Module shaders 

Shader management for the renderer.

Manages two independent shader renderers:

• Background shader (custom_shader_renderer) — full-screen post-processing effect rendered before the terminal cell grid, compatible with Ghostty/Shadertoy GLSL.
• Cursor shader (cursor_shader_renderer) — cursor overlay effect rendered after the cell grid, enabling glow, trail, and other cursor effects.

Sub-modules

• [background] — init and impl Renderer methods for the background shader
• [cursor] — init and impl Renderer methods for the cursor shader
• [shared] — impl Renderer methods that update both renderers (mouse, cursor state, etc.)

Structs

CursorShaderInitParams

Parameters for initialising the cursor shader renderer.

CustomShaderEnableParams

Parameters for enabling/updating the background custom shader at runtime.

CustomShaderInitParams

Parameters for initialising the background custom shader renderer.