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


 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "Test.h"
 #include "SkBitmap.h"
 #include "SkCanvas.h"
 #include "SkColorPriv.h"
 #include "SkGradientShader.h"
 #include "SkRect.h"

 // these are in the same order as the SkBitmap::Config enum
 static const char* gConfigName[] = {
     "None", "A1", "A8", "Index8", "565", "4444", "8888", "RLE_Index8"
 };

 /** Returns -1 on success, else the x coord of the first bad pixel, return its
     value in bad
  */
 typedef int (*Proc)(const void*, int width, uint32_t expected, uint32_t* bad);

 static int proc_32(const void* ptr, int w, uint32_t expected, uint32_t* bad) {
     const SkPMColor* addr = static_cast<const SkPMColor*>(ptr);
     for (int x = 0; x < w; x++) {
         if (addr[x] != expected) {
             *bad = addr[x];
             return x;
         }
     }
     return -1;
 }

 static int proc_16(const void* ptr, int w, uint32_t expected, uint32_t* bad) {
     const uint16_t* addr = static_cast<const uint16_t*>(ptr);
     for (int x = 0; x < w; x++) {
         if (addr[x] != expected) {
             *bad = addr[x];
             return x;
         }
     }
     return -1;
 }

 static int proc_8(const void* ptr, int w, uint32_t expected, uint32_t* bad) {
     const SkPMColor* addr = static_cast<const SkPMColor*>(ptr);
     for (int x = 0; x < w; x++) {
         if (SkGetPackedA32(addr[x]) != expected) {
             *bad = SkGetPackedA32(addr[x]);
             return x;
         }
     }
     return -1;
 }

 static int proc_bad(const void*, int, uint32_t, uint32_t* bad) {
     *bad = 0;
     return 0;
 }

 static Proc find_proc(const SkBitmap& bm, SkPMColor expect32, uint16_t expect16,
                       uint8_t expect8, uint32_t* expect) {
     switch (bm.config()) {
         case SkBitmap::kARGB_8888_Config:
             *expect = expect32;
             return proc_32;
         case SkBitmap::kARGB_4444_Config:
         case SkBitmap::kRGB_565_Config:
             *expect = expect16;
             return proc_16;
         case SkBitmap::kA8_Config:
             *expect = expect8;
             return proc_8;
         default:
             *expect = 0;
             return proc_bad;
     }
 }

 static bool check_color(const SkBitmap& bm, SkPMColor expect32,
                         uint16_t expect16, uint8_t expect8,
                         skiatest::Reporter* reporter) {
     uint32_t expect;
     Proc proc = find_proc(bm, expect32, expect16, expect8, &expect);
     for (int y = 0; y < bm.height(); y++) {
         uint32_t bad;
         int x = proc(bm.getAddr(0, y), bm.width(), expect, &bad);
         if (x >= 0) {
             SkString str;
             str.printf("BlitRow config=%s [%d %d] expected %x got %x",
                        gConfigName[bm.config()], x, y, expect, bad);
             reporter->reportFailed(str);
             return false;
         }
     }
     return true;
 }

 // Make sure our blits always map src==0 to a noop, and src==FF to full opaque
 static void test_00_FF(skiatest::Reporter* reporter) {
     static const int W = 256;

     static const SkBitmap::Config gDstConfig[] = {
         SkBitmap::kARGB_8888_Config,
         SkBitmap::kRGB_565_Config,
 //        SkBitmap::kARGB_4444_Config,
 //        SkBitmap::kA8_Config,
     };

     static const struct {
         SkColor     fSrc;
         SkColor     fDst;
         SkPMColor   fResult32;
         uint16_t    fResult16;
         uint8_t     fResult8;
     } gSrcRec[] = {
         { 0,            0,          0,                                    0,      0 },
         { 0,            0xFFFFFFFF, SkPackARGB32(0xFF, 0xFF, 0xFF, 0xFF), 0xFFFF, 0xFF },
         { 0xFFFFFFFF,   0,          SkPackARGB32(0xFF, 0xFF, 0xFF, 0xFF), 0xFFFF, 0xFF },
         { 0xFFFFFFFF,   0xFFFFFFFF, SkPackARGB32(0xFF, 0xFF, 0xFF, 0xFF), 0xFFFF, 0xFF },
     };

