Consolidate read/write-Pixels testing code - take 2
Change-Id: I0de058a9eec749a7086138ac2eb79732f06ce55e
Reviewed-on: https://skia-review.googlesource.com/7650
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
diff --git a/tests/TestUtils.cpp b/tests/TestUtils.cpp
new file mode 100644
index 0000000..b809a67
--- /dev/null
+++ b/tests/TestUtils.cpp
@@ -0,0 +1,119 @@
+/*
+ * 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"
+
+void test_read_pixels(skiatest::Reporter* reporter, GrContext* context,
+ 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, GrContext* context,
+ 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, context, 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;
+
+ sk_sp<GrSurfaceContext> dstContext(GrSurfaceProxy::TestCopy(context, copyDstDesc, proxy));
+
+ test_read_pixels(reporter, context, dstContext.get(), expectedPixelValues, testName);
+ }
+}
+
+void test_copy_to_surface(skiatest::Reporter* reporter, GrContext* context,
+ 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;
+
+ sk_sp<GrSurfaceProxy> src(GrSurfaceProxy::MakeDeferred(*context->caps(),
+ context->textureProvider(),
+ copySrcDesc,
+ SkBudgeted::kYes, pixels.get(), 0));
+ dstContext->copy(src.get());
+
+ test_read_pixels(reporter, context, dstContext, pixels.get(), testName);
+ }
+}
+
+#endif