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- /*
- * Copyright 2016 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 using packed pixel configs (4444, 565).
- * This test will make sure that these RGBA_4444 and RGB_565 are always supported
- * as valid texturing configs.
- */
- #include "tests/Test.h"
- #include "include/gpu/GrContext.h"
- #include "src/gpu/GrContextPriv.h"
- #include "src/gpu/GrProxyProvider.h"
- #include "src/gpu/GrTextureProxy.h"
- #include "tools/gpu/ProxyUtils.h"
- static const int DEV_W = 10, DEV_H = 10;
- static const uint8_t TOL = 0x4;
- static void check_component(skiatest::Reporter* reporter, uint8_t control, uint8_t test) {
- uint8_t diff = 0;
- if (control >= test) {
- diff = control - test;
- } else {
- diff = test - control;
- }
- REPORTER_ASSERT(reporter, diff < TOL);
- }
- static uint8_t expand_value(uint8_t original, int sigBits) {
- SkASSERT(sigBits >= 4);
- uint8_t inSigBitShift = 8 - sigBits;
- uint8_t duplBitShift = sigBits - inSigBitShift;
- return (original << inSigBitShift) + (original >> duplBitShift);
- }
- static void check_4444(skiatest::Reporter* reporter,
- const SkTDArray<uint16_t>& controlData,
- const SkTDArray<uint32_t>& readBuffer) {
- for (int j = 0; j < DEV_H; ++j) {
- for (int i = 0; i < DEV_W; ++i) {
- uint16_t control = controlData[i + j * DEV_H];
- uint32_t test = readBuffer[i + j * DEV_H];
- // Test alpha component
- uint8_t ctrlComp = expand_value(control & 0xF, 4);
- uint8_t testComp = GrColorUnpackA(test);
- check_component(reporter, ctrlComp, testComp);
- // Test blue component
- ctrlComp = expand_value((control >> 4) & 0xF, 4);
- testComp = GrColorUnpackB(test);
- check_component(reporter, ctrlComp, testComp);
- // Test green component
- ctrlComp = expand_value((control >> 8) & 0xF, 4);
- testComp = GrColorUnpackG(test);
- check_component(reporter, ctrlComp, testComp);
- // Test red component
- ctrlComp = expand_value((control >> 12) & 0xF, 4);
- testComp = GrColorUnpackR(test);
- check_component(reporter, ctrlComp, testComp);
- }
- }
- }
- static void check_565(skiatest::Reporter* reporter,
- const SkTDArray<uint16_t>& controlData,
- const SkTDArray<GrColor>& readBuffer) {
- for (int j = 0; j < DEV_H; ++j) {
- for (int i = 0; i < DEV_W; ++i) {
- uint16_t control = controlData[i + j * DEV_H];
- GrColor test = readBuffer[i + j * DEV_H];
- // Test blue component (5 bit control)
- uint8_t ctrlComp = expand_value(control & 0x1F, 5);
- uint8_t testComp = GrColorUnpackB(test);
- check_component(reporter, ctrlComp, testComp);
- // Test green component (6 bit control)
- ctrlComp = expand_value((control >> 5) & 0x3F, 6);
- testComp = GrColorUnpackG(test);
- check_component(reporter, ctrlComp, testComp);
- // Test red component (5 bit control)
- ctrlComp = expand_value((control >> 11) & 0x1F, 5);
- testComp = GrColorUnpackR(test);
- check_component(reporter, ctrlComp, testComp);
- }
- }
- }
- static void run_test(skiatest::Reporter* reporter, GrContext* context, int arraySize,
- SkColorType colorType) {
- SkTDArray<uint16_t> controlPixelData;
- // We will read back into an 8888 buffer since 565/4444 read backs aren't supported
- SkTDArray<GrColor> readBuffer;
- controlPixelData.setCount(arraySize);
- readBuffer.setCount(arraySize);
- for (int i = 0; i < arraySize; i += 2) {
- controlPixelData[i] = 0xF00F;
- controlPixelData[i + 1] = 0xA62F;
- }
- const SkImageInfo dstInfo =
- SkImageInfo::Make(DEV_W, DEV_H, kRGBA_8888_SkColorType, kPremul_SkAlphaType);
- for (auto origin : { kTopLeft_GrSurfaceOrigin, kBottomLeft_GrSurfaceOrigin }) {
- auto proxy = sk_gpu_test::MakeTextureProxyFromData(context, GrRenderable::kNo, DEV_W, DEV_H,
- colorType, kPremul_SkAlphaType, origin,
- controlPixelData.begin(), 0);
- SkASSERT(proxy);
- sk_sp<GrSurfaceContext> sContext = context->priv().makeWrappedSurfaceContext(
- std::move(proxy), SkColorTypeToGrColorType(colorType), kPremul_SkAlphaType);
- if (!sContext->readPixels(dstInfo, readBuffer.begin(), 0, {0, 0})) {
- // We only require this to succeed if the format is renderable.
- REPORTER_ASSERT(reporter, !context->colorTypeSupportedAsSurface(colorType));
- return;
- }
- if (kARGB_4444_SkColorType == colorType) {
- check_4444(reporter, controlPixelData, readBuffer);
- } else {
- SkASSERT(kRGB_565_SkColorType == colorType);
- check_565(reporter, controlPixelData, readBuffer);
- }
- }
- }
- static const int CONTROL_ARRAY_SIZE = DEV_W * DEV_H;
- DEF_GPUTEST_FOR_RENDERING_CONTEXTS(RGBA4444TextureTest, reporter, ctxInfo) {
- if (ctxInfo.grContext()->colorTypeSupportedAsImage(kARGB_4444_SkColorType)) {
- run_test(reporter, ctxInfo.grContext(), CONTROL_ARRAY_SIZE, kARGB_4444_SkColorType);
- }
- }
- DEF_GPUTEST_FOR_RENDERING_CONTEXTS(RGB565TextureTest, reporter, ctxInfo) {
- if (ctxInfo.grContext()->colorTypeSupportedAsImage(kRGB_565_SkColorType)) {
- run_test(reporter, ctxInfo.grContext(), CONTROL_ARRAY_SIZE, kRGB_565_SkColorType);
- }
- }
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