Native SDK:
Removed the host compilation of glslangValidator when cross compiling as this had the potential to fail quite easily. This also required a dependency of host toolsets for cross compiled builds which wasn’t desirable. For cross-compiled builds we now download the matching glslang binary release package (https://github.com/KhronosGroup/glslang/releases/) for the host platform and extract it into the correct place (SDK/bin). Only do this if a glslangValidator binary isn’t already in the host bin directory meaning the step will only happen if a cross compiled build is the first build of the SDK on a particular host platform.
Removed duplicated code for downloading external projects using a common function defined in cmake/Functions.cmake.
Removed disabling of ENABLE_HLSL, ENABLE_OPT, ENABLE_AMD_EXTENSIONS and ENABLE_NV_EXTENSIONS.
Fixed an issue in equi_to_cube.py where the displayed width and height of the generated map were half of their real dimensions.
Tweaked CMake options to better facilitate MinGW Win32 builds.
Building for iOS now supports code signing through build command line.

PVRFrame:
Added support for EGL_EXT_swap_buffers_with_damage/EGL_KHR_swap_buffers_with_damage.
Added support for EGL_KHR_partial_update.
Fixed a possible crash on OSX in eglQuerySurface.

Fixed a bug that caused OpenGLES examples on macOS to crash on start.

Fix mismatched precision in EffectReflectionRefraction

Removed the host compilation of glslangValidator when cross compiling as this had the potential to fail quite easily. This also required a dependency of host toolsets for cross compiled builds which wasn't desirable.
For cross-compiled builds we now download the matching glslang binary release package (https://github.com/KhronosGroup/glslang/releases/download/) for the host platform and extract it into the correct place (SDK/bin). Only do this if a glslangValidator binary isn't already in the host bin directory meaning the step will only happen if a cross compiled build is the first build of the SDK on a particular host platform.

Removed duplicated code for downloading external projects using a common function defined in cmake/Functions.cmake.

Removed Unnecessary Includes from:
PVRVK/ExtensionsVK.cpp
PVRVK/LayersVk.cpp

Fixed an issue in equi_to_cube.py where it displayed the generated Cubemap width and height as half the value that they actually were.

Updated README.rst to include more badges - License and tag.

Changed the License filename and fixed the content to be identifiable by
Github.

- Added builds for Windows 64/32 bit.
- Added builds for gcc Linux 64/32 bit.
- Added builds for Android.
- Added Names for builds.

SDK 19.1(v5.3) release.  Refer to our release notes for details about the changes:
https://www.imgtec.com/developers/powervr-sdk-tools/whats-new/#2019r1

Adding a travis.yml file. The file configures builds for Windows, macOS and Linux (Xenial). Builds are limited to the master branch.
Updating the README.rst file to show the travis build badge.

Update Feature Request Issue templates

Created a template for feature request issues.

Update Bug Report template

Fixed compilation issue in PVRCore/texture/TextureHeader.h seen when compiling with Visual Studio 2019 reported by rcdailey. Adding an include for <string>  fixes the issue.

Using logLevel param instead of undefined 'error' variable.

The pipeline cache object allocated by the UIRenderer to create
the sprite rendering pipeline is not deallocated in the
destroy function. This causes the Vulkan validation layers to
output a message and terminate the application with an exception
when running in debug mode.

Fixes:
Added Android surface creation instance's extension string
Updated PlatformContextVulkanGlue.cpp
Fixed bug in platform context allocateImageDeviceMemory function
Updated NativeLibraryVulkanGlue.h
Added GetPhysicalDeviceFormatProperties function pointer declaration
Updated NativeLibraryVulkanGlue.cpp
Added GetPhysicalDeviceFormatProperties and XLIB function pointers
Updated TextureUtilsVk.cpp
Cleaned up the commandbuffer begin info
Updated ImageUtilsVk.cpp
Updated CommandBufferVk.cpp
Updated ApiCommandsGles.cpp
Updated ContextGles.h
Updated DescriptorSetGles.h
Added internal texture units support for  Descritpor set es2, so the user dont have to set the via setUniform
Updated DescriptorSet.h
Descriptor set updated for es2 texture unit support
Fixed build issue from last commit (texture units framework support for gles)
Added ./Builds/Include/GLES3/glesRayAPI.h to .gitignore
Created ws.mak
Created platform.mak
Created api.mak
Added ArmV8 libs
Updated CommandBufferVk.cpp
Vullkan Command, bind pipeline should be VK_PIPELINE_BIND_POINT_COMPUTE

Some general stability fixes
Some warnings removed
Removed the release() function from the smart pointer to avoid confusion with std::auto_ptr release() semantics
Changed linux optimization flag from O3 to O2 that was causing problems with GCC <4.9 and the prebuild binaries
Fixed a mismatched malloc/delete

Brand-new Vulkan Backend
Several fixes and updates in the Framework, including:
  Updates to the RefCountedResource class to allow embedding
  Performance optimizations
  Breaking up of the PVRApi into the PVRNativeApi(API bindings) and PVRApi(API abstraction)
  Several interface and implementation updates of PVRApi to improve OpenGL ES and Vulkan compatibility
  Ported HelloAPI, IntroducingPVRShell, IntroducingPVRAssets, IntroducingPVRApi, Bumpmap, Skinning, DeferredShading to Vulkan
  Created new Vulkan specific demo - the GnomeHorder (Multithreaded rendering)

* Ported a core of relevant SDK examples to be targeting the new PowerVR Framework
* Examples are still classified by beginner, intermediate and advanced levels
* Examples are now built per API family instead of per API version. At the moment, OpenGL ES Programmable pipeline (2.0+) is provided.
* Platform max supported API version is now checked at runtime, usually creating the latest possible OpenGL context version unless otherwise instructed
* Revamped the look and feel of the SDK examples by using new themes and assets

* Brand new PowerVR Framework, replacing the PVRShell and PVRTools. The new framework consists of separate libraries providing groups of functionality as modules. These modules are PVRCore, PVRAssets, PVRShell, PVRPlatformGlue, PVRApi, PVRUIRenderer and PVRCamera
* PVRCore provides support for the other modules
* PVRShell provides platform abstraction/entry point (replaces the old PVRShell)
* PVRPlatformGlue provides platform/API joining functionality to PVRShell
* PVRApi provides an API abstraction on top of which to build the example (replacing PVRTools)
* PVRUIRenderer provides 2D element drawing/layout functions (replaces the old tools Print3D)
* PVRCamera provides HW Camera abstractions (replaces the CameraModule)
* Uses C++ (namespacing, smart pointers, OOP), the C++ standard library, GLM for maths

* Updated the PowerVR SDK Browser in line with the changes brought about to the PowerVR SDK
* Source code documentation for the PowerVR Framework is packaged in their respective modules, as well as being accessible through the PowerVR SDK Browser

The 3.5 SDK is distributed under the MIT license