Merge WebKit at r75315: Initial merge by git.

Change-Id: I570314b346ce101c935ed22a626b48c2af266b84

1 files changed, 160 insertions, 0 deletions

diff --git a/Source/WebCore/html/canvas/WebGLProgram.cpp b/Source/WebCore/html/canvas/WebGLProgram.cpp
new file mode 100644
index 0000000..b2c2086
--- /dev/null
+++ b/Source/WebCore/html/canvas/WebGLProgram.cpp
@@ -0,0 +1,160 @@
+/*
+ * Copyright (C) 2009 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 COMPUTER, 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 COMPUTER, 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"
+
+#if ENABLE(3D_CANVAS)
+
+#include "WebGLProgram.h"
+
+#include "WebGLRenderingContext.h"
+
+namespace WebCore {
+    
+PassRefPtr<WebGLProgram> WebGLProgram::create(WebGLRenderingContext* ctx)
+{
+    return adoptRef(new WebGLProgram(ctx));
+}
+
+WebGLProgram::WebGLProgram(WebGLRenderingContext* ctx)
+    : WebGLObject(ctx)
+    , m_linkStatus(false)
+    , m_linkCount(0)
+{
+    setObject(context()->graphicsContext3D()->createProgram());
+}
+
+void WebGLProgram::deleteObjectImpl(Platform3DObject obj)
+{
+    context()->graphicsContext3D()->deleteProgram(obj);
+    if (m_vertexShader) {
+        m_vertexShader->onDetached();
+        m_vertexShader = 0;
+    }
+    if (m_fragmentShader) {
+        m_fragmentShader->onDetached();
+        m_fragmentShader = 0;
+    }
+}
+
+bool WebGLProgram::cacheActiveAttribLocations()
+{
+    m_activeAttribLocations.clear();
+    if (!object())
+        return false;
+    GraphicsContext3D* context3d = context()->graphicsContext3D();
+
+    // Assume link status has already been cached.
+    if (!m_linkStatus)
+        return false;
+
+    int numAttribs = 0;
+    context3d->getProgramiv(object(), GraphicsContext3D::ACTIVE_ATTRIBUTES, &numAttribs);
+    m_activeAttribLocations.resize(static_cast<size_t>(numAttribs));
+    for (int i = 0; i < numAttribs; ++i) {
+        ActiveInfo info;
+        context3d->getActiveAttrib(object(), i, info);
+        m_activeAttribLocations[i] = context3d->getAttribLocation(object(), info.name.charactersWithNullTermination());
+    }
+
+    return true;
+}
+
+int WebGLProgram::numActiveAttribLocations() const
+{
+    return static_cast<int>(m_activeAttribLocations.size());
+}
+
+int WebGLProgram::getActiveAttribLocation(int index) const
+{
+    if (index < 0 || index >= numActiveAttribLocations())
+        return -1;
+    return m_activeAttribLocations[static_cast<size_t>(index)];
+}
+
+bool WebGLProgram::isUsingVertexAttrib0() const
+{
+    for (int ii = 0; ii < numActiveAttribLocations(); ++ii) {
+        if (!getActiveAttribLocation(ii))
+            return true;
+    }
+    return false;
+}
+
+WebGLShader* WebGLProgram::getAttachedShader(GraphicsContext3D::WebGLEnumType type)
+{
+    switch (type) {
+    case GraphicsContext3D::VERTEX_SHADER:
+        return m_vertexShader.get();
+    case GraphicsContext3D::FRAGMENT_SHADER:
+        return m_fragmentShader.get();
+    default:
+        return 0;
+    }
+}
+
+bool WebGLProgram::attachShader(WebGLShader* shader)
+{
+    if (!shader || !shader->object())
+        return false;
+    switch (shader->getType()) {
+    case GraphicsContext3D::VERTEX_SHADER:
+        if (m_vertexShader)
+            return false;
+        m_vertexShader = shader;
+        return true;
+    case GraphicsContext3D::FRAGMENT_SHADER:
+        if (m_fragmentShader)
+            return false;
+        m_fragmentShader = shader;
+        return true;
+    default:
+        return false;
+    }
+}
+
+bool WebGLProgram::detachShader(WebGLShader* shader)
+{
+    if (!shader || !shader->object())
+        return false;
+    switch (shader->getType()) {
+    case GraphicsContext3D::VERTEX_SHADER:
+        if (m_vertexShader != shader)
+            return false;
+        m_vertexShader = 0;
+        return true;
+    case GraphicsContext3D::FRAGMENT_SHADER:
+        if (m_fragmentShader != shader)
+            return false;
+        m_fragmentShader = 0;
+        return true;
+    default:
+        return false;
+    }
+}
+
+}
+
+#endif // ENABLE(3D_CANVAS)