Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 293 insertions, 0 deletions

diff --git a/gfx/angle/checkout/src/libANGLE/renderer/d3d/VertexBuffer.cpp b/gfx/angle/checkout/src/libANGLE/renderer/d3d/VertexBuffer.cpp
new file mode 100644
index 0000000000..7ad5080062
--- /dev/null
+++ b/gfx/angle/checkout/src/libANGLE/renderer/d3d/VertexBuffer.cpp
@@ -0,0 +1,293 @@
+//
+// Copyright (c) 2002-2012 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.
+//
+
+// VertexBuffer.cpp: Defines the abstract VertexBuffer class and VertexBufferInterface
+// class with derivations, classes that perform graphics API agnostic vertex buffer operations.
+
+#include "libANGLE/renderer/d3d/VertexBuffer.h"
+
+#include "common/mathutil.h"
+#include "libANGLE/Context.h"
+#include "libANGLE/VertexAttribute.h"
+#include "libANGLE/renderer/d3d/BufferD3D.h"
+#include "libANGLE/renderer/d3d/ContextD3D.h"
+
+namespace rx
+{
+
+// VertexBuffer Implementation
+unsigned int VertexBuffer::mNextSerial = 1;
+
+VertexBuffer::VertexBuffer() : mRefCount(1)
+{
+    updateSerial();
+}
+
+VertexBuffer::~VertexBuffer() {}
+
+void VertexBuffer::updateSerial()
+{
+    mSerial = mNextSerial++;
+}
+
+unsigned int VertexBuffer::getSerial() const
+{
+    return mSerial;
+}
+
+void VertexBuffer::addRef()
+{
+    mRefCount++;
+}
+
+void VertexBuffer::release()
+{
+    ASSERT(mRefCount > 0);
+    mRefCount--;
+
+    if (mRefCount == 0)
+    {
+        delete this;
+    }
+}
+
+// VertexBufferInterface Implementation
+VertexBufferInterface::VertexBufferInterface(BufferFactoryD3D *factory, bool dynamic)
+    : mFactory(factory), mVertexBuffer(factory->createVertexBuffer()), mDynamic(dynamic)
+{}
+
+VertexBufferInterface::~VertexBufferInterface()
+{
+    if (mVertexBuffer)
+    {
+        mVertexBuffer->release();
+        mVertexBuffer = nullptr;
+    }
+}
+
+unsigned int VertexBufferInterface::getSerial() const
+{
+    ASSERT(mVertexBuffer);
+    return mVertexBuffer->getSerial();
+}
+
+unsigned int VertexBufferInterface::getBufferSize() const
+{
+    ASSERT(mVertexBuffer);
+    return mVertexBuffer->getBufferSize();
+}
+
+angle::Result VertexBufferInterface::setBufferSize(const gl::Context *context, unsigned int size)
+{
+    ASSERT(mVertexBuffer);
+    if (mVertexBuffer->getBufferSize() == 0)
+    {
+        return mVertexBuffer->initialize(context, size, mDynamic);
+    }
+
+    return mVertexBuffer->setBufferSize(context, size);
+}
+
+angle::Result VertexBufferInterface::getSpaceRequired(const gl::Context *context,
+                                                      const gl::VertexAttribute &attrib,
+                                                      const gl::VertexBinding &binding,
+                                                      size_t count,
+                                                      GLsizei instances,
+                                                      unsigned int *spaceInBytesOut) const
+{
+    unsigned int spaceRequired = 0;
+    ANGLE_TRY(mFactory->getVertexSpaceRequired(context, attrib, binding, count, instances,
+                                               &spaceRequired));
+
+    // Align to 16-byte boundary
+    unsigned int alignedSpaceRequired = roundUp(spaceRequired, 16u);
+    ANGLE_CHECK_GL_ALLOC(GetImplAs<ContextD3D>(context), alignedSpaceRequired >= spaceRequired);
+
+    *spaceInBytesOut = alignedSpaceRequired;
+    return angle::Result::Continue;
+}
+
+angle::Result VertexBufferInterface::discard(const gl::Context *context)
+{
+    ASSERT(mVertexBuffer);
+    return mVertexBuffer->discard(context);
+}
+
+VertexBuffer *VertexBufferInterface::getVertexBuffer() const
+{
+    ASSERT(mVertexBuffer);
+    return mVertexBuffer;
+}
+
+// StreamingVertexBufferInterface Implementation
+StreamingVertexBufferInterface::StreamingVertexBufferInterface(BufferFactoryD3D *factory)
+    : VertexBufferInterface(factory, true), mWritePosition(0), mReservedSpace(0)
+{}
+
+angle::Result StreamingVertexBufferInterface::initialize(const gl::Context *context,
+                                                         std::size_t initialSize)
+{
+    return setBufferSize(context, static_cast<unsigned int>(initialSize));
+}
+
+void StreamingVertexBufferInterface::reset()
+{
+    if (mVertexBuffer)
+    {
+        mVertexBuffer->release();
+        mVertexBuffer = mFactory->createVertexBuffer();
+    }
+}
+
+StreamingVertexBufferInterface::~StreamingVertexBufferInterface() {}
+
+angle::Result StreamingVertexBufferInterface::reserveSpace(const gl::Context *context,
+                                                           unsigned int size)
+{
+    unsigned int curBufferSize = getBufferSize();
+    if (size > curBufferSize)
+    {
+        ANGLE_TRY(setBufferSize(context, std::max(size, 3 * curBufferSize / 2)));
+        mWritePosition = 0;
+    }
+    else if (mWritePosition + size > curBufferSize)
+    {
+        ANGLE_TRY(discard(context));
+        mWritePosition = 0;
+    }
+
+    mReservedSpace = size;
+    return angle::Result::Continue;
+}
+
+angle::Result StreamingVertexBufferInterface::storeDynamicAttribute(
+    const gl::Context *context,
+    const gl::VertexAttribute &attrib,