     SkPaint paint;

     SkBitmap srcBM;
     srcBM.setConfig(SkBitmap::kARGB_8888_Config, W, 1);
     srcBM.allocPixels();

     for (size_t i = 0; i < SK_ARRAY_COUNT(gDstConfig); i++) {
         SkBitmap dstBM;
         dstBM.setConfig(gDstConfig[i], W, 1);
         dstBM.allocPixels();

         SkCanvas canvas(dstBM);
         for (size_t j = 0; j < SK_ARRAY_COUNT(gSrcRec); j++) {
             srcBM.eraseColor(gSrcRec[j].fSrc);
             dstBM.eraseColor(gSrcRec[j].fDst);

             for (int k = 0; k < 4; k++) {
                 bool dither = (k & 1) != 0;
                 bool blend = (k & 2) != 0;
                 if (gSrcRec[j].fSrc != 0 && blend) {
                     // can't make a numerical promise about blending anything
                     // but 0
                  //   continue;
                 }
                 paint.setDither(dither);
                 paint.setAlpha(blend ? 0x80 : 0xFF);
                 canvas.drawBitmap(srcBM, 0, 0, &paint);
                 if (!check_color(dstBM, gSrcRec[j].fResult32, gSrcRec[j].fResult16,
                                  gSrcRec[j].fResult8, reporter)) {
                     SkDebugf("--- src index %d dither %d blend %d\n", j, dither, blend);
                 }
             }
         }
     }
 }

 ///////////////////////////////////////////////////////////////////////////////

 struct Mesh {
     SkPoint     fPts[4];

     Mesh(const SkBitmap& bm, SkPaint* paint) {
         const SkScalar w = SkIntToScalar(bm.width());
         const SkScalar h = SkIntToScalar(bm.height());
         fPts[0].set(0, 0);
         fPts[1].set(w, 0);
         fPts[2].set(w, h);
         fPts[3].set(0, h);
         SkShader* s = SkShader::CreateBitmapShader(bm, SkShader::kClamp_TileMode,
                                                    SkShader::kClamp_TileMode);
         paint->setShader(s)->unref();

     }

     void draw(SkCanvas* canvas, SkPaint* paint) {
         canvas->drawVertices(SkCanvas::kTriangleFan_VertexMode, 4, fPts, fPts,
                              NULL, NULL, NULL, 0, *paint);
     }
 };

 #include "SkImageEncoder.h"
 static void save_bm(const SkBitmap& bm, const char name[]) {
     SkImageEncoder::EncodeFile(name, bm, SkImageEncoder::kPNG_Type, 100);
 }

 static bool gOnce;

 // Make sure our blits are invariant with the width of the blit (i.e. that
 // special case for 8 at a time have the same results as narrower blits)
 static void test_diagonal(skiatest::Reporter* reporter) {
     static const int W = 64;
     static const int H = W;

     static const SkBitmap::Config gDstConfig[] = {
         SkBitmap::kARGB_8888_Config,
         SkBitmap::kRGB_565_Config,
         //        SkBitmap::kARGB_4444_Config,
         //        SkBitmap::kA8_Config,
     };

     static const SkColor gDstBG[] = { 0, 0xFFFFFFFF };

     SkPaint paint;

     SkBitmap srcBM;
     srcBM.setConfig(SkBitmap::kARGB_8888_Config, W, H);
     srcBM.allocPixels();
     SkRect srcR = {
         0, 0, SkIntToScalar(srcBM.width()), SkIntToScalar(srcBM.height()) };

