Run results for: shaders strings comparisons

Test name	Executions per second
✓ a, b equality	7,384,511 Ops/sec
a, c equality	7,300,067 Ops/sec
a, b locale compare	7,205,676 Ops/sec
a, c locale compare	7,021,438 Ops/sec

Script Preparation code:

var a = `
struct Matrices {
	model: mat4x4f,
	world: mat4x4f,
	modelView: mat4x4f,
	modelViewProjection: mat4x4f
};

fn getVertex2DToUVCoords(vertex: vec2f) -> vec2f {
  return vec2(
    vertex.x * 0.5 + 0.5,
    0.5 - vertex.y * 0.5
  );
}

fn getVertex3DToUVCoords(vertex: vec3f) -> vec2f {
  return vec2(
    vertex.x * 0.5 + 0.5,
    0.5 - vertex.y * 0.5
  );
}


fn getUVCover(uv: vec2f, textureMatrix: mat4x4f) -> vec2f {
  return (textureMatrix * vec4f(uv, 0.0, 1.0)).xy;
}

@group(1) @binding(0) var<uniform> matrices: Matrices;

struct VSOutput {
  @builtin(position) position: vec4f,
  @location(0) uv: vec2f,
  @location(1) normal: vec3f,
};

@fragment fn main(fsInput: VSOutput) -> @location(0) vec4f {
  // normals
  return vec4(normalize(fsInput.normal) * 0.5 + 0.5, 1.0);
}`

var b = `
struct Matrices {
	model: mat4x4f,
	world: mat4x4f,
	modelView: mat4x4f,
	modelViewProjection: mat4x4f
};

fn getVertex2DToUVCoords(vertex: vec2f) -> vec2f {
  return vec2(
    vertex.x * 0.5 + 0.5,
    0.5 - vertex.y * 0.5
  );
}

fn getVertex3DToUVCoords(vertex: vec3f) -> vec2f {
  return vec2(
    vertex.x * 0.5 + 0.5,
    0.5 - vertex.y * 0.5
  );
}


fn getUVCover(uv: vec2f, textureMatrix: mat4x4f) -> vec2f {
  return (textureMatrix * vec4f(uv, 0.0, 1.0)).xy;
}

@group(1) @binding(0) var<uniform> matrices: Matrices;

struct VSOutput {
  @builtin(position) position: vec4f,
  @location(0) uv: vec2f,
  @location(1) normal: vec3f,
};

@fragment fn main(fsInput: VSOutput) -> @location(0) vec4f {
  // normals
  return vec4(normalize(fsInput.normal) * 0.5 + 0.5, 1.0);
}`

var c = `struct Attributes {
	@builtin(vertex_index) vertexIndex : u32,
	@builtin(instance_index) instanceIndex : u32,
	@location(0) position: vec3f,
	@location(1) uv: vec2f,
	@location(2) normal: vec3f
};

struct Matrices {
	model: mat4x4f,
	world: mat4x4f,
	modelView: mat4x4f,
	modelViewProjection: mat4x4f
};

struct Camera {
	model: mat4x4f,
	view: mat4x4f,
	projection: mat4x4f
};

fn getOutputPosition(position: vec3f) -> vec4f {
  return matrices.modelViewProjection * vec4f(position, 1.0);
}

fn getUVCover(uv: vec2f, textureMatrix: mat4x4f) -> vec2f {
  return (textureMatrix * vec4f(uv, 0.0, 1.0)).xy;
}

@group(0) @binding(0) var<uniform> camera: Camera;

@group(1) @binding(0) var<uniform> matrices: Matrices;

struct VertexOutput {
  @builtin(position) position: vec4f,
  @location(0) uv: vec2f,
  @location(1) normal: vec3f,
};

@vertex fn main(
  attributes: Attributes,
) -> VertexOutput {
  var vsOutput: VertexOutput;

  vsOutput.position = getOutputPosition(attributes.position);
  vsOutput.uv = attributes.uv;
  vsOutput.normal = attributes.normal;
  
  return vsOutput;
}`

Run results for: shaders strings comparisons

a, b equality

a, b locale compare

a, c equality

a, c locale compare