Rendering pipeline¶

Status: Draft

This page summarizes the primary render paths in crimsonland.exe.

Render dispatcher (FUN_00406af0)¶

If render_pass_mode (DAT_00487240) == 0 and game_state_id (DAT_00487270) != 5, it draws terrain only via FUN_004188a0.
Otherwise it runs the full gameplay render pass FUN_00405960.
After either branch it applies a fullscreen fade (DAT_00487264), runs ui_elements_update_and_render, calls FUN_00403550 (perk prompt), and renders the UI cursor.

Gameplay render pass (FUN_00405960)¶

Order of major passes:

1) fx_queue_render (FUN_00427920) 2) FUN_004188a0 (terrain/backbuffer blit) 3) player_render_overlays (FUN_00428390) for players with player_health (DAT_004908d4) <= 0 4) creature_render_all (FUN_00419680) 5) player_render_overlays for players with player_health (DAT_004908d4) > 0 6) projectile_render (FUN_00422c70) 7) bonus_render (FUN_004295f0) 8) grim_draw_fullscreen_color fade when DAT_00487264 > 0

Notes:

DAT_004aaf0c is used as the player index during the two overlay passes.
ui_transition_alpha (DAT_00487278) is the frame alpha used by multiple render paths.

HUD render (hud_update_and_render / FUN_0041aed0)¶

The in-game HUD render is gated by demo_mode_active (DAT_0048700d) and is called from the main UI pass (hud_update_and_render). It binds ui_wicons and uses grim_set_sub_rect for weapon icons, along with health/score overlays.

Terrain generation (FUN_00417b80)¶

terrain_generate renders the terrain texture into a render target and selects its base texture index from a per-level descriptor.

UI overlays¶

player_render_overlays draws per-player indicators (aim reticles, shields, weapon indicators). It is gated by game_state_id (DAT_00487270) values (not drawn in modal states like 0x14/0x16) and ui_transition_alpha (DAT_00487278) (transition alpha).