mozilla
/
gecko-dev
зеркало из https://github.com/mozilla/gecko-dev.git
1
0
Форкнуть 0
Код Задачи Пакеты Проекты Релизы Вики Активность
gecko-dev/dom/canvas/WebGLTexture.h

320 строки
9.9 KiB
C++
Исходник Ответственный История

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef WEBGL_TEXTURE_H_
#define WEBGL_TEXTURE_H_
#include <algorithm>
#include <map>
#include <set>
#include <vector>
#include "mozilla/Assertions.h"
#include "mozilla/Casting.h"
#include "mozilla/CheckedInt.h"
#include "mozilla/dom/TypedArray.h"
#include "CacheInvalidator.h"
#include "WebGLObjectModel.h"
#include "WebGLStrongTypes.h"
#include "WebGLTypes.h"
namespace mozilla {
class ErrorResult;
class WebGLContext;
class WebGLFramebuffer;
class WebGLSampler;
struct FloatOrInt;
struct TexImageSource;
namespace dom {
class Element;
class HTMLVideoElement;
class ImageData;
class ArrayBufferViewOrSharedArrayBufferView;
} // namespace dom
namespace layers {
class Image;
} // namespace layers
namespace webgl {
struct DriverUnpackInfo;
struct FormatUsageInfo;
struct PackingInfo;
class TexUnpackBlob;
} // namespace webgl
bool DoesTargetMatchDimensions(WebGLContext* webgl, TexImageTarget target,
uint8_t dims);
namespace webgl {
struct SamplingState final {
// Only store that which changes validation.
TexMinFilter minFilter = LOCAL_GL_NEAREST_MIPMAP_LINEAR;
TexMagFilter magFilter = LOCAL_GL_LINEAR;
TexWrap wrapS = LOCAL_GL_REPEAT;
TexWrap wrapT = LOCAL_GL_REPEAT;
// TexWrap wrapR = LOCAL_GL_REPEAT;
// GLfloat minLod = -1000;
// GLfloat maxLod = 1000;
TexCompareMode compareMode = LOCAL_GL_NONE;
// TexCompareFunc compareFunc = LOCAL_GL_LEQUAL;
};
struct ImageInfo final {
static const ImageInfo kUndefined;
const webgl::FormatUsageInfo* mFormat = nullptr;
uint32_t mWidth = 0;
uint32_t mHeight = 0;
uint32_t mDepth = 0;
mutable Maybe<std::vector<bool>> mUninitializedSlices;
uint8_t mSamples = 0;
// -
size_t MemoryUsage() const;
bool IsDefined() const {
if (!mFormat) {
MOZ_ASSERT(!mWidth && !mHeight && !mDepth);
return false;
}
return true;
}
Maybe<ImageInfo> NextMip(GLenum target) const;
};
} // namespace webgl
class WebGLTexture final : public WebGLContextBoundObject,
public CacheInvalidator {
// Friends
friend class WebGLContext;
friend class WebGLFramebuffer;
MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(WebGLTexture, override)
////////////////////////////////////
// Members
public:
const GLuint mGLName;
protected:
TexTarget mTarget;
static const uint8_t kMaxFaceCount = 6;
uint8_t mFaceCount; // 6 for cube maps, 1 otherwise.
bool mImmutable; // Set by texStorage*
uint8_t mImmutableLevelCount;
uint32_t mBaseMipmapLevel; // Set by texParameter (defaults to 0)
uint32_t mMaxMipmapLevel; // Set by texParameter (defaults to 1000)
// You almost certainly don't want to query mMaxMipmapLevel.
// You almost certainly want MaxEffectiveMipmapLevel().
webgl::SamplingState mSamplingState;
mutable const GLint* mCurSwizzle =
nullptr; // nullptr means 'default swizzle'.
// -
struct CompletenessInfo final {
uint8_t levels = 0;
bool powerOfTwo = false;
bool mipmapComplete = false;
const webgl::FormatUsageInfo* usage = nullptr;
const char* incompleteReason = nullptr;
};
mutable CacheWeakMap<const WebGLSampler*, webgl::SampleableInfo>
mSamplingCache;
public:
Maybe<const CompletenessInfo> CalcCompletenessInfo(
bool ensureInit, bool skipMips = false) const;
Maybe<const webgl::SampleableInfo> CalcSampleableInfo(
const WebGLSampler*) const;
const webgl::SampleableInfo* GetSampleableInfo(const WebGLSampler*) const;
// -
const auto& Immutable() const { return mImmutable; }
const auto& BaseMipmapLevel() const { return mBaseMipmapLevel; }
const auto& FaceCount() const { return mFaceCount; }
// We can just max this out to 31, which is the number of unsigned bits in
// GLsizei.
