Neil Roberts
f54cc7abd4
cogl-pipeline-glsl: Fix reusing shaders for shared ancestors
The check for whether we can reuse a program we've already generated was only being done if the pipeline already had a glsl_program_state. When there is no glsl_program_state it then looks for the nearest ancestor it can share the program with. It then wasn't checking whether that ancestor already had a GL program so it would start generating the source again. It wouldn't however compile that source again because _cogl_pipeline_backend_glsl_end does check whether there is already a program. This patch moves the check until after it has found the glsl_program_state, whether or not it was found from an ancestor or as its own state.
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