skia2/tests/ImageFilterTest.cpp
senorblanco 3df05015ef Fix SkColorFilterImageFilter matrix optimization.
The order of matrices passed to multiplication was wrong (apparently,
this optimization was only being tested with matrices which commute).

See Chrome bug http://crbug.com/378362

R=sugoi@chromium.org

Author: senorblanco@chromium.org

Review URL: https://codereview.chromium.org/371523002
2014-07-03 11:13:09 -07:00

771 lines
31 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 "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 "SkFlattenableSerialization.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 "SkPictureImageFilter.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));
}
{
// Check that two non-commutative matrices are concatenated in
// the correct order.
SkScalar blueToRedMatrix[20] = { 0 };
blueToRedMatrix[2] = blueToRedMatrix[18] = SK_Scalar1;
SkScalar redToGreenMatrix[20] = { 0 };
redToGreenMatrix[5] = redToGreenMatrix[18] = SK_Scalar1;
SkAutoTUnref<SkColorFilter> blueToRed(SkColorMatrixFilter::Create(blueToRedMatrix));
SkAutoTUnref<SkImageFilter> filter1(SkColorFilterImageFilter::Create(blueToRed.get()));
SkAutoTUnref<SkColorFilter> redToGreen(SkColorMatrixFilter::Create(redToGreenMatrix));
SkAutoTUnref<SkImageFilter> filter2(SkColorFilterImageFilter::Create(redToGreen.get(), filter1.get()));
SkBitmap result;
result.allocN32Pixels(kBitmapSize, kBitmapSize);
SkPaint paint;
paint.setColor(SK_ColorBLUE);
paint.setImageFilter(filter2.get());
SkCanvas canvas(result);
canvas.clear(0x0);
SkRect rect = SkRect::Make(SkIRect::MakeWH(kBitmapSize, kBitmapSize));
canvas.drawRect(rect, paint);
uint32_t pixel = *result.getAddr32(0, 0);
// The result here should be green, since we have effectively shifted blue to green.
REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
}
{
// 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);
}
}
}
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;
SkScalar five = SkIntToScalar(5);
SkAutoTUnref<SkImageFilter> gradient_source(SkBitmapSource::Create(make_gradient_circle(64, 64)));
SkAutoTUnref<SkImageFilter> blur(SkBlurImageFilter::Create(five, five));
SkMatrix matrix;
matrix.setTranslate(SK_Scalar1, SK_Scalar1);
matrix.postRotate(SkIntToScalar(45), SK_Scalar1, SK_Scalar1);
SkRTreeFactory factory;
SkPictureRecorder recorder;
SkCanvas* recordingCanvas = recorder.beginRecording(64, 64, &factory, 0);
SkPaint greenPaint;
greenPaint.setColor(SK_ColorGREEN);
recordingCanvas->drawRect(SkRect::Make(SkIRect::MakeXYWH(10, 10, 30, 20)), greenPaint);
SkAutoTUnref<SkPicture> picture(recorder.endRecording());
SkAutoTUnref<SkImageFilter> pictureFilter(SkPictureImageFilter::Create(picture.get()));
struct {
const char* fName;
SkImageFilter* fFilter;
} filters[] = {
{ "color filter", SkColorFilterImageFilter::Create(cf.get()) },
{ "displacement map", SkDisplacementMapEffect::Create(
SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kB_ChannelSelectorType,
20.0f, 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) },
{ "matrix", SkMatrixImageFilter::Create(matrix, SkPaint::kLow_FilterLevel) },
{ "blur and offset", SkOffsetImageFilter::Create(five, five, blur.get()) },
{ "picture and blur", SkBlurImageFilter::Create(five, five, pictureFilter.get()) },
};
SkBitmap untiledResult, tiledResult;
int width = 64, height = 64;
untiledResult.allocN32Pixels(width, height);
tiledResult.allocN32Pixels(width, height);
SkCanvas tiledCanvas(tiledResult);
SkCanvas untiledCanvas(untiledResult);
int tileSize = 8;
for (int scale = 1; scale <= 2; ++scale) {
for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) {
tiledCanvas.clear(0);
untiledCanvas.clear(0);
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.save();
untiledCanvas.scale(SkIntToScalar(scale), SkIntToScalar(scale));
untiledCanvas.drawText(text, strlen(text), 0, ypos, paint);
untiledCanvas.restore();
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.scale(SkIntToScalar(scale), SkIntToScalar(scale));
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(ImageFilterMatrix, 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(ImageFilterPictureImageFilter, reporter) {
SkRTreeFactory factory;
SkPictureRecorder recorder;
SkCanvas* recordingCanvas = recorder.beginRecording(1, 1, &factory, 0);
// Create an SkPicture which simply draws a green 1x1 rectangle.
SkPaint greenPaint;
greenPaint.setColor(SK_ColorGREEN);
recordingCanvas->drawRect(SkRect::Make(SkIRect::MakeWH(1, 1)), greenPaint);
SkAutoTUnref<SkPicture> picture(recorder.endRecording());
// Wrap that SkPicture in an SkPictureImageFilter.
SkAutoTUnref<SkImageFilter> imageFilter(
SkPictureImageFilter::Create(picture.get()));
// Check that SkPictureImageFilter successfully serializes its contained
// SkPicture when not in cross-process mode.
SkPaint paint;
paint.setImageFilter(imageFilter.get());
SkPictureRecorder outerRecorder;
SkCanvas* outerCanvas = outerRecorder.beginRecording(1, 1, &factory, 0);
SkPaint redPaintWithFilter;
redPaintWithFilter.setColor(SK_ColorRED);
redPaintWithFilter.setImageFilter(imageFilter.get());
outerCanvas->drawRect(SkRect::Make(SkIRect::MakeWH(1, 1)), redPaintWithFilter);
SkAutoTUnref<SkPicture> outerPicture(outerRecorder.endRecording());
SkBitmap bitmap;
bitmap.allocN32Pixels(1, 1);
SkBitmapDevice device(bitmap);
SkCanvas canvas(&device);
// The result here should be green, since the filter replaces the primitive's red interior.
canvas.clear(0x0);
canvas.drawPicture(outerPicture);
uint32_t pixel = *bitmap.getAddr32(0, 0);
REPORTER_ASSERT(reporter, pixel == SK_ColorGREEN);
// Check that, for now, SkPictureImageFilter does not serialize or
// deserialize its contained picture when the filter is serialized
// cross-process. Do this by "laundering" it through SkValidatingReadBuffer.
SkAutoTUnref<SkData> data(SkValidatingSerializeFlattenable(imageFilter.get()));
SkAutoTUnref<SkFlattenable> flattenable(SkValidatingDeserializeFlattenable(
data->data(), data->size(), SkImageFilter::GetFlattenableType()));
SkImageFilter* unflattenedFilter = static_cast<SkImageFilter*>(flattenable.get());
redPaintWithFilter.setImageFilter(unflattenedFilter);
SkPictureRecorder crossProcessRecorder;
SkCanvas* crossProcessCanvas = crossProcessRecorder.beginRecording(1, 1, &factory, 0);
crossProcessCanvas->drawRect(SkRect::Make(SkIRect::MakeWH(1, 1)), redPaintWithFilter);
SkAutoTUnref<SkPicture> crossProcessPicture(crossProcessRecorder.endRecording());
canvas.clear(0x0);
canvas.drawPicture(crossProcessPicture);
pixel = *bitmap.getAddr32(0, 0);
// The result here should not be green, since the filter draws nothing.
REPORTER_ASSERT(reporter, pixel != SK_ColorGREEN);
}
DEF_TEST(ImageFilterEmptySaveLayer, 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