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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /gfx/angle/checkout/src/libANGLE/Buffer.h
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/angle/checkout/src/libANGLE/Buffer.h')
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+//
+// Copyright 2002 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.
+//
+
+// Buffer.h: Defines the gl::Buffer class, representing storage of vertex and/or
+// index data. Implements GL buffer objects and related functionality.
+// [OpenGL ES 2.0.24] section 2.9 page 21.
+
+#ifndef LIBANGLE_BUFFER_H_
+#define LIBANGLE_BUFFER_H_
+
+#include "common/PackedEnums.h"
+#include "common/angleutils.h"
+#include "libANGLE/Debug.h"
+#include "libANGLE/Error.h"
+#include "libANGLE/IndexRangeCache.h"
+#include "libANGLE/Observer.h"
+#include "libANGLE/RefCountObject.h"
+#include "libANGLE/angletypes.h"
+
+namespace rx
+{
+class BufferImpl;
+class GLImplFactory;
+} // namespace rx
+
+namespace gl
+{
+class Buffer;
+class Context;
+
+class BufferState final : angle::NonCopyable
+{
+ public:
+ BufferState();
+ ~BufferState();
+
+ BufferUsage getUsage() const { return mUsage; }
+ GLbitfield getAccessFlags() const { return mAccessFlags; }
+ GLenum getAccess() const { return mAccess; }
+ GLboolean isMapped() const { return mMapped; }
+ void *getMapPointer() const { return mMapPointer; }
+ GLint64 getMapOffset() const { return mMapOffset; }
+ GLint64 getMapLength() const { return mMapLength; }
+ GLint64 getSize() const { return mSize; }
+ bool isBoundForTransformFeedback() const { return mTransformFeedbackIndexedBindingCount != 0; }
+ std::string getLabel() const { return mLabel; }
+
+ private:
+ friend class Buffer;
+
+ std::string mLabel;
+
+ BufferUsage mUsage;
+ GLint64 mSize;
+ GLbitfield mAccessFlags;
+ GLenum mAccess;
+ GLboolean mMapped;
+ void *mMapPointer;
+ GLint64 mMapOffset;
+ GLint64 mMapLength;
+ int mBindingCount;
+ int mTransformFeedbackIndexedBindingCount;
+ int mTransformFeedbackGenericBindingCount;
+ GLboolean mImmutable;
+ GLbitfield mStorageExtUsageFlags;
+ GLboolean mExternal;
+};
+
+// Some Vertex Array Objects track buffer data updates.
+struct ContentsObserver
+{
+ VertexArray *vertexArray = nullptr;
+ uint32_t bufferIndex = 0;
+};
+
+ANGLE_INLINE bool operator==(const ContentsObserver &lhs, const ContentsObserver &rhs)
+{
+ return lhs.vertexArray == rhs.vertexArray && lhs.bufferIndex == rhs.bufferIndex;
+}
+
+class Buffer final : public RefCountObject<BufferID>,
+ public LabeledObject,
+ public angle::ObserverInterface,
+ public angle::Subject
+{
+ public:
+ Buffer(rx::GLImplFactory *factory, BufferID id);
+ ~Buffer() override;
+ void onDestroy(const Context *context) override;
+
+ angle::Result setLabel(const Context *context, const std::string &label) override;
+ const std::string &getLabel() const override;
+
+ angle::Result bufferStorageExternal(Context *context,
+ BufferBinding target,
+ GLsizeiptr size,
+ GLeglClientBufferEXT clientBuffer,
+ GLbitfield flags);
+ angle::Result bufferStorage(Context *context,
+ BufferBinding target,
+ GLsizeiptr size,
+ const void *data,
+ GLbitfield flags);
+ angle::Result bufferData(Context *context,
+ BufferBinding target,
+ const void *data,
+ GLsizeiptr size,
+ BufferUsage usage);
+ angle::Result bufferSubData(const Context *context,
+ BufferBinding target,
+ const void *data,
+ GLsizeiptr size,
+ GLintptr offset);
+ angle::Result copyBufferSubData(const Context *context,
+ Buffer *source,
+ GLintptr sourceOffset,
+ GLintptr destOffset,
+ GLsizeiptr size);
+ angle::Result map(const Context *context, GLenum access);
+ angle::Result mapRange(const Context *context,
+ GLintptr offset,
+ GLsizeiptr length,
+ GLbitfield access);
+ angle::Result unmap(const Context *context, GLboolean *result);
+
+ // These are called when another operation changes Buffer data.
