зеркало из https://github.com/mozilla/gecko-dev.git
446 строки
16 KiB
C++
446 строки
16 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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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_TEXTURE_H_
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#define WEBGL_TEXTURE_H_
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#include <algorithm>
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#include <map>
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#include <set>
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#include <vector>
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#include "mozilla/Assertions.h"
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#include "mozilla/CheckedInt.h"
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#include "mozilla/dom/TypedArray.h"
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#include "mozilla/LinkedList.h"
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#include "nsWrapperCache.h"
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#include "WebGLFramebufferAttachable.h"
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#include "WebGLObjectModel.h"
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#include "WebGLStrongTypes.h"
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#include "WebGLTypes.h"
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namespace mozilla {
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class ErrorResult;
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class WebGLContext;
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struct FloatOrInt;
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struct TexImageSource;
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namespace dom {
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class Element;
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class HTMLVideoElement;
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class ImageData;
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class ArrayBufferViewOrSharedArrayBufferView;
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} // namespace dom
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namespace layers {
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class Image;
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} // namespace layers
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namespace webgl {
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struct DriverUnpackInfo;
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struct FormatUsageInfo;
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struct PackingInfo;
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class TexUnpackBlob;
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} // namespace webgl
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bool
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DoesTargetMatchDimensions(WebGLContext* webgl, TexImageTarget target, uint8_t dims,
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const char* funcName);
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// NOTE: When this class is switched to new DOM bindings, update the (then-slow)
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// WrapObject calls in GetParameter and GetFramebufferAttachmentParameter.
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class WebGLTexture final
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: public nsWrapperCache
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, public WebGLRefCountedObject<WebGLTexture>
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, public LinkedListElement<WebGLTexture>
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{
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// Friends
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friend class WebGLContext;
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friend class WebGLFramebuffer;
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////////////////////////////////////
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// Members
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public:
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const GLuint mGLName;
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protected:
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TexTarget mTarget;
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static const uint8_t kMaxFaceCount = 6;
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uint8_t mFaceCount; // 6 for cube maps, 1 otherwise.
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TexMinFilter mMinFilter;
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TexMagFilter mMagFilter;
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TexWrap mWrapS, mWrapT;
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bool mImmutable; // Set by texStorage*
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uint8_t mImmutableLevelCount;
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uint32_t mBaseMipmapLevel; // Set by texParameter (defaults to 0)
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uint32_t mMaxMipmapLevel; // Set by texParameter (defaults to 1000)
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// You almost certainly don't want to query mMaxMipmapLevel.
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// You almost certainly want MaxEffectiveMipmapLevel().
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GLenum mTexCompareMode;
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// Resolvable optimizations:
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bool mIsResolved;
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FakeBlackType mResolved_FakeBlack;
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const GLint* mResolved_Swizzle; // nullptr means 'default swizzle'.
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public:
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class ImageInfo;
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// numLevels = log2(size) + 1
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// numLevels(16k) = log2(16k) + 1 = 14 + 1 = 15
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// numLevels(1M) = log2(1M) + 1 = 19.9 + 1 ~= 21
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// Or we can just max this out to 31, which is the number of unsigned bits in GLsizei.
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static const uint8_t kMaxLevelCount = 31;
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// And in turn, it needs these forwards:
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protected:
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// We need to forward these.
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void SetImageInfo(const char* funcName, ImageInfo* target, const ImageInfo& newInfo);
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void SetImageInfosAtLevel(const char* funcName, uint32_t level,
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const ImageInfo& newInfo);
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public:
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// We store information about the various images that are part of this
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// texture. (cubemap faces, mipmap levels)
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class ImageInfo
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{
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friend void WebGLTexture::SetImageInfo(const char* funcName, ImageInfo* target,
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const ImageInfo& newInfo);
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friend void WebGLTexture::SetImageInfosAtLevel(const char* funcName,
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uint32_t level,
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const ImageInfo& newInfo);
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public:
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static const ImageInfo kUndefined;
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// This is the "effective internal format" of the texture, an official
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// OpenGL spec concept, see OpenGL ES 3.0.3 spec, section 3.8.3, page
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// 126 and below.
