tests/SpecialImageTest.cpp - platform/external/skia - Gitiles

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file
  */

 #include "SkAutoPixmapStorage.h"
 #include "SkBitmap.h"
 #include "SkCanvas.h"
 #include "SkImage.h"
 #include "SkPixmap.h"
 #include "SkSpecialImage.h"
 #include "SkSpecialSurface.h"
 #include "SkSurface.h"
 #include "Test.h"

 #if SK_SUPPORT_GPU
 #include "GrContext.h"
 #endif


 // This test creates backing resources exactly sized to [kFullSize x kFullSize].
 // It then wraps them in an SkSpecialImage with only the center (red) region being active.
 // It then draws the SkSpecialImage to a full sized (all blue) canvas and checks that none
 // of the inactive (green) region leaked out.

 static const int kSmallerSize = 10;
 static const int kPad = 3;
 static const int kFullSize = kSmallerSize + 2 * kPad;

 // Create a bitmap with red in the center and green around it
 static SkBitmap create_bm() {
     SkBitmap bm;
     bm.allocN32Pixels(kFullSize, kFullSize, true);

     SkCanvas temp(bm);

     temp.clear(SK_ColorGREEN);
     SkPaint p;
     p.setColor(SK_ColorRED);
     p.setAntiAlias(false);

     temp.drawRect(SkRect::MakeXYWH(SkIntToScalar(kPad), SkIntToScalar(kPad),
                                    SkIntToScalar(kSmallerSize), SkIntToScalar(kSmallerSize)),
                   p);

     return bm;
 }

 // Basic test of the SkSpecialImage public API (e.g., peekTexture, peekPixels & draw)
 static void test_image(const sk_sp<SkSpecialImage>& img, skiatest::Reporter* reporter,
                        GrContext* context, bool peekTextureSucceeds,
                        int offset, int size) {
     const SkIRect subset = img->subset();
     REPORTER_ASSERT(reporter, offset == subset.left());
     REPORTER_ASSERT(reporter, offset == subset.top());
     REPORTER_ASSERT(reporter, kSmallerSize == subset.width());
     REPORTER_ASSERT(reporter, kSmallerSize == subset.height());

     //--------------
     // Test that peekTexture reports the correct backing type
     REPORTER_ASSERT(reporter, peekTextureSucceeds == img->isTextureBacked());

 #if SK_SUPPORT_GPU
     //--------------
     // Test getTextureAsRef - as long as there is a context this should succeed
     if (context) {
         sk_sp<GrTexture> texture(img->asTextureRef(context));
         REPORTER_ASSERT(reporter, texture);
     }
 #endif

     //--------------
     // Test getROPixels - this should always succeed regardless of backing store
     SkBitmap bitmap;
     REPORTER_ASSERT(reporter, img->getROPixels(&bitmap));
     if (context) {
         REPORTER_ASSERT(reporter, kSmallerSize == bitmap.width());
         REPORTER_ASSERT(reporter, kSmallerSize == bitmap.height());
     } else {
         REPORTER_ASSERT(reporter, size == bitmap.width());
         REPORTER_ASSERT(reporter, size == bitmap.height());
     }

     //--------------
     // Test that draw restricts itself to the subset
     SkImageFilter::OutputProperties outProps(img->getColorSpace());
     sk_sp<SkSpecialSurface> surf(img->makeSurface(outProps, SkISize::Make(kFullSize, kFullSize),
                                                   kOpaque_SkAlphaType));

     SkCanvas* canvas = surf->getCanvas();

     canvas->clear(SK_ColorBLUE);
     img->draw(canvas, SkIntToScalar(kPad), SkIntToScalar(kPad), nullptr);

     SkBitmap bm;
     bm.allocN32Pixels(kFullSize, kFullSize, true);

     bool result = canvas->readPixels(bm.info(), bm.getPixels(), bm.rowBytes(), 0, 0);
     SkASSERT_RELEASE(result);

