[OpenJDK 2D-Dev] RFR: 8262751: RenderPipelineState assertion error in J2DDemo

[Jayathirth D V]

On Wed, 25 Aug 2021 05:41:03 GMT, Jayathirth D V <jdv at openjdk.org> wrote:

>> Provide correct pipeline state for MTLPaint after reset
>
> src/java.desktop/macosx/native/libawt_lwawt/java2d/metal/MTLPaints.m line 971:
> 
>> 969:         [encoder setRenderPipelineState:pipelineState];
>> 970:     } else {
>> 971:       // Fallback to valid pipeline state
> 
> We should not call it a valid pipeline state. It is more of standard pipeline state with color 0 which we are using  after reset.
> 
> We are hitting default MTLPaint without any texture(which seems to be the main root cause for this issue- state management problem) and we end up not setting any pipeline state. Please reword this comment.

Also is it possible for us to just return at any earlier stage before we hit setRenderPipelineState() without valid texture or color?

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PR: https://git.openjdk.java.net/jdk/pull/5227