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const webgl::FormatUsageInfo* const mFormat;
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const uint32_t mWidth;
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const uint32_t mHeight;
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const uint32_t mDepth;
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protected:
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bool mIsDataInitialized;
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std::set<WebGLFBAttachPoint*> mAttachPoints;
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public:
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ImageInfo()
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: mFormat(LOCAL_GL_NONE)
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, mWidth(0)
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, mHeight(0)
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, mDepth(0)
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, mIsDataInitialized(false)
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{ }
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ImageInfo(const webgl::FormatUsageInfo* format, uint32_t width, uint32_t height,
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uint32_t depth, bool isDataInitialized)
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: mFormat(format)
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, mWidth(width)
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, mHeight(height)
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, mDepth(depth)
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, mIsDataInitialized(isDataInitialized)
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{
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MOZ_ASSERT(mFormat);
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}
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void Clear(const char* funcName);
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~ImageInfo() {
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MOZ_ASSERT(!mAttachPoints.size());
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}
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protected:
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void Set(const char* funcName, const ImageInfo& a);
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public:
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uint32_t PossibleMipmapLevels() const {
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// GLES 3.0.4, 3.8 - Mipmapping: `floor(log2(largest_of_dims)) + 1`
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const uint32_t largest = std::max(std::max(mWidth, mHeight), mDepth);
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MOZ_ASSERT(largest != 0);
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return FloorLog2Size(largest) + 1;
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}
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bool IsPowerOfTwo() const;
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void AddAttachPoint(WebGLFBAttachPoint* attachPoint);
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void RemoveAttachPoint(WebGLFBAttachPoint* attachPoint);
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void OnRespecify(const char* funcName) const;
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size_t MemoryUsage() const;
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bool IsDefined() const {
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if (mFormat == LOCAL_GL_NONE) {
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MOZ_ASSERT(!mWidth && !mHeight && !mDepth);
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return false;
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}
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return true;
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}
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bool IsDataInitialized() const { return mIsDataInitialized; }
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void SetIsDataInitialized(bool isDataInitialized, WebGLTexture* tex);
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};
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ImageInfo mImageInfoArr[kMaxLevelCount * kMaxFaceCount];
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////////////////////////////////////
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public:
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NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(WebGLTexture)
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(WebGLTexture)
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WebGLTexture(WebGLContext* webgl, GLuint tex);
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void Delete();
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bool HasEverBeenBound() const { return mTarget != LOCAL_GL_NONE; }
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TexTarget Target() const { return mTarget; }
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WebGLContext* GetParentObject() const {
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return mContext;
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}
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virtual JSObject* WrapObject(JSContext* cx, JS::Handle<JSObject*> givenProto) override;
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protected:
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~WebGLTexture() {
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DeleteOnce();
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}
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public:
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////////////////////////////////////
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// GL calls
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bool BindTexture(TexTarget texTarget);
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void GenerateMipmap(TexTarget texTarget);
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JS::Value GetTexParameter(TexTarget texTarget, GLenum pname);
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bool IsTexture() const;
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void TexParameter(TexTarget texTarget, GLenum pname, const FloatOrInt& param);
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////////////////////////////////////
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// WebGLTextureUpload.cpp
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protected:
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void TexOrSubImageBlob(bool isSubImage, const char* funcName, TexImageTarget target,
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GLint level, GLenum internalFormat, GLint xOffset,
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GLint yOffset, GLint zOffset,
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const webgl::PackingInfo& pi,
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const webgl::TexUnpackBlob* blob);
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bool ValidateTexImageSpecification(const char* funcName, TexImageTarget target,
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GLint level, uint32_t width, uint32_t height,
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uint32_t depth,
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WebGLTexture::ImageInfo** const out_imageInfo);
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bool ValidateTexImageSelection(const char* funcName, TexImageTarget target,
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GLint level, GLint xOffset, GLint yOffset,
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GLint zOffset, uint32_t width, uint32_t height,
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uint32_t depth,
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WebGLTexture::ImageInfo** const out_imageInfo);
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bool ValidateCopyTexImageForFeedback(const char* funcName, uint32_t level, GLint layer = 0) const;
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bool ValidateUnpack(const char* funcName, const webgl::TexUnpackBlob* blob,
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bool isFunc3D, const webgl::PackingInfo& srcPI) const;
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public:
