tests/RectangleTextureTest.cpp - platform/external/skqp - Gitiles

 /*
  * Copyright 2015 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"
 #if SK_SUPPORT_GPU
 #include "GrContext.h"
 #include "GrDrawContext.h"
 #include "gl/GrGLGpu.h"
 #include "gl/GrGLUtil.h"
 #include "gl/SkGLContext.h"

 static void test_read_pixels(skiatest::Reporter* reporter, GrContext* context,
                              GrTexture* rectangleTexture, uint32_t expectedPixelValues[]) {
     int pixelCnt = rectangleTexture->width() * rectangleTexture->height();
     SkAutoTMalloc<uint32_t> pixels(pixelCnt);
     memset(pixels.get(), 0, sizeof(uint32_t)*pixelCnt);
     bool read = rectangleTexture->readPixels(0, 0, rectangleTexture->width(),
                                             rectangleTexture->height(), kRGBA_8888_GrPixelConfig,
                                             pixels.get());
     if (!read) {
         ERRORF(reporter, "Error reading rectangle texture.");
     }
     for (int i = 0; i < pixelCnt; ++i) {
         if (pixels.get()[i] != expectedPixelValues[i]) {
             ERRORF(reporter, "Error, rectangle texture pixel value %d should be 0x%08x,"
                              " got 0x%08x.", i, expectedPixelValues[i], pixels.get()[i]);
             break;
         }
     }
 }

 static void test_write_pixels(skiatest::Reporter* reporter, GrContext* context,
                               GrTexture* rectangleTexture) {
     int pixelCnt = rectangleTexture->width() * rectangleTexture->height();
     SkAutoTMalloc<uint32_t> pixels(pixelCnt);
     for (int y = 0; y < rectangleTexture->width(); ++y) {
         for (int x = 0; x < rectangleTexture->height(); ++x) {
             pixels.get()[y * rectangleTexture->width() + x] = GrColorPackRGBA(x, y, x + y, x * y);
         }
     }
     bool write = rectangleTexture->writePixels(0, 0, rectangleTexture->width(),
                                                rectangleTexture->height(), kRGBA_8888_GrPixelConfig,
                                                pixels.get());
     if (!write) {
         ERRORF(reporter, "Error writing to rectangle texture.");
     }
     test_read_pixels(reporter, context, rectangleTexture, pixels.get());
 }

 static void test_copy_surface_src(skiatest::Reporter* reporter, GrContext* context,
                                   GrTexture* rectangleTexture, uint32_t expectedPixelValues[]) {
     GrSurfaceDesc copyDstDesc;
     copyDstDesc.fConfig = kRGBA_8888_GrPixelConfig;
     copyDstDesc.fWidth = rectangleTexture->width();
     copyDstDesc.fHeight = rectangleTexture->height();
     copyDstDesc.fFlags = kRenderTarget_GrSurfaceFlag;
     SkAutoTUnref<GrTexture> dst(context->textureProvider()->createTexture(copyDstDesc, true));
     context->copySurface(dst, rectangleTexture);
     test_read_pixels(reporter, context, dst, expectedPixelValues);
 }

 static void test_copy_surface_dst(skiatest::Reporter* reporter, GrContext* context,
                                   GrTexture* rectangleTexture) {
     int pixelCnt = rectangleTexture->width() * rectangleTexture->height();
     SkAutoTMalloc<uint32_t> pixels(pixelCnt);
     for (int y = 0; y < rectangleTexture->width(); ++y) {
         for (int x = 0; x < rectangleTexture->height(); ++x) {
             pixels.get()[y * rectangleTexture->width() + x] = GrColorPackRGBA(y, x, x * y, x *+ y);
         }
     }

     GrSurfaceDesc copySrcDesc;
     copySrcDesc.fConfig = kRGBA_8888_GrPixelConfig;
     copySrcDesc.fWidth = rectangleTexture->width();
     copySrcDesc.fHeight = rectangleTexture->height();
     copySrcDesc.fFlags = kRenderTarget_GrSurfaceFlag;
     SkAutoTUnref<GrTexture> src(context->textureProvider()->createTexture(copySrcDesc, true,
                                                                           pixels.get(), 0));

     context->copySurface(rectangleTexture, src);
     test_read_pixels(reporter, context, rectangleTexture, pixels.get());
 }

 static void test_clear(skiatest::Reporter* reporter, GrContext* context,
                        GrTexture* rectangleTexture) {
     if (rectangleTexture->asRenderTarget()) {
         SkAutoTUnref<GrDrawContext> dc(context->drawContext(rectangleTexture->asRenderTarget()));
         if (!dc) {
             ERRORF(reporter, "Could not get GrDrawContext for rectangle texture.");
             return;
         }

