Title: [223315] trunk/Source
Revision
223315
Author
jer.no...@apple.com
Date
2017-10-13 19:38:09 -0700 (Fri, 13 Oct 2017)

Log Message

Performance: Skip texture upload if source image and destination texture haven't changed
https://bugs.webkit.org/show_bug.cgi?id=178254
<rdar://problem/34968181>

Reviewed by Dean Jackson.

Source/WebCore:

Update GraphicsContext3D to track which texture is bound to which texture unit, and also to
track when those bound textures have their backing stores modified. This new "seed" value
will be used to determine whether a given texture which has previously had image data
uploaded to it needs to be re-updated.

In VideoTextureCopierCV, track whether the texture's seed changed, whether the IOSurface is
the same,  whether the IOSurface's seed has changed, and whether the "flipY" parameter
changed since the last time the copier was asked to upload to the texture.

* platform/graphics/GraphicsContext3D.h:
(WebCore::GraphicsContext3D::textureSeed):
(WebCore::GraphicsContext3D::GraphicsContext3DState::currentBoundTexture):
(WebCore::GraphicsContext3D::GraphicsContext3DState::boundTexture):
(WebCore::GraphicsContext3D::GraphicsContext3DState::setBoundTexture):
* platform/graphics/cv/VideoTextureCopierCV.cpp:
(WebCore::VideoTextureCopierCV::copyImageToPlatformTexture):
* platform/graphics/cv/VideoTextureCopierCV.h:
(WebCore::VideoTextureCopierCV::lastTextureSeed):
* platform/graphics/opengl/GraphicsContext3DOpenGLCommon.cpp:
(WebCore::GraphicsContext3D::prepareTexture):
(WebCore::GraphicsContext3D::bindTexture):
(WebCore::GraphicsContext3D::texStorage2D):
(WebCore::GraphicsContext3D::texStorage3D):
(WebCore::GraphicsContext3D::framebufferTexture2D):
(WebCore::GraphicsContext3D::texSubImage2D):
(WebCore::GraphicsContext3D::compressedTexImage2D):
(WebCore::GraphicsContext3D::compressedTexSubImage2D):
(WebCore::GraphicsContext3D::createTexture):
(WebCore::GraphicsContext3D::deleteTexture):
(WebCore::GraphicsContext3D::texImage2DDirect):

Source/WTF:

Add a new class, UnsafePointer, for safely holding pointers to objects with uncontrolled lifetimes.

* WTF.xcodeproj/project.pbxproj:
* wtf/UnsafePointer.h: Added.
(WTF::UnsafePointer::UnsafePointer):
(WTF::UnsafePointer::operator== const):
(WTF::UnsafePointer::operator!= const):
(WTF::UnsafePointer::operator bool const):
(WTF::operator==):
(WTF::operator!=):

Modified Paths

Added Paths

Diff

Modified: trunk/Source/WTF/ChangeLog (223314 => 223315)


--- trunk/Source/WTF/ChangeLog	2017-10-14 00:50:39 UTC (rev 223314)
+++ trunk/Source/WTF/ChangeLog	2017-10-14 02:38:09 UTC (rev 223315)
@@ -1,3 +1,22 @@
+2017-10-13  Jer Noble  <jer.no...@apple.com>
+
+        Performance: Skip texture upload if source image and destination texture haven't changed
+        https://bugs.webkit.org/show_bug.cgi?id=178254
+        <rdar://problem/34968181>
+
+        Reviewed by Dean Jackson.
+
+        Add a new class, UnsafePointer, for safely holding pointers to objects with uncontrolled lifetimes.
+
+        * WTF.xcodeproj/project.pbxproj:
+        * wtf/UnsafePointer.h: Added.
+        (WTF::UnsafePointer::UnsafePointer):
+        (WTF::UnsafePointer::operator== const):
+        (WTF::UnsafePointer::operator!= const):
+        (WTF::UnsafePointer::operator bool const):
+        (WTF::operator==):
+        (WTF::operator!=):
+
 2017-10-13  Per Arne Vollan  <pvol...@apple.com>
 
         [Win] When built with VS2017, MiniBrowser crashes on startup.

