| /* |
| * Copyright 2014 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| /* |
| * This is a straightforward test of floating point textures, which are |
| * supported on some platforms. As of right now, this test only supports |
| * 32 bit floating point textures, and indeed floating point test values |
| * have been selected to require 32 bits of precision and full IEEE conformance |
| */ |
| |
| #include "include/core/SkAlphaType.h" |
| #include "include/core/SkColorSpace.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkString.h" |
| #include "include/gpu/GpuTypes.h" |
| #include "include/gpu/GrDirectContext.h" |
| #include "include/gpu/GrTypes.h" |
| #include "include/private/base/SkTDArray.h" |
| #include "include/private/gpu/ganesh/GrTypesPriv.h" |
| #include "src/base/SkHalf.h" |
| #include "src/gpu/ganesh/GrDirectContextPriv.h" |
| #include "src/gpu/ganesh/GrImageInfo.h" |
| #include "src/gpu/ganesh/GrPixmap.h" |
| #include "src/gpu/ganesh/GrSurfaceProxyView.h" |
| #include "src/gpu/ganesh/SurfaceContext.h" |
| #include "tests/CtsEnforcement.h" |
| #include "tests/Test.h" |
| #include "tools/gpu/ProxyUtils.h" |
| |
| #include <cstring> |
| #include <initializer_list> |
| #include <memory> |
| #include <utility> |
| |
| struct GrContextOptions; |
| |
| static const int DEV_W = 100, DEV_H = 100; |
| |
| template <typename T> |
| void runFPTest(skiatest::Reporter* reporter, GrDirectContext* dContext, |
| T min, T max, T epsilon, T maxInt, |
| int arraySize, GrColorType colorType) { |
| if (0 != arraySize % 4) { |
| REPORT_FAILURE(reporter, "(0 != arraySize % 4)", |
| SkString("arraySize must be divisible by 4.")); |
| return; |
| } |
| |
| SkTDArray<T> controlPixelData, readBuffer; |
| controlPixelData.resize(arraySize); |
| readBuffer.resize(arraySize); |
| |
| for (int i = 0; i < arraySize; i += 4) { |
| controlPixelData[i + 0] = min; |
| controlPixelData[i + 1] = max; |
| controlPixelData[i + 2] = epsilon; |
| controlPixelData[i + 3] = maxInt; |
| } |
| |
| for (auto origin : {kTopLeft_GrSurfaceOrigin, kBottomLeft_GrSurfaceOrigin}) { |
| GrImageInfo info(colorType, kPremul_SkAlphaType, nullptr, {DEV_W, DEV_H}); |
| GrCPixmap controlPixmap(info, controlPixelData.begin(), info.minRowBytes()); |
| auto fpView = sk_gpu_test::MakeTextureProxyViewFromData(dContext, |
| GrRenderable::kYes, |
| origin, |
| controlPixmap); |
| // Floating point textures are NOT supported everywhere |
| if (!fpView) { |
| continue; |
| } |
| |
| auto sc = dContext->priv().makeSC(std::move(fpView), info.colorInfo()); |
| REPORTER_ASSERT(reporter, sc); |
| |
| GrPixmap readPixmap(info, readBuffer.begin(), info.minRowBytes()); |
| bool result = sc->readPixels(dContext, readPixmap, {0, 0}); |
| REPORTER_ASSERT(reporter, result); |
| REPORTER_ASSERT(reporter, |
| !memcmp(readBuffer.begin(), controlPixelData.begin(), readBuffer.size_bytes())); |
| } |
| } |
| |
| static const int HALF_ALPHA_CONTROL_ARRAY_SIZE = DEV_W * DEV_H * 1 /*alpha-only*/; |
| static const SkHalf kMaxIntegerRepresentableInHalfFloatingPoint = 0x6800; // 2 ^ 11 |
| |
| DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(HalfFloatAlphaTextureTest, |
| reporter, |
| ctxInfo, |
| CtsEnforcement::kApiLevel_T) { |
| auto direct = ctxInfo.directContext(); |
| |
| runFPTest<SkHalf>(reporter, direct, SK_HalfMin, SK_HalfMax, SK_HalfEpsilon, |
| kMaxIntegerRepresentableInHalfFloatingPoint, HALF_ALPHA_CONTROL_ARRAY_SIZE, |
| GrColorType::kAlpha_F16); |
| } |
| |
| static const int HALF_RGBA_CONTROL_ARRAY_SIZE = DEV_W * DEV_H * 4 /*RGBA*/; |
| |
| DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(HalfFloatRGBATextureTest, |
| reporter, |
| ctxInfo, |
| CtsEnforcement::kApiLevel_T) { |
| auto direct = ctxInfo.directContext(); |
| |
| runFPTest<SkHalf>(reporter, direct, SK_HalfMin, SK_HalfMax, SK_HalfEpsilon, |
| kMaxIntegerRepresentableInHalfFloatingPoint, HALF_RGBA_CONTROL_ARRAY_SIZE, |
| GrColorType::kRGBA_F16); |
| } |