     // Only the center (red) portion should've been drawn into the canvas
     REPORTER_ASSERT(reporter, SK_ColorBLUE == bm.getColor(kPad-1, kPad-1));
     REPORTER_ASSERT(reporter, SK_ColorRED  == bm.getColor(kPad, kPad));
     REPORTER_ASSERT(reporter, SK_ColorRED  == bm.getColor(kSmallerSize+kPad-1,
                                                           kSmallerSize+kPad-1));
     REPORTER_ASSERT(reporter, SK_ColorBLUE == bm.getColor(kSmallerSize+kPad,
                                                           kSmallerSize+kPad));

     //--------------
     // Test that makeTightSubset & makeTightSurface return appropriately sized objects
     // of the correct backing type
     SkIRect newSubset = SkIRect::MakeWH(subset.width(), subset.height());
     {
         sk_sp<SkImage> tightImg(img->makeTightSubset(newSubset));

         REPORTER_ASSERT(reporter, tightImg->width() == subset.width());
         REPORTER_ASSERT(reporter, tightImg->height() == subset.height());
         REPORTER_ASSERT(reporter, peekTextureSucceeds == !!tightImg->getTexture());
         SkPixmap tmpPixmap;
         REPORTER_ASSERT(reporter, peekTextureSucceeds != !!tightImg->peekPixels(&tmpPixmap));
     }
     {
         SkImageFilter::OutputProperties outProps(img->getColorSpace());
         sk_sp<SkSurface> tightSurf(img->makeTightSurface(outProps, subset.size()));

         REPORTER_ASSERT(reporter, tightSurf->width() == subset.width());
         REPORTER_ASSERT(reporter, tightSurf->height() == subset.height());
         REPORTER_ASSERT(reporter, peekTextureSucceeds ==
                      !!tightSurf->getTextureHandle(SkSurface::kDiscardWrite_BackendHandleAccess));
         SkPixmap tmpPixmap;
         REPORTER_ASSERT(reporter, peekTextureSucceeds != !!tightSurf->peekPixels(&tmpPixmap));
     }
 }

 DEF_TEST(SpecialImage_Raster, reporter) {
     SkBitmap bm = create_bm();

     sk_sp<SkSpecialImage> fullSImage(SkSpecialImage::MakeFromRaster(
                                                             SkIRect::MakeWH(kFullSize, kFullSize),
                                                             bm));

     const SkIRect& subset = SkIRect::MakeXYWH(kPad, kPad, kSmallerSize, kSmallerSize);

     {
         sk_sp<SkSpecialImage> subSImg1(SkSpecialImage::MakeFromRaster(subset, bm));
         test_image(subSImg1, reporter, nullptr, false, kPad, kFullSize);
     }

     {
         sk_sp<SkSpecialImage> subSImg2(fullSImage->makeSubset(subset));
         test_image(subSImg2, reporter, nullptr, false, 0, kSmallerSize);
     }
 }

 DEF_TEST(SpecialImage_Image, reporter) {
     SkBitmap bm = create_bm();

     sk_sp<SkImage> fullImage(SkImage::MakeFromBitmap(bm));

     sk_sp<SkSpecialImage> fullSImage(SkSpecialImage::MakeFromImage(
                                                             SkIRect::MakeWH(kFullSize, kFullSize),
                                                             fullImage));

     const SkIRect& subset = SkIRect::MakeXYWH(kPad, kPad, kSmallerSize, kSmallerSize);

     {
         sk_sp<SkSpecialImage> subSImg1(SkSpecialImage::MakeFromImage(subset, fullImage));
         test_image(subSImg1, reporter, nullptr, false, kPad, kFullSize);
     }

     {
         sk_sp<SkSpecialImage> subSImg2(fullSImage->makeSubset(subset));
         test_image(subSImg2, reporter, nullptr, false, 0, kSmallerSize);
     }
 }

 #if SK_SUPPORT_GPU

 static void test_texture_backed(skiatest::Reporter* reporter,
                                 const sk_sp<SkSpecialImage>& orig,
                                 const sk_sp<SkSpecialImage>& gpuBacked) {
     REPORTER_ASSERT(reporter, gpuBacked);
     REPORTER_ASSERT(reporter, gpuBacked->isTextureBacked());
     REPORTER_ASSERT(reporter, gpuBacked->uniqueID() == orig->uniqueID());
     REPORTER_ASSERT(reporter, gpuBacked->subset().width() == orig->subset().width() &&
                               gpuBacked->subset().height() == orig->subset().height());
     REPORTER_ASSERT(reporter, gpuBacked->getColorSpace() == orig->getColorSpace());
 }

