1 files changed, 78 insertions, 0 deletions
diff --git a/dom/canvas/WebGLExtensionInstancedArrays.cpp b/dom/canvas/WebGLExtensionInstancedArrays.cpp
new file mode 100644
index 000000000..10d0533fe
--- /dev/null
+++ b/dom/canvas/WebGLExtensionInstancedArrays.cpp
@@ -0,0 +1,78 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "WebGLExtensions.h"
+
+#include "GLContext.h"
+#include "mozilla/dom/WebGLRenderingContextBinding.h"
+#include "WebGLContext.h"
+
+namespace mozilla {
+
+WebGLExtensionInstancedArrays::WebGLExtensionInstancedArrays(WebGLContext* webgl)
+  : WebGLExtensionBase(webgl)
+{
+    MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
+}
+
+WebGLExtensionInstancedArrays::~WebGLExtensionInstancedArrays()
+{
+}
+
+void
+WebGLExtensionInstancedArrays::DrawArraysInstancedANGLE(GLenum mode,
+                                                        GLint first,
+                                                        GLsizei count,
+                                                        GLsizei primcount)
+{
+    if (mIsLost) {
+        mContext->ErrorInvalidOperation("%s: Extension is lost.",
+                                        "drawArraysInstancedANGLE");
+        return;
+    }
+
+    mContext->DrawArraysInstanced(mode, first, count, primcount);
+}
+
+void
+WebGLExtensionInstancedArrays::DrawElementsInstancedANGLE(GLenum mode,
+                                                          GLsizei count,
+                                                          GLenum type,
+                                                          WebGLintptr offset,
+                                                          GLsizei primcount)
+{
+    if (mIsLost) {
+        mContext->ErrorInvalidOperation("%s: Extension is lost.",
+                                        "drawElementsInstancedANGLE");
+        return;
+    }
+
+    mContext->DrawElementsInstanced(mode, count, type, offset, primcount);
+}
+
+void
+WebGLExtensionInstancedArrays::VertexAttribDivisorANGLE(GLuint index,
+                                                        GLuint divisor)
+{
+    if (mIsLost) {
+        mContext->ErrorInvalidOperation("%s: Extension is lost.",
+                                        "vertexAttribDivisorANGLE");
+        return;
+    }
+
+    mContext->VertexAttribDivisor(index, divisor);
+}
+
+bool
+WebGLExtensionInstancedArrays::IsSupported(const WebGLContext* webgl)
+{
+    gl::GLContext* gl = webgl->GL();
+    return gl->IsSupported(gl::GLFeature::draw_instanced) &&
+           gl->IsSupported(gl::GLFeature::instanced_arrays);
+}
+
+IMPL_WEBGL_EXTENSION_GOOP(WebGLExtensionInstancedArrays, ANGLE_instanced_arrays)
+
+} // namespace mozilla