зеркало из https://github.com/mozilla/gecko-dev.git
127 строки
3.6 KiB
C++
127 строки
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef WEBGL_BUFFER_H_
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#define WEBGL_BUFFER_H_
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#include <map>
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#include "CacheInvalidator.h"
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#include "GLDefs.h"
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#include "mozilla/LinkedList.h"
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#include "nsWrapperCache.h"
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#include "WebGLObjectModel.h"
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#include "WebGLTypes.h"
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namespace mozilla {
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class WebGLBuffer final : public nsWrapperCache,
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public WebGLRefCountedObject<WebGLBuffer>,
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public LinkedListElement<WebGLBuffer> {
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friend class WebGLContext;
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friend class WebGL2Context;
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friend class WebGLTexture;
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public:
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enum class Kind { Undefined, ElementArray, OtherData };
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WebGLBuffer(WebGLContext* webgl, GLuint buf);
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void SetContentAfterBind(GLenum target);
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Kind Content() const { return mContent; }
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void Delete();
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size_t SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf) const;
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GLenum Usage() const { return mUsage; }
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size_t ByteLength() const { return mByteLength; }
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Maybe<uint32_t> GetIndexedFetchMaxVert(GLenum type, uint64_t byteOffset,
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uint32_t indexCount) const;
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bool ValidateRange(size_t byteOffset, size_t byteLen) const;
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WebGLContext* GetParentObject() const { return mContext; }
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virtual JSObject* WrapObject(JSContext* cx,
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JS::Handle<JSObject*> givenProto) override;
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bool ValidateCanBindToTarget(GLenum target);
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void BufferData(GLenum target, size_t size, const void* data, GLenum usage);
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void BufferSubData(GLenum target, size_t dstByteOffset, size_t dataLen,
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const void* data) const;
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////
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static void AddBindCount(GLenum target, WebGLBuffer* buffer, int8_t addVal) {
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if (!buffer) return;
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if (target == LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER) {
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MOZ_ASSERT_IF(addVal < 0, buffer->mTFBindCount >= size_t(-addVal));
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buffer->mTFBindCount += addVal;
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buffer->mFetchInvalidator.InvalidateCaches();
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} else {
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MOZ_ASSERT_IF(addVal < 0, buffer->mNonTFBindCount >= size_t(-addVal));
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buffer->mNonTFBindCount += addVal;
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}
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}
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static void SetSlot(GLenum target, WebGLBuffer* newBuffer,
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WebGLRefPtr<WebGLBuffer>* const out_slot) {
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WebGLBuffer* const oldBuffer = *out_slot;
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AddBindCount(target, oldBuffer, -1);
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AddBindCount(target, newBuffer, +1);
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*out_slot = newBuffer;
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}
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bool IsBoundForTF() const { return bool(mTFBindCount); }
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bool IsBoundForNonTF() const { return bool(mNonTFBindCount); }
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////
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const GLenum mGLName;
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NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(WebGLBuffer)
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(WebGLBuffer)
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protected:
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~WebGLBuffer();
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void InvalidateCacheRange(uint64_t byteOffset, uint64_t byteLength) const;
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Kind mContent;
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GLenum mUsage;
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size_t mByteLength;
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size_t mTFBindCount;
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size_t mNonTFBindCount;
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mutable uint64_t mLastUpdateFenceId = 0;
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struct IndexRange final {
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GLenum type;
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uint64_t byteOffset;
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uint32_t indexCount;
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bool operator<(const IndexRange& x) const {
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if (type != x.type) return type < x.type;
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if (byteOffset != x.byteOffset) return byteOffset < x.byteOffset;
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return indexCount < x.indexCount;
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}
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};
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UniqueBuffer mIndexCache;
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mutable std::map<IndexRange, Maybe<uint32_t>> mIndexRanges;
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public:
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CacheInvalidator mFetchInvalidator;
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void ResetLastUpdateFenceId() const;
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};
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} // namespace mozilla
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#endif // WEBGL_BUFFER_H_
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