From 144ccd9c8dba05ffaa0ae598f9b70032050fc20e Mon Sep 17 00:00:00 2001
From: Derek Sollenberger <djsollen@google.com>
Date: Thu, 4 Nov 2010 16:22:28 -0400
Subject: Revert "Support partial invalidation of tiles based on webkit's inval
 rect."

This reverts commit fc92ca2409a95b539274985812d88016b6b84b7e.
---
 .../android/BackedDoubleBufferedTexture.cpp        | 38 ++++++++++++++++++----
 1 file changed, 32 insertions(+), 6 deletions(-)

(limited to 'WebCore/platform/graphics/android/BackedDoubleBufferedTexture.cpp')

diff --git a/WebCore/platform/graphics/android/BackedDoubleBufferedTexture.cpp b/WebCore/platform/graphics/android/BackedDoubleBufferedTexture.cpp
index 1a8e686..7cecddd 100644
--- a/WebCore/platform/graphics/android/BackedDoubleBufferedTexture.cpp
+++ b/WebCore/platform/graphics/android/BackedDoubleBufferedTexture.cpp
@@ -56,27 +56,28 @@ BackedDoubleBufferedTexture::~BackedDoubleBufferedTexture()
 
 TextureInfo* BackedDoubleBufferedTexture::producerLock()
 {
-    m_busyLock.lock();
+    m_varLock.lock();
     m_busy = true;
-    m_busyLock.unlock();
+    m_varLock.unlock();
     return DoubleBufferedTexture::producerLock();
 }
 
 void BackedDoubleBufferedTexture::producerRelease()
 {
     DoubleBufferedTexture::producerRelease();
-    android::Mutex::Autolock lock(m_busyLock);
+    android::Mutex::Autolock lock(m_varLock);
     m_busy = false;
 }
 
 void BackedDoubleBufferedTexture::producerReleaseAndSwap()
 {
     DoubleBufferedTexture::producerReleaseAndSwap();
-    android::Mutex::Autolock lock(m_busyLock);
+    android::Mutex::Autolock lock(m_varLock);
     m_busy = false;
 }
 
-void BackedDoubleBufferedTexture::producerUpdate(TextureInfo* textureInfo)
+void BackedDoubleBufferedTexture::producerUpdate(BaseTile* painter,
+        TextureInfo* textureInfo, PaintingInfo& info)
 {
     // no need to upload a texture since the bitmap is empty
     if (!m_bitmap.width() && !m_bitmap.height()) {
@@ -92,9 +93,34 @@ void BackedDoubleBufferedTexture::producerUpdate(TextureInfo* textureInfo)
         textureInfo->m_height = m_bitmap.height();
     }
 
+    m_varLock.lock();
+    // set the painting information for this texture
+    if (equalsIdTextureA(textureInfo->m_textureId))
+        m_paintingInfoA = info;
+    else if (equalsIdTextureB(textureInfo->m_textureId))
+        m_paintingInfoB = info;
+    m_varLock.unlock();
+
     producerReleaseAndSwap();
 }
 
+// Compare the current texture displayed with some PaintingInfo.
+bool BackedDoubleBufferedTexture::consumerTextureUpToDate(PaintingInfo& info)
+{
+    android::Mutex::Autolock lock(m_varLock);
+    if (isTextureAReadable())
+        return info == m_paintingInfoA;
+    return info == m_paintingInfoB;
+}
+
+bool BackedDoubleBufferedTexture::consumerTextureSimilar(PaintingInfo& info)
+{
+    android::Mutex::Autolock lock(m_varLock);
+    if (isTextureAReadable())
+        return info.similar(m_paintingInfoA);
+    return info.similar(m_paintingInfoB);
+}
+
 bool BackedDoubleBufferedTexture::acquire(BaseTile* owner)
 {
     if (m_owner == owner)
@@ -102,7 +128,7 @@ bool BackedDoubleBufferedTexture::acquire(BaseTile* owner)
 
     // if the writable texture is busy (i.e. currently being written to) then we
     // can't change the owner out from underneath that texture
-    android::Mutex::Autolock lock(m_busyLock);
+    android::Mutex::Autolock lock(m_varLock);
     if (!m_busy) {
         if (m_owner)
             m_owner->removeTexture();
-- 
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