1 files changed, 206 insertions, 0 deletions
diff --git a/gfx/angle/src/libANGLE/TransformFeedback.cpp b/gfx/angle/src/libANGLE/TransformFeedback.cpp
new file mode 100755
index 000000000..293c91b31
--- /dev/null
+++ b/gfx/angle/src/libANGLE/TransformFeedback.cpp
@@ -0,0 +1,206 @@
+//
+// Copyright (c) 2014 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+#include "libANGLE/TransformFeedback.h"
+
+#include "libANGLE/Buffer.h"
+#include "libANGLE/Caps.h"
+#include "libANGLE/ContextState.h"
+#include "libANGLE/Program.h"
+#include "libANGLE/renderer/GLImplFactory.h"
+#include "libANGLE/renderer/TransformFeedbackImpl.h"
+
+namespace gl
+{
+
+TransformFeedbackState::TransformFeedbackState(size_t maxIndexedBuffers)
+    : mLabel(),
+      mActive(false),
+      mPrimitiveMode(GL_NONE),
+      mPaused(false),
+      mProgram(nullptr),
+      mGenericBuffer(),
+      mIndexedBuffers(maxIndexedBuffers)
+{
+}
+
+const BindingPointer<Buffer> &TransformFeedbackState::getGenericBuffer() const
+{
+    return mGenericBuffer;
+}
+
+const OffsetBindingPointer<Buffer> &TransformFeedbackState::getIndexedBuffer(size_t idx) const
+{
+    return mIndexedBuffers[idx];
+}
+
+const std::vector<OffsetBindingPointer<Buffer>> &TransformFeedbackState::getIndexedBuffers() const
+{
+    return mIndexedBuffers;
+}
+
+TransformFeedback::TransformFeedback(rx::GLImplFactory *implFactory, GLuint id, const Caps &caps)
+    : RefCountObject(id),
+      mState(caps.maxTransformFeedbackSeparateAttributes),
+      mImplementation(implFactory->createTransformFeedback(mState))
+{
+    ASSERT(mImplementation != nullptr);
+}
+
+TransformFeedback::~TransformFeedback()
+{
+    if (mState.mProgram)
+    {
+        mState.mProgram->release();
+        mState.mProgram = nullptr;
+    }
+    mState.mGenericBuffer.set(nullptr);
+    for (size_t i = 0; i < mState.mIndexedBuffers.size(); i++)
+    {
+        mState.mIndexedBuffers[i].set(nullptr);
+    }
+
+    SafeDelete(mImplementation);
+}
+
+void TransformFeedback::setLabel(const std::string &label)
+{
+    mState.mLabel = label;
+}
+
+const std::string &TransformFeedback::getLabel() const
+{
+    return mState.mLabel;
+}
+
+void TransformFeedback::begin(GLenum primitiveMode, Program *program)
+{
+    mState.mActive        = true;
+    mState.mPrimitiveMode = primitiveMode;
+    mState.mPaused        = false;
+    mImplementation->begin(primitiveMode);
+    bindProgram(program);
+}
+
+void TransformFeedback::end()
+{
+    mState.mActive        = false;
+    mState.mPrimitiveMode = GL_NONE;
+    mState.mPaused        = false;
+    mImplementation->end();
+    if (mState.mProgram)
+    {
+        mState.mProgram->release();
+        mState.mProgram = nullptr;
+    }
+}
+
+void TransformFeedback::pause()
+{
+    mState.mPaused = true;
+    mImplementation->pause();
+}
+
+void TransformFeedback::resume()
+{
+    mState.mPaused = false;
+    mImplementation->resume();
+}
+
+bool TransformFeedback::isActive() const
+{
+    return mState.mActive;
+}
+
+bool TransformFeedback::isPaused() const
+{
+    return mState.mPaused;
+}
+
+GLenum TransformFeedback::getPrimitiveMode() const
+{
+    return mState.mPrimitiveMode;
+}
+
+void TransformFeedback::bindProgram(Program *program)
+{
+    if (mState.mProgram != program)
+    {
+        if (mState.mProgram != nullptr)
+        {
+            mState.mProgram->release();
+        }
+        mState.mProgram = program;
+        if (mState.mProgram != nullptr)
+        {
+            mState.mProgram->addRef();
+        }
+    }
+}
+
+bool TransformFeedback::hasBoundProgram(GLuint program) const
+{
+    return mState.mProgram != nullptr && mState.mProgram->id() == program;
+}
+
+void TransformFeedback::bindGenericBuffer(Buffer *buffer)
+{
+    mState.mGenericBuffer.set(buffer);
+    mImplementation->bindGenericBuffer(mState.mGenericBuffer);
+}
+
+void TransformFeedback::detachBuffer(GLuint bufferName)
+{
+    for (size_t index = 0; index < mState.mIndexedBuffers.size(); index++)
+    {
+        if (mState.mIndexedBuffers[index].id() == bufferName)
+        {
+            mState.mIndexedBuffers[index].set(nullptr);
+            mImplementation->bindIndexedBuffer(index, mState.mIndexedBuffers[index]);
+        }
+    }
+
+    if (mState.mGenericBuffer.id() == bufferName)
+    {
+        mState.mGenericBuffer.set(nullptr);
+        mImplementation->bindGenericBuffer(mState.mGenericBuffer);
+    }
+}
+
+const BindingPointer<Buffer> &TransformFeedback::getGenericBuffer() const
+{
+    return mState.mGenericBuffer;
+}
+
+void TransformFeedback::bindIndexedBuffer(size_t index, Buffer *buffer, size_t offset, size_t size)
+{
+    ASSERT(index < mState.mIndexedBuffers.size());
+    mState.mIndexedBuffers[index].set(buffer, offset, size);
+    mImplementation->bindIndexedBuffer(index, mState.mIndexedBuffers[index]);
+}
+
+const OffsetBindingPointer<Buffer> &TransformFeedback::getIndexedBuffer(size_t index) const
+{
+    ASSERT(index < mState.mIndexedBuffers.size());
+    return mState.mIndexedBuffers[index];
+}
+
+size_t TransformFeedback::getIndexedBufferCount() const
+{
+    return mState.mIndexedBuffers.size();
+}
+
+rx::TransformFeedbackImpl *TransformFeedback::getImplementation()
+{
+    return mImplementation;
+}
+
+const rx::TransformFeedbackImpl *TransformFeedback::getImplementation() const
+{
+    return mImplementation;
+}
+
+}