webgl: Add isProgram() support.

There's one failure still, where a deleted program should still be
considered to be a program until it's unbound.  However, I recently
made it so that we unbind at delete time, and we may need to partially
back that change out.

components/script/dom/webglprogram.rs

@@ -87,6 +87,10 @@ impl WebGLProgram {
         }
     }
 
+    pub fn is_deleted(&self) -> bool {
+        self.is_deleted.get()
+    }
+
     /// glLinkProgram
     pub fn link(&self) {
         self.linked.set(false);

components/script/dom/webglrenderingcontext.rs

@@ -1403,6 +1403,11 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
         frame_buffer.map_or(false, |buf| buf.target().is_some() && !buf.is_deleted())
     }
 
+    // https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.9
+    fn IsProgram(&self, program: Option<&WebGLProgram>) -> bool {
+        program.map_or(false, |p| !p.is_deleted())
+    }
+
     // https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.7
     fn IsRenderbuffer(&self, render_buffer: Option<&WebGLRenderbuffer>) -> bool {
         render_buffer.map_or(false, |buf| buf.ever_bound() && !buf.is_deleted())

components/script/dom/webidls/WebGLRenderingContext.webidl

@@ -605,7 +605,7 @@ interface WebGLRenderingContextBase
     [WebGLHandlesContextLoss] GLboolean isBuffer(WebGLBuffer? buffer);
     //[WebGLHandlesContextLoss] GLboolean isEnabled(GLenum cap);
     [WebGLHandlesContextLoss] GLboolean isFramebuffer(WebGLFramebuffer? framebuffer);
-    //[WebGLHandlesContextLoss] GLboolean isProgram(WebGLProgram? program);
+    [WebGLHandlesContextLoss] GLboolean isProgram(WebGLProgram? program);
     [WebGLHandlesContextLoss] GLboolean isRenderbuffer(WebGLRenderbuffer? renderbuffer);
     [WebGLHandlesContextLoss] GLboolean isShader(WebGLShader? shader);
     [WebGLHandlesContextLoss] GLboolean isTexture(WebGLTexture? texture);

tests/wpt/metadata/webgl/conformance-1.0.3/conformance/misc/is-object.html.ini

@@ -1,38 +0,0 @@
-[is-object.html]
-  type: testharness
-  [WebGL test #1: gl.isBuffer(buffer) should be false. Threw exception TypeError: gl.isBuffer is not a function]
-    expected: FAIL
-
-  [WebGL test #3: gl.isBuffer(buffer) should be true. Threw exception TypeError: gl.isBuffer is not a function]
-    expected: FAIL
-
-  [WebGL test #5: gl.isFramebuffer(framebuffer) should be false. Threw exception TypeError: gl.isFramebuffer is not a function]
-    expected: FAIL
-
-  [WebGL test #7: gl.isFramebuffer(framebuffer) should be true. Threw exception TypeError: gl.isFramebuffer is not a function]
-    expected: FAIL
-
-  [WebGL test #9: gl.isRenderbuffer(renderbuffer) should be false. Threw exception TypeError: gl.isRenderbuffer is not a function]
-    expected: FAIL
-
-  [WebGL test #11: gl.isRenderbuffer(renderbuffer) should be true. Threw exception TypeError: gl.isRenderbuffer is not a function]
-    expected: FAIL
-
-  [WebGL test #13: gl.isTexture(texture) should be false. Threw exception TypeError: gl.isTexture is not a function]
-    expected: FAIL
-
-  [WebGL test #15: gl.isTexture(texture) should be true. Threw exception TypeError: gl.isTexture is not a function]
-    expected: FAIL
-
-  [WebGL test #17: gl.isProgram(program) should be true. Threw exception TypeError: gl.isProgram is not a function]
-    expected: FAIL
-
-  [WebGL test #19: gl.isProgram(program) should be false. Threw exception TypeError: gl.isProgram is not a function]
-    expected: FAIL
-
-  [WebGL test #21: gl.isShader(shader) should be true. Threw exception TypeError: gl.isShader is not a function]
-    expected: FAIL
-
-  [WebGL test #23: gl.isShader(shader) should be false. Threw exception TypeError: gl.isShader is not a function]
-    expected: FAIL
-

tests/wpt/metadata/webgl/conformance-1.0.3/conformance/misc/object-deletion-behaviour.html.ini

@@ -14,10 +14,7 @@
   [WebGL test #14: gl.isShader(fragmentShader) should be true. Threw exception TypeError: gl.isShader is not a function]
     expected: FAIL
 
-  [WebGL test #17: gl.isProgram(program) should be true. Threw exception TypeError: gl.isProgram is not a function]
+  [WebGL test #17: gl.isProgram(program) should be true. Was false.]
-    expected: FAIL
-
-  [WebGL test #20: gl.isProgram(program) should be false. Threw exception TypeError: gl.isProgram is not a function]
     expected: FAIL
 
   [WebGL test #21: gl.isShader(fragmentShader) should be false. Threw exception TypeError: gl.isShader is not a function]

tests/wpt/metadata/webgl/conformance-1.0.3/conformance/more/conformance/quickCheckAPI-B1.html.ini

@@ -1,5 +0,0 @@
-[quickCheckAPI-B1.html]
-  type: testharness
-  [WebGL test #0: testValidArgs]
-    expected: FAIL
-

tests/wpt/metadata/webgl/conformance-1.0.3/conformance/more/functions/isTestsBadArgs.html.ini

@@ -1,38 +0,0 @@
-[isTestsBadArgs.html]
-  type: testharness
-  [WebGL test #30: gl.isBuffer(null) should be false. Threw exception TypeError: gl.isBuffer is not a function]
-    expected: FAIL
-
-  [WebGL test #31: gl.isBuffer(undefined) should be false. Threw exception TypeError: gl.isBuffer is not a function]
-    expected: FAIL
-
-  [WebGL test #32: gl.isFramebuffer(null) should be false. Threw exception TypeError: gl.isFramebuffer is not a function]
-    expected: FAIL
-
-  [WebGL test #33: gl.isFramebuffer(undefined) should be false. Threw exception TypeError: gl.isFramebuffer is not a function]
-    expected: FAIL
-
-  [WebGL test #34: gl.isProgram(null) should be false. Threw exception TypeError: gl.isProgram is not a function]
-    expected: FAIL
-
-  [WebGL test #35: gl.isProgram(undefined) should be false. Threw exception TypeError: gl.isProgram is not a function]
-    expected: FAIL
-
-  [WebGL test #36: gl.isRenderbuffer(null) should be false. Threw exception TypeError: gl.isRenderbuffer is not a function]
-    expected: FAIL
-
-  [WebGL test #37: gl.isRenderbuffer(undefined) should be false. Threw exception TypeError: gl.isRenderbuffer is not a function]
-    expected: FAIL
-
-  [WebGL test #38: gl.isShader(null) should be false. Threw exception TypeError: gl.isShader is not a function]
-    expected: FAIL
-
-  [WebGL test #39: gl.isShader(undefined) should be false. Threw exception TypeError: gl.isShader is not a function]
-    expected: FAIL
-
-  [WebGL test #40: gl.isTexture(null) should be false. Threw exception TypeError: gl.isTexture is not a function]
-    expected: FAIL
-
-  [WebGL test #41: gl.isTexture(undefined) should be false. Threw exception TypeError: gl.isTexture is not a function]
-    expected: FAIL
-