Module librashader::presets

Available on crate feature presets only.

Parsing and usage of shader presets.

This module contains facilities and types for parsing .slangp shader presets files.

Shader presets contain shader and texture parameters, and the order in which to apply a set of shaders in a filter chain. A librashader runtime takes a resulting ShaderPreset as input to create a filter chain.

librashader’s preset parser has been tested against all presets in the slang-shaders repository to generally good compatibility. However, the preset parser requires all referenced paths to resolve to a canonical, existing path relative to the preset file. The handful of shaders that fail to parse due to this or other reasons are listed at BROKEN_SHADERS.md.

Modules

• context
  Shader preset wildcard replacement context handling.

Structs

• ParameterConfig
  Configuration options for a shader parameter.
• Scale2D
  2D quad scaling parameters.
• Scaling
  Framebuffer scaling parameters.
• ShaderPassConfig
  The configuration for a single shader pass.
• ShaderPreset
  A shader preset including all specified parameters, textures, and paths to specified shaders.
• TextureConfig
  Configuration options for a lookup texture used in the shader.
• WildcardContext
  A preset wildcard context.

Enums

• ParseErrorKind
  The kind of error that may occur in parsing.
• ParsePresetError
  Error type for preset parsing.
• ScaleFactor
  The scaling factor for framebuffer scaling.
• ScaleType
  The scaling type for the shader pass.

Functions

• get_parameter_meta
  Get full parameter metadata from a shader preset.