Add API for flushing surfaces with gpu semaphores

BUG=skia:

Change-Id: Ia4bfef784cd5f2516ceccafce958be18a86f91d1
Reviewed-on: https://skia-review.googlesource.com/11488
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Forrest Reiling <freiling@google.com>

1 files changed, 172 insertions, 0 deletions

diff --git a/tests/SurfaceSemaphoreTest.cpp b/tests/SurfaceSemaphoreTest.cpp
new file mode 100644
index 0000000000..e9122bb464
--- /dev/null
+++ b/tests/SurfaceSemaphoreTest.cpp
@@ -0,0 +1,172 @@
+/*
+ * 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 "SkTypes.h"
+
+#if SK_SUPPORT_GPU
+#include "GrContextFactory.h"
+#include "GrTest.h"
+#include "Test.h"
+
+#include "GrBackendSemaphore.h"
+#include "GrBackendSurface.h"
+#include "SkCanvas.h"
+#include "SkSurface.h"
+
+#ifdef SK_VULKAN
+#include "vk/GrVkTypes.h"
+#endif
+
+static const int MAIN_W = 8, MAIN_H = 16;
+static const int CHILD_W = 16, CHILD_H = 16;
+
+void check_pixels(skiatest::Reporter* reporter, const SkBitmap& bitmap) {
+    const uint32_t* canvasPixels = static_cast<const uint32_t*>(bitmap.getPixels());
+
+    bool failureFound = false;
+    SkPMColor expectedPixel;
+    for (int cy = 0; cy < CHILD_H && !failureFound; ++cy) {
+        for (int cx = 0; cx < CHILD_W && !failureFound; ++cx) {
+            SkPMColor canvasPixel = canvasPixels[cy * CHILD_W + cx];
+            if (cy < CHILD_H / 2) {
+                if (cx < CHILD_W / 2) {
+                    expectedPixel = 0xFF0000FF; // Red
+                } else {
+                    expectedPixel = 0xFFFF0000; // Blue
+                }
+            } else {
+                expectedPixel = 0xFF00FF00; // Green
+            }
+            if (expectedPixel != canvasPixel) {
+                failureFound = true;
+                ERRORF(reporter, "Wrong color at %d, %d. Got 0x%08x when we expected 0x%08x",
+                       cx, cy, canvasPixel, expectedPixel);
+            }
+        }
+    }
+}
+
+void draw_child(skiatest::Reporter* reporter,
+                const sk_gpu_test::ContextInfo& childInfo,
+                const GrBackendObject& backendImage,
+                const GrBackendSemaphore& semaphore) {
+    GrBackendTexture backendTexture = GrTest::CreateBackendTexture(childInfo.backend(),
+                                                                   MAIN_W, MAIN_H,
+                                                                   kRGBA_8888_GrPixelConfig,
+                                                                   backendImage);
+
+    childInfo.testContext()->makeCurrent();
+
+    const SkImageInfo childII = SkImageInfo::Make(CHILD_W, CHILD_H, kRGBA_8888_SkColorType,
+                                                  kPremul_SkAlphaType);
+
+    GrContext* childCtx = childInfo.grContext();
+    sk_sp<SkSurface> childSurface(SkSurface::MakeRenderTarget(childCtx, SkBudgeted::kNo,
+                                                              childII, 0, kTopLeft_GrSurfaceOrigin,
+                                                              nullptr));
+
+    sk_sp<SkImage> childImage = SkImage::MakeFromTexture(childCtx,
+                                                         backendTexture,
+                                                         kTopLeft_GrSurfaceOrigin,
+                                                         kPremul_SkAlphaType,
+                                                         nullptr);
+
+    SkCanvas* childCanvas = childSurface->getCanvas();
+    childCanvas->clear(SK_ColorRED);
+
+    childSurface->wait(1, &semaphore);
+
+    childCanvas->drawImage(childImage, CHILD_W/2, 0);
+
+    SkPaint paint;
+    paint.setColor(SK_ColorGREEN);
+    SkIRect rect = SkIRect::MakeLTRB(0, CHILD_H/2, CHILD_W, CHILD_H);
+    childCanvas->drawIRect(rect, paint);
