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Implement instanced WebGL drawing calls (part of #20791)

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This commit is contained in:
Anthony Ramine 2018-03-20 10:11:46 +01:00
parent 0aefffc5bf
commit 4e6eea221a
12 changed files with 432 additions and 125 deletions
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31
components/script/dom/webgl_extensions/extensions.rs
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@ -4,6 +4,7 @@
use canvas_traits::webgl::{WebGLError, WebGLVersion};
use dom::bindings::cell::DomRefCell;
use dom::bindings::codegen::Bindings::ANGLEInstancedArraysBinding::ANGLEInstancedArraysConstants;
use dom::bindings::codegen::Bindings::EXTTextureFilterAnisotropicBinding::EXTTextureFilterAnisotropicConstants;
use dom::bindings::codegen::Bindings::OESStandardDerivativesBinding::OESStandardDerivativesConstants;
use dom::bindings::codegen::Bindings::OESTextureHalfFloatBinding::OESTextureHalfFloatConstants;
@ -54,6 +55,13 @@ const DEFAULT_DISABLED_GET_TEX_PARAMETER_NAMES_WEBGL1: [GLenum; 1] = [
EXTTextureFilterAnisotropicConstants::TEXTURE_MAX_ANISOTROPY_EXT,
];
// Param names that are implemented for glGetVertexAttrib in a WebGL 1.0 context
// but must trigger a InvalidEnum error until the related WebGL Extensions are enabled.
// Example: https://www.khronos.org/registry/webgl/extensions/ANGLE_instanced_arrays/
const DEFAULT_DISABLED_GET_VERTEX_ATTRIB_NAMES_WEBGL1: [GLenum; 1] = [
ANGLEInstancedArraysConstants::VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE,
];
/// WebGL features that are enabled/disabled by WebGL Extensions.
#[derive(JSTraceable, MallocSizeOf)]
struct WebGLExtensionFeatures {
@ -68,6 +76,8 @@ struct WebGLExtensionFeatures {
disabled_get_parameter_names: FnvHashSet<GLenum>,
/// WebGL GetTexParameter() names enabled by extensions.
disabled_get_tex_parameter_names: FnvHashSet<GLenum>,
/// WebGL GetAttribVertex() names enabled by extensions.
disabled_get_vertex_attrib_names: FnvHashSet<GLenum>,
/// WebGL OES_element_index_uint extension.
element_index_uint_enabled: bool,
/// WebGL EXT_blend_minmax extension.
@ -80,6 +90,7 @@ impl WebGLExtensionFeatures {
disabled_tex_types,
disabled_get_parameter_names,
disabled_get_tex_parameter_names,
disabled_get_vertex_attrib_names,
element_index_uint_enabled,
blend_minmax_enabled,
) = match webgl_version {
@ -88,12 +99,20 @@ impl WebGLExtensionFeatures {
DEFAULT_DISABLED_TEX_TYPES_WEBGL1.iter().cloned().collect(),
DEFAULT_DISABLED_GET_PARAMETER_NAMES_WEBGL1.iter().cloned().collect(),
DEFAULT_DISABLED_GET_TEX_PARAMETER_NAMES_WEBGL1.iter().cloned().collect(),
DEFAULT_DISABLED_GET_VERTEX_ATTRIB_NAMES_WEBGL1.iter().cloned().collect(),
false,
false,
)
},
WebGLVersion::WebGL2 => {
(Default::default(), Default::default(), Default::default(), true, true)
(
Default::default(),
Default::default(),
Default::default(),
Default::default(),
true,
true,
)
}
};
Self {
@ -105,6 +124,7 @@ impl WebGLExtensionFeatures {
hint_targets: Default::default(),
disabled_get_parameter_names,
disabled_get_tex_parameter_names,
disabled_get_vertex_attrib_names,
element_index_uint_enabled,
blend_minmax_enabled,
}
@ -269,7 +289,16 @@ impl WebGLExtensions {
!self.features.borrow().disabled_get_tex_parameter_names.contains(&name)
}
pub fn enable_get_vertex_attrib_name(&self, name: GLenum) {
self.features.borrow_mut().disabled_get_vertex_attrib_names.remove(&name);
}
pub fn is_get_vertex_attrib_name_enabled(&self, name: GLenum) -> bool {
!self.features.borrow().disabled_get_vertex_attrib_names.contains(&name)
}
fn register_all_extensions(&self) {
self.register::<ext::angleinstancedarrays::ANGLEInstancedArrays>();
self.register::<ext::extblendminmax::EXTBlendMinmax>();
self.register::<ext::extshadertexturelod::EXTShaderTextureLod>();
self.register::<ext::exttexturefilteranisotropic::EXTTextureFilterAnisotropic>();