1 files changed, 135 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/libANGLE/Context.inl.h b/gfx/angle/checkout/src/libANGLE/Context.inl.h
new file mode 100644
index 0000000000..4738160c3f
--- /dev/null
+++ b/gfx/angle/checkout/src/libANGLE/Context.inl.h
@@ -0,0 +1,135 @@
+//
+// Copyright 2018 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.
+//
+
+// Context.inl.h: Defines inline functions of gl::Context class
+// Has to be included after libANGLE/Context.h when using one
+// of the defined functions
+
+#ifndef LIBANGLE_CONTEXT_INL_H_
+#define LIBANGLE_CONTEXT_INL_H_
+
+#include "libANGLE/GLES1Renderer.h"
+#include "libANGLE/renderer/ContextImpl.h"
+
+#define ANGLE_HANDLE_ERR(X) \
+    (void)(X);              \
+    return;
+#define ANGLE_CONTEXT_TRY(EXPR) ANGLE_TRY_TEMPLATE(EXPR, ANGLE_HANDLE_ERR)
+
+namespace gl
+{
+constexpr angle::PackedEnumMap<PrimitiveMode, GLsizei> kMinimumPrimitiveCounts = {{
+    {PrimitiveMode::Points, 1},
+    {PrimitiveMode::Lines, 2},
+    {PrimitiveMode::LineLoop, 2},
+    {PrimitiveMode::LineStrip, 2},
+    {PrimitiveMode::Triangles, 3},
+    {PrimitiveMode::TriangleStrip, 3},
+    {PrimitiveMode::TriangleFan, 3},
+    {PrimitiveMode::LinesAdjacency, 2},
+    {PrimitiveMode::LineStripAdjacency, 2},
+    {PrimitiveMode::TrianglesAdjacency, 3},
+    {PrimitiveMode::TriangleStripAdjacency, 3},
+}};
+
+ANGLE_INLINE void MarkTransformFeedbackBufferUsage(const Context *context,
+                                                   GLsizei count,
+                                                   GLsizei instanceCount)
+{
+    if (context->getStateCache().isTransformFeedbackActiveUnpaused())
+    {
+        TransformFeedback *transformFeedback = context->getState().getCurrentTransformFeedback();
+        transformFeedback->onVerticesDrawn(context, count, instanceCount);
+    }
+}
+
+// Return true if the draw is a no-op, else return false.
+//  A no-op draw occurs if the count of vertices is less than the minimum required to
+//  have a valid primitive for this mode (0 for points, 0-1 for lines, 0-2 for tris).
+ANGLE_INLINE bool Context::noopDraw(PrimitiveMode mode, GLsizei count)
+{
+    return count < kMinimumPrimitiveCounts[mode];
+}
+
+ANGLE_INLINE angle::Result Context::syncDirtyBits()
+{
+    const State::DirtyBits &dirtyBits = mState.getDirtyBits();
+    ANGLE_TRY(mImplementation->syncState(this, dirtyBits, mAllDirtyBits));
+    mState.clearDirtyBits();
+    return angle::Result::Continue;
+}
+
+ANGLE_INLINE angle::Result Context::syncDirtyBits(const State::DirtyBits &bitMask)
+{
+    const State::DirtyBits &dirtyBits = (mState.getDirtyBits() & bitMask);
+    ANGLE_TRY(mImplementation->syncState(this, dirtyBits, bitMask));
+    mState.clearDirtyBits(dirtyBits);
+    return angle::Result::Continue;
+}
+
+ANGLE_INLINE angle::Result Context::syncDirtyObjects(const State::DirtyObjects &objectMask)
+{
+    return mState.syncDirtyObjects(this, objectMask);
+}
+
+ANGLE_INLINE angle::Result Context::prepareForDraw(PrimitiveMode mode)
+{
+    if (mGLES1Renderer)
+    {
+        ANGLE_TRY(mGLES1Renderer->prepareForDraw(mode, this, &mState));
+    }
+
+    ANGLE_TRY(syncDirtyObjects(mDrawDirtyObjects));
+    ASSERT(!isRobustResourceInitEnabled() ||
+           !mState.getDrawFramebuffer()->hasResourceThatNeedsInit());
+    return syncDirtyBits();
+}
+
+ANGLE_INLINE void Context::drawArrays(PrimitiveMode mode, GLint first, GLsizei count)
+{
+    // No-op if count draws no primitives for given mode
+    if (noopDraw(mode, count))
+    {
+        return;
+    }
+
+    ANGLE_CONTEXT_TRY(prepareForDraw(mode));
+    ANGLE_CONTEXT_TRY(mImplementation->drawArrays(this, mode, first, count));
+    MarkTransformFeedbackBufferUsage(this, count, 1);
+}
+
+ANGLE_INLINE void Context::drawElements(PrimitiveMode mode,
+                                        GLsizei count,
+                                        DrawElementsType type,
+                                        const void *indices)
+{
+    // No-op if count draws no primitives for given mode
+    if (noopDraw(mode, count))
+    {
+        return;
+    }
+
+    ANGLE_CONTEXT_TRY(prepareForDraw(mode));
+    ANGLE_CONTEXT_TRY(mImplementation->drawElements(this, mode, count, type, indices));
+}
+
+ANGLE_INLINE void StateCache::onBufferBindingChange(Context *context)
+{
+    updateBasicDrawStatesError();
+    updateBasicDrawElementsError();
+}
+
+ANGLE_INLINE void Context::bindBuffer(BufferBinding target, GLuint buffer)
+{
+    Buffer *bufferObject =
+        mState.mBufferManager->checkBufferAllocation(mImplementation.get(), buffer);
+    mState.setBufferBinding(this, target, bufferObject);
+    mStateCache.onBufferBindingChange(this);
+}
+
+}  // namespace gl
+
+#endif  // LIBANGLE_CONTEXT_INL_H_