* For several preview components (cascade + a couple of animation previews), don't create a separate FXSystem for the preview world. Just use the one created internally by the world
* Several bug fixes and improvements to dynamic feature level switch
* Continued conversion of code that references to global feature level.
#codereview Nick.Penwarden
[CL 2229679 by Graeme Thornton in Main branch]
Implemented CookSurround function for AudioFormatOpus, refactoring as much common code from the standard Cook into re-usable functions.
Changed OpusAudioInfo class to use a multistream decoder for all sounds, as 1 and 2 channel sounds can still be decoded by it. Just had to create an array of mappings that would take the internal Opus format and give back PCM data in the order that Unreal expects.
Also made the OpusDecoderWrapper a true wrapper so that you don't have to use any opus functions outside of it and it will not function if WITH_OPUS is not defined.
Added a virtual function to the CompressedAudioInfo interface, to check whether its uncompressed data will be in the Vorbis format. This is to make sure that code currently just checking whether there is a DecompressionState can now be sure that the Vorbis format is being used before routing sound to different speakers.
Made sure that you can't cause any problems by adding or removing a SoundWave from the Audio Streaming Manager more than once. Also rearranged where sounds are added to the manager so that it is only done in one place and it's safe when changing quality triggers recompression/splitting.
Added a global multidimensional array to store all the Vorbis channel orderings as they needed to be used in multiple places.
Added Logging and Memory tracking for the streaming process.
[CL 2217839 by Matthew Griffin in Main branch]
- Material editor preview nodes now work when the editor is in es2 mode
- Make editor primitives work in ES2 mode
- Fix slate font rendering in ES2 mode
- Remove ES2 shader de-gamma when in the editor
- Add a new linear sampler type for linear textures
- Various fixes for dynamic feature level switching
- When in an emulated feature level mode, display some text in the level editor viewport saying what feature level we're running
- Removed feature level parameter from USkeletalMesh::GetResourceForRendering. Not used for anything
- ParticleVertexFactoryPool is now creates feature level specific vertex factories.
[CL 2187558 by Graeme Thornton in Main branch]
Fixes 'checkerboarding' artifact. Needs to be re-enabled when we determine the root cause of the CMASK corruption.
[CL 2171434 by Marcus Wassmer in Main branch]
Last render time for textures can now be exposed via an FLastRenderTimeContainer provided at construction time. Only implemented for texture references. Eventually this can unify last render time for normal textures and texture references.
[CL 2170350 by Nick Penwarden in Main branch]
New files added to contain FVorbisAudioInfo and FOpusAudioInfo, added all necessary includes
Added a few more checks for whether the target platform supports audio streaming where appropriate
Moved #define to .h file as it was being used in two .cpp files (working because of unity build)
[CL 2137973 by Matthew Griffin in Main branch]
Added platform feature/property for audio streaming so that it's not used on platforms that don't support it yet
Prevent full data from being cooked if sound is streaming AND streaming is supported on the cooked platform
Prevent streaming chunks from being cooked if cooked platform doesn't support streaming
Prevent the Resource data from being initialized and full data size being added to stats if sound is streaming
[CL 2130171 by Matthew Griffin in Main branch]
Audio Streaming Manager will keep track of SoundWaves that are marked for streaming and any sound sources that are using those waves.
Added functionality to all Sound Buffers to report which chunk of audio they are currently reading from, which the manager will use to request the current and next chunk be loaded in memory.
Added a struct to contain all of the additional information needed for a Streaming SoundWave and set off requests, which the manager will also keep track of to avoid increasing the memory size of all SoundWaves.
Tidied up the Opus Decompressor to reduce the amount of repeated code and share the basic functionality for streaming and non-streaming usage.
Set XAudio sounds up to use streaming data, with a function added to the audio device so that other platforms won't try to make use of it for the moment.
[CL 2123061 by Matthew Griffin in Main branch]
Fixes TTP 335869 - UE4: RENDERING: CRITICAL: EDITOR: CRASH: Occurs when launching mobile preview on the StarterMap using the Asus UX31 Sandy Bridge Ultrabook
[CL 2119491 by Graeme Thornton in Main branch]
Resources being referenced by the state cache were being released before finished being used.
#codereview Keith.Judge
[CL 2116884 by Jeff Campeau in Main branch]
