1 files changed, 92 insertions, 0 deletions
diff --git a/dom/canvas/WebGL2ContextVertices.cpp b/dom/canvas/WebGL2ContextVertices.cpp
new file mode 100644
index 000000000..5c1b2fd60
--- /dev/null
+++ b/dom/canvas/WebGL2ContextVertices.cpp
@@ -0,0 +1,92 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 "WebGL2Context.h"
+
+#include "GLContext.h"
+#include "WebGLVertexArray.h"
+#include "WebGLVertexAttribData.h"
+
+#include "mozilla/Casting.h"
+
+namespace mozilla {
+
+bool
+WebGL2Context::ValidateAttribPointerType(bool integerMode, GLenum type,
+                                         uint32_t* out_alignment, const char* info)
+{
+  MOZ_ASSERT(out_alignment);
+
+  switch (type) {
+  case LOCAL_GL_BYTE:
+  case LOCAL_GL_UNSIGNED_BYTE:
+    *out_alignment = 1;
+    return true;
+
+  case LOCAL_GL_SHORT:
+  case LOCAL_GL_UNSIGNED_SHORT:
+    *out_alignment = 2;
+    return true;
+
+  case LOCAL_GL_INT:
+  case LOCAL_GL_UNSIGNED_INT:
+    *out_alignment = 4;
+    return true;
+  }
+
+  if (!integerMode) {
+    switch (type) {
+    case LOCAL_GL_HALF_FLOAT:
+      *out_alignment = 2;
+      return true;
+
+    case LOCAL_GL_FLOAT:
+    case LOCAL_GL_FIXED:
+    case LOCAL_GL_INT_2_10_10_10_REV:
+    case LOCAL_GL_UNSIGNED_INT_2_10_10_10_REV:
+      *out_alignment = 4;
+      return true;
+    }
+  }
+
+  ErrorInvalidEnum("%s: invalid enum value 0x%x", info, type);
+  return false;
+}
+
+// -------------------------------------------------------------------------
+// Vertex Attributes
+
+void
+WebGL2Context::VertexAttribIPointer(GLuint index, GLint size, GLenum type, GLsizei stride,
+                                    GLintptr offset)
+{
+  if (IsContextLost())
+    return;
+
+  if (!ValidateAttribIndex(index, "vertexAttribIPointer"))
+    return;
+
+  if (!ValidateAttribPointer(true, index, size, type, LOCAL_GL_FALSE, stride, offset,
+                             "vertexAttribIPointer"))
+  {
+    return;
+  }
+
+  MOZ_ASSERT(mBoundVertexArray);
+
+  InvalidateBufferFetching();
+
+  MakeContextCurrent();
+  gl->fVertexAttribIPointer(index, size, type, stride, reinterpret_cast<void*>(offset));
+
+  WebGLVertexAttribData& vd = mBoundVertexArray->mAttribs[index];
+  const bool integerFunc = true;
+  const bool normalized = false;
+  vd.VertexAttribPointer(integerFunc, mBoundArrayBuffer, size, type, normalized, stride,
+                         offset);
+}
+
+} // namespace mozilla