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Diffstat (limited to 'gfx/angle/checkout/src/libANGLE/VertexArray.h')
| -rw-r--r-- | gfx/angle/checkout/src/libANGLE/VertexArray.h | 383 |
1 files changed, 383 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/libANGLE/VertexArray.h b/gfx/angle/checkout/src/libANGLE/VertexArray.h new file mode 100644 index 0000000000..cd8f4a58c9 --- /dev/null +++ b/gfx/angle/checkout/src/libANGLE/VertexArray.h @@ -0,0 +1,383 @@ +// +// Copyright (c) 2013 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. +// +// This class contains prototypes for representing GLES 3 Vertex Array Objects: +// +// The buffer objects that are to be used by the vertex stage of the GL are collected +// together to form a vertex array object. All state related to the definition of data used +// by the vertex processor is encapsulated in a vertex array object. +// + +#ifndef LIBANGLE_VERTEXARRAY_H_ +#define LIBANGLE_VERTEXARRAY_H_ + +#include "common/Optional.h" +#include "libANGLE/Constants.h" +#include "libANGLE/Debug.h" +#include "libANGLE/Observer.h" +#include "libANGLE/RefCountObject.h" +#include "libANGLE/VertexAttribute.h" + +#include <vector> + +namespace rx +{ +class GLImplFactory; +class VertexArrayImpl; +} // namespace rx + +namespace gl +{ +class Buffer; + +class VertexArrayState final : angle::NonCopyable +{ + public: + VertexArrayState(VertexArray *vertexArray, size_t maxAttribs, size_t maxBindings); + ~VertexArrayState(); + + const std::string &getLabel() const { return mLabel; } + + Buffer *getElementArrayBuffer() const { return mElementArrayBuffer.get(); } + size_t getMaxAttribs() const { return mVertexAttributes.size(); } + size_t getMaxBindings() const { return mVertexBindings.size(); } + const AttributesMask &getEnabledAttributesMask() const { return mEnabledAttributesMask; } + const std::vector<VertexAttribute> &getVertexAttributes() const { return mVertexAttributes; } + const VertexAttribute &getVertexAttribute(size_t attribIndex) const + { + return mVertexAttributes[attribIndex]; + } + const std::vector<VertexBinding> &getVertexBindings() const { return mVertexBindings; } + const VertexBinding &getVertexBinding(size_t bindingIndex) const + { + return mVertexBindings[bindingIndex]; + } + const VertexBinding &getBindingFromAttribIndex(size_t attribIndex) const + { + return mVertexBindings[mVertexAttributes[attribIndex].bindingIndex]; + } + size_t getBindingIndexFromAttribIndex(size_t attribIndex) const + { + return mVertexAttributes[attribIndex].bindingIndex; + } + + void setAttribBinding(const Context *context, size_t attribIndex, GLuint newBindingIndex); + + // Extra validation performed on the Vertex Array. + bool hasEnabledNullPointerClientArray() const; + + // Get all the attributes in an AttributesMask that are using the given binding. + AttributesMask getBindingToAttributesMask(GLuint bindingIndex) const; + + private: + friend class VertexArray; + std::string mLabel; + std::vector<VertexAttribute> mVertexAttributes; + SubjectBindingPointer<Buffer> mElementArrayBuffer; + std::vector<VertexBinding> mVertexBindings; + AttributesMask mEnabledAttributesMask; + ComponentTypeMask mVertexAttributesTypeMask; + + // This is a performance optimization for buffer binding. Allows element array buffer updates. + friend class State; + + // From the GLES 3.1 spec: + // When a generic attribute array is sourced from client memory, the vertex attribute binding + // state is ignored. Thus we don't have to worry about binding state when using client memory + // attribs. + gl::AttributesMask mClientMemoryAttribsMask; + gl::AttributesMask mNullPointerClientMemoryAttribsMask; + + // Used for validation cache. Indexed by attribute. + AttributesMask mCachedMappedArrayBuffers; + AttributesMask mCachedEnabledMappedArrayBuffers; +}; + +class VertexArray final : public angle::ObserverInterface, + public LabeledObject, + public angle::Subject +{ + public: + // Dirty bits for VertexArrays use a heirarchical design. At the top level, each attribute + // has a single dirty bit. Then an array of MAX_ATTRIBS dirty bits each has a dirty bit for + // enabled/pointer/format/binding. Bindings are handled similarly. Note that because the + // total number of dirty bits is 33, it will not be as fast on a 32-bit machine, which + // can't support the advanced 64-bit scanning