Modified: trunk/Source/WTF/WTF.xcodeproj/project.pbxproj (223314 => 223315)


--- trunk/Source/WTF/WTF.xcodeproj/project.pbxproj	2017-10-14 00:50:39 UTC (rev 223314)
+++ trunk/Source/WTF/WTF.xcodeproj/project.pbxproj	2017-10-14 02:38:09 UTC (rev 223315)
@@ -562,6 +562,7 @@
 		CD5497AA15857D0300B5BC30 /* MediaTime.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = MediaTime.cpp; sourceTree = "<group>"; };
 		CD5497AB15857D0300B5BC30 /* MediaTime.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MediaTime.h; sourceTree = "<group>"; };
 		CD6D9FCD1EEF3AD4008B0671 /* Algorithms.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = Algorithms.h; sourceTree = "<group>"; };
+		CD7600FF1F90A3CA00026E26 /* UnsafePointer.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = UnsafePointer.h; sourceTree = "<group>"; };
 		CE46516D19DB1FB4003ECA05 /* NSMapTableSPI.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = NSMapTableSPI.h; sourceTree = "<group>"; };
 		CE73E02419DCB7AB00580D5C /* XPCSPI.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = XPCSPI.h; sourceTree = "<group>"; };
 		DCEE21FA1CEA7538000C2396 /* CFBundleSPI.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = CFBundleSPI.h; path = cf/CFBundleSPI.h; sourceTree = "<group>"; };
@@ -1015,6 +1016,7 @@
 				83FBA93119DF459700F30ADB /* TypeCasts.h */,
 				A8A4735C151A825B004123FF /* UnionFind.h */,
 				5C7C88D31D0A3A0A009D2F6D /* UniqueRef.h */,
+				CD7600FF1F90A3CA00026E26 /* UnsafePointer.h */,
 				7AFEC6B01EB22B5900DADE36 /* UUID.cpp */,
 				7AFEC6AE1EB22AC600DADE36 /* UUID.h */,
 				A8A4736F151A825B004123FF /* ValueCheck.h */,

Added: trunk/Source/WTF/wtf/UnsafePointer.h (0 => 223315)


--- trunk/Source/WTF/wtf/UnsafePointer.h	                        (rev 0)
+++ trunk/Source/WTF/wtf/UnsafePointer.h	2017-10-14 02:38:09 UTC (rev 223315)
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2017 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+namespace WTF {
+
+// A UnsafePointer<> can be used to hold a pointer whose lifetime is not guaranteed
+// and where the dereferencing of that pointer is therefore unsafe. Once assigned
+// to an UnsafePoniter<>, the pointer itself cannot be extracted from the class, but
+// the class can still be used to test for pointer equality.
+template<typename T>
+class UnsafePointer {
+public:
+    typedef typename std::remove_pointer<T>::type ValueType;
+    typedef ValueType* PtrType;
+
+    UnsafePointer() : m_pointer(nullptr) { }
+    UnsafePointer(PtrType pointer) : m_pointer(pointer) { }
+
+    bool operator==(PtrType pointer) const { return pointer == m_pointer; }
+    bool operator!=(PtrType pointer) const { return pointer != m_pointer; }
+    operator bool() const { return m_pointer; }
+
+private:
+    PtrType m_pointer;
+};
+
+template<typename T>
+bool operator==(typename UnsafePointer<T>::PtrType barePointer, const UnsafePointer<T>& unsafePointer)
+{
+    return unsafePointer == barePointer;
+}
+
+template<typename T>
+bool operator!=(typename UnsafePointer<T>::PtrType barePointer, const UnsafePointer<T>& unsafePointer)
+{
+    return unsafePointer != barePointer;
+}
+
+} // namespace WTF
+
+using WTF::UnsafePointer;

Modified: trunk/Source/WebCore/ChangeLog (223314 => 223315)


