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Use surfman with glow bindings (#34328)

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* Use glowing surfman

Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com>

* Port https://github.com/servo/webxr/pull/255

Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com>

* fixups rebase

Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com>

* fmt

Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com>

* Update surfman

Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com>

* Fix stale TODO

Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com>

---------

Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com>
This commit is contained in:
Samson 2025-02-05 07:13:21 +01:00 • committed by GitHub
parent fdbfecf7dd
commit 503bb10c5b
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13 changed files with 70 additions and 97 deletions
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23
components/webxr/gl_utils.rs
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@ -3,7 +3,6 @@
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
use std::collections::HashMap;
use std::num::NonZero;
use glow as gl;
use glow::{Context as Gl, HasContext};
@ -12,10 +11,6 @@ use webxr_api::{ContextId, GLContexts, LayerId};
use crate::SurfmanGL;
pub(crate) fn framebuffer(framebuffer: u32) -> Option<gl::NativeFramebuffer> {
NonZero::new(framebuffer).map(gl::NativeFramebuffer)
}
// A utility to clear a color texture and optional depth/stencil texture
pub(crate) struct GlClearer {
fbos: HashMap<
@ -52,10 +47,9 @@ impl GlClearer {
.entry((layer_id, color, depth_stencil))
.or_insert_with(|| {
// Save the current GL state
let mut bound_fbos = [0, 0];
unsafe {
gl.get_parameter_i32_slice(gl::DRAW_FRAMEBUFFER_BINDING, &mut bound_fbos[0..]);
gl.get_parameter_i32_slice(gl::READ_FRAMEBUFFER_BINDING, &mut bound_fbos[1..]);
let draw_fbo = gl.get_parameter_framebuffer(gl::DRAW_FRAMEBUFFER_BINDING);
let read_fbo = gl.get_parameter_framebuffer(gl::READ_FRAMEBUFFER_BINDING);
// Generate and set attachments of a new FBO
let fbo = gl.create_framebuffer().ok();
@ -83,8 +77,8 @@ impl GlClearer {
}
// Restore the GL state
gl.bind_framebuffer(gl::DRAW_FRAMEBUFFER, framebuffer(bound_fbos[0] as _));
gl.bind_framebuffer(gl::READ_FRAMEBUFFER, framebuffer(bound_fbos[1] as _));
gl.bind_framebuffer(gl::DRAW_FRAMEBUFFER, draw_fbo);
gl.bind_framebuffer(gl::READ_FRAMEBUFFER, read_fbo);
debug_assert_eq!(gl.get_error(), gl::NO_ERROR);
fbo
@ -110,7 +104,6 @@ impl GlClearer {
let fbo = self.fbo(gl, layer_id, color, color_target, depth_stencil);
unsafe {
// Save the current GL state
let mut bound_fbos = [0, 0];
let mut clear_color = [0., 0., 0., 0.];
let mut clear_depth = [0.];
let mut clear_stencil = [0];
@ -118,8 +111,8 @@ impl GlClearer {
let scissor_enabled = gl.is_enabled(gl::SCISSOR_TEST);
let rasterizer_enabled = gl.is_enabled(gl::RASTERIZER_DISCARD);
gl.get_parameter_i32_slice(gl::DRAW_FRAMEBUFFER_BINDING, &mut bound_fbos[0..]);
gl.get_parameter_i32_slice(gl::READ_FRAMEBUFFER_BINDING, &mut bound_fbos[1..]);
let draw_fbo = gl.get_parameter_framebuffer(gl::DRAW_FRAMEBUFFER_BINDING);
let read_fbo = gl.get_parameter_framebuffer(gl::READ_FRAMEBUFFER_BINDING);
gl.get_parameter_f32_slice(gl::COLOR_CLEAR_VALUE, &mut clear_color[..]);
gl.get_parameter_f32_slice(gl::DEPTH_CLEAR_VALUE, &mut clear_depth[..]);
gl.get_parameter_i32_slice(gl::STENCIL_CLEAR_VALUE, &mut clear_stencil[..]);
@ -140,8 +133,8 @@ impl GlClearer {
gl.clear(gl::COLOR_BUFFER_BIT | gl::DEPTH_BUFFER_BIT | gl::STENCIL_BUFFER_BIT);
// Restore the GL state
gl.bind_framebuffer(gl::DRAW_FRAMEBUFFER, framebuffer(bound_fbos[0] as _));
gl.bind_framebuffer(gl::READ_FRAMEBUFFER, framebuffer(bound_fbos[1] as _));
gl.bind_framebuffer(gl::DRAW_FRAMEBUFFER, draw_fbo);
gl.bind_framebuffer(gl::READ_FRAMEBUFFER, read_fbo);
gl.clear_color(
clear_color[0],
clear_color[1],