 // Test out the SkSpecialImage::makeTextureImage entry point
 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(SpecialImage_MakeTexture, reporter, ctxInfo) {
     GrContext* context = ctxInfo.grContext();
     SkBitmap bm = create_bm();

     const SkIRect& subset = SkIRect::MakeXYWH(kPad, kPad, kSmallerSize, kSmallerSize);

     {
         // raster
         sk_sp<SkSpecialImage> rasterImage(SkSpecialImage::MakeFromRaster(
                                                                         SkIRect::MakeWH(kFullSize,
                                                                                         kFullSize),
                                                                         bm));

         {
             sk_sp<SkSpecialImage> fromRaster(rasterImage->makeTextureImage(context));
             test_texture_backed(reporter, rasterImage, fromRaster);
         }

         {
             sk_sp<SkSpecialImage> subRasterImage(rasterImage->makeSubset(subset));

             sk_sp<SkSpecialImage> fromSubRaster(subRasterImage->makeTextureImage(context));
             test_texture_backed(reporter, subRasterImage, fromSubRaster);
         }
     }

     {
         // gpu
         GrSurfaceDesc desc;
         desc.fConfig = kSkia8888_GrPixelConfig;
         desc.fFlags = kNone_GrSurfaceFlags;
         desc.fWidth = kFullSize;
         desc.fHeight = kFullSize;

         sk_sp<GrTexture> texture(context->textureProvider()->createTexture(desc,
                                                                            SkBudgeted::kNo,
                                                                            bm.getPixels(),
                                                                            0));
         if (!texture) {
             return;
         }

         sk_sp<SkSpecialImage> gpuImage(SkSpecialImage::MakeFromGpu(
                                                                 SkIRect::MakeWH(kFullSize,
                                                                                 kFullSize),
                                                                 kNeedNewImageUniqueID_SpecialImage,
                                                                 std::move(texture), nullptr));

         {
             sk_sp<SkSpecialImage> fromGPU(gpuImage->makeTextureImage(context));
             test_texture_backed(reporter, gpuImage, fromGPU);
         }

         {
             sk_sp<SkSpecialImage> subGPUImage(gpuImage->makeSubset(subset));

             sk_sp<SkSpecialImage> fromSubGPU(subGPUImage->makeTextureImage(context));
             test_texture_backed(reporter, subGPUImage, fromSubGPU);
         }
     }
 }

 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(SpecialImage_Gpu, reporter, ctxInfo) {
     GrContext* context = ctxInfo.grContext();
     SkBitmap bm = create_bm();

     GrSurfaceDesc desc;
     desc.fConfig = kSkia8888_GrPixelConfig;
     desc.fFlags  = kNone_GrSurfaceFlags;
     desc.fWidth  = kFullSize;
     desc.fHeight = kFullSize;

     sk_sp<GrTexture> texture(context->textureProvider()->createTexture(desc,
                                                                        SkBudgeted::kNo,
                                                                        bm.getPixels(), 0));
     if (!texture) {
         return;
     }

     sk_sp<SkSpecialImage> fullSImg(SkSpecialImage::MakeFromGpu(
                                                             SkIRect::MakeWH(kFullSize, kFullSize),
                                                             kNeedNewImageUniqueID_SpecialImage,
                                                             texture, nullptr));

     const SkIRect& subset = SkIRect::MakeXYWH(kPad, kPad, kSmallerSize, kSmallerSize);

     {
         sk_sp<SkSpecialImage> subSImg1(SkSpecialImage::MakeFromGpu(
                                                                subset,
                                                                kNeedNewImageUniqueID_SpecialImage,
                                                                texture, nullptr));
         test_image(subSImg1, reporter, context, true, kPad, kFullSize);
     }

     {
         sk_sp<SkSpecialImage> subSImg2(fullSImg->makeSubset(subset));
         test_image(subSImg2, reporter, context, true, kPad, kFullSize);
     }
 }

