Add ShadowBench

Drop -O3 & -ffast-math as they don't
help on clang and just hit SIGBUS issues

Change-Id: I8e9a8f4cd9ddf136103a6b7f69902e9f3a730c57

5 files changed, 140 insertions, 10 deletions

diff --git a/libs/hwui/Android.mk b/libs/hwui/Android.mk
index 842f575553a5..4c1386cb7a64 100644
--- a/libs/hwui/Android.mk
+++ b/libs/hwui/Android.mk
@@ -84,8 +84,7 @@ hwui_src_files := \
 hwui_cflags := \
     -DEGL_EGLEXT_PROTOTYPES -DGL_GLEXT_PROTOTYPES \
     -DATRACE_TAG=ATRACE_TAG_VIEW -DLOG_TAG=\"OpenGLRenderer\" \
-    -Wall -Wno-unused-parameter -Wunreachable-code \
-    -ffast-math -O3 -Werror
+    -Wall -Wno-unused-parameter -Wunreachable-code -Werror
 
 ifeq (true, $(HWUI_NEW_OPS))
     hwui_src_files += \
@@ -261,7 +260,8 @@ LOCAL_STATIC_LIBRARIES := libbenchmark libbase
 
 LOCAL_SRC_FILES += \
     microbench/DisplayListCanvasBench.cpp \
-    microbench/LinearAllocatorBench.cpp
+    microbench/LinearAllocatorBench.cpp \
+    microbench/ShadowBench.cpp
 
 ifeq (true, $(HWUI_NEW_OPS))
     LOCAL_SRC_FILES += \
diff --git a/libs/hwui/TessellationCache.cpp b/libs/hwui/TessellationCache.cpp
index 12a3e76c9387..0835c29aee97 100644
--- a/libs/hwui/TessellationCache.cpp
+++ b/libs/hwui/TessellationCache.cpp
@@ -217,7 +217,7 @@ static void reverseVertexArray(Vertex* polygon, int len) {
     }
 }
 
-static void tessellateShadows(
+void tessellateShadows(
         const Matrix4* drawTransform, const Rect* localClip,
         bool isCasterOpaque, const SkPath* casterPerimeter,
         const Matrix4* casterTransformXY, const Matrix4* casterTransformZ,
diff --git a/libs/hwui/TessellationCache.h b/libs/hwui/TessellationCache.h
index b54666b7d595..06e567e114e2 100644
--- a/libs/hwui/TessellationCache.h
+++ b/libs/hwui/TessellationCache.h
@@ -17,16 +17,22 @@
 #ifndef ANDROID_HWUI_TESSELLATION_CACHE_H
 #define ANDROID_HWUI_TESSELLATION_CACHE_H
 
-#include <utils/LruCache.h>
-#include <utils/Mutex.h>
-
 #include "Debug.h"
+#include "Matrix.h"
+#include "Rect.h"
+#include "Vector.h"
+#include "thread/TaskProcessor.h"
 #include "utils/Macros.h"
 #include "utils/Pair.h"
 
+#include <SkPaint.h>
+
+#include <utils/LruCache.h>
+#include <utils/Mutex.h>
+#include <utils/StrongPointer.h>
+
 class SkBitmap;
 class SkCanvas;
-class SkPaint;
 class SkPath;
 struct SkRect;
 
@@ -185,6 +191,13 @@ private:
 
 }; // class TessellationCache
 
+void tessellateShadows(
+        const Matrix4* drawTransform, const Rect* localClip,
+        bool isCasterOpaque, const SkPath* casterPerimeter,
+        const Matrix4* casterTransformXY, const Matrix4* casterTransformZ,
+        const Vector3& lightCenter, float lightRadius,
+        VertexBuffer& ambientBuffer, VertexBuffer& spotBuffer);
+
 }; // namespace uirenderer
 }; // namespace android
 
diff --git a/libs/hwui/Vector.h b/libs/hwui/Vector.h
index 7c3f2fd379e4..6367dbd7b660 100644
--- a/libs/hwui/Vector.h
+++ b/libs/hwui/Vector.h
@@ -135,8 +135,8 @@ public:
     }
 
