webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 107 insertions, 0 deletions

diff --git a/Source/WebCore/html/canvas/WebGLVertexArrayObjectBase.cpp b/Source/WebCore/html/canvas/WebGLVertexArrayObjectBase.cpp
new file mode 100644
index 000000000..58dfa3d73
--- /dev/null
+++ b/Source/WebCore/html/canvas/WebGLVertexArrayObjectBase.cpp
@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2015-2017 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "WebGLVertexArrayObjectBase.h"
+
+#if ENABLE(WEBGL)
+
+#include "WebGLRenderingContextBase.h"
+
+namespace WebCore {
+
+WebGLVertexArrayObjectBase::WebGLVertexArrayObjectBase(WebGLRenderingContextBase& context, Type type)
+    : WebGLContextObject(context)
+    , m_type(type)
+{
+    m_vertexAttribState.resize(context.getMaxVertexAttribs());
+}
+
+void WebGLVertexArrayObjectBase::setElementArrayBuffer(WebGLBuffer* buffer)
+{
+    if (buffer)
+        buffer->onAttached();
+    if (m_boundElementArrayBuffer)
+        m_boundElementArrayBuffer->onDetached(context()->graphicsContext3D());
+    m_boundElementArrayBuffer = buffer;
+    
+}
+
+void WebGLVertexArrayObjectBase::setVertexAttribState(GC3Duint index, GC3Dsizei bytesPerElement, GC3Dint size, GC3Denum type, GC3Dboolean normalized, GC3Dsizei stride, GC3Dintptr offset, WebGLBuffer& buffer)
+{
+    GC3Dsizei validatedStride = stride ? stride : bytesPerElement;
+    
+    auto& state = m_vertexAttribState[index];
+    
+    buffer.onAttached();
+    if (state.bufferBinding)
+        state.bufferBinding->onDetached(context()->graphicsContext3D());
+    
+    state.bufferBinding = &buffer;
+    state.bytesPerElement = bytesPerElement;
+    state.size = size;
+    state.type = type;
+    state.normalized = normalized;
+    state.stride = validatedStride;
+    state.originalStride = stride;
+    state.offset = offset;
+}
+
+void WebGLVertexArrayObjectBase::unbindBuffer(WebGLBuffer& buffer)
+{
+    if (m_boundElementArrayBuffer == &buffer) {
+        m_boundElementArrayBuffer->onDetached(context()->graphicsContext3D());
+        m_boundElementArrayBuffer = nullptr;
+    }
+    
+    for (size_t i = 0; i < m_vertexAttribState.size(); ++i) {
+        auto& state = m_vertexAttribState[i];
+        if (state.bufferBinding == &buffer) {
+            buffer.onDetached(context()->graphicsContext3D());
+            
+            if (!i && !context()->isGLES2Compliant()) {
+                state.bufferBinding = context()->m_vertexAttrib0Buffer;
+                state.bufferBinding->onAttached();
+                state.bytesPerElement = 0;
+                state.size = 4;
+                state.type = GraphicsContext3D::FLOAT;
+                state.normalized = false;
+                state.stride = 16;
+                state.originalStride = 0;
+                state.offset = 0;
+            } else
+                state.bufferBinding = nullptr;
+        }
+    }
+}
+
+void WebGLVertexArrayObjectBase::setVertexAttribDivisor(GC3Duint index, GC3Duint divisor)
+{
+    m_vertexAttribState[index].divisor = divisor;
+}
+    
+}
+
+#endif // ENABLE(WEBGL)