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script: Remove three duplicated log functions from webgl (#39227)

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We have the standard library at our disposal, let's use it.

Testing: Covered by existing tests

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
This commit is contained in:
Simon Wülker 2025-09-09 13:31:55 +02:00 • committed by GitHub
parent 7a28fd786c
commit 406eab4ec2
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GPG key ID: B5690EEEBB952194
3 changed files with 6 additions and 18 deletions
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8
components/script/dom/webgl/validations/tex_image_2d.rs
View file

@ -85,10 +85,6 @@ impl fmt::Display for TexImageValidationError {
}
}
fn log2(n: u32) -> u32 {
31 - n.leading_zeros()
}
pub(crate) struct CommonTexImage2DValidator<'a> {
context: &'a WebGLRenderingContext,
target: u32,
@ -204,7 +200,7 @@ impl WebGLValidator for CommonTexImage2DValidator<'_> {
// log_2(max), where max is the returned value of GL_MAX_TEXTURE_SIZE
// when target is GL_TEXTURE_2D or GL_MAX_CUBE_MAP_TEXTURE_SIZE when
// target is not GL_TEXTURE_2D.
if level > log2(max_size) {
if level > max_size.ilog2() {
self.context.webgl_error(InvalidValue);
return Err(TexImageValidationError::LevelTooHigh);
}
@ -772,7 +768,7 @@ impl WebGLValidator for TexStorageValidator<'_> {
return Err(TexImageValidationError::InvalidTextureFormat);
}
let max_level = log2(cmp::max(width, height)) + 1;
let max_level = cmp::max(width, height).ilog2() + 1;
if level > max_level {
context.webgl_error(InvalidOperation);
return Err(TexImageValidationError::LevelTooHigh);

6
components/script/dom/webgl/validations/tex_image_3d.rs
View file

@ -14,10 +14,6 @@ use crate::dom::bindings::root::DomRoot;
use crate::dom::webgl::webglrenderingcontext::WebGLRenderingContext;
use crate::dom::webgl::webgltexture::WebGLTexture;
fn log2(n: u32) -> u32 {
31 - n.leading_zeros()
}
pub(crate) struct CommonTexImage3DValidator<'a> {
context: &'a WebGLRenderingContext,
target: u32,
@ -107,7 +103,7 @@ impl WebGLValidator for CommonTexImage3DValidator<'_> {
self.context.webgl_error(InvalidValue);
return Err(TexImageValidationError::NegativeLevel);
}
if level > log2(max_size) {
if level > max_size.ilog2() {
self.context.webgl_error(InvalidValue);
return Err(TexImageValidationError::LevelTooHigh);
}

10
components/script/dom/webgl/webglframebuffer.rs
View file

@ -37,10 +37,6 @@ pub(crate) enum CompleteForRendering {
MissingColorAttachment,
}
fn log2(n: u32) -> u32 {
31 - n.leading_zeros()
}
#[cfg_attr(crown, crown::unrooted_must_root_lint::must_root)]
#[derive(Clone, JSTraceable, MallocSizeOf)]
enum WebGLFramebufferAttachment {
@ -786,7 +782,7 @@ impl WebGLFramebuffer {
} else {
context.limits().max_tex_size
};
if level < 0 || level as u32 > log2(max_tex_size) {
if level < 0 || level as u32 > max_tex_size.ilog2() {
return Err(WebGLError::InvalidValue);
}
}
@ -856,11 +852,11 @@ impl WebGLFramebuffer {
Some(texture) => {
let (max_level, max_layer) = match texture.target() {
Some(constants::TEXTURE_3D) => (
log2(context.limits().max_3d_texture_size),
context.limits().max_3d_texture_size.ilog2(),
context.limits().max_3d_texture_size - 1,
),
Some(constants::TEXTURE_2D) => (
log2(context.limits().max_tex_size),
context.limits().max_tex_size.ilog2(),
context.limits().max_array_texture_layers - 1,
),
_ => return Err(WebGLError::InvalidOperation),