+ void onDataChanged();
+
+ angle::Result getIndexRange(const gl::Context *context,
+ DrawElementsType type,
+ size_t offset,
+ size_t count,
+ bool primitiveRestartEnabled,
+ IndexRange *outRange) const;
+ const BufferState &getState() const { return mState; }
+ BufferUsage getUsage() const { return mState.mUsage; }
+ GLbitfield getAccessFlags() const { return mState.mAccessFlags; }
+ GLenum getAccess() const { return mState.mAccess; }
+ GLboolean isMapped() const { return mState.mMapped; }
+ bool isPersistentlyMapped() const
+ {
+ return (mState.mStorageExtUsageFlags & GL_MAP_PERSISTENT_BIT_EXT) != 0;
+ }
+ void *getMapPointer() const { return mState.mMapPointer; }
+ GLint64 getMapOffset() const { return mState.mMapOffset; }
+ GLint64 getMapLength() const { return mState.mMapLength; }
+ GLint64 getSize() const { return mState.mSize; }
+ GLint64 getMemorySize() const;
+ GLboolean isImmutable() const { return mState.mImmutable; }
+ GLbitfield getStorageExtUsageFlags() const { return mState.mStorageExtUsageFlags; }
+
+ // Buffers are always initialized immediately when allocated
+ InitState initState() const { return InitState::Initialized; }
+
+ rx::BufferImpl *getImplementation() const { return mImpl; }
+
+ // Note: we pass "isWebGL" to this function to clarify it's only valid if WebGL is enabled.
+ // We pass the boolean flag instead of the pointer because this header can't read Context.h.
+ ANGLE_INLINE bool hasWebGLXFBBindingConflict(bool isWebGL) const
+ {
+ if (!isWebGL)
+ {
+ return false;
+ }
+
+ // The transform feedback generic binding point is not an indexed binding point but it also
+ // does not count as a non-transform-feedback use of the buffer, so we subtract it from the
+ // binding count when checking if the buffer is bound to a non-transform-feedback location.
+ // See https://crbug.com/853978
+ return mState.mTransformFeedbackIndexedBindingCount > 0 &&
+ mState.mTransformFeedbackIndexedBindingCount !=
+ mState.mBindingCount - mState.mTransformFeedbackGenericBindingCount;
+ }
+
+ bool isDoubleBoundForTransformFeedback() const;
+ void onTFBindingChanged(const Context *context, bool bound, bool indexed);
+ void onNonTFBindingChanged(int incr) { mState.mBindingCount += incr; }
+ angle::Result getSubData(const gl::Context *context,
+ GLintptr offset,
+ GLsizeiptr size,
+ void *outData);
+
+ // angle::ObserverInterface implementation.
+ void onSubjectStateChange(angle::SubjectIndex index, angle::SubjectMessage message) override;
+
+ void addContentsObserver(VertexArray *vertexArray, uint32_t bufferIndex);
+ void removeContentsObserver(VertexArray *vertexArray, uint32_t bufferIndex);
+
+ private:
+ angle::Result bufferDataImpl(Context *context,
+ BufferBinding target,
+ const void *data,
+ GLsizeiptr size,
+ BufferUsage usage,
+ GLbitfield flags);
+ angle::Result bufferExternalDataImpl(Context *context,
+ BufferBinding target,
+ GLeglClientBufferEXT clientBuffer,
+ GLsizeiptr size,
+ GLbitfield flags);
+
+ void onContentsChange();
+ size_t getContentsObserverIndex(VertexArray *vertexArray, uint32_t bufferIndex) const;
+
+ BufferState mState;
+ rx::BufferImpl *mImpl;
+ angle::ObserverBinding mImplObserver;
+
+ angle::FastVector<ContentsObserver, angle::kMaxFixedObservers> mContentsObservers;
+ mutable IndexRangeCache mIndexRangeCache;
+};
+
+} // namespace gl
+
+#endif // LIBANGLE_BUFFER_H_