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void TexStorage(const char* funcName, TexTarget target, GLsizei levels,
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GLenum sizedFormat, GLsizei width, GLsizei height, GLsizei depth);
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void TexImage(const char* funcName, TexImageTarget target, GLint level,
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GLenum internalFormat, GLsizei width, GLsizei height, GLsizei depth,
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GLint border, const webgl::PackingInfo& pi, const TexImageSource& src);
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void TexSubImage(const char* funcName, TexImageTarget target, GLint level,
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GLint xOffset, GLint yOffset, GLint zOffset, GLsizei width,
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GLsizei height, GLsizei depth, const webgl::PackingInfo& pi,
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const TexImageSource& src);
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protected:
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void TexImage(const char* funcName, TexImageTarget target, GLint level,
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GLenum internalFormat, const webgl::PackingInfo& pi,
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const webgl::TexUnpackBlob* blob);
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void TexSubImage(const char* funcName, TexImageTarget target, GLint level,
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GLint xOffset, GLint yOffset, GLint zOffset,
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const webgl::PackingInfo& pi, const webgl::TexUnpackBlob* blob);
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public:
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void CompressedTexImage(const char* funcName, TexImageTarget target, GLint level,
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GLenum internalFormat, GLsizei width, GLsizei height,
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GLsizei depth, GLint border, const TexImageSource& src);
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void CompressedTexSubImage(const char* funcName, TexImageTarget target, GLint level,
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GLint xOffset, GLint yOffset, GLint zOffset, GLsizei width,
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GLsizei height, GLsizei depth, GLenum sizedUnpackFormat,
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const TexImageSource& src);
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void CopyTexImage2D(TexImageTarget target, GLint level, GLenum internalFormat,
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GLint x, GLint y, GLsizei width, GLsizei height, GLint border);
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void CopyTexSubImage(const char* funcName, TexImageTarget target, GLint level,
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GLint xOffset, GLint yOffset, GLint zOffset, GLint x, GLint y,
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GLsizei width, GLsizei height);
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////////////////////////////////////
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protected:
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void ClampLevelBaseAndMax();
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void PopulateMipChain(const char* funcName, uint32_t baseLevel, uint32_t maxLevel);
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bool MaxEffectiveMipmapLevel(uint32_t texUnit, uint32_t* const out) const;
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static uint8_t FaceForTarget(TexImageTarget texImageTarget) {
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GLenum rawTexImageTarget = texImageTarget.get();
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switch (rawTexImageTarget) {
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case LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_X:
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case LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
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case LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
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case LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
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case LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
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case LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
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return rawTexImageTarget - LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_X;
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default:
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return 0;
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}
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}
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ImageInfo& ImageInfoAtFace(uint8_t face, uint32_t level) {
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MOZ_ASSERT(face < mFaceCount);
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MOZ_ASSERT(level < kMaxLevelCount);
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size_t pos = (level * mFaceCount) + face;
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return mImageInfoArr[pos];
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}
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const ImageInfo& ImageInfoAtFace(uint8_t face, uint32_t level) const {
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return const_cast<WebGLTexture*>(this)->ImageInfoAtFace(face, level);
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}
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public:
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ImageInfo& ImageInfoAt(TexImageTarget texImageTarget, GLint level) {
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auto face = FaceForTarget(texImageTarget);
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return ImageInfoAtFace(face, level);
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}
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const ImageInfo& ImageInfoAt(TexImageTarget texImageTarget, GLint level) const {
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return const_cast<WebGLTexture*>(this)->ImageInfoAt(texImageTarget, level);
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}
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void SetImageInfoAt(const char* funcName, TexImageTarget texImageTarget, GLint level,
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const ImageInfo& val)
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{
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ImageInfo* target = &ImageInfoAt(texImageTarget, level);
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SetImageInfo(funcName, target, val);
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}
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const ImageInfo& BaseImageInfo() const {
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if (mBaseMipmapLevel >= kMaxLevelCount)
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return ImageInfo::kUndefined;
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return ImageInfoAtFace(0, mBaseMipmapLevel);
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}
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size_t MemoryUsage() const;
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bool InitializeImageData(const char* funcName, TexImageTarget target, uint32_t level);
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protected:
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bool EnsureImageDataInitialized(const char* funcName, TexImageTarget target,
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uint32_t level);
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bool EnsureLevelInitialized(const char* funcName, uint32_t level);
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bool CheckFloatTextureFilterParams() const {
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// Without OES_texture_float_linear, only NEAREST and
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// NEAREST_MIMPAMP_NEAREST are supported.
