1 files changed, 132 insertions, 0 deletions
diff --git a/dom/canvas/WebGLActiveInfo.cpp b/dom/canvas/WebGLActiveInfo.cpp
new file mode 100644
index 000000000..e13f47c0a
--- /dev/null
+++ b/dom/canvas/WebGLActiveInfo.cpp
@@ -0,0 +1,132 @@
+/* -*- 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 "WebGLActiveInfo.h"
+
+#include "mozilla/dom/WebGLRenderingContextBinding.h"
+
+namespace mozilla {
+
+static uint8_t
+ElemSizeFromType(GLenum elemType)
+{
+    switch (elemType) {
+    case LOCAL_GL_BOOL:
+    case LOCAL_GL_FLOAT:
+    case LOCAL_GL_INT:
+    case LOCAL_GL_UNSIGNED_INT:
+    case LOCAL_GL_SAMPLER_2D:
+    case LOCAL_GL_SAMPLER_3D:
+    case LOCAL_GL_SAMPLER_CUBE:
+    case LOCAL_GL_SAMPLER_2D_SHADOW:
+    case LOCAL_GL_SAMPLER_2D_ARRAY:
+    case LOCAL_GL_SAMPLER_2D_ARRAY_SHADOW:
+    case LOCAL_GL_SAMPLER_CUBE_SHADOW:
+    case LOCAL_GL_INT_SAMPLER_2D:
+    case LOCAL_GL_INT_SAMPLER_3D:
+    case LOCAL_GL_INT_SAMPLER_CUBE:
+    case LOCAL_GL_INT_SAMPLER_2D_ARRAY:
+    case LOCAL_GL_UNSIGNED_INT_SAMPLER_2D:
+    case LOCAL_GL_UNSIGNED_INT_SAMPLER_3D:
+    case LOCAL_GL_UNSIGNED_INT_SAMPLER_CUBE:
+    case LOCAL_GL_UNSIGNED_INT_SAMPLER_2D_ARRAY:
+        return 1;
+
+    case LOCAL_GL_BOOL_VEC2:
+    case LOCAL_GL_FLOAT_VEC2:
+    case LOCAL_GL_INT_VEC2:
+    case LOCAL_GL_UNSIGNED_INT_VEC2:
+        return 2;
+
+    case LOCAL_GL_BOOL_VEC3:
+    case LOCAL_GL_FLOAT_VEC3:
+    case LOCAL_GL_INT_VEC3:
+    case LOCAL_GL_UNSIGNED_INT_VEC3:
+        return 3;
+
+    case LOCAL_GL_BOOL_VEC4:
+    case LOCAL_GL_FLOAT_VEC4:
+    case LOCAL_GL_INT_VEC4:
+    case LOCAL_GL_UNSIGNED_INT_VEC4:
+    case LOCAL_GL_FLOAT_MAT2:
+        return 4;
+
+    case LOCAL_GL_FLOAT_MAT2x3:
+    case LOCAL_GL_FLOAT_MAT3x2:
+        return 6;
+
+    case LOCAL_GL_FLOAT_MAT2x4:
+    case LOCAL_GL_FLOAT_MAT4x2:
+        return 8;
+
+    case LOCAL_GL_FLOAT_MAT3:
+        return 9;
+
+    case LOCAL_GL_FLOAT_MAT3x4:
+    case LOCAL_GL_FLOAT_MAT4x3:
+        return 12;
+
+    case LOCAL_GL_FLOAT_MAT4:
+        return 16;
+
+    default:
+        MOZ_CRASH("GFX: Bad `elemType`.");
+    }
+}
+
+////////////////////
+
+WebGLActiveInfo::WebGLActiveInfo(WebGLContext* webgl, GLint elemCount, GLenum elemType,
+                                 bool isArray, const nsACString& baseUserName,
+                                 const nsACString& baseMappedName)
+    : mWebGL(webgl)
+    , mElemCount(elemCount)
+    , mElemType(elemType)
+    , mBaseUserName(baseUserName)
+    , mIsArray(isArray)
+    , mElemSize(ElemSizeFromType(elemType))
+    , mBaseMappedName(baseMappedName)
+{ }
+
+bool
+WebGLActiveInfo::IsSampler() const
+{
+    switch (mElemType) {
+    case LOCAL_GL_SAMPLER_2D:
+    case LOCAL_GL_SAMPLER_3D:
+    case LOCAL_GL_SAMPLER_CUBE:
+    case LOCAL_GL_SAMPLER_2D_SHADOW:
+    case LOCAL_GL_SAMPLER_2D_ARRAY:
+    case LOCAL_GL_SAMPLER_2D_ARRAY_SHADOW:
+    case LOCAL_GL_SAMPLER_CUBE_SHADOW:
+    case LOCAL_GL_INT_SAMPLER_2D:
+    case LOCAL_GL_INT_SAMPLER_3D:
+    case LOCAL_GL_INT_SAMPLER_CUBE:
+    case LOCAL_GL_INT_SAMPLER_2D_ARRAY:
+    case LOCAL_GL_UNSIGNED_INT_SAMPLER_2D:
+    case LOCAL_GL_UNSIGNED_INT_SAMPLER_3D:
+    case LOCAL_GL_UNSIGNED_INT_SAMPLER_CUBE:
+    case LOCAL_GL_UNSIGNED_INT_SAMPLER_2D_ARRAY:
+        return true;
+
+    default:
+        return false;
+    }
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+JSObject*
+WebGLActiveInfo::WrapObject(JSContext* js, JS::Handle<JSObject*> givenProto)
+{
+    return dom::WebGLActiveInfoBinding::Wrap(js, this, givenProto);
+}
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(WebGLActiveInfo)
+
+NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(WebGLActiveInfo, AddRef)
+NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(WebGLActiveInfo, Release)
+
+} // namespace mozilla