Handle currently bound texture id in PowerVR workaround

gpu/command_buffer/service/texture_definition.cc

Index: gpu/command_buffer/service/texture_definition.cc
diff --git a/gpu/command_buffer/service/texture_definition.cc b/gpu/command_buffer/service/texture_definition.cc
index a5fe1d388deee2fef9c3095ca42371eee0fef590..30ca1e7a00ba44b8438251fa485cfe1a5a85eea7 100644
--- a/gpu/command_buffer/service/texture_definition.cc
+++ b/gpu/command_buffer/service/texture_definition.cc
@@ -411,6 +411,12 @@ void TextureDefinition::UpdateTexture(Texture* texture) const {
     glGenTextures(1, &service_id);
     old_service_id = texture->service_id();
     texture->SetServiceId(service_id);
+
+    GLint bound_id = 0;
+    glGetIntegerv(target_, &bound_id);

[no sievers, 2015/04/29 21:04:43]

This doesn't work. It will generate a GL error I assume.

You can just DCHECK_EQ(GL_TEXTURE2D, target_); and then do:
glGetIntegerv(GL_TEXTURE_BINDING_2D, &bound_id);

[boliu, 2015/04/29 21:16:14]

Meh, missed the giant block doing the GL_TEXTURE2D -> GL_TEXTURE_BINDING_2D in
ScopedTextureBinder. Done

Surprised there isn't already a helper function to do that though..

+    if (bound_id == static_cast<GLint>(old_service_id)) {
+      glBindTexture(target_, service_id);
+    }
   }
 
   UpdateTextureInternal(texture);