--- trunk/Source/WebCore/ChangeLog	2017-10-14 00:50:39 UTC (rev 223314)
+++ trunk/Source/WebCore/ChangeLog	2017-10-14 02:38:09 UTC (rev 223315)
@@ -1,3 +1,42 @@
+2017-10-13  Jer Noble  <jer.no...@apple.com>
+
+        Performance: Skip texture upload if source image and destination texture haven't changed
+        https://bugs.webkit.org/show_bug.cgi?id=178254
+        <rdar://problem/34968181>
+
+        Reviewed by Dean Jackson.
+
+        Update GraphicsContext3D to track which texture is bound to which texture unit, and also to
+        track when those bound textures have their backing stores modified. This new "seed" value
+        will be used to determine whether a given texture which has previously had image data
+        uploaded to it needs to be re-updated.
+
+        In VideoTextureCopierCV, track whether the texture's seed changed, whether the IOSurface is
+        the same,  whether the IOSurface's seed has changed, and whether the "flipY" parameter
+        changed since the last time the copier was asked to upload to the texture.
+
+        * platform/graphics/GraphicsContext3D.h:
+        (WebCore::GraphicsContext3D::textureSeed):
+        (WebCore::GraphicsContext3D::GraphicsContext3DState::currentBoundTexture):
+        (WebCore::GraphicsContext3D::GraphicsContext3DState::boundTexture):
+        (WebCore::GraphicsContext3D::GraphicsContext3DState::setBoundTexture):
+        * platform/graphics/cv/VideoTextureCopierCV.cpp:
+        (WebCore::VideoTextureCopierCV::copyImageToPlatformTexture):
+        * platform/graphics/cv/VideoTextureCopierCV.h:
+        (WebCore::VideoTextureCopierCV::lastTextureSeed):
+        * platform/graphics/opengl/GraphicsContext3DOpenGLCommon.cpp:
+        (WebCore::GraphicsContext3D::prepareTexture):
+        (WebCore::GraphicsContext3D::bindTexture):
+        (WebCore::GraphicsContext3D::texStorage2D):
+        (WebCore::GraphicsContext3D::texStorage3D):
+        (WebCore::GraphicsContext3D::framebufferTexture2D):
+        (WebCore::GraphicsContext3D::texSubImage2D):
+        (WebCore::GraphicsContext3D::compressedTexImage2D):
+        (WebCore::GraphicsContext3D::compressedTexSubImage2D):
+        (WebCore::GraphicsContext3D::createTexture):
+        (WebCore::GraphicsContext3D::deleteTexture):
+        (WebCore::GraphicsContext3D::texImage2DDirect):
+
 2017-10-13  Per Arne Vollan  <pvol...@apple.com>
 
         [Win] When built with VS2017, MiniBrowser crashes on startup.

Modified: trunk/Source/WebCore/platform/graphics/GraphicsContext3D.h (223314 => 223315)


--- trunk/Source/WebCore/platform/graphics/GraphicsContext3D.h	2017-10-14 00:50:39 UTC (rev 223314)
+++ trunk/Source/WebCore/platform/graphics/GraphicsContext3D.h	2017-10-14 02:38:09 UTC (rev 223315)
@@ -32,6 +32,7 @@
 #include "IntRect.h"
 #include "PlatformLayer.h"
 #include <memory>
+#include <wtf/HashCountedSet.h>
 #include <wtf/HashMap.h>
 #include <wtf/ListHashSet.h>
 #include <wtf/RefCounted.h>
@@ -1281,6 +1282,8 @@
 
     void setFailNextGPUStatusCheck() { m_failNextStatusCheck = true; }
 
+    unsigned textureSeed(GC3Duint texture) { return m_state.textureSeedCount.count(texture); }
+
 private:
     GraphicsContext3D(GraphicsContext3DAttributes, HostWindow*, RenderStyle = RenderOffscreen);
 
@@ -1426,7 +1429,38 @@
     struct GraphicsContext3DState {
         GC3Duint boundFBO { 0 };
         GC3Denum activeTexture { GraphicsContext3D::TEXTURE0 };
-        GC3Duint boundTexture0 { 0 };
+
+        using BoundTextureMap = HashMap<GC3Denum,
+            std::pair<GC3Duint, GC3Denum>,
+            WTF::IntHash<GC3Denum>, 
+            WTF::UnsignedWithZeroKeyHashTraits<GC3Duint>,
+            WTF::PairHashTraits<WTF::UnsignedWithZeroKeyHashTraits<GC3Duint>, WTF::UnsignedWithZeroKeyHashTraits<GC3Duint>>
+        >;
+        BoundTextureMap boundTextureMap;
+        GC3Duint currentBoundTexture() { return boundTexture(activeTexture); }
+        GC3Duint boundTexture(GC3Denum textureUnit)
+        {
+            auto iterator = boundTextureMap.find(textureUnit);
+            if (iterator != boundTextureMap.end())
+                return iterator->value.first;
+            return 0;
+        }
+
+        GC3Denum boundTarget(GC3Denum textureUnit)
+        {
+            auto iterator = boundTextureMap.find(textureUnit);
+            if (iterator != boundTextureMap.end())
+                return iterator->value.second;
+            return 0;
+        }
+
+        void setBoundTexture(GC3Denum textureUnit, GC3Duint texture, GC3Denum target)
+        {
+            boundTextureMap.set(textureUnit, std::make_pair(texture, target));
+        }
+
+        using TextureSeedCount = HashCountedSet<GC3Duint, WTF::IntHash<GC3Duint>, WTF::UnsignedWithZeroKeyHashTraits<GC3Duint>>;
+        TextureSeedCount textureSeedCount;
     };
 