         // Clear the whole thing.
         GrColor color0 = GrColorPackRGBA(0xA, 0xB, 0xC, 0xD);
         dc->clear(nullptr, color0, false);

         int w = rectangleTexture->width();
         int h = rectangleTexture->height();
         int pixelCnt = w * h;
         SkAutoTMalloc<uint32_t> expectedPixels(pixelCnt);

         // The clear color is a GrColor, our readback is to kRGBA_8888, which may be different.
         uint32_t expectedColor0 = 0;
         uint8_t* expectedBytes0 = SkTCast<uint8_t*>(&expectedColor0);
         expectedBytes0[0] = GrColorUnpackR(color0);
         expectedBytes0[1] = GrColorUnpackG(color0);
         expectedBytes0[2] = GrColorUnpackB(color0);
         expectedBytes0[3] = GrColorUnpackA(color0);
         for (int i = 0; i < rectangleTexture->width() * rectangleTexture->height(); ++i) {
             expectedPixels.get()[i] = expectedColor0;
         }

         // Clear the the top to a different color.
         GrColor color1 = GrColorPackRGBA(0x1, 0x2, 0x3, 0x4);
         SkIRect rect = SkIRect::MakeWH(w, h/2);
         dc->clear(&rect, color1, false);

         uint32_t expectedColor1 = 0;
         uint8_t* expectedBytes1 = SkTCast<uint8_t*>(&expectedColor1);
         expectedBytes1[0] = GrColorUnpackR(color1);
         expectedBytes1[1] = GrColorUnpackG(color1);
         expectedBytes1[2] = GrColorUnpackB(color1);
         expectedBytes1[3] = GrColorUnpackA(color1);

         for (int y = 0; y < h/2; ++y) {
             for (int x = 0; x < w; ++x) {
                 expectedPixels.get()[y * h + x] = expectedColor1;
             }
         }

         test_read_pixels(reporter, context, rectangleTexture, expectedPixels.get());
     }
 }

 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(RectangleTexture, reporter, context, glContext) {
     static const int kWidth = 13;
     static const int kHeight = 13;

     GrColor pixels[kWidth * kHeight];
     for (int y = 0; y < kHeight; ++y) {
         for (int x = 0; x < kWidth; ++x) {
             pixels[y * kWidth + x] = y * kWidth + x;
         }
     }

     for (int origin = 0; origin < 2; ++origin) {
         GrGLuint rectTexID = glContext->createTextureRectangle(kWidth, kHeight, GR_GL_RGBA,
                                                                GR_GL_RGBA, GR_GL_UNSIGNED_BYTE,
                                                                pixels);

         if (!rectTexID) {
             return;
         }

         // Let GrContext know that we messed with the GL context directly.
         context->resetContext();

         // Wrap the rectangle texture ID in a GrTexture
         GrGLTextureInfo rectangleInfo;
         rectangleInfo.fID = rectTexID;
         rectangleInfo.fTarget = GR_GL_TEXTURE_RECTANGLE;

         GrBackendTextureDesc rectangleDesc;
         rectangleDesc.fFlags = kRenderTarget_GrBackendTextureFlag;
         rectangleDesc.fConfig = kRGBA_8888_GrPixelConfig;
         rectangleDesc.fWidth = kWidth;
         rectangleDesc.fHeight = kHeight;
         rectangleDesc.fOrigin = origin ? kBottomLeft_GrSurfaceOrigin : kTopLeft_GrSurfaceOrigin;
         rectangleDesc.fTextureHandle = reinterpret_cast<GrBackendObject>(&rectangleInfo);

         GrColor refPixels[kWidth * kHeight];
         bool flipRef = rectangleDesc.fOrigin == kBottomLeft_GrSurfaceOrigin;
         for (int y = 0; y < kHeight; ++y) {
             for (int x = 0; x < kWidth; ++x) {
                 int y0 = flipRef ? kHeight - y - 1 : y;
                 refPixels[y * kWidth + x] = pixels[y0 * kWidth + x];
             }
         }

         SkAutoTUnref<GrTexture> rectangleTexture(
             context->textureProvider()->wrapBackendTexture(rectangleDesc));
         if (!rectangleTexture) {
             ERRORF(reporter, "Error wrapping rectangle texture in GrTexture.");
             GR_GL_CALL(glContext->gl(), DeleteTextures(1, &rectTexID));
             continue;
         }

         test_read_pixels(reporter, context, rectangleTexture, refPixels);

         test_copy_surface_src(reporter, context, rectangleTexture, refPixels);

         test_copy_surface_dst(reporter, context, rectangleTexture);

         test_write_pixels(reporter, context, rectangleTexture);

         test_clear(reporter, context, rectangleTexture);

