Implements fixes for problems discovered running San Angeles demo on Chrome

src/libGLESv2/Context.cpp

@@ -1409,6 +1409,7 @@ bool Context::applyRenderTarget(bool ignoreViewport)
     {
         device->SetRenderTarget(0, renderTarget);
         mAppliedRenderTargetSerial = renderTargetSerial;
+        mScissorStateDirty = true; // Scissor area must be clamped to render target's size-- this is different for different render targets.
     }
 
     unsigned int depthbufferSerial = 0;
@@ -1470,7 +1471,8 @@ bool Context::applyRenderTarget(bool ignoreViewport)
                          mState.scissorY,
                          mState.scissorX + mState.scissorWidth,
                          mState.scissorY + mState.scissorHeight};
-
+            rect.right = std::min(static_cast<UINT>(rect.right), desc.Width);
+            rect.bottom = std::min(static_cast<UINT>(rect.bottom), desc.Height);
             device->SetScissorRect(&rect);
             device->SetRenderState(D3DRS_SCISSORTESTENABLE, TRUE);
         }
@@ -1478,7 +1480,7 @@ bool Context::applyRenderTarget(bool ignoreViewport)
         {
             device->SetRenderState(D3DRS_SCISSORTESTENABLE, FALSE);
         }
-        
+
         mScissorStateDirty = false;
     }
 

src/libGLESv2/Texture.cpp

@@ -581,6 +581,10 @@ void Texture2D::copyImage(GLint level, GLenum internalFormat, GLint x, GLint y,
         convertToRenderTarget();
         pushTexture(mTexture, true);
     }
+    else
+    {
+        needRenderTarget();
+    }
 
     if (width != 0 && height != 0 && level < levelCount())
     {
@@ -1301,6 +1305,10 @@ void TextureCubeMap::copyImage(GLenum face, GLint level, GLenum internalFormat,
         convertToRenderTarget();
         pushTexture(mTexture, true);
     }
+    else
+    {
+        needRenderTarget();
+    }
 
     ASSERT(width == height);
 
@@ -1370,7 +1378,7 @@ void TextureCubeMap::copySubImage(GLenum face, GLint level, GLint xoffset, GLint
     }
     else
     {
-        getRenderTarget(face);
+        needRenderTarget();
     }
 
     if (level < levelCount())