Add vulkan files into skia repo.

tests/VkClearTests.cpp

Index: tests/VkClearTests.cpp
diff --git a/tests/VkClearTests.cpp b/tests/VkClearTests.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..60e79815282ae952fe47d15dda3e0d1c04ef6e3f
--- /dev/null
+++ b/tests/VkClearTests.cpp
@@ -0,0 +1,218 @@
+
+/*
+ * Copyright 2015 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 GPU-backend specific test. It relies on static intializers to work
+
+#include "SkTypes.h"
+
+#if SK_SUPPORT_GPU && SK_ALLOW_STATIC_GLOBAL_INITIALIZERS && defined(SK_VULKAN)
+
+#include "GrContextFactory.h"
+#include "GrTest.h"
+#include "Test.h"
+#include "vk/GrVkGpu.h"
+
+bool does_full_buffer_contain_correct_color(GrColor* buffer,
+                                            GrColor clearColor,
+                                            GrPixelConfig config,
+                                            int width,
+                                            int height) {
+    GrColor matchColor;
+    if (kRGBA_8888_GrPixelConfig == config) {
+        matchColor = clearColor;
+    } else if (kBGRA_8888_GrPixelConfig) {
+        // Hack to flip the R, B componets in the GrColor so that the comparrison will work below
+        matchColor = GrColorPackRGBA(GrColorUnpackB(clearColor),
+                                     GrColorUnpackG(clearColor),
+                                     GrColorUnpackR(clearColor),
+                                     GrColorUnpackA(clearColor));
+    } else {
+        // currently only supporting rgba_8888 and bgra_8888
+        return false;
+    }
+
+    for (int j = 0; j < height; ++j) {
+        for (int i = 0; i < width; ++i) {
+            if (buffer[j * width + i] != matchColor) {
+                return false;
+            }
+        }
+    }
+    return true;
+}
+
+void basic_clear_test(skiatest::Reporter* reporter, GrContext* context, GrPixelConfig config) {
+    GrVkGpu* gpu = static_cast<GrVkGpu*>(context->getGpu());
+    gpu->discard(NULL);
+    SkAutoTMalloc<GrColor> buffer(25);
+
+    GrSurfaceDesc surfDesc;
+    surfDesc.fFlags = kRenderTarget_GrSurfaceFlag;
+    surfDesc.fOrigin = kTopLeft_GrSurfaceOrigin;
+    surfDesc.fWidth = 5;
+    surfDesc.fHeight = 5;
+    surfDesc.fConfig = config;
+    surfDesc.fSampleCnt = 0;
+    GrTexture* tex = gpu->createTexture(surfDesc, false, nullptr, 0);
+    SkASSERT(tex);
+    SkASSERT(tex->asRenderTarget());
+    SkIRect rect = SkIRect::MakeWH(5, 5);
+
+    gpu->clear(rect, GrColor_TRANSPARENT_BLACK, tex->asRenderTarget());
+
+    gpu->readPixels(tex, 0, 0, 5, 5, config, (void*)buffer.get(), 0);
+
+    REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(buffer.get(),
+                                                                     GrColor_TRANSPARENT_BLACK,
+                                                                     config,
+                                                                     5,
+                                                                     5));
+
+    gpu->clear(rect, GrColor_WHITE, tex->asRenderTarget());
+
+    gpu->readPixels(tex, 0, 0, 5, 5, config, (void*)buffer.get(), 0);
+
+    REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(buffer.get(),
+                                                                     GrColor_WHITE,
+                                                                     config,
+                                                                     5,
+                                                                     5));
+
+    GrColor myColor = GrColorPackRGBA(0xFF, 0x7F, 0x40, 0x20);
+
+    gpu->clear(rect, myColor, tex->asRenderTarget());
+
+    gpu->readPixels(tex, 0, 0, 5, 5, config, (void*)buffer.get(), 0);
+
+    REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(buffer.get(),
+                                                                     myColor,
+                                                                     config,
+                                                                     5,
+                                                                     5));
+}
+
+void sub_clear_test(skiatest::Reporter* reporter, GrContext* context, GrPixelConfig config) {
+    const int width = 10;
+    const int height = 10;
+    const int subWidth = width/2;
+    const int subHeight = height/2;
+    GrVkGpu* gpu = static_cast<GrVkGpu*>(context->getGpu());
+    gpu->discard(NULL);
+    SkAutoTMalloc<GrColor> buffer(width * height);
+    SkAutoTMalloc<GrColor> subBuffer(subWidth * subHeight);
+
+    GrSurfaceDesc surfDesc;
+    surfDesc.fFlags = kRenderTarget_GrSurfaceFlag;
+    surfDesc.fOrigin = kTopLeft_GrSurfaceOrigin;
+    surfDesc.fWidth = width;
+    surfDesc.fHeight = height;
+    surfDesc.fConfig = config;
+    surfDesc.fSampleCnt = 0;
+    GrTexture* tex = gpu->createTexture(surfDesc, false, nullptr, 0);
+    SkASSERT(tex);
+    SkASSERT(tex->asRenderTarget());
+
+    SkIRect fullRect = SkIRect::MakeWH(10, 10);
+    gpu->clear(fullRect, GrColor_TRANSPARENT_BLACK, tex->asRenderTarget());
+
+    gpu->readPixels(tex, 0, 0, width, height, config, (void*)buffer.get(), 0);
+
+    REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(buffer.get(),
+                                                                     GrColor_TRANSPARENT_BLACK,
+                                                                     config,