     // cons up a mesh to draw the bitmap with
     Mesh mesh(srcBM, &paint);

     for (size_t i = 0; i < SK_ARRAY_COUNT(gDstConfig); i++) {
         SkBitmap dstBM0, dstBM1;
         dstBM0.setConfig(gDstConfig[i], W, H);
         dstBM1.setConfig(gDstConfig[i], W, H);
         dstBM0.allocPixels();
         dstBM1.allocPixels();

         SkCanvas canvas0(dstBM0);
         SkCanvas canvas1(dstBM1);
         SkColor bgColor;

         for (size_t j = 0; j < SK_ARRAY_COUNT(gDstBG); j++) {
             bgColor = gDstBG[j];

             for (int c = 0; c <= 0xFF; c++) {
                 srcBM.eraseARGB(0xFF, c, c, c);

                 for (int k = 0; k < 4; k++) {
                     bool dither = (k & 1) != 0;
                     uint8_t alpha = (k & 2) ? 0x80 : 0xFF;
                     paint.setDither(dither);
                     paint.setAlpha(alpha);

                     dstBM0.eraseColor(bgColor);
                     dstBM1.eraseColor(bgColor);

                     canvas0.drawRect(srcR, paint);
                     mesh.draw(&canvas1, &paint);

                     if (!gOnce && false) {
                         save_bm(dstBM0, "drawBitmap.png");
                         save_bm(dstBM1, "drawMesh.png");
                         gOnce = true;
                     }

                     if (memcmp(dstBM0.getPixels(), dstBM1.getPixels(), dstBM0.getSize())) {
                         SkString str;
                         str.printf("Diagonal config=%s bg=0x%x dither=%d alpha=0x%x src=0x%x",
                                    gConfigName[gDstConfig[i]], bgColor, dither, alpha, c);
                         reporter->reportFailed(str);
                     }
                 }
             }
         }
     }
 }

 static void TestBlitRow(skiatest::Reporter* reporter) {
     test_00_FF(reporter);
     test_diagonal(reporter);
 }

 #include "TestClassDef.h"
 DEFINE_TESTCLASS("BlitRow", TestBlitRowClass, TestBlitRow)

	/*
	* Copyright 2011 Google Inc.
	*
	* Use of this source code is governed by a BSD-style license that can be
	* found in the LICENSE file.
	*/
	#include "Test.h"
	#include "SkBitmap.h"
	#include "SkCanvas.h"
	#include "SkColorPriv.h"
	#include "SkGradientShader.h"
	#include "SkRect.h"

	// these are in the same order as the SkBitmap::Config enum
	static const char* gConfigName[] = {
	"None", "A1", "A8", "Index8", "565", "4444", "8888", "RLE_Index8"
	};

	/** Returns -1 on success, else the x coord of the first bad pixel, return its
	value in bad
	*/
	typedef int (Proc)(const void, int width, uint32_t expected, uint32_t* bad);

	static int proc_32(const void* ptr, int w, uint32_t expected, uint32_t* bad) {
	const SkPMColor* addr = static_cast<const SkPMColor*>(ptr);
	for (int x = 0; x < w; x++) {
	if (addr[x] != expected) {
	*bad = addr[x];
	return x;
	}
	}
	return -1;
	}

	static int proc_16(const void* ptr, int w, uint32_t expected, uint32_t* bad) {
	const uint16_t* addr = static_cast<const uint16_t*>(ptr);
	for (int x = 0; x < w; x++) {
	if (addr[x] != expected) {
	*bad = addr[x];
	return x;
	}
	}
	return -1;
	}

	static int proc_8(const void* ptr, int w, uint32_t expected, uint32_t* bad) {
	const SkPMColor* addr = static_cast<const SkPMColor*>(ptr);
	for (int x = 0; x < w; x++) {
	if (SkGetPackedA32(addr[x]) != expected) {
	*bad = SkGetPackedA32(addr[x]);
	return x;
	}
	}
	return -1;
	}

	static int proc_bad(const void, int, uint32_t, uint32_t bad) {
	*bad = 0;
	return 0;
	}