+
+    // read pixels
+    SkBitmap bitmap;
+    bitmap.allocPixels(childII);
+    childCanvas->readPixels(bitmap, 0, 0);
+
+    check_pixels(reporter, bitmap);
+}
+
+void surface_semaphore_test(skiatest::Reporter* reporter,
+                            const sk_gpu_test::ContextInfo& mainInfo,
+                            const sk_gpu_test::ContextInfo& childInfo1,
+                            const sk_gpu_test::ContextInfo& childInfo2) {
+
+    const SkImageInfo ii = SkImageInfo::Make(MAIN_W, MAIN_H, kRGBA_8888_SkColorType,
+                                             kPremul_SkAlphaType);
+
+    GrContext* mainCtx = mainInfo.grContext();
+    sk_sp<SkSurface> mainSurface(SkSurface::MakeRenderTarget(mainCtx, SkBudgeted::kNo,
+                                                             ii, 0, kTopLeft_GrSurfaceOrigin,
+                                                             nullptr));
+    SkCanvas* mainCanvas = mainSurface->getCanvas();
+    mainCanvas->clear(SK_ColorBLUE);
+
+    SkAutoTArray<GrBackendSemaphore> semaphores(2);
+
+    mainSurface->flushAndSignalSemaphores(2, semaphores.get());
+
+    sk_sp<SkImage> mainImage = mainSurface->makeImageSnapshot();
+    GrBackendObject backendImage = mainImage->getTextureHandle(false);
+
+    draw_child(reporter, childInfo1, backendImage, semaphores[0]);
+
+#ifdef SK_VULKAN
+    if (kVulkan_GrBackend == mainInfo.backend()) {
+        // In Vulkan we need to make sure we are sending the correct VkImageLayout in with the
+        // backendImage. After the first child draw the layout gets changed to SHADER_READ, so
+        // we just manually set that here.
+        GrVkImageInfo* vkInfo = (GrVkImageInfo*)backendImage;
+        vkInfo->updateImageLayout(VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
+    }
+#endif
+
+    draw_child(reporter, childInfo2, backendImage, semaphores[1]);
+}
+
+DEF_GPUTEST(SurfaceSemaphores, reporter, factory) {
+#if defined(SK_BUILD_FOR_UNIX) || defined(SK_BUILD_FOR_WIN) || defined(SK_BUILD_FOR_MAC)
+    static constexpr auto kNativeGLType = sk_gpu_test::GrContextFactory::kGL_ContextType;
+#else
+    static constexpr auto kNativeGLType = sk_gpu_test::GrContextFactory::kGLES_ContextType;
+#endif
+
+    for (int typeInt = 0; typeInt < sk_gpu_test::GrContextFactory::kContextTypeCnt; ++typeInt) {
+        sk_gpu_test::GrContextFactory::ContextType contextType =
+                (sk_gpu_test::GrContextFactory::ContextType) typeInt;
+        // Use "native" instead of explicitly trying OpenGL and OpenGL ES. Do not use GLES on
+        // desktop since tests do not account for not fixing http://skbug.com/2809
+        if (contextType == sk_gpu_test::GrContextFactory::kGL_ContextType ||
+            contextType == sk_gpu_test::GrContextFactory::kGLES_ContextType) {
+            if (contextType != kNativeGLType) {
+                continue;
+            }
+        }
+        sk_gpu_test::ContextInfo ctxInfo = factory->getContextInfo(
+                contextType, sk_gpu_test::GrContextFactory::ContextOverrides::kDisableNVPR);
+        if (!sk_gpu_test::GrContextFactory::IsRenderingContext(contextType)) {
+            continue;
+        }
+        skiatest::ReporterContext ctx(
+                reporter, SkString(sk_gpu_test::GrContextFactory::ContextTypeName(contextType)));
+        if (ctxInfo.grContext()) {
+            sk_gpu_test::ContextInfo child1 = factory->getSharedContextInfo(ctxInfo.grContext(), 0);
+            sk_gpu_test::ContextInfo child2 = factory->getSharedContextInfo(ctxInfo.grContext(), 1);
+            if (!child1.grContext() || !child2.grContext()) {
+                continue;
+            }
+
+            surface_semaphore_test(reporter, ctxInfo, child1, child2);
+        }
+    }
+}
+
+#endif