+                                                                     width,
+                                                                     height));
+    SkIRect rect;
+    rect = SkIRect::MakeXYWH(0, 0, subWidth, subHeight);
+    gpu->clear(rect, GrColor_WHITE, tex->asRenderTarget());
+    rect = SkIRect::MakeXYWH(subWidth, 0, subWidth, subHeight);
+    gpu->clear(rect, GrColor_WHITE, tex->asRenderTarget());
+    rect = SkIRect::MakeXYWH(0, subHeight, subWidth, subHeight);
+    gpu->clear(rect, GrColor_WHITE, tex->asRenderTarget());
+
+    // Should fail since bottom right sub area has not been cleared to white
+    gpu->readPixels(tex, 0, 0, width, height, config, (void*)buffer.get(), 0);
+    REPORTER_ASSERT(reporter, !does_full_buffer_contain_correct_color(buffer.get(),
+                                                                      GrColor_WHITE,
+                                                                      config,
+                                                                      width,
+                                                                      height));
+
+    rect = SkIRect::MakeXYWH(subWidth, subHeight, subWidth, subHeight);
+    gpu->clear(rect, GrColor_WHITE, tex->asRenderTarget());
+
+    gpu->readPixels(tex, 0, 0, width, height, config, (void*)buffer.get(), 0);
+    REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(buffer.get(),
+                                                                     GrColor_WHITE,
+                                                                     config,
+                                                                     width,
+                                                                     height));
+
+    // Try different colors and that each sub area has correct color
+    GrColor subColor1 = GrColorPackRGBA(0xFF, 0x00, 0x00, 0xFF);
+    GrColor subColor2 = GrColorPackRGBA(0x00, 0xFF, 0x00, 0xFF);
+    GrColor subColor3 = GrColorPackRGBA(0x00, 0x00, 0xFF, 0xFF);
+    GrColor subColor4 = GrColorPackRGBA(0xFF, 0xFF, 0x00, 0xFF);
+
+    rect = SkIRect::MakeXYWH(0, 0, subWidth, subHeight);
+    gpu->clear(rect, subColor1, tex->asRenderTarget());
+    rect = SkIRect::MakeXYWH(subWidth, 0, subWidth, subHeight);
+    gpu->clear(rect, subColor2, tex->asRenderTarget());
+    rect = SkIRect::MakeXYWH(0, subHeight, subWidth, subHeight);
+    gpu->clear(rect, subColor3, tex->asRenderTarget());
+    rect = SkIRect::MakeXYWH(subWidth, subHeight, subWidth, subHeight);
+    gpu->clear(rect, subColor4, tex->asRenderTarget());
+
+    gpu->readPixels(tex, 0, 0, subWidth, subHeight, config, (void*)subBuffer.get(), 0);
+    REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(subBuffer.get(),
+                                                                     subColor1,
+                                                                     config,
+                                                                     subWidth,
+                                                                     subHeight));
+    gpu->readPixels(tex, subWidth, 0, subWidth, subHeight, config, (void*)subBuffer.get(), 0);
+    REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(subBuffer.get(),
+                                                                     subColor2,
+                                                                     config,
+                                                                     subWidth,
+                                                                     subHeight));
+    gpu->readPixels(tex, 0, subHeight, subWidth, subHeight, config, (void*)subBuffer.get(), 0);
+    REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(subBuffer.get(),
+                                                                     subColor3,
+                                                                     config,
+                                                                     subWidth,
+                                                                     subHeight));
+    gpu->readPixels(tex, subWidth, subHeight, subWidth, subHeight,
+                    config, (void*)subBuffer.get(), 0);
+    REPORTER_ASSERT(reporter, does_full_buffer_contain_correct_color(subBuffer.get(),
+                                                                     subColor4,
+                                                                     config,
+                                                                     subWidth,
+                                                                     subHeight));
+}
+
+DEF_GPUTEST(VkClearTests, reporter, factory) {
+    GrContextOptions opts;
+    opts.fSuppressPrints = true;
+    GrContextFactory debugFactory(opts);
+    for (int type = 0; type < GrContextFactory::kLastGLContextType; ++type) {
+        if (static_cast<GrContextFactory::GLContextType>(type) !=
+            GrContextFactory::kNative_GLContextType) {
+            continue;
+        }
+        GrContext* context = debugFactory.get(static_cast<GrContextFactory::GLContextType>(type));
+        if (context) {
+            basic_clear_test(reporter, context, kRGBA_8888_GrPixelConfig);
+            basic_clear_test(reporter, context, kBGRA_8888_GrPixelConfig);
+            sub_clear_test(reporter, context, kRGBA_8888_GrPixelConfig);
+            sub_clear_test(reporter, context, kBGRA_8888_GrPixelConfig);
+        }
+
+    }
+}
+
+#endif