Auto merge of #20317 - gootorov:webgl-getFramebufferAttachmentParameter, r=jdm

Implement WebGL getFrameBufferAttachmentParameter API

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Implementation of `getFramebufferAttachmentParameter` as in WebGL1 specification.

Part of https://github.com/servo/servo/issues/10209.

r? emilio or jdm.

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- [ ] These changes fix #__ (github issue number if applicable).

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- [x] There are tests for these changes

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1 files changed, 12 insertions, 0 deletions

diff --git a/components/script/dom/webgl2renderingcontext.rs b/components/script/dom/webgl2renderingcontext.rs
index 2a25c450b08..2d1186c0dcc 100644
--- a/components/script/dom/webgl2renderingcontext.rs
+++ b/components/script/dom/webgl2renderingcontext.rs
@@ -142,6 +142,18 @@ impl WebGL2RenderingContextMethods for WebGL2RenderingContext {
         self.base.GetExtension(cx, name)
     }
 
+    #[allow(unsafe_code)]
+    /// https://www.khronos.org/registry/webgl/specs/latest/2.0/#3.7.4
+    unsafe fn GetFramebufferAttachmentParameter(
+        &self,
+        cx: *mut JSContext,
+        target: u32,
+        attachment: u32,
+        pname: u32
+    ) -> JSVal {
+        self.base.GetFramebufferAttachmentParameter(cx, target, attachment, pname)
+    }
+
     /// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.3
     fn ActiveTexture(&self, texture: u32) {
         self.base.ActiveTexture(texture)