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      1 /*
      2  * Copyright 2015 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 // This is a GPU-backend specific test. It relies on static intializers to work
      9 
     10 #include "SkTypes.h"
     11 
     12 #include "GrContextFactory.h"
     13 #include "GrContextPriv.h"
     14 #include "GrSurfaceProxy.h"
     15 #include "ProxyUtils.h"
     16 #include "SkGr.h"
     17 #include "Test.h"
     18 #include "TestUtils.h"
     19 
     20 using sk_gpu_test::GrContextFactory;
     21 
     22 void basic_texture_test(skiatest::Reporter* reporter, GrContext* context, SkColorType ct,
     23                         bool renderTarget) {
     24     const int kWidth = 16;
     25     const int kHeight = 16;
     26     SkAutoTMalloc<GrColor> srcBuffer(kWidth*kHeight);
     27     SkAutoTMalloc<GrColor> dstBuffer(kWidth*kHeight);
     28 
     29     fill_pixel_data(kWidth, kHeight, srcBuffer.get());
     30 
     31     auto proxy = sk_gpu_test::MakeTextureProxyFromData(context, renderTarget, kWidth, kHeight, ct,
     32                                                        kTopLeft_GrSurfaceOrigin, srcBuffer, 0);
     33     REPORTER_ASSERT(reporter, proxy);
     34     if (proxy) {
     35         sk_sp<GrSurfaceContext> sContext = context->priv().makeWrappedSurfaceContext(proxy);
     36 
     37         SkImageInfo dstInfo = SkImageInfo::Make(kWidth, kHeight, ct, kPremul_SkAlphaType);
     38 
     39         bool result = sContext->readPixels(dstInfo, dstBuffer, 0, 0, 0);
     40         REPORTER_ASSERT(reporter, result);
     41         REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(srcBuffer,
     42                                                                          dstBuffer,
     43                                                                          kWidth,
     44                                                                          kHeight));
     45 
     46         dstInfo = SkImageInfo::Make(10, 2, ct, kPremul_SkAlphaType);
     47         result = sContext->writePixels(dstInfo, srcBuffer, 0, 2, 10);
     48         REPORTER_ASSERT(reporter, result);
     49 
     50         memset(dstBuffer, 0, kWidth*kHeight*sizeof(GrColor));
     51 
     52         result = sContext->readPixels(dstInfo, dstBuffer, 0, 2, 10);
     53         REPORTER_ASSERT(reporter, result);
     54 
     55         REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(srcBuffer,
     56                                                                          dstBuffer,
     57                                                                          10,
     58                                                                          2));
     59     }
     60 
     61     proxy = sk_gpu_test::MakeTextureProxyFromData(context, renderTarget, kWidth, kHeight, ct,
     62                                                   kBottomLeft_GrSurfaceOrigin, srcBuffer, 0);
     63     REPORTER_ASSERT(reporter, proxy);
     64     if (proxy) {
     65         sk_sp<GrSurfaceContext> sContext = context->priv().makeWrappedSurfaceContext(proxy);
     66 
     67         SkImageInfo dstInfo = SkImageInfo::Make(kWidth, kHeight, ct, kPremul_SkAlphaType);
     68 
     69         bool result = sContext->readPixels(dstInfo, dstBuffer, 0, 0, 0);
     70         REPORTER_ASSERT(reporter, result);
     71         REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(srcBuffer,
     72                                                                          dstBuffer,
     73                                                                          kWidth,
     74                                                                          kHeight));
     75 
     76         dstInfo = SkImageInfo::Make(4, 5, ct, kPremul_SkAlphaType);
     77         result = sContext->writePixels(dstInfo, srcBuffer, 0, 5, 4);
     78         REPORTER_ASSERT(reporter, result);
     79 
     80         memset(dstBuffer, 0, kWidth*kHeight*sizeof(GrColor));
     81 
     82         result = sContext->readPixels(dstInfo, dstBuffer, 0, 5, 4);
     83         REPORTER_ASSERT(reporter, result);
     84 
     85         REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(srcBuffer,
     86                                                                          dstBuffer,
     87                                                                          4,
     88                                                                          5));
     89 
     90     }
     91 }
     92 
     93 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(GrUploadPixelsTests, reporter, ctxInfo) {
     94     // RGBA
     95     basic_texture_test(reporter, ctxInfo.grContext(), kRGBA_8888_SkColorType, false);
     96     basic_texture_test(reporter, ctxInfo.grContext(), kRGBA_8888_SkColorType, true);
     97 
     98     // BGRA
     99     basic_texture_test(reporter, ctxInfo.grContext(), kBGRA_8888_SkColorType, false);
    100     basic_texture_test(reporter, ctxInfo.grContext(), kBGRA_8888_SkColorType, true);
    101 }
    102