Add self-feedback system and water shader

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Features:
- Self-feedback rendering system for shaders with feedback loops
- Automatic FBO/texture management for feedback
- Metadata parser detects iChannel feedback configuration
- Adaptive render loop (with/without feedback)
- Water shader from Shadertoy (adapted and working)
- Fixed variable initialization issues in shader code

Technical details:
- FBO creation/destruction on shader switch
- Texture binding to iChannel0-3 based on metadata
- Auto-resize feedback buffers on window resize
- Cleanup on exit and shader switch

Files:
- src/main.cpp: Feedback system implementation
- shaders/water.glsl: Water shader with fixes

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

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This commit is contained in:

Sergio

2025-11-16 15:45:18 +01:00

parent 44de2c7013

commit 194726f823

12 changed files with 285 additions and 44 deletions

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