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Add initial support for WebGL compressed textures

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This commit is contained in:
Mátyás Mustoha 2019-03-25 12:50:45 +01:00 • committed by Josh Matthews
parent a14b952fa3
commit 7f0b820d4e
16 changed files with 792 additions and 37 deletions
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42
components/script/dom/webgl_extensions/extensions.rs
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@ -17,6 +17,7 @@ use crate::dom::oestexturefloat::OESTextureFloat;
use crate::dom::oestexturehalffloat::OESTextureHalfFloat;
use crate::dom::webglcolorbufferfloat::WEBGLColorBufferFloat;
use crate::dom::webglrenderingcontext::WebGLRenderingContext;
use crate::dom::webgltexture::TexCompression;
use canvas_traits::webgl::WebGLVersion;
use fnv::{FnvHashMap, FnvHashSet};
use gleam::gl::{self, GLenum};
@ -82,6 +83,8 @@ struct WebGLExtensionFeatures {
element_index_uint_enabled: bool,
/// WebGL EXT_blend_minmax extension.
blend_minmax_enabled: bool,
/// WebGL supported texture compression formats enabled by extensions.
tex_compression_formats: FnvHashMap<GLenum, TexCompression>,
}
impl WebGLExtensionFeatures {
@ -131,6 +134,7 @@ impl WebGLExtensionFeatures {
disabled_get_vertex_attrib_names,
element_index_uint_enabled,
blend_minmax_enabled,
tex_compression_formats: Default::default(),
}
}
}
@ -225,6 +229,13 @@ impl WebGLExtensions {
.any(|name| features.gl_extensions.contains(*name))
}
pub fn supports_all_gl_extension(&self, names: &[&str]) -> bool {
let features = self.features.borrow();
names
.iter()
.all(|name| features.gl_extensions.contains(*name))
}
pub fn enable_tex_type(&self, data_type: GLenum) {
self.features
.borrow_mut()
@ -335,6 +346,35 @@ impl WebGLExtensions {
.contains(&name)
}
pub fn add_tex_compression_formats(&self, formats: &[TexCompression]) {
let formats: FnvHashMap<GLenum, TexCompression> = formats
.iter()
.map(|&compression| (compression.format.as_gl_constant(), compression))
.collect();
self.features
.borrow_mut()
.tex_compression_formats
.extend(formats.iter());
}
pub fn get_tex_compression_format(&self, format_id: GLenum) -> Option<TexCompression> {
self.features
.borrow()
.tex_compression_formats
.get(&format_id)
.cloned()
}
pub fn get_tex_compression_ids(&self) -> Vec<GLenum> {
self.features
.borrow()
.tex_compression_formats
.keys()
.map(|&k| k)
.collect()
}
fn register_all_extensions(&self) {
self.register::<ext::angleinstancedarrays::ANGLEInstancedArrays>();
self.register::<ext::extblendminmax::EXTBlendMinmax>();
@ -349,6 +389,8 @@ impl WebGLExtensions {
self.register::<ext::oestexturehalffloatlinear::OESTextureHalfFloatLinear>();
self.register::<ext::oesvertexarrayobject::OESVertexArrayObject>();
self.register::<ext::webglcolorbufferfloat::WEBGLColorBufferFloat>();
self.register::<ext::webglcompressedtextureetc1::WEBGLCompressedTextureETC1>();
self.register::<ext::webglcompressedtextures3tc::WEBGLCompressedTextureS3TC>();
}
pub fn enable_element_index_uint(&self) {