         GR_GL_CALL(glContext->gl(), DeleteTextures(1, &rectTexID));
     }
 }

 #endif
	/*
	* Copyright 2015 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"
	#if SK_SUPPORT_GPU
	#include "GrContext.h"
	#include "GrDrawContext.h"
	#include "gl/GrGLGpu.h"
	#include "gl/GrGLUtil.h"
	#include "gl/SkGLContext.h"

	static void test_read_pixels(skiatest::Reporter* reporter, GrContext* context,
	GrTexture* rectangleTexture, uint32_t expectedPixelValues[]) {
	int pixelCnt = rectangleTexture->width() * rectangleTexture->height();
	SkAutoTMalloc<uint32_t> pixels(pixelCnt);
	memset(pixels.get(), 0, sizeof(uint32_t)*pixelCnt);
	bool read = rectangleTexture->readPixels(0, 0, rectangleTexture->width(),
	rectangleTexture->height(), kRGBA_8888_GrPixelConfig,
	pixels.get());
	if (!read) {
	ERRORF(reporter, "Error reading rectangle texture.");
	}
	for (int i = 0; i < pixelCnt; ++i) {
	if (pixels.get()[i] != expectedPixelValues[i]) {
	ERRORF(reporter, "Error, rectangle texture pixel value %d should be 0x%08x,"
	" got 0x%08x.", i, expectedPixelValues[i], pixels.get()[i]);
	break;
	}
	}
	}

	static void test_write_pixels(skiatest::Reporter* reporter, GrContext* context,
	GrTexture* rectangleTexture) {
	int pixelCnt = rectangleTexture->width() * rectangleTexture->height();
	SkAutoTMalloc<uint32_t> pixels(pixelCnt);
	for (int y = 0; y < rectangleTexture->width(); ++y) {
	for (int x = 0; x < rectangleTexture->height(); ++x) {
	pixels.get()[y * rectangleTexture->width() + x] = GrColorPackRGBA(x, y, x + y, x * y);
	}
	}
	bool write = rectangleTexture->writePixels(0, 0, rectangleTexture->width(),
	rectangleTexture->height(), kRGBA_8888_GrPixelConfig,
	pixels.get());
	if (!write) {
	ERRORF(reporter, "Error writing to rectangle texture.");
	}
	test_read_pixels(reporter, context, rectangleTexture, pixels.get());
	}

	static void test_copy_surface_src(skiatest::Reporter* reporter, GrContext* context,
	GrTexture* rectangleTexture, uint32_t expectedPixelValues[]) {
	GrSurfaceDesc copyDstDesc;
	copyDstDesc.fConfig = kRGBA_8888_GrPixelConfig;
	copyDstDesc.fWidth = rectangleTexture->width();
	copyDstDesc.fHeight = rectangleTexture->height();
	copyDstDesc.fFlags = kRenderTarget_GrSurfaceFlag;
	SkAutoTUnref<GrTexture> dst(context->textureProvider()->createTexture(copyDstDesc, true));
	context->copySurface(dst, rectangleTexture);
	test_read_pixels(reporter, context, dst, expectedPixelValues);
	}

	static void test_copy_surface_dst(skiatest::Reporter* reporter, GrContext* context,
	GrTexture* rectangleTexture) {
	int pixelCnt = rectangleTexture->width() * rectangleTexture->height();
	SkAutoTMalloc<uint32_t> pixels(pixelCnt);
	for (int y = 0; y < rectangleTexture->width(); ++y) {
	for (int x = 0; x < rectangleTexture->height(); ++x) {
	pixels.get()[y * rectangleTexture->width() + x] = GrColorPackRGBA(y, x, x * y, x *+ y);
	}
	}

	GrSurfaceDesc copySrcDesc;
	copySrcDesc.fConfig = kRGBA_8888_GrPixelConfig;
	copySrcDesc.fWidth = rectangleTexture->width();
	copySrcDesc.fHeight = rectangleTexture->height();
	copySrcDesc.fFlags = kRenderTarget_GrSurfaceFlag;
	SkAutoTUnref<GrTexture> src(context->textureProvider()->createTexture(copySrcDesc, true,
	pixels.get(), 0));

	context->copySurface(rectangleTexture, src);
	test_read_pixels(reporter, context, rectangleTexture, pixels.get());
	}

	static void test_clear(skiatest::Reporter* reporter, GrContext* context,
	GrTexture* rectangleTexture) {
	if (rectangleTexture->asRenderTarget()) {
	SkAutoTUnref<GrDrawContext> dc(context->drawContext(rectangleTexture->asRenderTarget()));
	if (!dc) {
	ERRORF(reporter, "Could not get GrDrawContext for rectangle texture.");
	return;
	}

