GLSL built-in function
floatBitsToUint()
Reinterprets floating-point bits as an unsigned integer.
Syntax
genUType floatBitsToUint(genType x)genType means float / vec2 / vec3 / vec4; genUType means uint / uvec2 / uvec3 / uvec4; matching placeholders use the same type.
Parameters
- x
- Input value or left-hand vector
Return value
An unsigned integer value for each component containing the input float's bit pattern.
Live example
Edit the code and the preview updates as you type.
What floatBitsToUint does
Reinterprets floating-point bits as an unsigned integer.
Read the preview
floatBitsToUint(1.0)==1065353216u checks the encoding of 1.0 rather than its numeric value. Comparing with 1u instead makes the result false and changes the background color.
Core call
float(floatBitsToUint(1.0)==1065353216u);
Use highp float input for bit reinterpretation; this is not truncation.
Experiment
Use floatBitsToUint(-1.0)==3212836864u in the result expression. The unsigned integer includes the sign bit, and the uniform true color confirms that encoding.