intrinsics. We could consider packing the + // binding and attribute bits together if this becomes a problem. + // + // Special note on "DIRTY_ATTRIB_POINTER_BUFFER": this is a special case when the app + // calls glVertexAttribPointer but only changes a VBO and/or offset binding. This allows + // the Vulkan back-end to skip performing a pipeline change for performance. + enum DirtyBitType + { + DIRTY_BIT_ELEMENT_ARRAY_BUFFER, + DIRTY_BIT_ELEMENT_ARRAY_BUFFER_DATA, + + // Dirty bits for attributes. + DIRTY_BIT_ATTRIB_0, + DIRTY_BIT_ATTRIB_MAX = DIRTY_BIT_ATTRIB_0 + gl::MAX_VERTEX_ATTRIBS, + + // Dirty bits for bindings. + DIRTY_BIT_BINDING_0 = DIRTY_BIT_ATTRIB_MAX, + DIRTY_BIT_BINDING_MAX = DIRTY_BIT_BINDING_0 + gl::MAX_VERTEX_ATTRIB_BINDINGS, + + // We keep separate dirty bits for bound buffers whose data changed since last update. + DIRTY_BIT_BUFFER_DATA_0 = DIRTY_BIT_BINDING_MAX, + DIRTY_BIT_BUFFER_DATA_MAX = DIRTY_BIT_BUFFER_DATA_0 + gl::MAX_VERTEX_ATTRIB_BINDINGS, + + DIRTY_BIT_UNKNOWN = DIRTY_BIT_BUFFER_DATA_MAX, + DIRTY_BIT_MAX = DIRTY_BIT_UNKNOWN, + }; + + // We want to keep the number of dirty bits within 64 to keep iteration times fast. + static_assert(DIRTY_BIT_MAX <= 64, "Too many vertex array dirty bits."); + + enum DirtyAttribBitType + { + DIRTY_ATTRIB_ENABLED, + DIRTY_ATTRIB_POINTER, + DIRTY_ATTRIB_FORMAT, + DIRTY_ATTRIB_BINDING, + DIRTY_ATTRIB_POINTER_BUFFER, + DIRTY_ATTRIB_UNKNOWN, + DIRTY_ATTRIB_MAX = DIRTY_ATTRIB_UNKNOWN, + }; + + enum DirtyBindingBitType + { + DIRTY_BINDING_BUFFER, + DIRTY_BINDING_DIVISOR, + DIRTY_BINDING_UNKNOWN, + DIRTY_BINDING_MAX = DIRTY_BINDING_UNKNOWN, + }; + + using DirtyBits = angle::BitSet<DIRTY_BIT_MAX>; + using DirtyAttribBits = angle::BitSet<DIRTY_ATTRIB_MAX>; + using DirtyBindingBits = angle::BitSet<DIRTY_BINDING_MAX>; + using DirtyAttribBitsArray = std::array<DirtyAttribBits, gl::MAX_VERTEX_ATTRIBS>; + using DirtyBindingBitsArray = std::array<DirtyBindingBits, gl::MAX_VERTEX_ATTRIB_BINDINGS>; + + VertexArray(rx::GLImplFactory *factory, GLuint id, size_t maxAttribs, size_t maxAttribBindings); + + void onDestroy(const Context *context); + + GLuint id() const { return mId; } + + void setLabel(const Context *context, const std::string &label) override; + const std::string &getLabel() const override; + + const VertexBinding &getVertexBinding(size_t bindingIndex) const; + const VertexAttribute &getVertexAttribute(size_t attribIndex) const; + const VertexBinding &getBindingFromAttribIndex(size_t attribIndex) const + { + return mState.getBindingFromAttribIndex(attribIndex); + } + + // Returns true if the function finds and detaches a bound buffer. + bool detachBuffer(const Context *context, GLuint bufferName); + + void setVertexAttribDivisor(const Context *context, size_t index, GLuint divisor); + void enableAttribute(size_t attribIndex, bool enabledState); + + void setVertexAttribPointer(const Context *context, + size_t attribIndex, + Buffer *boundBuffer, + GLint size, + VertexAttribType type, + bool normalized, + GLsizei stride, + const void *pointer); + + void setVertexAttribIPointer(const Context *context, + size_t attribIndex, + Buffer *boundBuffer, + GLint size, + VertexAttribType type, + GLsizei stride, + const void *pointer); + + void setVertexAttribFormat(size_t attribIndex, + GLint size, + VertexAttribType type, + bool normalized, + bool pureInteger, + GLuint relativeOffset); + void bindVertexBuffer(const Context *context, + size_t bindingIndex, + Buffer *boundBuffer, + GLintptr offset, + GLsizei stride); + void setVertexAttribBinding(const Context *context, size_t attribIndex, GLuint bindingIndex); + void setVertexBindingDivisor(size_t bindingIndex, GLuint divisor); + + Buffer *getElementArrayBuffer() const { return mState.getElementArrayBuffer(); } + size_t getMaxAttribs() const { return mState.getMaxAttribs(); } + size_t getMaxBindings() const { return mState.getMaxBindings(); } + + const std::vector<VertexAttribute> &getVertexAttributes() const + { + return mState.getVertexAttributes(); + } + const std::vector<VertexBinding> &getVertexBindings() const + { + return mState.getVertexBindings(); + } + + rx::VertexArrayImpl *getImplementation() const { return mVertexArray; } + + const AttributesMask &getEnabledAttributesMask() const + { + return mState.getEnabledAttributesMask(); + } + + gl::AttributesMask getClientAttribsMask() const { return mState.mClientMemoryAttribsMask; } + + bool hasEnabledNullPointerClientArray() const + { + return mState.hasEnabledNullPointerClientArray(); + } + + bool hasMappedEnabledArrayBuffer() const + { + return mState.mCachedEnabledMappedArrayBuffers.any(); + } + + // Observer implementation + void onSubjectStateChange(angle::SubjectIndex index, angle::SubjectMessage message) override; + + static size_t GetVertexIndexFromDirtyBit(size_t dirtyBit); + + angle::Result syncState(const Context *context); + bool hasAnyDirtyBit() const { return mDirtyBits.any(); } + + ComponentTypeMask getAttributesTypeMask() const { return mState.mVertexAttributesTypeMask; } + AttributesMask getAttributesMask() const { return mState.mEnabledAttributesMask; } + + void onBindingChanged(const Context *context, int incr); + bool hasTransformFeedbackBindingConflict(const gl::Context *context) const; + + ANGLE_INLINE angle::Result getIndexRange(const Context *context, + DrawElementsType type, + GLsizei indexCount, + const void *indices, + IndexRange *indexRangeOut) const + { + Buffer *elementArrayBuffer = mState.mElementArrayBuffer.get(); + if (elementArrayBuffer && mIndexRangeCache.get(type, indexCount, indices, indexRangeOut)) + { + return angle::Result::Continue; + } + + return getIndexRangeImpl(context, type, indexCount, indices, indexRangeOut); + } + + void setBufferAccessValidationEnabled(bool enabled) + { + mBufferAccessValidationEnabled = enabled; + } + + private: + ~VertexArray() override; + + // This is a performance optimization for buffer binding. Allows element array buffer updates. + friend class State; + + void setDirtyAttribBit(size_t attribIndex, DirtyAttribBitType dirtyAttribBit); + void setDirtyBindingBit(size_t bindingIndex, DirtyBindingBitType dirtyBindingBit); + + DirtyBitType getDirtyBitFromIndex(bool contentsChanged, angle::SubjectIndex index) const; + void setDependentDirtyBit(bool contentsChanged, angle::SubjectIndex index); + + // These are used to optimize draw call validation. + void updateCachedBufferBindingSize(VertexBinding *binding); + void updateCachedTransformFeedbackBindingValidation(size_t bindingIndex, const Buffer *buffer); + void updateCachedMappedArrayBuffers(bool isMapped, const AttributesMask &boundAttributesMask); + void updateCachedMappedArrayBuffersBinding(const VertexBinding &binding); + + angle::Result getIndexRangeImpl(const Context *context, + DrawElementsType type, + GLsizei indexCount, + const void *indices, + IndexRange *indexRangeOut) const; + + void setVertexAttribPointerImpl(const Context *context, + ComponentType componentType, + bool pureInteger, + size_t attribIndex, + Buffer *boundBuffer, + GLint size, + VertexAttribType type, + bool normalized, + GLsizei stride, + const void *pointer); + + // These two functions return true if the state was dirty. + bool setVertexAttribFormatImpl(VertexAttribute *attrib, + GLint size, + VertexAttribType type, + bool normalized, + bool pureInteger, + GLuint relativeOffset); + bool bindVertexBufferImpl(const Context *context, + size_t bindingIndex, + Buffer *boundBuffer, + GLintptr offset, + GLsizei stride); + + GLuint mId; + + VertexArrayState mState; + DirtyBits mDirtyBits; + DirtyAttribBitsArray mDirtyAttribBits; + DirtyBindingBitsArray mDirtyBindingBits; + Optional<DirtyBits> mDirtyBitsGuard; + + rx::VertexArrayImpl *mVertexArray; + + std::vector<angle::ObserverBinding> mArrayBufferObserverBindings; + + AttributesMask mCachedTransformFeedbackConflictedBindingsMask; + + class IndexRangeCache final : angle::NonCopyable + { + public: + IndexRangeCache(); + + void invalidate() { mTypeKey = DrawElementsType::InvalidEnum; } + + bool get(DrawElementsType type, + GLsizei indexCount, + const void *indices, + IndexRange *indexRangeOut) + { + size_t offset = reinterpret_cast<uintptr_t>(indices); + if (mTypeKey == type && mIndexCountKey == indexCount && mOffsetKey == offset) + { + *indexRangeOut = mPayload; + return true; + } + + return false; + } + + void put(DrawElementsType type, + GLsizei indexCount, + size_t offset, + const IndexRange &indexRange); + + private: + DrawElementsType mTypeKey; + GLsizei mIndexCountKey; + size_t mOffsetKey; + IndexRange mPayload; + }; + + mutable IndexRangeCache mIndexRangeCache; + bool mBufferAccessValidationEnabled; +}; + +} // namespace gl + +#endif // LIBANGLE_VERTEXARRAY_H_ |