 
-    void dump() {
-        ALOGD("Vector3[%.2f, %.2f, %.2f]", x, y, z);
+    void dump(const char* label = "Vector3") const {
+        ALOGD("%s[%.2f, %.2f, %.2f]", label, x, y, z);
     }
 };
 
diff --git a/libs/hwui/microbench/ShadowBench.cpp b/libs/hwui/microbench/ShadowBench.cpp
new file mode 100644
index 000000000000..bd5169391e3d
--- /dev/null
+++ b/libs/hwui/microbench/ShadowBench.cpp
@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <benchmark/Benchmark.h>
+
+#include "Matrix.h"
+#include "Rect.h"
+#include "Vector.h"
+#include "VertexBuffer.h"
+#include "TessellationCache.h"
+#include "microbench/MicroBench.h"
+
+#include <SkPath.h>
+
+#include <memory>
+
+using namespace android;
+using namespace android::uirenderer;
+
+struct ShadowTestData {
+    Matrix4 drawTransform;
+    Rect localClip;
+    Matrix4 casterTransformXY;
+    Matrix4 casterTransformZ;
+    Vector3 lightCenter;
+    float lightRadius;
+};
+
+void createShadowTestData(ShadowTestData* out) {
+    static float SAMPLE_DRAW_TRANSFORM[] = {
+            1, 0, 0, 0,
+            0, 1, 0, 0,
+            0, 0, 1, 0,
+            0, 0, 0, 1,
+    };
+    static float SAMPLE_CASTERXY[] = {
+            1, 0, 0, 0,
+            0, 1, 0, 0,
+            0, 0, 1, 0,
+            32, 32, 0, 1,
+    };
+    static float SAMPLE_CASTERZ[] = {
+            1, 0, 0, 0,
+            0, 1, 0, 0,
+            0, 0, 1, 0,
+            32, 32, 32, 1,
+    };
+    static Rect SAMPLE_CLIP(0, 0, 1536, 2048);
+    static Vector3 SAMPLE_LIGHT_CENTER{768, -400, 1600};
+    static float SAMPLE_LIGHT_RADIUS = 1600;
+
+    out->drawTransform.load(SAMPLE_DRAW_TRANSFORM);
+    out->localClip = SAMPLE_CLIP;
+    out->casterTransformXY.load(SAMPLE_CASTERXY);
+    out->casterTransformZ.load(SAMPLE_CASTERZ);
+    out->lightCenter = SAMPLE_LIGHT_CENTER;
+    out->lightRadius = SAMPLE_LIGHT_RADIUS;
+}
+
+static inline void tessellateShadows(ShadowTestData& testData, bool opaque,
+        const SkPath& shape, VertexBuffer* ambient, VertexBuffer* spot) {
+    tessellateShadows(&testData.drawTransform, &testData.localClip,
+            opaque, &shape, &testData.casterTransformXY,
+            &testData.casterTransformZ, testData.lightCenter,
+            testData.lightRadius, *ambient, *spot);
+}
+
+BENCHMARK_NO_ARG(BM_TessellateShadows_roundrect_opaque);
+void BM_TessellateShadows_roundrect_opaque::Run(int iters) {
+    ShadowTestData shadowData;
+    createShadowTestData(&shadowData);
+    SkPath path;
+    path.reset();
+    path.addRoundRect(SkRect::MakeLTRB(0, 0, 100, 100), 5, 5);
+
+    StartBenchmarkTiming();
+    for (int i = 0; i < iters; i++) {
+        std::unique_ptr<VertexBuffer> ambient(new VertexBuffer);
+        std::unique_ptr<VertexBuffer> spot(new VertexBuffer);
+        tessellateShadows(shadowData, true, path, ambient.get(), spot.get());
+        MicroBench::DoNotOptimize(ambient.get());
+        MicroBench::DoNotOptimize(spot.get());
+    }
+    StopBenchmarkTiming();
+}
+
+BENCHMARK_NO_ARG(BM_TessellateShadows_roundrect_translucent);
+void BM_TessellateShadows_roundrect_translucent::Run(int iters) {
+    ShadowTestData shadowData;
+    createShadowTestData(&shadowData);
+    SkPath path;
+    path.reset();
+    path.addRoundRect(SkRect::MakeLTRB(0, 0, 100, 100), 5, 5);
+
+    StartBenchmarkTiming();
+    for (int i = 0; i < iters; i++) {
+        std::unique_ptr<VertexBuffer> ambient(new VertexBuffer);
+        std::unique_ptr<VertexBuffer> spot(new VertexBuffer);
+        tessellateShadows(shadowData, false, path, ambient.get(), spot.get());
+        MicroBench::DoNotOptimize(ambient.get());
+        MicroBench::DoNotOptimize(spot.get());
+    }
+    StopBenchmarkTiming();
+}