mirror of
https://github.com/classilla/tenfourfox.git
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245 lines
7.9 KiB
C
245 lines
7.9 KiB
C
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/* -*- Mode: C++; tab-width: 20; 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 MOZILLA_LAYERS_COMPOSITORTYPES_H
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#define MOZILLA_LAYERS_COMPOSITORTYPES_H
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#include <stdint.h> // for uint32_t
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#include <sys/types.h> // for int32_t
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#include "LayersTypes.h" // for LayersBackend, etc
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#include "nsXULAppAPI.h" // for GeckoProcessType, etc
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#include "mozilla/gfx/Types.h"
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#include "mozilla/EnumSet.h"
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#include "mozilla/TypedEnumBits.h"
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namespace mozilla {
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namespace layers {
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/**
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* Flags used by texture clients and texture hosts. These are passed from client
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* side to host side when textures and compositables are created. Usually set
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* by the compositableCient, they may be modified by either the compositable or
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* texture clients.
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*/
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enum class TextureFlags : uint32_t {
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NO_FLAGS = 0,
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// Use nearest-neighbour texture filtering (as opposed to linear filtering).
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USE_NEAREST_FILTER = 1 << 0,
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// The compositor assumes everything is origin-top-left by default.
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ORIGIN_BOTTOM_LEFT = 1 << 1,
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// Force the texture to be represented using a single tile (note that this means
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// tiled textures, not tiled layers).
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DISALLOW_BIGIMAGE = 1 << 2,
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// The buffer will be treated as if the RB bytes are swapped.
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// This is useful for rendering using Cairo/Thebes, because there is no
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// BGRX Android pixel format, and so we have to do byte swapping.
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//
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// For example, if the GraphicBuffer has an Android pixel format of
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// PIXEL_FORMAT_RGBA_8888 and isRBSwapped is true, when it is sampled
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// (for example, with GL), a BGRA shader should be used.
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RB_SWAPPED = 1 << 3,
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// Data in this texture has not been alpha-premultiplied.
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// XXX - Apparently only used with ImageClient/Host
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NON_PREMULTIPLIED = 1 << 4,
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// The texture should be recycled when no longer in used
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RECYCLE = 1 << 5,
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// If DEALLOCATE_CLIENT is set, the shared data is deallocated on the
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// client side and requires some extra synchronizaion to ensure race-free
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// deallocation.
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// The default behaviour is to deallocate on the host side.
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DEALLOCATE_CLIENT = 1 << 6,
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DEALLOCATE_SYNC = 1 << 6, // XXX - make it a separate flag.
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DEALLOCATE_MAIN_THREAD = 1 << 8,
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// After being shared ith the compositor side, an immutable texture is never
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// modified, it can only be read. It is safe to not Lock/Unlock immutable
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// textures.
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IMMUTABLE = 1 << 9,
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// The contents of the texture must be uploaded or copied immediately
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// during the transaction, because the producer may want to write
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// to it again.
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IMMEDIATE_UPLOAD = 1 << 10,
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// The texture is part of a component-alpha pair
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COMPONENT_ALPHA = 1 << 11,
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// OR union of all valid bits
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ALL_BITS = (1 << 12) - 1,
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// the default flags
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DEFAULT = NO_FLAGS
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};
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MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(TextureFlags)
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static inline bool
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TextureRequiresLocking(TextureFlags aFlags)
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{
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// If we're not double buffered, or uploading
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// within a transaction, then we need to support
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// locking correctly.
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return !(aFlags & (TextureFlags::IMMEDIATE_UPLOAD |
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TextureFlags::IMMUTABLE));
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}
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/**
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* The type of debug diagnostic to enable.
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*/
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enum class DiagnosticTypes : uint8_t {
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NO_DIAGNOSTIC = 0,
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TILE_BORDERS = 1 << 0,
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LAYER_BORDERS = 1 << 1,
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BIGIMAGE_BORDERS = 1 << 2,
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FLASH_BORDERS = 1 << 3,
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ALL_BITS = (1 << 4) - 1
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};
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MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(DiagnosticTypes)
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#define DIAGNOSTIC_FLASH_COUNTER_MAX 100
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/**
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* Information about the object that is being diagnosed.
