaint filterPaint;
filterPaint.setImageFilter(filter);
SkRect bounds = SkRect::MakeWH(1, 10);
SkRect rect = SkRect::Make(SkIRect::MakeWH(width, height));
SkPaint rectPaint;
canvas.saveLayer(&bounds, &filterPaint);
canvas.drawRect(rect, rectPaint);
canvas.restore();
}
DEF_TEST(ImageFilterCropRect, reporter) {
SkBitmap temp;
temp.allocN32Pixels(100, 100);
SkBitmapDevice device(temp);
test_crop_rects(&device, reporter);
}
DEF_TEST(ImageFilterMatrixTest, reporter) {
SkBitmap temp;
temp.allocN32Pixels(100, 100);
SkBitmapDevice device(temp);
SkCanvas canvas(&device);
canvas.scale(SkIntToScalar(2), SkIntToScalar(2));
SkMatrix expectedMatrix = canvas.getTotalMatrix();
SkRTreeFactory factory;
SkPictureRecorder recorder;
SkCanvas* recordingCanvas = recorder.beginRecording(100, 100, &factory, 0);
SkPaint paint;
SkAutoTUnref<MatrixTestImageFilter> imageFilter(
new MatrixTestImageFilter(reporter, expectedMatrix));
paint.setImageFilter(imageFilter.get());
recordingCanvas->saveLayer(NULL, &paint);
SkPaint solidPaint;
solidPaint.setColor(0xFFFFFFFF);
recordingCanvas->save();
recordingCanvas->scale(SkIntToScalar(10), SkIntToScalar(10));
recordingCanvas->drawRect(SkRect::Make(SkIRect::MakeWH(100, 100)), solidPaint);
recordingCanvas->restore(); // scale
recordingCanvas->restore(); // saveLayer
SkAutoTUnref<SkPicture> picture(recorder.endRecording());
canvas.drawPicture(*picture);
}
DEF_TEST(ImageFilterEmptySaveLayerTest, reporter) {
// Even when there's an empty saveLayer()/restore(), ensure that an image
// filter or color filter which affects transparent black still draws.
SkBitmap bitmap;
bitmap.allocN32Pixels(10, 10);
SkBitmapDevice device(bitmap);
SkCanvas canvas(&device);
SkRTreeFactory factory;
SkPictureRecorder recorder;
SkAutoTUnref<SkColorFilter> green(
SkColorFilter::CreateModeFilter(SK_ColorGREEN, SkXfermode::kSrc_Mode));
SkAutoTUnref<SkColorFilterImageFilter> imageFilter(
SkColorFilterImageFilter::Create(green.get()));
SkPaint imageFilterPaint;
imageFilterPaint.setImageFilter(imageFilter.get());
SkPaint colorFilterPaint;
colorFilterPaint.setColorFilter(green.get());
SkRect bounds = SkRect::MakeWH(10, 10);
SkCanvas* recordingCanvas = recorder.beginRecording(10, 10, &factory, 0);
recordingCanvas->saveLayer(&bounds, &imageFilterPaint);
recordingCanvas->restore();
SkAutoTUnref<SkPicture> picture(recorder.endRecording());
canvas.clear(0);
canvas.drawPicture(*picture);
uint32_t pixel = *bitmap.getAddr32(0, 0);
REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
recordingCanvas = recorder.beginRecording(10, 10, &factory, 0);
recordingCanvas->saveLayer(NULL, &imageFilterPaint);
recordingCanvas->restore();
SkAutoTUnref<SkPicture> picture2(recorder.endRecording());
canvas.clear(0);
canvas.drawPicture(*picture2);
pixel = *bitmap.getAddr32(0, 0);
REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
recordingCanvas = recorder.beginRecording(10, 10, &factory, 0);
recordingCanvas->saveLayer(&bounds, &colorFilterPaint);
recordingCanvas->restore();
SkAutoTUnref<SkPicture> picture3(recorder.endRecording());
canvas.clear(0);
canvas.drawPicture(*picture3);
pixel = *bitmap.getAddr32(0, 0);
REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
}
static void test_huge_blur(SkBaseDevice* device, skiatest::Reporter* reporter) {
SkCanvas canvas(device);
SkBitmap bitmap;
bitmap.allocN32Pixels(100, 100);
bitmap.eraseARGB(0, 0, 0, 0);
// Check that a blur with an insane radius does not crash or assert.
SkAutoTUnref<SkImageFilter> blur(SkBlurImageFilter::Create(SkIntToScalar(1<<30), SkIntToScalar(1<<30)));
SkPaint paint;
paint.setImageFilter(blur);
canvas.drawSprite(bitmap, 0, 0, &paint);
}
DEF_TEST(HugeBlurImageFilter, reporter) {
SkBitmap temp;
temp.allocN32Pixels(100, 100);
SkBitmapDevice device(temp);
test_huge_blur(&device, reporter);
}
static void test_xfermode_cropped_input(SkBaseDevice* device, skiatest::Reporter* reporter) {
SkCanvas canvas(device);
canvas.clear(0);
SkBitmap bitmap;
bitmap.allocN32Pixels(1, 1);
bitmap.eraseARGB(255, 255, 255, 255);
SkAutoTUnref<SkColorFilter> green(
SkColorFilter::CreateModeFilter(SK_ColorGREEN, SkXfermode::kSrcIn_Mode));
SkAutoTUnref<SkColorFilterImageFilter> greenFilter(
SkColorFilterImageFilter::Create(green.get()));
SkImageFilter::CropRect cropRect(SkRect::MakeEmpty());
SkAutoTUnref<SkColorFilterImageFilter> croppedOut(
SkColorFilterImageFilter::Create(green.get(), NULL, &cropRect));
// Check that an xfermode image filter whose input has been cropped out still draws the other
// input. Also check that drawing with both inputs cropped out doesn't cause a GPU warning.
