Class: RLSL::BaseTranslator

Inherits:
Object
  • Object
show all
Defined in:
lib/rlsl/base_translator.rb,
lib/rlsl/base_translator/call_parser.rb,
lib/rlsl/base_translator/code_scanner.rb,
lib/rlsl/base_translator/code_rewriter.rb

Defined Under Namespace

Classes: CallParser, CodeRewriter, CodeScanner, SourceSnippet, TargetProfile

Constant Summary collapse

REMOVED_IDENTIFIERS = 
%w[static inline].freeze

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(uniforms, helpers_code, fragment_code) ⇒ BaseTranslator

Returns a new instance of BaseTranslator.



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# File 'lib/rlsl/base_translator.rb', line 31

def initialize(uniforms, helpers_code, fragment_code)
  @uniforms = uniforms
  @helpers_source = normalize_source(helpers_code)
  @fragment_source = normalize_source(fragment_code)
end

Class Method Details

.build_profile(uniform_target:, identifier_replacements:, call_rewrites:, removed_identifiers: REMOVED_IDENTIFIERS) ⇒ Object 



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# File 'lib/rlsl/base_translator.rb', line 132

def self.build_profile(uniform_target:, identifier_replacements:, call_rewrites:, removed_identifiers: REMOVED_IDENTIFIERS)
  TargetProfile.new(
    uniform_target: uniform_target,
    identifier_replacements: identifier_replacements.freeze,
    call_rewrites: call_rewrites.freeze,
    removed_identifiers: removed_identifiers.freeze
  ).freeze
end

.common_call_rewrites(target_vec2:, target_vec3:, target_vec4:) ⇒ Object 



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# File 'lib/rlsl/base_translator.rb', line 141

def self.common_call_rewrites(target_vec2:, target_vec3:, target_vec4:)
  {
    "vec2_new" => rename_call(target_vec2),
    "vec3_new" => rename_call(target_vec3),
    "vec4_new" => rename_call(target_vec4),
    "vec2_add" => infix_call("+"),
    "vec3_add" => infix_call("+"),
    "vec2_sub" => infix_call("-"),
    "vec3_sub" => infix_call("-"),
    "vec2_mul" => infix_call("*"),
    "vec3_mul" => infix_call("*"),
    "vec2_div" => infix_call("/"),
    "vec3_div" => infix_call("/"),
    "vec2_dot" => rename_call("dot"),
    "vec3_dot" => rename_call("dot"),
    "vec2_length" => rename_call("length"),
    "vec3_length" => rename_call("length"),
    "vec2_normalize" => rename_call("normalize"),
    "vec3_normalize" => rename_call("normalize"),
    "sqrtf" => rename_call("sqrt"),
    "sinf" => rename_call("sin"),
    "cosf" => rename_call("cos"),
    "tanf" => rename_call("tan"),
    "fabsf" => rename_call("abs"),
    "fminf" => rename_call("min"),
    "fmaxf" => rename_call("max"),
    "floorf" => rename_call("floor"),
    "ceilf" => rename_call("ceil"),
    "powf" => rename_call("pow"),
    "expf" => rename_call("exp"),
    "logf" => rename_call("log"),
    "atan2f" => rename_call("atan2"),
    "fmodf" => rename_call("fmod"),
    "mix_f" => rename_call("mix"),
    "mix_v3" => rename_call("mix"),
    "clamp_f" => rename_call("clamp"),
    "smoothstep" => rename_call("smoothstep"),
    "fract" => rename_call("fract")
  }.freeze
end

.infix_call(operator) ⇒ Object 



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# File 'lib/rlsl/base_translator.rb', line 188

def self.infix_call(operator)
  lambda do |arguments|
    raise ArgumentError, "Expected 2 arguments for #{operator} rewrite, got #{arguments.length}" unless arguments.length == 2

    "(#{arguments[0]} #{operator} #{arguments[1]})"
  end
end

.rename_call(name) ⇒ Object 



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# File 'lib/rlsl/base_translator.rb', line 182

def self.rename_call(name)
  lambda do |arguments|
    "#{name}(#{arguments.join(', ')})"
  end
end

Instance Method Details

#translate ⇒ Object 



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# File 'lib/rlsl/base_translator.rb', line 37

def translate
  helpers_translated = translate_code(@helpers_source)
  fragment_translated = translate_code(@fragment_source)
  generate_shader(helpers_translated, fragment_translated)
end