+    const gl::VertexBinding &binding,
+    gl::VertexAttribType currentValueType,
+    GLint start,
+    size_t count,
+    GLsizei instances,
+    unsigned int *outStreamOffset,
+    const uint8_t *sourceData)
+{
+    unsigned int spaceRequired = 0;
+    ANGLE_TRY(getSpaceRequired(context, attrib, binding, count, instances, &spaceRequired));
+
+    // Protect against integer overflow
+    angle::CheckedNumeric<unsigned int> checkedPosition(mWritePosition);
+    checkedPosition += spaceRequired;
+    ANGLE_CHECK_GL_ALLOC(GetImplAs<ContextD3D>(context), checkedPosition.IsValid());
+
+    mReservedSpace = 0;
+
+    ANGLE_TRY(mVertexBuffer->storeVertexAttributes(context, attrib, binding, currentValueType,
+                                                   start, count, instances, mWritePosition,
+                                                   sourceData));
+
+    if (outStreamOffset)
+    {
+        *outStreamOffset = mWritePosition;
+    }
+
+    mWritePosition += spaceRequired;
+
+    return angle::Result::Continue;
+}
+
+angle::Result StreamingVertexBufferInterface::reserveVertexSpace(const gl::Context *context,
+                                                                 const gl::VertexAttribute &attrib,
+                                                                 const gl::VertexBinding &binding,
+                                                                 size_t count,
+                                                                 GLsizei instances)
+{
+    unsigned int requiredSpace = 0;
+    ANGLE_TRY(mFactory->getVertexSpaceRequired(context, attrib, binding, count, instances,
+                                               &requiredSpace));
+
+    // Align to 16-byte boundary
+    auto alignedRequiredSpace = rx::CheckedRoundUp(requiredSpace, 16u);
+    alignedRequiredSpace += mReservedSpace;
+
+    // Protect against integer overflow
+    ANGLE_CHECK_GL_ALLOC(GetImplAs<ContextD3D>(context), alignedRequiredSpace.IsValid());
+
+    ANGLE_TRY(reserveSpace(context, alignedRequiredSpace.ValueOrDie()));
+
+    return angle::Result::Continue;
+}
+
+// StaticVertexBufferInterface Implementation
+StaticVertexBufferInterface::AttributeSignature::AttributeSignature()
+    : formatID(angle::FormatID::NONE), stride(0), offset(0)
+{}
+
+bool StaticVertexBufferInterface::AttributeSignature::matchesAttribute(
+    const gl::VertexAttribute &attrib,
+    const gl::VertexBinding &binding) const
+{
+    size_t attribStride = ComputeVertexAttributeStride(attrib, binding);
+
+    if (formatID != attrib.format->id || static_cast<GLuint>(stride) != attribStride)
+    {
+        return false;
+    }
+
+    size_t attribOffset =
+        (static_cast<size_t>(ComputeVertexAttributeOffset(attrib, binding)) % attribStride);
+    return (offset == attribOffset);
+}
+
+void StaticVertexBufferInterface::AttributeSignature::set(const gl::VertexAttribute &attrib,
+                                                          const gl::VertexBinding &binding)
+{
+    formatID = attrib.format->id;
+    offset = stride = static_cast<GLuint>(ComputeVertexAttributeStride(attrib, binding));
+    offset          = static_cast<size_t>(ComputeVertexAttributeOffset(attrib, binding)) %
+             ComputeVertexAttributeStride(attrib, binding);
+}
+
+StaticVertexBufferInterface::StaticVertexBufferInterface(BufferFactoryD3D *factory)
+    : VertexBufferInterface(factory, false)
+{}
+
+StaticVertexBufferInterface::~StaticVertexBufferInterface() {}
+
+bool StaticVertexBufferInterface::matchesAttribute(const gl::VertexAttribute &attrib,
+                                                   const gl::VertexBinding &binding) const
+{
+    return mSignature.matchesAttribute(attrib, binding);
+}
+
+void StaticVertexBufferInterface::setAttribute(const gl::VertexAttribute &attrib,
+                                               const gl::VertexBinding &binding)
+{
+    return mSignature.set(attrib, binding);
+}
+
+angle::Result StaticVertexBufferInterface::storeStaticAttribute(const gl::Context *context,
+                                                                const gl::VertexAttribute &attrib,
+                                                                const gl::VertexBinding &binding,
+                                                                GLint start,
+                                                                GLsizei count,
+                                                                GLsizei instances,
+                                                                const uint8_t *sourceData)
+{
+    unsigned int spaceRequired = 0;
+    ANGLE_TRY(getSpaceRequired(context, attrib, binding, count, instances, &spaceRequired));
+    ANGLE_TRY(setBufferSize(context, spaceRequired));
+
+    ASSERT(attrib.enabled);
+    ANGLE_TRY(mVertexBuffer->storeVertexAttributes(context, attrib, binding,
+                                                   gl::VertexAttribType::InvalidEnum, start, count,
+                                                   instances, 0, sourceData));
+
+    mSignature.set(attrib, binding);
+    mVertexBuffer->hintUnmapResource();
+    return angle::Result::Continue;
+}
+
+}  // namespace rx