     GraphicsContext3DState m_state;

Modified: trunk/Source/WebCore/platform/graphics/cv/VideoTextureCopierCV.cpp (223314 => 223315)


--- trunk/Source/WebCore/platform/graphics/cv/VideoTextureCopierCV.cpp	2017-10-14 00:50:39 UTC (rev 223314)
+++ trunk/Source/WebCore/platform/graphics/cv/VideoTextureCopierCV.cpp	2017-10-14 02:38:09 UTC (rev 223315)
@@ -516,6 +516,17 @@
     if (!surface)
         return false;
 
+    auto newSurfaceSeed = IOSurfaceGetSeed(surface);
+    auto newTextureSeed = m_context->textureSeed(outputTexture);
+    if (flipY == m_lastFlipY
+        && surface == m_lastSurface 
+        && newSurfaceSeed == m_lastSurfaceSeed
+        && lastTextureSeed(outputTexture) == newTextureSeed) {
+        // If the texture hasn't been modified since the last time we copied to it, and the
+        // image hasn't been modified since the last time it was copied, this is a no-op.
+        return true;
+    }
+
     GC3DStateSaver stateSaver(m_context.get());
 
     if (!m_yuvProgram) {
@@ -606,6 +617,11 @@
     m_context->deleteTexture(uvTexture);
     m_context->bindTexture(videoTextureTarget, 0);
 
+    m_lastSurface = surface;
+    m_lastSurfaceSeed = newSurfaceSeed;
+    m_lastTextureSeed.set(outputTexture, newTextureSeed);
+    m_lastFlipY = flipY;
+
     return true;
 #else
     return false;

Modified: trunk/Source/WebCore/platform/graphics/cv/VideoTextureCopierCV.h (223314 => 223315)


--- trunk/Source/WebCore/platform/graphics/cv/VideoTextureCopierCV.h	2017-10-14 00:50:39 UTC (rev 223314)
+++ trunk/Source/WebCore/platform/graphics/cv/VideoTextureCopierCV.h	2017-10-14 02:38:09 UTC (rev 223315)
@@ -27,6 +27,7 @@
 #define VideoTextureCopierCV_h
 
 #import "GraphicsContext3D.h"
+#import <wtf/UnsafePointer.h>
 
 typedef struct __CVBuffer* CVImageBufferRef;
 typedef struct __CVBuffer* CVPixelBufferRef;
@@ -83,6 +84,14 @@
     bool initializeContextObjects();
     bool initializeUVContextObjects();
 
+#if USE(IOSURFACE)
+    unsigned lastTextureSeed(GC3Duint texture)
+    {
+        auto iterator = m_lastTextureSeed.find(texture);
+        return iterator == m_lastTextureSeed.end() ? 0 : iterator->value;
+    }
+#endif
+
     Ref<GraphicsContext3D> m_context;
     std::unique_ptr<TextureCacheCV> m_textureCache;
     Platform3DObject m_framebuffer { 0 };
@@ -102,6 +111,15 @@
     GC3Dint m_yuvPositionAttributeLocation { -1 };
     GC3Dint m_yTextureSizeUniformLocation { -1 };
     GC3Dint m_uvTextureSizeUniformLocation { -1 };
+
+#if USE(IOSURFACE)
+    bool m_lastFlipY { false };
+    UnsafePointer<IOSurfaceRef> m_lastSurface;
+    uint32_t m_lastSurfaceSeed { 0 };
+
+    using TextureSeedMap = HashMap<GC3Duint, unsigned, WTF::IntHash<GC3Duint>, WTF::UnsignedWithZeroKeyHashTraits<GC3Duint>>;
+    TextureSeedMap m_lastTextureSeed;
+#endif
 };
 
 }

Modified: trunk/Source/WebCore/platform/graphics/opengl/GraphicsContext3DOpenGLCommon.cpp (223314 => 223315)


--- trunk/Source/WebCore/platform/graphics/opengl/GraphicsContext3DOpenGLCommon.cpp	2017-10-14 00:50:39 UTC (rev 223314)
+++ trunk/Source/WebCore/platform/graphics/opengl/GraphicsContext3DOpenGLCommon.cpp	2017-10-14 02:38:09 UTC (rev 223315)
@@ -261,7 +261,7 @@
 #endif
 