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return mMagFilter == LOCAL_GL_NEAREST &&
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(mMinFilter == LOCAL_GL_NEAREST ||
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mMinFilter == LOCAL_GL_NEAREST_MIPMAP_NEAREST);
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}
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bool AreBothWrapModesClampToEdge() const {
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return mWrapS == LOCAL_GL_CLAMP_TO_EDGE &&
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mWrapT == LOCAL_GL_CLAMP_TO_EDGE;
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}
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public:
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bool DoesMinFilterRequireMipmap() const {
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return !(mMinFilter == LOCAL_GL_NEAREST ||
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mMinFilter == LOCAL_GL_LINEAR);
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}
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void SetGeneratedMipmap();
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void SetCustomMipmap();
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bool AreAllLevel0ImageInfosEqual() const;
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bool IsMipmapComplete(const char* funcName, uint32_t texUnit,
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bool* const out_initFailed);
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bool IsCubeComplete() const;
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bool IsComplete(const char* funcName, uint32_t texUnit, const char** const out_reason,
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bool* const out_initFailed);
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bool IsMipmapCubeComplete() const;
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bool IsCubeMap() const { return (mTarget == LOCAL_GL_TEXTURE_CUBE_MAP); }
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// Resolve cache optimizations
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protected:
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bool GetFakeBlackType(const char* funcName, uint32_t texUnit,
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FakeBlackType* const out_fakeBlack);
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public:
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bool IsFeedback(WebGLContext* webgl, const char* funcName, uint32_t texUnit,
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const std::vector<const WebGLFBAttachPoint*>& fbAttachments) const;
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bool ResolveForDraw(const char* funcName, uint32_t texUnit,
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FakeBlackType* const out_fakeBlack);
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void InvalidateResolveCache() { mIsResolved = false; }
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};
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inline TexImageTarget
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TexImageTargetForTargetAndFace(TexTarget target, uint8_t face)
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{
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switch (target.get()) {
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case LOCAL_GL_TEXTURE_2D:
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case LOCAL_GL_TEXTURE_3D:
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MOZ_ASSERT(face == 0);
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return target.get();
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case LOCAL_GL_TEXTURE_CUBE_MAP:
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MOZ_ASSERT(face < 6);
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return LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_X + face;
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default:
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MOZ_CRASH("GFX: TexImageTargetForTargetAndFace");
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}
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}
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already_AddRefed<mozilla::layers::Image>
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ImageFromVideo(dom::HTMLVideoElement* elem);
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bool
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IsTarget3D(TexImageTarget target);
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GLenum
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DoTexImage(gl::GLContext* gl, TexImageTarget target, GLint level,
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const webgl::DriverUnpackInfo* dui, GLsizei width, GLsizei height,
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GLsizei depth, const void* data);
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GLenum
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DoTexSubImage(gl::GLContext* gl, TexImageTarget target, GLint level, GLint xOffset,
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GLint yOffset, GLint zOffset, GLsizei width, GLsizei height,
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GLsizei depth, const webgl::PackingInfo& pi, const void* data);
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GLenum
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DoCompressedTexSubImage(gl::GLContext* gl, TexImageTarget target, GLint level,
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GLint xOffset, GLint yOffset, GLint zOffset, GLsizei width,
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GLsizei height, GLsizei depth, GLenum sizedUnpackFormat,
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GLsizei dataSize, const void* data);
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} // namespace mozilla
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#endif // WEBGL_TEXTURE_H_
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