RetroArch/deps/Pigs-In-A-Blanket

Pigs In A Blanket | OpenGL ES 2.0 on the PS Vita by CBPS

A Piglet/ShaccCg Wrapper Library for OpenGL ES 2.0 Support on the Vita

Now with System App and Experimental MSAAx4 Support!

---

Compiling

• Install DolceSDK (Has not been tested on VitaSDK as of yet)
• Run make -j4 install
• Link libpib.a in your projects

Note when building your projects:

ALWAYS COMPILE YOUR PROJECTS WITH UNSAFE. Doing otherwise will result in PIB failing.

If using CMake, make sure to specify set(DOLCE_ELF_CREATE_FLAGS "${DOLCE_ELF_CREATE_FLAGS} -h 2097152")
If using Makefile, make sure to specify dolce-elf-create -h 2097152

Piglet needs an SceLibc heap size of at least 2MB to intialize. Without it, the module will fail to start. This heap needs to be larger if using -nostdlib as this becomes your main heap. More info on -nostdlib support in the headers.

These stubs are all linked automatically as they are combined with PIB after being built. Be sure to be aware of that.

• liblibScePiglet_stub.a (Yes, that's the name)
• libSceShaccCg_stub.a
• libtaihen_stub.a
• libSceGxmInternalForVsh_stub.a
• libSceGxmInternal_stub.a
• libSceSharedFb_stub.a
• libSceAppMgr_stub.a

Check the "Samples" folder for examples of how to use PIB to initialize OpenGLES 2.0 with EGL or GLFW.

Yes. We have a GLFW3 port for the vita. You can use it by simply including it in your project as normal or build it here: https://github.com/SonicMastr/glfw-vita
Note: Button mapping is perfect and there's full touchscreen support.

To install Piglet on your Vita, just use the Pigs in a Blanket Configuration Tool

Documentation Provided in the Headers. I'm clean.

What is Pigs in a Blanket?

This library is a developer focused wrapper which provides easy initialization and expandability, with some quality of life features, including supporting resolutions up to 1920x1080 native on the Playstion TV, and on the Vita with Sharpscale. Developers can choose make their applications with one resolution in mind, as all long as the code is made to scale by dimension, PIB will handle the rest with it's companion app, the Pigs in a Blanket Configuration Tool, which allows the user to specify their own preference of resultion that will automatically override the original settings. For more information aobut Piglet, you can check out our information about it on our forum post.

It library doubles as the heart of Piglet's Shader compiling abilities, removed in the standalone module. I spent the time to rewrite the shader compiler code according to PSM specifications to re-enable the ShaccCg support that was removed. This includes proper return codes and regular log output, so you never have to wonder what's going on with your shaders. Piglet DOES NOT support GLSL shaders though, so you'll need to convert the shaders to CG. Check the resources at the end of this README for converting your shaders.

This library also support EGL 1.5 eglGetProcAddress functionality using the PIB_GET_PROC_ADDR_CORE flag, as the orignal Piglet only returns extensions per EGL 1.4 standard. Thanks to dots-tb we were able to create a simple patch to support returning GLES functions as well.

Custom Extension Support

This library will allow us to add extensions using native functions as we feel fit. We'll accept the requests of any developers who have ideas of what extensions to add utilizing PIB, and they will all be able to be accessed via eglGetProcAddress.

Supported Extensions

GL	EGL
GL_EXT_draw_instanced	EGL_SCE_piglet_sync
GL_EXT_instanced_arrays	EGL_SCE_piglet_vita_pre_swap_callback
GL_SCE_piglet_shader_binary	EGL_SCE_piglet_vita_vsync_callback
GL_SCE_texture_resource
GL_OES_texture_npot
GL_OES_rgb8_rgba8
GL_OES_depth_texture
GL_EXT_texture_format_BGRA8888
GL_EXT_read_format_bgra
GL_OES_texture_half_float
GL_OES_texture_half_float_linear
GL_OES_vertex_half_float
GL_OES_element_index_uint
GL_EXT_texture_compression_dxt1
GL_EXT_texture_compression_dxt3
GL_EXT_texture_compression_dxt5
GL_EXT_texture_compression_s3tc
GL_EXT_texture_storage
GL_IMG_texture_compression_pvrtc

Special Thanks

• GrapheneCt - Finding the Piglet Module and being a main part of the Project in reverse engineering and testing
• dots-tb - Initial idea of using PSM and efforts in getting all of the names for Piglet, as well as being a main part of the Project in reverse engineering and testing
• cuevavirus - Help with debugging and sense of direction
• CreepNT - Help with debugging
• Princess-of-Sleeping - Dump tool and PrincessLog
• xyzz - Initial deep dive into how ShaccCg works
• Zer0xFF and masterzorag - Their amazing work on the PS4 Piglet reverse engineering

GLSL to CG Conversion Resources

Microsoft GLSL to HLSL: https://docs.microsoft.com/en-us/windows/uwp/gaming/glsl-to-hlsl-reference
Nvidia CG Standard Library: http://developer.download.nvidia.com/cg/index_stdlib.html
Nvidia CG GLSL Vert to CG: http://developer.download.nvidia.com/cg/glslv.html
Nvidia CG GLSL Frag to CG: http://developer.download.nvidia.com/cg/glslf.html

This requires both libshacccg.suprx and libScePiglet.suprx to be located in ur0:data/external