 #endif
	/*
	* Copyright 2016 Google Inc.
	*
	* Use of this source code is governed by a BSD-style license that can be
	* found in the LICENSE file
	*/

	#include "SkAutoPixmapStorage.h"
	#include "SkBitmap.h"
	#include "SkCanvas.h"
	#include "SkImage.h"
	#include "SkPixmap.h"
	#include "SkSpecialImage.h"
	#include "SkSpecialSurface.h"
	#include "SkSurface.h"
	#include "Test.h"

	#if SK_SUPPORT_GPU
	#include "GrContext.h"
	#endif


	// This test creates backing resources exactly sized to [kFullSize x kFullSize].
	// It then wraps them in an SkSpecialImage with only the center (red) region being active.
	// It then draws the SkSpecialImage to a full sized (all blue) canvas and checks that none
	// of the inactive (green) region leaked out.

	static const int kSmallerSize = 10;
	static const int kPad = 3;
	static const int kFullSize = kSmallerSize + 2 * kPad;

	// Create a bitmap with red in the center and green around it
	static SkBitmap create_bm() {
	SkBitmap bm;
	bm.allocN32Pixels(kFullSize, kFullSize, true);

	SkCanvas temp(bm);

	temp.clear(SK_ColorGREEN);
	SkPaint p;
	p.setColor(SK_ColorRED);
	p.setAntiAlias(false);

	temp.drawRect(SkRect::MakeXYWH(SkIntToScalar(kPad), SkIntToScalar(kPad),
	SkIntToScalar(kSmallerSize), SkIntToScalar(kSmallerSize)),
	p);

	return bm;
	}

	// Basic test of the SkSpecialImage public API (e.g., peekTexture, peekPixels & draw)
	static void test_image(const sk_sp<SkSpecialImage>& img, skiatest::Reporter* reporter,
	GrContext* context, bool peekTextureSucceeds,
	int offset, int size) {
	const SkIRect subset = img->subset();
	REPORTER_ASSERT(reporter, offset == subset.left());
	REPORTER_ASSERT(reporter, offset == subset.top());
	REPORTER_ASSERT(reporter, kSmallerSize == subset.width());
	REPORTER_ASSERT(reporter, kSmallerSize == subset.height());

	//--------------
	// Test that peekTexture reports the correct backing type
	REPORTER_ASSERT(reporter, peekTextureSucceeds == img->isTextureBacked());

	#if SK_SUPPORT_GPU
	//--------------
	// Test getTextureAsRef - as long as there is a context this should succeed
	if (context) {
	sk_sp<GrTexture> texture(img->asTextureRef(context));
	REPORTER_ASSERT(reporter, texture);
	}
	#endif

	//--------------
	// Test getROPixels - this should always succeed regardless of backing store
	SkBitmap bitmap;
	REPORTER_ASSERT(reporter, img->getROPixels(&bitmap));
	if (context) {
	REPORTER_ASSERT(reporter, kSmallerSize == bitmap.width());
	REPORTER_ASSERT(reporter, kSmallerSize == bitmap.height());
	} else {
	REPORTER_ASSERT(reporter, size == bitmap.width());
	REPORTER_ASSERT(reporter, size == bitmap.height());
	}

	//--------------
	// Test that draw restricts itself to the subset
	SkImageFilter::OutputProperties outProps(img->getColorSpace());
	sk_sp<SkSpecialSurface> surf(img->makeSurface(outProps, SkISize::Make(kFullSize, kFullSize),
	kOpaque_SkAlphaType));

	SkCanvas* canvas = surf->getCanvas();

	canvas->clear(SK_ColorBLUE);
	img->draw(canvas, SkIntToScalar(kPad), SkIntToScalar(kPad), nullptr);

	SkBitmap bm;
	bm.allocN32Pixels(kFullSize, kFullSize, true);

	bool result = canvas->readPixels(bm.info(), bm.getPixels(), bm.rowBytes(), 0, 0);
	SkASSERT_RELEASE(result);