static const uint8_t kMaxLevelCount = 31;
// We store information about the various images that are part of this
// texture. (cubemap faces, mipmap levels)
webgl::ImageInfo mImageInfoArr[kMaxLevelCount * kMaxFaceCount];
////////////////////////////////////
WebGLTexture(WebGLContext* webgl, GLuint tex);
TexTarget Target() const { return mTarget; }
protected:
~WebGLTexture() override;
public:
////////////////////////////////////
// GL calls
bool BindTexture(TexTarget texTarget);
void GenerateMipmap();
Maybe<double> GetTexParameter(GLenum pname) const;
void TexParameter(TexTarget texTarget, GLenum pname, const FloatOrInt& param);
////////////////////////////////////
// WebGLTextureUpload.cpp
protected:
void TexOrSubImageBlob(bool isSubImage, TexImageTarget target, GLint level,
GLenum internalFormat, GLint xOffset, GLint yOffset,
GLint zOffset, const webgl::PackingInfo& pi,
const webgl::TexUnpackBlob* blob);
bool ValidateTexImageSpecification(TexImageTarget target, uint32_t level,
const uvec3& size,
webgl::ImageInfo** const out_imageInfo);
bool ValidateTexImageSelection(TexImageTarget target, uint32_t level,
const uvec3& offset, const uvec3& size,
webgl::ImageInfo** const out_imageInfo);
bool ValidateUnpack(const webgl::TexUnpackBlob* blob, bool isFunc3D,
const webgl::PackingInfo& srcPI) const;
public:
void TexStorage(TexTarget target, uint32_t levels, GLenum sizedFormat,
const uvec3& size);
// TexSubImage iff `!respecFormat`
void TexImage(uint32_t level, GLenum respecFormat, const uvec3& offset,
const webgl::PackingInfo& pi, const webgl::TexUnpackBlobDesc&);
// CompressedTexSubImage iff `sub`
void CompressedTexImage(bool sub, GLenum imageTarget, uint32_t level,
GLenum formatEnum, const uvec3& offset,
const uvec3& size, const Range<const uint8_t>& src,
const uint32_t pboImageSize,
const Maybe<uint64_t>& pboOffset);
// CopyTexSubImage iff `!respecFormat`
void CopyTexImage(GLenum imageTarget, uint32_t level, GLenum respecFormat,
const uvec3& dstOffset, const ivec2& srcOffset,
const uvec2& size2);
////////////////////////////////////
protected:
void ClampLevelBaseAndMax();
void RefreshSwizzle() const;
public:
uint32_t EffectiveMaxLevel() const; // GLES 3.0.5 p158: `q`
protected:
static uint8_t FaceForTarget(TexImageTarget texImageTarget) {
GLenum rawTexImageTarget = texImageTarget.get();
switch (rawTexImageTarget) {
case LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_X:
case LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
case LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
case LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
case LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
case LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
return AutoAssertCast(rawTexImageTarget -
LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_X);
default:
return 0;
}
}
public:
auto& ImageInfoAtFace(uint8_t face, uint32_t level) {
MOZ_ASSERT(face < mFaceCount);
MOZ_ASSERT(level < kMaxLevelCount);
size_t pos = (level * mFaceCount) + face;
return mImageInfoArr[pos];
}
const auto& ImageInfoAtFace(uint8_t face, uint32_t level) const {
return const_cast<WebGLTexture*>(this)->ImageInfoAtFace(face, level);
}
auto& ImageInfoAt(TexImageTarget texImageTarget, GLint level) {
const auto& face = FaceForTarget(texImageTarget);
return ImageInfoAtFace(face, level);
}
const auto& ImageInfoAt(TexImageTarget texImageTarget, GLint level) const {
return const_cast<WebGLTexture*>(this)->ImageInfoAt(texImageTarget, level);
}
const auto& BaseImageInfo() const {
if (mBaseMipmapLevel >= kMaxLevelCount) return webgl::ImageInfo::kUndefined;
return ImageInfoAtFace(0, mBaseMipmapLevel);
}
size_t MemoryUsage() const;
bool EnsureImageDataInitialized(TexImageTarget target, uint32_t level);
void PopulateMipChain(uint32_t maxLevel);
bool IsMipAndCubeComplete(uint32_t maxLevel, bool ensureInit,
bool* out_initFailed) const;
void Truncate();
bool IsCubeMap() const { return (mTarget == LOCAL_GL_TEXTURE_CUBE_MAP); }
};
inline TexImageTarget TexImageTargetForTargetAndFace(TexTarget target,
uint8_t face) {
switch (target.get()) {
case LOCAL_GL_TEXTURE_2D:
case LOCAL_GL_TEXTURE_3D:
MOZ_ASSERT(face == 0);
return target.get();
case LOCAL_GL_TEXTURE_CUBE_MAP:
MOZ_ASSERT(face < 6);
return LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_X + face;
default:
MOZ_CRASH("GFX: TexImageTargetForTargetAndFace");
}
}
already_AddRefed<mozilla::layers::Image> ImageFromVideo(
dom::HTMLVideoElement* elem);
bool IsTarget3D(TexImageTarget target);
GLenum DoTexImage(gl::GLContext* gl, TexImageTarget target, GLint level,
const webgl::DriverUnpackInfo* dui, GLsizei width,
GLsizei height, GLsizei depth, const void* data);
GLenum DoTexSubImage(gl::GLContext* gl, TexImageTarget target, GLint level,
GLint xOffset, GLint yOffset, GLint zOffset, GLsizei width,
GLsizei height, GLsizei depth,
const webgl::PackingInfo& pi, const void* data);
GLenum DoCompressedTexSubImage(gl::GLContext* gl, TexImageTarget target,
GLint level, GLint xOffset, GLint yOffset,
GLint zOffset, GLsizei width, GLsizei height,
GLsizei depth, GLenum sizedUnpackFormat,
GLsizei dataSize, const void* data);
} // namespace mozilla
#endif // WEBGL_TEXTURE_H_
Ссылка в новой задаче Показать git blame Копировать постоянную ссылку