	// Clear the whole thing.
	GrColor color0 = GrColorPackRGBA(0xA, 0xB, 0xC, 0xD);
	dc->clear(nullptr, color0, false);

	int w = rectangleTexture->width();
	int h = rectangleTexture->height();
	int pixelCnt = w * h;
	SkAutoTMalloc<uint32_t> expectedPixels(pixelCnt);

	// The clear color is a GrColor, our readback is to kRGBA_8888, which may be different.
	uint32_t expectedColor0 = 0;
	uint8_t* expectedBytes0 = SkTCast<uint8_t*>(&expectedColor0);
	expectedBytes0[0] = GrColorUnpackR(color0);
	expectedBytes0[1] = GrColorUnpackG(color0);
	expectedBytes0[2] = GrColorUnpackB(color0);
	expectedBytes0[3] = GrColorUnpackA(color0);
	for (int i = 0; i < rectangleTexture->width() * rectangleTexture->height(); ++i) {
	expectedPixels.get()[i] = expectedColor0;
	}

	// Clear the the top to a different color.
	GrColor color1 = GrColorPackRGBA(0x1, 0x2, 0x3, 0x4);
	SkIRect rect = SkIRect::MakeWH(w, h/2);
	dc->clear(&rect, color1, false);

	uint32_t expectedColor1 = 0;
	uint8_t* expectedBytes1 = SkTCast<uint8_t*>(&expectedColor1);
	expectedBytes1[0] = GrColorUnpackR(color1);
	expectedBytes1[1] = GrColorUnpackG(color1);
	expectedBytes1[2] = GrColorUnpackB(color1);
	expectedBytes1[3] = GrColorUnpackA(color1);

	for (int y = 0; y < h/2; ++y) {
	for (int x = 0; x < w; ++x) {
	expectedPixels.get()[y * h + x] = expectedColor1;
	}
	}

	test_read_pixels(reporter, context, rectangleTexture, expectedPixels.get());
	}
	}

	DEF_GPUTEST_FOR_RENDERING_CONTEXTS(RectangleTexture, reporter, context, glContext) {
	static const int kWidth = 13;
	static const int kHeight = 13;

	GrColor pixels[kWidth * kHeight];
	for (int y = 0; y < kHeight; ++y) {
	for (int x = 0; x < kWidth; ++x) {
	pixels[y * kWidth + x] = y * kWidth + x;
	}
	}

	for (int origin = 0; origin < 2; ++origin) {
	GrGLuint rectTexID = glContext->createTextureRectangle(kWidth, kHeight, GR_GL_RGBA,
	GR_GL_RGBA, GR_GL_UNSIGNED_BYTE,
	pixels);

	if (!rectTexID) {
	return;
	}

	// Let GrContext know that we messed with the GL context directly.
	context->resetContext();

	// Wrap the rectangle texture ID in a GrTexture
	GrGLTextureInfo rectangleInfo;
	rectangleInfo.fID = rectTexID;
	rectangleInfo.fTarget = GR_GL_TEXTURE_RECTANGLE;

	GrBackendTextureDesc rectangleDesc;
	rectangleDesc.fFlags = kRenderTarget_GrBackendTextureFlag;
	rectangleDesc.fConfig = kRGBA_8888_GrPixelConfig;
	rectangleDesc.fWidth = kWidth;
	rectangleDesc.fHeight = kHeight;
	rectangleDesc.fOrigin = origin ? kBottomLeft_GrSurfaceOrigin : kTopLeft_GrSurfaceOrigin;
	rectangleDesc.fTextureHandle = reinterpret_cast<GrBackendObject>(&rectangleInfo);

	GrColor refPixels[kWidth * kHeight];
	bool flipRef = rectangleDesc.fOrigin == kBottomLeft_GrSurfaceOrigin;
	for (int y = 0; y < kHeight; ++y) {
	for (int x = 0; x < kWidth; ++x) {
	int y0 = flipRef ? kHeight - y - 1 : y;
	refPixels[y * kWidth + x] = pixels[y0 * kWidth + x];
	}
	}

	SkAutoTUnref<GrTexture> rectangleTexture(
	context->textureProvider()->wrapBackendTexture(rectangleDesc));
	if (!rectangleTexture) {
	ERRORF(reporter, "Error wrapping rectangle texture in GrTexture.");
	GR_GL_CALL(glContext->gl(), DeleteTextures(1, &rectTexID));
	continue;
	}

	test_read_pixels(reporter, context, rectangleTexture, refPixels);

	test_copy_surface_src(reporter, context, rectangleTexture, refPixels);

	test_copy_surface_dst(reporter, context, rectangleTexture);

	test_write_pixels(reporter, context, rectangleTexture);

	test_clear(reporter, context, rectangleTexture);

	GR_GL_CALL(glContext->gl(), DeleteTextures(1, &rectTexID));
	}
	}

	#endif