	// Only the center (red) portion should've been drawn into the canvas
	REPORTER_ASSERT(reporter, SK_ColorBLUE == bm.getColor(kPad-1, kPad-1));
	REPORTER_ASSERT(reporter, SK_ColorRED == bm.getColor(kPad, kPad));
	REPORTER_ASSERT(reporter, SK_ColorRED == bm.getColor(kSmallerSize+kPad-1,
	kSmallerSize+kPad-1));
	REPORTER_ASSERT(reporter, SK_ColorBLUE == bm.getColor(kSmallerSize+kPad,
	kSmallerSize+kPad));

	//--------------
	// Test that makeTightSubset & makeTightSurface return appropriately sized objects
	// of the correct backing type
	SkIRect newSubset = SkIRect::MakeWH(subset.width(), subset.height());
	{
	sk_sp<SkImage> tightImg(img->makeTightSubset(newSubset));

	REPORTER_ASSERT(reporter, tightImg->width() == subset.width());
	REPORTER_ASSERT(reporter, tightImg->height() == subset.height());
	REPORTER_ASSERT(reporter, peekTextureSucceeds == !!tightImg->getTexture());
	SkPixmap tmpPixmap;
	REPORTER_ASSERT(reporter, peekTextureSucceeds != !!tightImg->peekPixels(&tmpPixmap));
	}
	{
	SkImageFilter::OutputProperties outProps(img->getColorSpace());
	sk_sp<SkSurface> tightSurf(img->makeTightSurface(outProps, subset.size()));

	REPORTER_ASSERT(reporter, tightSurf->width() == subset.width());
	REPORTER_ASSERT(reporter, tightSurf->height() == subset.height());
	REPORTER_ASSERT(reporter, peekTextureSucceeds ==
	!!tightSurf->getTextureHandle(SkSurface::kDiscardWrite_BackendHandleAccess));
	SkPixmap tmpPixmap;
	REPORTER_ASSERT(reporter, peekTextureSucceeds != !!tightSurf->peekPixels(&tmpPixmap));
	}
	}

	DEF_TEST(SpecialImage_Raster, reporter) {
	SkBitmap bm = create_bm();

	sk_sp<SkSpecialImage> fullSImage(SkSpecialImage::MakeFromRaster(
	SkIRect::MakeWH(kFullSize, kFullSize),
	bm));

	const SkIRect& subset = SkIRect::MakeXYWH(kPad, kPad, kSmallerSize, kSmallerSize);

	{
	sk_sp<SkSpecialImage> subSImg1(SkSpecialImage::MakeFromRaster(subset, bm));
	test_image(subSImg1, reporter, nullptr, false, kPad, kFullSize);
	}

	{
	sk_sp<SkSpecialImage> subSImg2(fullSImage->makeSubset(subset));
	test_image(subSImg2, reporter, nullptr, false, 0, kSmallerSize);
	}
	}

	DEF_TEST(SpecialImage_Image, reporter) {
	SkBitmap bm = create_bm();

	sk_sp<SkImage> fullImage(SkImage::MakeFromBitmap(bm));

	sk_sp<SkSpecialImage> fullSImage(SkSpecialImage::MakeFromImage(
	SkIRect::MakeWH(kFullSize, kFullSize),
	fullImage));

	const SkIRect& subset = SkIRect::MakeXYWH(kPad, kPad, kSmallerSize, kSmallerSize);

	{
	sk_sp<SkSpecialImage> subSImg1(SkSpecialImage::MakeFromImage(subset, fullImage));
	test_image(subSImg1, reporter, nullptr, false, kPad, kFullSize);
	}

	{
	sk_sp<SkSpecialImage> subSImg2(fullSImage->makeSubset(subset));
	test_image(subSImg2, reporter, nullptr, false, 0, kSmallerSize);
	}
	}

	#if SK_SUPPORT_GPU

	static void test_texture_backed(skiatest::Reporter* reporter,
	const sk_sp<SkSpecialImage>& orig,
	const sk_sp<SkSpecialImage>& gpuBacked) {
	REPORTER_ASSERT(reporter, gpuBacked);
	REPORTER_ASSERT(reporter, gpuBacked->isTextureBacked());
	REPORTER_ASSERT(reporter, gpuBacked->uniqueID() == orig->uniqueID());
	REPORTER_ASSERT(reporter, gpuBacked->subset().width() == orig->subset().width() &&
	gpuBacked->subset().height() == orig->subset().height());
	REPORTER_ASSERT(reporter, gpuBacked->getColorSpace() == orig->getColorSpace());
	}