	static Proc find_proc(const SkBitmap& bm, SkPMColor expect32, uint16_t expect16,
	uint8_t expect8, uint32_t* expect) {
	switch (bm.config()) {
	case SkBitmap::kARGB_8888_Config:
	*expect = expect32;
	return proc_32;
	case SkBitmap::kARGB_4444_Config:
	case SkBitmap::kRGB_565_Config:
	*expect = expect16;
	return proc_16;
	case SkBitmap::kA8_Config:
	*expect = expect8;
	return proc_8;
	default:
	*expect = 0;
	return proc_bad;
	}
	}

	static bool check_color(const SkBitmap& bm, SkPMColor expect32,
	uint16_t expect16, uint8_t expect8,
	skiatest::Reporter* reporter) {
	uint32_t expect;
	Proc proc = find_proc(bm, expect32, expect16, expect8, &expect);
	for (int y = 0; y < bm.height(); y++) {
	uint32_t bad;
	int x = proc(bm.getAddr(0, y), bm.width(), expect, &bad);
	if (x >= 0) {
	SkString str;
	str.printf("BlitRow config=%s [%d %d] expected %x got %x",
	gConfigName[bm.config()], x, y, expect, bad);
	reporter->reportFailed(str);
	return false;
	}
	}
	return true;
	}

	// Make sure our blits always map src==0 to a noop, and src==FF to full opaque
	static void test_00_FF(skiatest::Reporter* reporter) {
	static const int W = 256;

	static const SkBitmap::Config gDstConfig[] = {
	SkBitmap::kARGB_8888_Config,
	SkBitmap::kRGB_565_Config,
	// SkBitmap::kARGB_4444_Config,
	// SkBitmap::kA8_Config,
	};

	static const struct {
	SkColor fSrc;
	SkColor fDst;
	SkPMColor fResult32;
	uint16_t fResult16;
	uint8_t fResult8;
	} gSrcRec[] = {
	{ 0, 0, 0, 0, 0 },
	{ 0, 0xFFFFFFFF, SkPackARGB32(0xFF, 0xFF, 0xFF, 0xFF), 0xFFFF, 0xFF },
	{ 0xFFFFFFFF, 0, SkPackARGB32(0xFF, 0xFF, 0xFF, 0xFF), 0xFFFF, 0xFF },
	{ 0xFFFFFFFF, 0xFFFFFFFF, SkPackARGB32(0xFF, 0xFF, 0xFF, 0xFF), 0xFFFF, 0xFF },
	};

	SkPaint paint;

	SkBitmap srcBM;
	srcBM.setConfig(SkBitmap::kARGB_8888_Config, W, 1);
	srcBM.allocPixels();

	for (size_t i = 0; i < SK_ARRAY_COUNT(gDstConfig); i++) {
	SkBitmap dstBM;
	dstBM.setConfig(gDstConfig[i], W, 1);
	dstBM.allocPixels();

	SkCanvas canvas(dstBM);
	for (size_t j = 0; j < SK_ARRAY_COUNT(gSrcRec); j++) {
	srcBM.eraseColor(gSrcRec[j].fSrc);
	dstBM.eraseColor(gSrcRec[j].fDst);

	for (int k = 0; k < 4; k++) {
	bool dither = (k & 1) != 0;
	bool blend = (k & 2) != 0;
	if (gSrcRec[j].fSrc != 0 && blend) {
	// can't make a numerical promise about blending anything
	// but 0
	// continue;
	}
	paint.setDither(dither);
	paint.setAlpha(blend ? 0x80 : 0xFF);
	canvas.drawBitmap(srcBM, 0, 0, &paint);
	if (!check_color(dstBM, gSrcRec[j].fResult32, gSrcRec[j].fResult16,
	gSrcRec[j].fResult8, reporter)) {
	SkDebugf("--- src index %d dither %d blend %d\n", j, dither, blend);
	}
	}
	}
	}
	}

	///////////////////////////////////////////////////////////////////////////////

	struct Mesh {
	SkPoint fPts[4];