SkXfermode* mode = SkXfermode::Create(SkXfermode::kSrcOver_Mode);
SkAutoTUnref<SkImageFilter> xfermodeNoFg(
SkXfermodeImageFilter::Create(mode, greenFilter, croppedOut));
SkAutoTUnref<SkImageFilter> xfermodeNoBg(
SkXfermodeImageFilter::Create(mode, croppedOut, greenFilter));
SkAutoTUnref<SkImageFilter> xfermodeNoFgNoBg(
SkXfermodeImageFilter::Create(mode, croppedOut, croppedOut));
SkPaint paint;
paint.setImageFilter(xfermodeNoFg);
canvas.drawSprite(bitmap, 0, 0, &paint);
uint32_t pixel;
SkImageInfo info = SkImageInfo::MakeN32Premul(1, 1);
canvas.readPixels(info, &pixel, 4, 0, 0);
REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
paint.setImageFilter(xfermodeNoBg);
canvas.drawSprite(bitmap, 0, 0, &paint);
canvas.readPixels(info, &pixel, 4, 0, 0);
REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
paint.setImageFilter(xfermodeNoFgNoBg);
canvas.drawSprite(bitmap, 0, 0, &paint);
canvas.readPixels(info, &pixel, 4, 0, 0);
REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
}
DEF_TEST(ImageFilterNestedSaveLayer, reporter) {
SkBitmap temp;
temp.allocN32Pixels(50, 50);
SkBitmapDevice device(temp);
SkCanvas canvas(&device);
canvas.clear(0x0);
SkBitmap bitmap;
bitmap.allocN32Pixels(10, 10);
bitmap.eraseColor(SK_ColorGREEN);
SkMatrix matrix;
matrix.setScale(SkIntToScalar(2), SkIntToScalar(2));
matrix.postTranslate(SkIntToScalar(-20), SkIntToScalar(-20));
SkAutoTUnref<SkImageFilter> matrixFilter(
SkMatrixImageFilter::Create(matrix, SkPaint::kLow_FilterLevel));
// Test that saveLayer() with a filter nested inside another saveLayer() applies the
// correct offset to the filter matrix.
SkRect bounds1 = SkRect::MakeXYWH(10, 10, 30, 30);
canvas.saveLayer(&bounds1, NULL);
SkPaint filterPaint;
filterPaint.setImageFilter(matrixFilter);
SkRect bounds2 = SkRect::MakeXYWH(20, 20, 10, 10);
canvas.saveLayer(&bounds2, &filterPaint);
SkPaint greenPaint;
greenPaint.setColor(SK_ColorGREEN);
canvas.drawRect(bounds2, greenPaint);
canvas.restore();
canvas.restore();
SkPaint strokePaint;
strokePaint.setStyle(SkPaint::kStroke_Style);
strokePaint.setColor(SK_ColorRED);
SkImageInfo info = SkImageInfo::MakeN32Premul(1, 1);
uint32_t pixel;
canvas.readPixels(info, &pixel, 4, 25, 25);
REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
// Test that drawSprite() with a filter nested inside a saveLayer() applies the
// correct offset to the filter matrix.
canvas.clear(0x0);
canvas.readPixels(info, &pixel, 4, 25, 25);
canvas.saveLayer(&bounds1, NULL);
canvas.drawSprite(bitmap, 20, 20, &filterPaint);
canvas.restore();
canvas.readPixels(info, &pixel, 4, 25, 25);
REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
}
DEF_TEST(XfermodeImageFilterCroppedInput, reporter) {
SkBitmap temp;
temp.allocN32Pixels(100, 100);
SkBitmapDevice device(temp);
test_xfermode_cropped_input(&device, reporter);
}
#if SK_SUPPORT_GPU
DEF_GPUTEST(ImageFilterCropRectGPU, reporter, factory) {
GrContext* context = factory->get(static_cast<GrContextFactory::GLContextType>(0));
SkAutoTUnref<SkGpuDevice> device(SkGpuDevice::Create(context,
SkImageInfo::MakeN32Premul(100, 100),
0));
test_crop_rects(device, reporter);
}
DEF_GPUTEST(HugeBlurImageFilterGPU, reporter, factory) {
GrContext* context = factory->get(static_cast<GrContextFactory::GLContextType>(0));
SkAutoTUnref<SkGpuDevice> device(SkGpuDevice::Create(context,
SkImageInfo::MakeN32Premul(100, 100),
0));
test_huge_blur(device, reporter);
}
DEF_GPUTEST(XfermodeImageFilterCroppedInputGPU, reporter, factory) {
GrContext* context = factory->get(static_cast<GrContextFactory::GLContextType>(0));
SkAutoTUnref<SkGpuDevice> device(SkGpuDevice::Create(context,
SkImageInfo::MakeN32Premul(1, 1),
0));
test_xfermode_cropped_input(device, reporter);
}
#endif
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