Implement WEBGL_shared_resources

Source/core/html/canvas/WebGLProgram.cpp

Index: Source/core/html/canvas/WebGLProgram.cpp
diff --git a/Source/core/html/canvas/WebGLProgram.cpp b/Source/core/html/canvas/WebGLProgram.cpp
index 5581744f8bbc056fb5d9f67375f292393af78667..e87370d23dfb3d8693eb7b930a98bed25c739827 100644
--- a/Source/core/html/canvas/WebGLProgram.cpp
+++ b/Source/core/html/canvas/WebGLProgram.cpp
@@ -64,39 +64,40 @@ void WebGLProgram::deleteObjectImpl(GraphicsContext3D* context3d, Platform3DObje
     }
 }
 
-unsigned WebGLProgram::numActiveAttribLocations()
+unsigned WebGLProgram::numActiveAttribLocations(WebGLRenderingContext* context)
 {
-    cacheInfoIfNeeded();
+    cacheInfoIfNeeded(context);
     return m_activeAttribLocations.size();
 }
 
-GC3Dint WebGLProgram::getActiveAttribLocation(GC3Duint index)
+GC3Dint WebGLProgram::getActiveAttribLocation(WebGLRenderingContext* context, GC3Duint index)
 {
-    cacheInfoIfNeeded();
-    if (index >= numActiveAttribLocations())
+    cacheInfoIfNeeded(context);
+    if (index >= numActiveAttribLocations(context))
         return -1;
     return m_activeAttribLocations[index];
 }
 
-bool WebGLProgram::isUsingVertexAttrib0()
+bool WebGLProgram::isUsingVertexAttrib0(WebGLRenderingContext* context)
 {
-    cacheInfoIfNeeded();
-    for (unsigned ii = 0; ii < numActiveAttribLocations(); ++ii) {
-        if (!getActiveAttribLocation(ii))
+    cacheInfoIfNeeded(context);
+    unsigned numLocations = numActiveAttribLocations(context);
+    for (unsigned ii = 0; ii < numLocations; ++ii) {
+        if (!getActiveAttribLocation(context, ii))
             return true;
     }
     return false;
 }
 
-bool WebGLProgram::getLinkStatus()
+bool WebGLProgram::getLinkStatus(WebGLRenderingContext* context)
 {
-    cacheInfoIfNeeded();
+    cacheInfoIfNeeded(context);
     return m_linkStatus;
 }
 
-void WebGLProgram::setLinkStatus(bool status)
+void WebGLProgram::setLinkStatus(WebGLRenderingContext* context, bool status)
 {
-    cacheInfoIfNeeded();
+    cacheInfoIfNeeded(context);
     m_linkStatus = status;
 }
 
@@ -172,7 +173,7 @@ void WebGLProgram::cacheActiveAttribLocations(GraphicsContext3D* context3d)
     }
 }
 
-void WebGLProgram::cacheInfoIfNeeded()
+void WebGLProgram::cacheInfoIfNeeded(WebGLRenderingContext* context)
 {
     if (m_infoValid)
         return;
@@ -180,14 +181,14 @@ void WebGLProgram::cacheInfoIfNeeded()
     if (!object())
         return;
 
-    GraphicsContext3D* context = getAGraphicsContext3D();
+    GraphicsContext3D* gc3d = context->graphicsContext3D();
     if (!context)
         return;
     GC3Dint linkStatus = 0;
-    context->getProgramiv(object(), GraphicsContext3D::LINK_STATUS, &linkStatus);
+    gc3d->getProgramiv(object(), GraphicsContext3D::LINK_STATUS, &linkStatus);
     m_linkStatus = linkStatus;
     if (m_linkStatus)
-        cacheActiveAttribLocations(context);
+        cacheActiveAttribLocations(gc3d);
     m_infoValid = true;
 }