Immediately Fast Mod (26.1.2, 1.20.1) – Speed Up Immediate Mode Rendering

Immediately Fast Mod is a Minecraft mod crafted to optimize the immediate mode rendering performance of the client, enhancing gameplay fluidity and responsiveness. This mod addresses this challenge by implementing optimizations that streamline the immediate mode rendering process, resulting in smoother gameplay and improved frame rates. By optimizing rendering performance, the mod ensures that players experience minimal lag and enjoy themselves.

Features:

The following parts of the immediate mode rendering code are optimized:

• Entities
• Block entities
• Particles
• Text rendering
• GUI/HUD
• Immediate mode rendering of other mods

It also features targeted optimizations where vanilla rendering code is being changed in order to run faster. The following parts of the rendering code are optimized with a more efficient implementation:

• Map rendering
• HUD rendering
• Text rendering

Performance

Here are some performance comparisons of areas the mod optimizes particularly well:

If other mods are listed in the table this means that this mod also optimizes that part of the game.

Test Hardware: Ryzen 5 1600, 32GB DDR4, GTX 1060

FPS Numbers were taken from external tools (in this case MSI Afterburner) and averaged over a couple of seconds. If you decide to test this yourself keep in mind that ImmediatelyFast can only improve FPS in a scenario where your CPU is the bottleneck (Most likely the case if your GPU isn’t ancient or you use very heavy shaders). Slower CPUs will benefit more from this mod than really fast CPUs.

• Entity Rendering: Generally FPS should be around 2x higher on busy servers.
• Map Rendering: Generally FPS should be around 5x higher when there are many maps on screen.
• HUD Rendering: Generally FPS should be around 40% higher in almost all scenarios.
• Text Rendering: Generally FPS should be around 2x higher when there are many signs or holograms around you.
• Block-Entity Rendering: Generally FPS should be around 20% higher when there are many block entities around you.

Screenshots:

Configs:

ImmediatelyFast has a config file which can be found in the config folder of your Minecraft instance. Most options should be left at their default values, but some may be tweaked to improve performance or compatibility.

• font_atlas_resizing: Increases the sizes of the font atlas textures. This improves performance with high resolution or custom server fonts.
• map_atlas_generation: Puts the map textures into a single texture instead of multiple textures. This improves performance when many maps are on screen.
• hud_batching: Improves the performance of the HUD rendering by submitting less draw calls. If you experience issues with HUD elements, try disabling this optimization.
• fast_text_lookup: Caches some data between rendering text characters. This slightly improves performance when rendering a lot of text.
• avoid_redundant_framebuffer_switching: This optimization reduces the number of framebuffer switches when rendering many different things in the world (entities, particles, block entities, …) or the HUD to increase FPS.
• experimental_disable_error_checking: Disables OpenGL error checking. This may improve performance on certain systems, but can cause hard to debug issues if enabled.
• experimental_disable_resource_pack_conflict_handling: Controls if ImmediatelyFast should scan resource packs for incompatible core shader modifications in oder to disable some conflicting optimizations. This can be disabled to force optimizations even if they may cause graphical issues with certain resource packs.
• experimental_sign_text_buffering: Buffers text on signs instead of re-rendering it every frame. May cause issues with high resolution or custom fonts.
• experimental_screen_batching: Improves the performance of some in-game screens rendering by submitting less draw calls.

Immediately Fast Mod Download Links