docs: update dependencies and supported interfaces for wl_shm

Signed-off-by: NotAShelf <raf@notashelf.dev>
Change-Id: I212c3180a950755d0de4ee5134a924846a6a6964

README.md

@@ -13,8 +13,7 @@ comprehensive monitor management. Here's what makes Chroma stand out:
 
 ### Core Functionality
 
-- **Memory-efficient**: Smart caching and resource management
-  - **Optimized rendering**: VBO dirty flagging and reduced GPU overhead
+- **Memory-efficient**: Uses `wl_shm` shared-memory buffers
 - **Multi-monitor support**: Automatically detects and manages wallpapers for
   all connected displays
   - **Configurable scaling modes**: Fill, fit, stretch, and center options per
@@ -27,13 +26,10 @@ comprehensive monitor management. Here's what makes Chroma stand out:
     thresholds
 - **Multiple image formats**: Supports JPEG, PNG, BMP, TGA, PSD, GIF, HDR, PIC,
   PPM, PGM
-- **EGL/OpenGL rendering**: Hardware-accelerated wallpaper rendering
 - **Simple Configuration file**: Easy setup with TOML config files
 - **Signal handling**: Graceful shutdown and configuration reload (SIGHUP)
 - **Intelligent downsampling**: Automatically reduces large image resolution to
   save memory (up to 94% memory savings for 8K images)
-- **Advanced filtering**: Nearest, linear, bilinear, and trilinear filtering
-  options
 
 ## Usage
 
@@ -41,8 +37,7 @@ comprehensive monitor management. Here's what makes Chroma stand out:
 
 #### Dependencies
 
-- **Wayland**: wayland-client, wayland-egl
-- **Graphics**: EGL, OpenGL
+- **Wayland**: wayland-client
 - **System**: glibc, libm, libdl
 
 #### Development Dependencies
@@ -51,7 +46,6 @@ comprehensive monitor management. Here's what makes Chroma stand out:
 - Make
 - pkg-config
 - Wayland development headers
-- EGL/OpenGL development headers
 
 See [development section](#development) for more details. This section might get
 outdated at any given moment, so refer to the Nix shell if in doubt.
@@ -202,8 +196,8 @@ Chroma works with any Wayland compositor that supports:
 
 - `wl_compositor` interface
 - `wl_output` interface
+- `wl_shm` interface
 - `zwlr_layer_shell_v1` (wlr-layer-shell-unstable-v1) interface
-- EGL window surface creation
 
 The wlr-layer-shell protocol is required for creating wallpaper surfaces on the
 background layer. Tested only on Hyprland, but should work fine with any