     ::glActiveTexture(GL_TEXTURE0);
-    ::glBindTexture(GL_TEXTURE_2D, m_state.boundTexture0);
+    ::glBindTexture(GL_TEXTURE_2D, m_state.boundTarget(GL_TEXTURE0) == GL_TEXTURE_2D ? m_state.boundTexture(GL_TEXTURE0) : 0);
     ::glActiveTexture(m_state.activeTexture);
     if (m_state.boundFBO != m_fbo)
         ::glBindFramebufferEXT(GraphicsContext3D::FRAMEBUFFER, m_state.boundFBO);
@@ -505,8 +505,7 @@
 void GraphicsContext3D::bindTexture(GC3Denum target, Platform3DObject texture)
 {
     makeContextCurrent();
-    if (m_state.activeTexture == GL_TEXTURE0 && target == GL_TEXTURE_2D)
-        m_state.boundTexture0 = texture;
+    m_state.setBoundTexture(m_state.activeTexture, texture, target);
     ::glBindTexture(target, texture);
 }
 
@@ -582,6 +581,7 @@
 {
     makeContextCurrent();
     ::glTexStorage2D(target, levels, internalformat, width, height);
+    m_state.textureSeedCount.add(m_state.currentBoundTexture());
 }
 
 void GraphicsContext3D::texStorage3D(GC3Denum target, GC3Dsizei levels, GC3Denum internalformat, GC3Dsizei width, GC3Dsizei height, GC3Dsizei depth)
@@ -588,6 +588,7 @@
 {
     makeContextCurrent();
     ::glTexStorage3D(target, levels, internalformat, width, height, depth);
+    m_state.textureSeedCount.add(m_state.currentBoundTexture());
 }
 
 void GraphicsContext3D::getActiveUniforms(Platform3DObject program, const Vector<GC3Duint>& uniformIndices, GC3Denum pname, Vector<GC3Dint>& params)
@@ -838,6 +839,7 @@
 {
     makeContextCurrent();
     ::glFramebufferTexture2DEXT(target, attachment, textarget, texture, level);
+    m_state.textureSeedCount.add(m_state.currentBoundTexture());
 }
 
 void GraphicsContext3D::frontFace(GC3Denum mode)
@@ -1874,6 +1876,7 @@
 
     // FIXME: we will need to deal with PixelStore params when dealing with image buffers that differ from the subimage size.
     ::glTexSubImage2D(target, level, xoff, yoff, width, height, format, type, pixels);
+    m_state.textureSeedCount.add(m_state.currentBoundTexture());
 }
 
 void GraphicsContext3D::compressedTexImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, GC3Dsizei width, GC3Dsizei height, GC3Dint border, GC3Dsizei imageSize, const void* data)
@@ -1880,6 +1883,7 @@
 {
     makeContextCurrent();
     ::glCompressedTexImage2D(target, level, internalformat, width, height, border, imageSize, data);
+    m_state.textureSeedCount.add(m_state.currentBoundTexture());
 }
 
 void GraphicsContext3D::compressedTexSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, GC3Dsizei width, GC3Dsizei height, GC3Denum format, GC3Dsizei imageSize, const void* data)
@@ -1886,6 +1890,7 @@
 {
     makeContextCurrent();
     ::glCompressedTexSubImage2D(target, level, xoffset, yoffset, width, height, format, imageSize, data);
+    m_state.textureSeedCount.add(m_state.currentBoundTexture());
 }
 
 Platform3DObject GraphicsContext3D::createBuffer()
@@ -1929,6 +1934,7 @@
     makeContextCurrent();
     GLuint o = 0;
     glGenTextures(1, &o);
+    m_state.textureSeedCount.add(o);
     return o;
 }
 
@@ -1971,9 +1977,11 @@
 void GraphicsContext3D::deleteTexture(Platform3DObject texture)
 {
     makeContextCurrent();
-    if (m_state.boundTexture0 == texture)
-        m_state.boundTexture0 = 0;
+    m_state.boundTextureMap.removeIf([texture] (auto& keyValue) {
+        return keyValue.value.first == texture;
+    });
     glDeleteTextures(1, &texture);
+    m_state.textureSeedCount.removeAll(texture);
 }
 
 void GraphicsContext3D::synthesizeGLError(GC3Denum error)
@@ -2028,6 +2036,7 @@
 {
     makeContextCurrent();
     ::glTexImage2D(target, level, internalformat, width, height, border, format, type, pixels);
+    m_state.textureSeedCount.add(m_state.currentBoundTexture());
 }
 
 void GraphicsContext3D::drawArraysInstanced(GC3Denum mode, GC3Dint first, GC3Dsizei count, GC3Dsizei primcount)
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