зеркало из https://github.com/mozilla/gecko-dev.git
355 строки
12 KiB
C++
355 строки
12 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_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/Casting.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 "CacheInvalidator.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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class WebGLFramebuffer;
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class WebGLSampler;
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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 DoesTargetMatchDimensions(WebGLContext* webgl, TexImageTarget target,
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uint8_t dims);
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namespace webgl {
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struct SamplingState final {
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// Only store that which changes validation.
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TexMinFilter minFilter = LOCAL_GL_NEAREST_MIPMAP_LINEAR;
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TexMagFilter magFilter = LOCAL_GL_LINEAR;
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TexWrap wrapS = LOCAL_GL_REPEAT;
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TexWrap wrapT = LOCAL_GL_REPEAT;
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// TexWrap wrapR = LOCAL_GL_REPEAT;
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// GLfloat minLod = -1000;
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// GLfloat maxLod = 1000;
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TexCompareMode compareMode = LOCAL_GL_NONE;
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// TexCompareFunc compareFunc = LOCAL_GL_LEQUAL;
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};
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struct ImageInfo final {
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static const ImageInfo kUndefined;
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const webgl::FormatUsageInfo* mFormat = nullptr;
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uint32_t mWidth = 0;
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uint32_t mHeight = 0;
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uint32_t mDepth = 0;
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mutable bool mHasData = false;
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uint8_t mSamples = 0;
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// -
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size_t MemoryUsage() const;
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bool IsDefined() const {
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if (!mFormat) {
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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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Maybe<ImageInfo> NextMip(GLenum target) const;
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};
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} // namespace webgl
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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 : public nsWrapperCache,
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public WebGLRefCountedObject<WebGLTexture>,
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public LinkedListElement<WebGLTexture>,
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public CacheInvalidator {
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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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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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webgl::SamplingState mSamplingState;
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mutable const GLint* mCurSwizzle =
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nullptr; // nullptr means 'default swizzle'.
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// -
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struct CompletenessInfo final {
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uint8_t levels = 0;
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bool powerOfTwo = false;
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bool mipmapComplete = false;
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const webgl::FormatUsageInfo* usage = nullptr;
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const char* incompleteReason = nullptr;
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};
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mutable CacheWeakMap<const WebGLSampler*, webgl::SampleableInfo>
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mSamplingCache;
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public:
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Maybe<const CompletenessInfo> CalcCompletenessInfo(
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bool ensureInit, bool skipMips = false) const;
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Maybe<const webgl::SampleableInfo> CalcSampleableInfo(
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const WebGLSampler*) const;
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const webgl::SampleableInfo* GetSampleableInfo(const WebGLSampler*) const;
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// -
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const auto& Immutable() const { return mImmutable; }
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const auto& BaseMipmapLevel() const { return mBaseMipmapLevel; }
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const auto& FaceCount() const { return mFaceCount; }
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// We can just max this out to 31, which is the number of unsigned bits in
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// GLsizei.
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static const uint8_t kMaxLevelCount = 31;
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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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webgl::ImageInfo mImageInfoArr[kMaxLevelCount * kMaxFaceCount];
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////////////////////////////////////
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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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TexTarget Target() const { return mTarget; }
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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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protected:
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~WebGLTexture() { DeleteOnce(); }
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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();
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JS::Value GetTexParameter(TexTarget texTarget, GLenum pname);
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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, TexImageTarget target, GLint level,
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GLenum internalFormat, GLint xOffset, GLint yOffset,
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GLint zOffset, const webgl::PackingInfo& pi,
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const webgl::TexUnpackBlob* blob);
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bool ValidateTexImageSpecification(TexImageTarget target, GLint level,
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uint32_t width, uint32_t height,
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uint32_t depth,
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webgl::ImageInfo** const out_imageInfo);
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bool ValidateTexImageSelection(TexImageTarget target, GLint level,
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GLint xOffset, GLint yOffset, GLint zOffset,
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uint32_t width, uint32_t height,
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uint32_t depth,
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webgl::ImageInfo** const out_imageInfo);
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bool ValidateUnpack(const webgl::TexUnpackBlob* blob, bool isFunc3D,
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const webgl::PackingInfo& srcPI) const;
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public:
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void TexStorage(TexTarget target, GLsizei levels, GLenum sizedFormat,
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GLsizei width, GLsizei height, GLsizei depth);
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void TexImage(TexImageTarget target, GLint level, GLenum internalFormat,
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GLsizei width, GLsizei height, GLsizei depth, GLint border,
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const webgl::PackingInfo& pi, const TexImageSource& src);
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void TexSubImage(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,
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const TexImageSource& src);
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protected:
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void TexImage(TexImageTarget target, GLint level, GLenum internalFormat,
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const webgl::PackingInfo& pi, const webgl::TexUnpackBlob* blob);
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void TexSubImage(TexImageTarget target, GLint level, GLint xOffset,
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GLint yOffset, GLint zOffset, const webgl::PackingInfo& pi,
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const webgl::TexUnpackBlob* blob);
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public:
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void CompressedTexImage(TexImageTarget target, GLint level,
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GLenum internalFormat, GLsizei width, GLsizei height,
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GLsizei depth, GLint border,
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const TexImageSource& src,
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const Maybe<GLsizei>& expectedImageSize);
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void CompressedTexSubImage(TexImageTarget target, GLint level, GLint xOffset,
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GLint yOffset, GLint zOffset, GLsizei width,
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GLsizei height, GLsizei depth,
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GLenum sizedUnpackFormat,
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const TexImageSource& src,
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const Maybe<GLsizei>& expectedImageSize);
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void CopyTexImage2D(TexImageTarget target, GLint level, GLenum internalFormat,
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GLint x, GLint y, GLsizei width, GLsizei height,
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GLint border);
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void CopyTexSubImage(TexImageTarget target, GLint level, GLint xOffset,
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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 RefreshSwizzle() const;
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public:
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uint32_t EffectiveMaxLevel() const; // GLES 3.0.5 p158: `q`
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protected:
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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 AutoAssertCast(rawTexImageTarget -
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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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public:
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auto& 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 auto& 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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auto& ImageInfoAt(TexImageTarget texImageTarget, GLint level) {
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const auto& face = FaceForTarget(texImageTarget);
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return ImageInfoAtFace(face, level);
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}
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const auto& 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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const auto& BaseImageInfo() const {
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if (mBaseMipmapLevel >= kMaxLevelCount) return webgl::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 EnsureImageDataInitialized(TexImageTarget target, uint32_t level);
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void PopulateMipChain(uint32_t maxLevel);
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bool IsMipAndCubeComplete(uint32_t maxLevel, bool ensureInit,
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bool* out_initFailed) const;
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void Truncate();
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bool IsCubeMap() const { return (mTarget == LOCAL_GL_TEXTURE_CUBE_MAP); }
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};
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inline TexImageTarget TexImageTargetForTargetAndFace(TexTarget target,
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uint8_t face) {
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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> ImageFromVideo(
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dom::HTMLVideoElement* elem);
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bool IsTarget3D(TexImageTarget target);
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GLenum DoTexImage(gl::GLContext* gl, TexImageTarget target, GLint level,
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const webgl::DriverUnpackInfo* dui, GLsizei width,
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GLsizei height, GLsizei depth, const void* data);
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GLenum DoTexSubImage(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,
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const webgl::PackingInfo& pi, const void* data);
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GLenum DoCompressedTexSubImage(gl::GLContext* gl, TexImageTarget target,
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GLint level, GLint xOffset, GLint yOffset,
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GLint zOffset, GLsizei width, GLsizei height,
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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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