Module rs_pbrt::core::pbrt

Type definitions of Float and Spectrum, otherwise constants and functions which can be used almost everywhere else in the code.

Constants

• INV_2_PI
• INV_4_PI
• INV_PI
• MACHINE_EPSILON
• PI_OVER_2
• PI_OVER_4
• SHADOW_EPSILON
• SQRT_2

Functions

• bits_to_float
  Use unsafe std::mem::transmute_copy to convert u32 to f32.
• clamp_t
  Clamp the given value val to lie between the values low and high.
• degrees
  Convert from angles expressed in radians to degrees.
• erf
• erf_inv
• find_interval
  Helper function which emulates the behavior of std::upper_bound().
• float_to_bits
  Use unsafe std::mem::transmute_copy to convert f32 to u32.
• gamma
  Error propagation.
• gamma_correct
  Is used to write sRGB-compatible 8-bit image files.
• is_power_of_2
  Determine if a given integer is an exact power of 2.
• lerp
  Interpolate linearly between two provided values.
• log_2
• log_2_int_i32
  Compute an integer base-2 logarithm function.
• log_2_int_i64
  Compute an integer base-2 logarithm function.
• log_2_int_u32
  Compute an integer base-2 logarithm function.
• log_2_int_u64
  Compute an integer base-2 logarithm function.
• mod_t
  Computes the remainder of a/b. Provides the behavior that the modulus of a negative number is always positive.
• next_float_down
  Bump a floating-point value down to the next smaller representable floating-point value.
• next_float_up
  Bump a floating-point value up to the next greater representable floating-point value.
• quadratic
  Find solution(s) of the quadratic equation at² + bt + c = 0.
• radians
  Convert from angles expressed in degrees to radians.
• round_up_pow2_32
  Round an integer up to the next higher (or equal) power of 2.
• round_up_pow2_64
  Round an integer up to the next higher (or equal) power of 2.

Type Definitions

• Float
• Spectrum