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/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkCanvas.h"
#include "SkImage.h"
#include "SkShader.h"
#include "SkSurface.h"
#include "SkTypes.h"
#include "Test.h"
#if SK_SUPPORT_GPU
#include "GrContext.h"
#endif
void testBitmapEquality(skiatest::Reporter* reporter, SkBitmap& bm1, SkBitmap& bm2) {
SkAutoLockPixels lockBm1(bm1);
SkAutoLockPixels lockBm2(bm2);
REPORTER_ASSERT(reporter, bm1.getSize() == bm2.getSize());
REPORTER_ASSERT(reporter, 0 == memcmp(bm1.getPixels(), bm2.getPixels(), bm1.getSize()));
}
void paintSource(SkSurface* sourceSurface) {
SkCanvas* sourceCanvas = sourceSurface->getCanvas();
sourceCanvas->clear(0xFFDEDEDE);
SkPaint paintColor;
paintColor.setColor(0xFFFF0000);
paintColor.setStyle(SkPaint::kFill_Style);
SkRect rect = SkRect::MakeXYWH(
SkIntToScalar(1),
SkIntToScalar(0),
SkIntToScalar(1),
SkIntToScalar(sourceSurface->height()));
sourceCanvas->drawRect(rect, paintColor);
}
void runShaderTest(skiatest::Reporter* reporter, SkSurface* sourceSurface, SkSurface* destinationSurface, SkImageInfo& info) {
paintSource(sourceSurface);
SkAutoTUnref<SkImage> sourceImage(sourceSurface->newImageSnapshot());
SkAutoTUnref<SkShader> sourceShader(sourceImage->newShader(
SkShader::kRepeat_TileMode,
SkShader::kRepeat_TileMode));
SkPaint paint;
paint.setShader(sourceShader);
SkCanvas* destinationCanvas = destinationSurface->getCanvas();
destinationCanvas->clear(SK_ColorTRANSPARENT);
destinationCanvas->drawPaint(paint);
SkIRect rect = info.bounds();
SkBitmap bmOrig;
sourceSurface->getCanvas()->readPixels(rect, &bmOrig);
SkBitmap bm;
destinationCanvas->readPixels(rect, &bm);
testBitmapEquality(reporter, bmOrig, bm);
// Test with a translated shader
SkMatrix matrix;
matrix.setTranslate(SkIntToScalar(-1), SkIntToScalar(0));
SkAutoTUnref<SkShader> sourceShaderTranslated(sourceImage->newShader(
SkShader::kRepeat_TileMode,
SkShader::kRepeat_TileMode,
&matrix));
destinationCanvas->clear(SK_ColorTRANSPARENT);
SkPaint paintTranslated;
paintTranslated.setShader(sourceShaderTranslated);
destinationCanvas->drawPaint(paintTranslated);
SkBitmap bmt;
destinationCanvas->readPixels(rect, &bmt);
// Test correctness
{
SkAutoLockPixels lockBm(bmt);
for (int y = 0; y < info.height(); y++) {
REPORTER_ASSERT(reporter, 0xFFFF0000 == bmt.getColor(0, y));
for (int x = 1; x < info.width(); x++) {
REPORTER_ASSERT(reporter, 0xFFDEDEDE == bmt.getColor(x, y));
}
}
}
}
DEF_TEST(ImageNewShader, reporter) {
SkImageInfo info = SkImageInfo::MakeN32Premul(5, 5);
SkAutoTUnref<SkSurface> sourceSurface(SkSurface::NewRaster(info));
SkAutoTUnref<SkSurface> destinationSurface(SkSurface::NewRaster(info));
runShaderTest(reporter, sourceSurface.get(), destinationSurface.get(), info);
}
#if SK_SUPPORT_GPU
void gpuToGpu(skiatest::Reporter* reporter, GrContext* context) {
SkImageInfo info = SkImageInfo::MakeN32Premul(5, 5);
SkAutoTUnref<SkSurface> sourceSurface(
SkSurface::NewRenderTarget(context, SkSurface::kNo_Budgeted, info));
SkAutoTUnref<SkSurface> destinationSurface(
SkSurface::NewRenderTarget(context, SkSurface::kNo_Budgeted, info));
runShaderTest(reporter, sourceSurface.get(), destinationSurface.get(), info);
}
void gpuToRaster(skiatest::Reporter* reporter, GrContext* context) {
SkImageInfo info = SkImageInfo::MakeN32Premul(5, 5);
SkAutoTUnref<SkSurface> sourceSurface(SkSurface::NewRenderTarget(context,
SkSurface::kNo_Budgeted, info));
SkAutoTUnref<SkSurface> destinationSurface(SkSurface::NewRaster(info));
runShaderTest(reporter, sourceSurface.get(), destinationSurface.get(), info);
}
void rasterToGpu(skiatest::Reporter* reporter, GrContext* context) {
SkImageInfo info = SkImageInfo::MakeN32Premul(5, 5);
SkAutoTUnref<SkSurface> sourceSurface(SkSurface::NewRaster(info));
SkAutoTUnref<SkSurface> destinationSurface(SkSurface::NewRenderTarget(context,
SkSurface::kNo_Budgeted, info));
runShaderTest(reporter, sourceSurface.get(), destinationSurface.get(), info);
}
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageNewShader_GPU, reporter, context) {
// GPU -> GPU
gpuToGpu(reporter, context);
// GPU -> RASTER
gpuToRaster(reporter, context);
// RASTER -> GPU
rasterToGpu(reporter, context);
}
#endif
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