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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
static void test_bitmap_equality(skiatest::Reporter* reporter, SkBitmap& bm1, SkBitmap& bm2) {
REPORTER_ASSERT(reporter, bm1.getSize() == bm2.getSize());
REPORTER_ASSERT(reporter, 0 == memcmp(bm1.getPixels(), bm2.getPixels(), bm1.getSize()));
}
static void paint_source(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);
}
static void run_shader_test(skiatest::Reporter* reporter, SkSurface* sourceSurface,
SkSurface* destinationSurface, SkImageInfo& info) {
paint_source(sourceSurface);
sk_sp<SkImage> sourceImage(sourceSurface->makeImageSnapshot());
sk_sp<SkShader> sourceShader = sourceImage->makeShader(
SkShader::kRepeat_TileMode,
SkShader::kRepeat_TileMode);
SkPaint paint;
paint.setShader(sourceShader);
SkCanvas* destinationCanvas = destinationSurface->getCanvas();
destinationCanvas->clear(SK_ColorTRANSPARENT);
destinationCanvas->drawPaint(paint);
SkBitmap bmOrig;
bmOrig.allocN32Pixels(info.width(), info.height());
sourceSurface->getCanvas()->readPixels(bmOrig, 0, 0);
SkBitmap bm;
bm.allocN32Pixels(info.width(), info.height());
destinationCanvas->readPixels(bm, 0, 0);
test_bitmap_equality(reporter, bmOrig, bm);
// Test with a translated shader
SkMatrix matrix;
matrix.setTranslate(SkIntToScalar(-1), SkIntToScalar(0));
sk_sp<SkShader> sourceShaderTranslated = sourceImage->makeShader(
SkShader::kRepeat_TileMode,
SkShader::kRepeat_TileMode,
&matrix);
destinationCanvas->clear(SK_ColorTRANSPARENT);
SkPaint paintTranslated;
paintTranslated.setShader(sourceShaderTranslated);
destinationCanvas->drawPaint(paintTranslated);
SkBitmap bmt;
bmt.allocN32Pixels(info.width(), info.height());
destinationCanvas->readPixels(bmt, 0, 0);
// Test correctness
{
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);
auto sourceSurface(SkSurface::MakeRaster(info));
auto destinationSurface(SkSurface::MakeRaster(info));
run_shader_test(reporter, sourceSurface.get(), destinationSurface.get(), info);
}
#if SK_SUPPORT_GPU
static void gpu_to_gpu(skiatest::Reporter* reporter, GrContext* context) {
SkImageInfo info = SkImageInfo::MakeN32Premul(5, 5);
auto sourceSurface(SkSurface::MakeRenderTarget(context, SkBudgeted::kNo, info));
auto destinationSurface(SkSurface::MakeRenderTarget(context, SkBudgeted::kNo, info));
run_shader_test(reporter, sourceSurface.get(), destinationSurface.get(), info);
}
static void gpu_to_raster(skiatest::Reporter* reporter, GrContext* context) {
SkImageInfo info = SkImageInfo::MakeN32Premul(5, 5);
auto sourceSurface(SkSurface::MakeRenderTarget(context, SkBudgeted::kNo, info));
auto destinationSurface(SkSurface::MakeRaster(info));
run_shader_test(reporter, sourceSurface.get(), destinationSurface.get(), info);
}
static void raster_to_gpu(skiatest::Reporter* reporter, GrContext* context) {
SkImageInfo info = SkImageInfo::MakeN32Premul(5, 5);
auto sourceSurface(SkSurface::MakeRaster(info));
auto destinationSurface(SkSurface::MakeRenderTarget(context, SkBudgeted::kNo, info));
run_shader_test(reporter, sourceSurface.get(), destinationSurface.get(), info);
}
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageNewShader_GPU, reporter, ctxInfo) {
// GPU -> GPU
gpu_to_gpu(reporter, ctxInfo.grContext());
// GPU -> RASTER
gpu_to_raster(reporter, ctxInfo.grContext());
// RASTER -> GPU
raster_to_gpu(reporter, ctxInfo.grContext());
}
#endif
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