	// Test out the SkSpecialImage::makeTextureImage entry point
	DEF_GPUTEST_FOR_RENDERING_CONTEXTS(SpecialImage_MakeTexture, reporter, ctxInfo) {
	GrContext* context = ctxInfo.grContext();
	SkBitmap bm = create_bm();

	const SkIRect& subset = SkIRect::MakeXYWH(kPad, kPad, kSmallerSize, kSmallerSize);

	{
	// raster
	sk_sp<SkSpecialImage> rasterImage(SkSpecialImage::MakeFromRaster(
	SkIRect::MakeWH(kFullSize,
	kFullSize),
	bm));

	{
	sk_sp<SkSpecialImage> fromRaster(rasterImage->makeTextureImage(context));
	test_texture_backed(reporter, rasterImage, fromRaster);
	}

	{
	sk_sp<SkSpecialImage> subRasterImage(rasterImage->makeSubset(subset));

	sk_sp<SkSpecialImage> fromSubRaster(subRasterImage->makeTextureImage(context));
	test_texture_backed(reporter, subRasterImage, fromSubRaster);
	}
	}

	{
	// gpu
	GrSurfaceDesc desc;
	desc.fConfig = kSkia8888_GrPixelConfig;
	desc.fFlags = kNone_GrSurfaceFlags;
	desc.fWidth = kFullSize;
	desc.fHeight = kFullSize;

	sk_sp<GrTexture> texture(context->textureProvider()->createTexture(desc,
	SkBudgeted::kNo,
	bm.getPixels(),
	0));
	if (!texture) {
	return;
	}

	sk_sp<SkSpecialImage> gpuImage(SkSpecialImage::MakeFromGpu(
	SkIRect::MakeWH(kFullSize,
	kFullSize),
	kNeedNewImageUniqueID_SpecialImage,
	std::move(texture), nullptr));

	{
	sk_sp<SkSpecialImage> fromGPU(gpuImage->makeTextureImage(context));
	test_texture_backed(reporter, gpuImage, fromGPU);
	}

	{
	sk_sp<SkSpecialImage> subGPUImage(gpuImage->makeSubset(subset));

	sk_sp<SkSpecialImage> fromSubGPU(subGPUImage->makeTextureImage(context));
	test_texture_backed(reporter, subGPUImage, fromSubGPU);
	}
	}
	}

	DEF_GPUTEST_FOR_RENDERING_CONTEXTS(SpecialImage_Gpu, reporter, ctxInfo) {
	GrContext* context = ctxInfo.grContext();
	SkBitmap bm = create_bm();

	GrSurfaceDesc desc;
	desc.fConfig = kSkia8888_GrPixelConfig;
	desc.fFlags = kNone_GrSurfaceFlags;
	desc.fWidth = kFullSize;
	desc.fHeight = kFullSize;

	sk_sp<GrTexture> texture(context->textureProvider()->createTexture(desc,
	SkBudgeted::kNo,
	bm.getPixels(), 0));
	if (!texture) {
	return;
	}

	sk_sp<SkSpecialImage> fullSImg(SkSpecialImage::MakeFromGpu(
	SkIRect::MakeWH(kFullSize, kFullSize),
	kNeedNewImageUniqueID_SpecialImage,
	texture, nullptr));

	const SkIRect& subset = SkIRect::MakeXYWH(kPad, kPad, kSmallerSize, kSmallerSize);

	{
	sk_sp<SkSpecialImage> subSImg1(SkSpecialImage::MakeFromGpu(
	subset,
	kNeedNewImageUniqueID_SpecialImage,
	texture, nullptr));
	test_image(subSImg1, reporter, context, true, kPad, kFullSize);
	}

	{
	sk_sp<SkSpecialImage> subSImg2(fullSImg->makeSubset(subset));
	test_image(subSImg2, reporter, context, true, kPad, kFullSize);
	}
	}

	#endif