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*/
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enum class DiagnosticFlags : uint16_t {
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NO_DIAGNOSTIC = 0,
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IMAGE = 1 << 0,
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CONTENT = 1 << 1,
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CANVAS = 1 << 2,
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COLOR = 1 << 3,
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CONTAINER = 1 << 4,
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TILE = 1 << 5,
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BIGIMAGE = 1 << 6,
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COMPONENT_ALPHA = 1 << 7,
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REGION_RECT = 1 << 8,
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NV12 = 1 << 9,
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YCBCR = 1 << 10
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};
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MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(DiagnosticFlags)
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/**
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* See gfx/layers/Effects.h
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*/
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enum class EffectTypes : uint8_t {
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MASK,
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BLEND_MODE,
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COLOR_MATRIX,
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MAX_SECONDARY, // sentinel for the count of secondary effect types
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RGB,
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YCBCR,
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NV12,
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COMPONENT_ALPHA,
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SOLID_COLOR,
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RENDER_TARGET,
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VR_DISTORTION,
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MAX //sentinel for the count of all effect types
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};
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/**
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* How the Compositable should manage textures.
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*/
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enum class CompositableType : uint8_t {
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UNKNOWN,
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CONTENT_TILED, // tiled painted layer
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IMAGE, // image with single buffering
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IMAGE_OVERLAY, // image without buffer
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IMAGE_BRIDGE, // ImageBridge protocol
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CONTENT_SINGLE, // painted layer interface, single buffering
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CONTENT_DOUBLE, // painted layer interface, double buffering
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COUNT
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};
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#ifdef XP_WIN
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typedef void* SyncHandle;
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#else
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typedef uintptr_t SyncHandle;
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#endif // XP_WIN
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/**
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* Sent from the compositor to the content-side LayerManager, includes properties
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* of the compositor and should (in the future) include information about what
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* kinds of buffer and texture clients to create.
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*/
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struct TextureFactoryIdentifier
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{
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LayersBackend mParentBackend;
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GeckoProcessType mParentProcessId;
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EnumSet<gfx::CompositionOp> mSupportedBlendModes;
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int32_t mMaxTextureSize;
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bool mSupportsTextureBlitting;
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bool mSupportsPartialUploads;
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SyncHandle mSyncHandle;
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explicit TextureFactoryIdentifier(LayersBackend aLayersBackend = LayersBackend::LAYERS_NONE,
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GeckoProcessType aParentProcessId = GeckoProcessType_Default,
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int32_t aMaxTextureSize = 4096,
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bool aSupportsTextureBlitting = false,
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bool aSupportsPartialUploads = false,
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SyncHandle aSyncHandle = 0)
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: mParentBackend(aLayersBackend)
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, mParentProcessId(aParentProcessId)
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, mSupportedBlendModes(gfx::CompositionOp::OP_OVER)
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, mMaxTextureSize(aMaxTextureSize)
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, mSupportsTextureBlitting(aSupportsTextureBlitting)
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, mSupportsPartialUploads(aSupportsPartialUploads)
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, mSyncHandle(aSyncHandle)
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{}
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};
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/**
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* Information required by the compositor from the content-side for creating or
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* using compositables and textures.
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* XXX - TextureInfo is a bad name: this information is useful for the compositable,
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* not the Texture. And ith new Textures, only the compositable type is really
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* useful. This may (should) be removed in the near future.
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*/
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struct TextureInfo
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{
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CompositableType mCompositableType;
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TextureFlags mTextureFlags;
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TextureInfo()
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: mCompositableType(CompositableType::UNKNOWN)
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, mTextureFlags(TextureFlags::NO_FLAGS)
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{}
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explicit TextureInfo(CompositableType aType,
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TextureFlags aTextureFlags = TextureFlags::DEFAULT)
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: mCompositableType(aType)
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, mTextureFlags(aTextureFlags)
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{}
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bool operator==(const TextureInfo& aOther) const
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{
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return mCompositableType == aOther.mCompositableType &&
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mTextureFlags == aOther.mTextureFlags;
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}
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};
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/**
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* How a SurfaceDescriptor will be opened.
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*
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* See ShadowLayerForwarder::OpenDescriptor for example.
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*/
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enum class OpenMode : uint8_t {
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OPEN_NONE = 0,
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OPEN_READ = 0x1,
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OPEN_WRITE = 0x2,
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OPEN_READ_WRITE = OPEN_READ|OPEN_WRITE,
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OPEN_READ_ONLY = OPEN_READ,
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OPEN_WRITE_ONLY = OPEN_WRITE
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};
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MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(OpenMode)
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// The kinds of mask texture a shader can support
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// We rely on the items in this enum being sequential
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enum class MaskType : uint8_t {
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MaskNone = 0, // no mask layer
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Mask2d, // mask layer for layers with 2D transforms
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Mask3d, // mask layer for layers with 3D transforms
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NumMaskTypes
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};
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} // namespace layers
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} // namespace mozilla
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#endif
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