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/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "TestUtils.h"
#if SK_SUPPORT_GPU
#include "GrSurfaceContext.h"
#include "GrSurfaceProxy.h"
#include "GrTextureProxy.h"
void test_read_pixels(skiatest::Reporter* reporter,
GrSurfaceContext* srcContext, uint32_t expectedPixelValues[],
const char* testName) {
int pixelCnt = srcContext->width() * srcContext->height();
SkAutoTMalloc<uint32_t> pixels(pixelCnt);
memset(pixels.get(), 0, sizeof(uint32_t)*pixelCnt);
SkImageInfo ii = SkImageInfo::Make(srcContext->width(), srcContext->height(),
kRGBA_8888_SkColorType, kPremul_SkAlphaType);
bool read = srcContext->readPixels(ii, pixels.get(), 0, 0, 0);
if (!read) {
ERRORF(reporter, "%s: Error reading from texture.", testName);
}
for (int i = 0; i < pixelCnt; ++i) {
if (pixels.get()[i] != expectedPixelValues[i]) {
ERRORF(reporter, "%s: Error, pixel value %d should be 0x%08x, got 0x%08x.",
testName, i, expectedPixelValues[i], pixels.get()[i]);
break;
}
}
}
void test_write_pixels(skiatest::Reporter* reporter,
GrSurfaceContext* dstContext, bool expectedToWork,
const char* testName) {
int pixelCnt = dstContext->width() * dstContext->height();
SkAutoTMalloc<uint32_t> pixels(pixelCnt);
for (int y = 0; y < dstContext->width(); ++y) {
for (int x = 0; x < dstContext->height(); ++x) {
pixels.get()[y * dstContext->width() + x] =
GrPremulColor(GrColorPackRGBA(x, y, x + y, 2*y));
}
}
SkImageInfo ii = SkImageInfo::Make(dstContext->width(), dstContext->height(),
kRGBA_8888_SkColorType, kPremul_SkAlphaType);
bool write = dstContext->writePixels(ii, pixels.get(), 0, 0, 0);
if (!write) {
if (expectedToWork) {
ERRORF(reporter, "%s: Error writing to texture.", testName);
}
return;
}
if (write && !expectedToWork) {
ERRORF(reporter, "%s: writePixels succeeded when it wasn't supposed to.", testName);
return;
}
test_read_pixels(reporter, dstContext, pixels.get(), testName);
}
void test_copy_from_surface(skiatest::Reporter* reporter, GrContext* context,
GrSurfaceProxy* proxy, uint32_t expectedPixelValues[],
bool onlyTestRTConfig, const char* testName) {
GrSurfaceDesc copyDstDesc;
copyDstDesc.fConfig = kRGBA_8888_GrPixelConfig;
copyDstDesc.fWidth = proxy->width();
copyDstDesc.fHeight = proxy->height();
for (auto flags : { kNone_GrSurfaceFlags, kRenderTarget_GrSurfaceFlag }) {
if (kNone_GrSurfaceFlags == flags && onlyTestRTConfig) {
continue;
}
copyDstDesc.fFlags = flags;
copyDstDesc.fOrigin = (kNone_GrSurfaceFlags == flags) ? kTopLeft_GrSurfaceOrigin
: kBottomLeft_GrSurfaceOrigin;
sk_sp<GrSurfaceContext> dstContext(GrSurfaceProxy::TestCopy(context, copyDstDesc, proxy));
test_read_pixels(reporter, dstContext.get(), expectedPixelValues, testName);
}
}
void test_copy_to_surface(skiatest::Reporter* reporter, GrResourceProvider* resourceProvider,
GrSurfaceContext* dstContext, const char* testName) {
int pixelCnt = dstContext->width() * dstContext->height();
SkAutoTMalloc<uint32_t> pixels(pixelCnt);
for (int y = 0; y < dstContext->width(); ++y) {
for (int x = 0; x < dstContext->height(); ++x) {
pixels.get()[y * dstContext->width() + x] =
GrPremulColor(GrColorPackRGBA(y, x, x * y, 2*y));
}
}
GrSurfaceDesc copySrcDesc;
copySrcDesc.fConfig = kRGBA_8888_GrPixelConfig;
copySrcDesc.fWidth = dstContext->width();
copySrcDesc.fHeight = dstContext->height();
for (auto flags : { kNone_GrSurfaceFlags, kRenderTarget_GrSurfaceFlag }) {
copySrcDesc.fFlags = flags;
copySrcDesc.fOrigin = (kNone_GrSurfaceFlags == flags) ? kTopLeft_GrSurfaceOrigin
: kBottomLeft_GrSurfaceOrigin;
sk_sp<GrTextureProxy> src(GrSurfaceProxy::MakeDeferred(resourceProvider,
copySrcDesc,
SkBudgeted::kYes, pixels.get(), 0));
dstContext->copy(src.get());
test_read_pixels(reporter, dstContext, pixels.get(), testName);
}
}
#endif
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