Enhance OpenGLPipelineState with comprehensive state management
- Add BlendOp enum for blend operations
- Add PolygonMode enum for polygon rendering mode
- Add StencilOp enum for stencil operations
- Add ScissorState and LogicalOperation structs
- Add DepthStencilState: stencil enable, read/write mask, stencil ref, stencil func, stencil ops
- Add BlendState: blend equation, color write mask, blend factor
- Add RasterizerState: polygon mode, polygon offset, depth clip, scissor test, multisample
- Add ViewportState: float coordinates with min/max depth
- Add Apply methods for individual state groups
- Add AttachShader/DetachShader for program management
- Add getter methods for state structs
ssdfasd
1de66b835d