Mirrors/servo
1
0
Fork 0
mirror of https://github.com/servo/servo.git synced 2025-07-23 23:33:43 +01:00
Code Issues Projects Releases Packages Wiki Activity

Implement WebGL OES_standard_derivatives extension.

Browse source
This commit is contained in:
Imanol Fernandez 2017-08-21 22:37:19 +02:00
parent d4e43d9d76
commit 1dd3899c37
9 changed files with 127 additions and 20 deletions
Download patch file Download diff file Expand all files Collapse all files

47
components/script/dom/webgl_extensions/extensions.rs
View file

@ -6,6 +6,7 @@ use canvas_traits::webgl::WebGLError;
use core::iter::FromIterator;
use core::nonzero::NonZero;
use dom::bindings::cell::DOMRefCell;
use dom::bindings::codegen::Bindings::OESStandardDerivativesBinding::OESStandardDerivativesConstants;
use dom::bindings::codegen::Bindings::OESTextureHalfFloatBinding::OESTextureHalfFloatConstants;
use dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::WebGLRenderingContextConstants as constants;
use dom::bindings::js::Root;
@ -35,6 +36,13 @@ const DEFAULT_NOT_FILTERABLE_TEX_TYPES: [GLenum; 2] = [
constants::FLOAT, OESTextureHalfFloatConstants::HALF_FLOAT_OES
];
// Param names that are implemented for getParameter WebGL function
// but must trigger a InvalidEnum error until the related WebGL Extensions are enabled.
// Example: https://www.khronos.org/registry/webgl/extensions/OES_standard_derivatives/
const DEFAULT_DISABLED_GET_PARAMETER_NAMES: [GLenum; 1] = [
OESStandardDerivativesConstants::FRAGMENT_SHADER_DERIVATIVE_HINT_OES
];
/// WebGL features that are enabled/disabled by WebGL Extensions.
#[derive(JSTraceable, HeapSizeOf)]
struct WebGLExtensionFeatures {
@ -42,7 +50,11 @@ struct WebGLExtensionFeatures {
disabled_tex_types: HashSet<GLenum>,
not_filterable_tex_types: HashSet<GLenum>,
effective_tex_internal_formats: HashMap<TexFormatType, u32>,
query_parameter_handlers: HashMap<GLenum, WebGLQueryParameterHandler>
query_parameter_handlers: HashMap<GLenum, WebGLQueryParameterHandler>,
/// WebGL Hint() targets enabled by extensions.
hint_targets: HashSet<GLenum>,
/// WebGL GetParameter() names enabled by extensions.
disabled_get_parameter_names: HashSet<GLenum>,
}
impl Default for WebGLExtensionFeatures {
@ -52,7 +64,9 @@ impl Default for WebGLExtensionFeatures {
disabled_tex_types: DEFAULT_DISABLED_TEX_TYPES.iter().cloned().collect(),
not_filterable_tex_types: DEFAULT_NOT_FILTERABLE_TEX_TYPES.iter().cloned().collect(),
effective_tex_internal_formats: HashMap::new(),
query_parameter_handlers: HashMap::new()
query_parameter_handlers: HashMap::new(),
hint_targets: HashSet::new(),
disabled_get_parameter_names: DEFAULT_DISABLED_GET_PARAMETER_NAMES.iter().cloned().collect(),
}
}
}
@ -105,8 +119,18 @@ impl WebGLExtensions {
})
}
pub fn is_enabled<T>(&self) -> bool
where
T: 'static + WebGLExtension + JSTraceable + HeapSizeOf
{
let name = T::name().to_uppercase();
self.extensions.borrow().get(&name).map_or(false, |ext| { ext.is_enabled() })
}
pub fn get_dom_object<T>(&self) -> Option<Root<T::Extension>>
where T: 'static + WebGLExtension + JSTraceable + HeapSizeOf {
where
T: 'static + WebGLExtension + JSTraceable + HeapSizeOf
{
let name = T::name().to_uppercase();
self.extensions.borrow().get(&name).and_then(|extension| {
extension.as_any().downcast_ref::<TypedWebGLExtensionWrapper<T>>().and_then(|extension| {
@ -172,7 +196,24 @@ impl WebGLExtensions {
})
}
pub fn enable_hint_target(&self, name: GLenum) {
self.features.borrow_mut().hint_targets.insert(name);
}
pub fn is_hint_target_enabled(&self, name: GLenum) -> bool {
self.features.borrow().hint_targets.contains(&name)
}
pub fn enable_get_parameter_name(&self, name: GLenum) {
self.features.borrow_mut().disabled_get_parameter_names.remove(&name);
}
pub fn is_get_parameter_name_enabled(&self, name: GLenum) -> bool {
!self.features.borrow().disabled_get_parameter_names.contains(&name)
}
fn register_all_extensions(&self) {
self.register::<ext::oesstandardderivatives::OESStandardDerivatives>();
self.register::<ext::oestexturefloat::OESTextureFloat>();
self.register::<ext::oestexturefloatlinear::OESTextureFloatLinear>();
self.register::<ext::oestexturehalffloat::OESTextureHalfFloat>();