	Mesh(const SkBitmap& bm, SkPaint* paint) {
	const SkScalar w = SkIntToScalar(bm.width());
	const SkScalar h = SkIntToScalar(bm.height());
	fPts[0].set(0, 0);
	fPts[1].set(w, 0);
	fPts[2].set(w, h);
	fPts[3].set(0, h);
	SkShader* s = SkShader::CreateBitmapShader(bm, SkShader::kClamp_TileMode,
	SkShader::kClamp_TileMode);
	paint->setShader(s)->unref();

	}

	void draw(SkCanvas* canvas, SkPaint* paint) {
	canvas->drawVertices(SkCanvas::kTriangleFan_VertexMode, 4, fPts, fPts,
	NULL, NULL, NULL, 0, *paint);
	}
	};

	#include "SkImageEncoder.h"
	static void save_bm(const SkBitmap& bm, const char name[]) {
	SkImageEncoder::EncodeFile(name, bm, SkImageEncoder::kPNG_Type, 100);
	}

	static bool gOnce;

	// Make sure our blits are invariant with the width of the blit (i.e. that
	// special case for 8 at a time have the same results as narrower blits)
	static void test_diagonal(skiatest::Reporter* reporter) {
	static const int W = 64;
	static const int H = W;

	static const SkBitmap::Config gDstConfig[] = {
	SkBitmap::kARGB_8888_Config,
	SkBitmap::kRGB_565_Config,
	// SkBitmap::kARGB_4444_Config,
	// SkBitmap::kA8_Config,
	};

	static const SkColor gDstBG[] = { 0, 0xFFFFFFFF };

	SkPaint paint;

	SkBitmap srcBM;
	srcBM.setConfig(SkBitmap::kARGB_8888_Config, W, H);
	srcBM.allocPixels();
	SkRect srcR = {
	0, 0, SkIntToScalar(srcBM.width()), SkIntToScalar(srcBM.height()) };

	// cons up a mesh to draw the bitmap with
	Mesh mesh(srcBM, &paint);

	for (size_t i = 0; i < SK_ARRAY_COUNT(gDstConfig); i++) {
	SkBitmap dstBM0, dstBM1;
	dstBM0.setConfig(gDstConfig[i], W, H);
	dstBM1.setConfig(gDstConfig[i], W, H);
	dstBM0.allocPixels();
	dstBM1.allocPixels();

	SkCanvas canvas0(dstBM0);
	SkCanvas canvas1(dstBM1);
	SkColor bgColor;

	for (size_t j = 0; j < SK_ARRAY_COUNT(gDstBG); j++) {
	bgColor = gDstBG[j];

	for (int c = 0; c <= 0xFF; c++) {
	srcBM.eraseARGB(0xFF, c, c, c);

	for (int k = 0; k < 4; k++) {
	bool dither = (k & 1) != 0;
	uint8_t alpha = (k & 2) ? 0x80 : 0xFF;
	paint.setDither(dither);
	paint.setAlpha(alpha);

	dstBM0.eraseColor(bgColor);
	dstBM1.eraseColor(bgColor);

	canvas0.drawRect(srcR, paint);
	mesh.draw(&canvas1, &paint);

	if (!gOnce && false) {
	save_bm(dstBM0, "drawBitmap.png");
	save_bm(dstBM1, "drawMesh.png");
	gOnce = true;
	}

	if (memcmp(dstBM0.getPixels(), dstBM1.getPixels(), dstBM0.getSize())) {
	SkString str;
	str.printf("Diagonal config=%s bg=0x%x dither=%d alpha=0x%x src=0x%x",
	gConfigName[gDstConfig[i]], bgColor, dither, alpha, c);
	reporter->reportFailed(str);
	}
	}
	}
	}
	}
	}

	static void TestBlitRow(skiatest::Reporter* reporter) {
	test_00_FF(reporter);
	test_diagonal(reporter);
	}

	#include "TestClassDef.h"
	DEFINE_TESTCLASS("BlitRow", TestBlitRowClass, TestBlitRow)