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beetle-psx-libretro/rsx
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BinBashBanana 3f525d7d67 GLES 3.0 Support on HW Renderer 
updated makefiles for:
- android
- ios
- emscripten
- rpi4

tested on emscripten, GLES3 must be explicitly enabled for android and ios

fixed some things in glsm (libretro-common)

colors are not 100% perfect on GLES3 due to it not including the 1555 ABGR color format. GLES3 uses 5551 instead.
2022-07-06 18:17:16 -07:00
..
shaders_gl GLES 3.0 Support on HW Renderer 2022-07-06 18:17:16 -07:00
README.md Update READMEs 2019-12-25 11:04:17 -08:00
rsx_dump.cpp Cut down on stdio.h usage 2020-10-03 21:51:46 +02:00
rsx_dump.h Rework UpdateDisplayMode and rsx set_display_mode functions 2020-02-25 13:04:35 -08:00
rsx_intf.cpp Make it so you can select between the old and new crop behavior 2021-11-01 17:25:49 +01:00
rsx_intf.h Make it so you can select between the old and new crop behavior 2021-11-01 17:25:49 +01:00
rsx_lib_gl.cpp GLES 3.0 Support on HW Renderer 2022-07-06 18:17:16 -07:00
rsx_lib_gl.h Revert "improve context switching" 2020-10-02 13:28:38 +02:00
rsx_lib_vulkan.cpp Make it so you can select between the old and new crop behavior 2021-11-01 17:25:49 +01:00
rsx_lib_vulkan.h Add options to exclude sprites and 2D polygons from texture filtering 2020-09-26 22:27:08 -03:00

README.md

RSX API and OpenGL 3.3 Renderer

RSX API

The RSX API is the means by which components of the Beetle PSX libretro core interface with the hardware renderers. The RSX API offers two general classes of functions for the core. The first class consists of various functions used to perform libretro-specific actions such as reading core options or preparing/finalizing the current emulation loop frame. The second class of functions consists of RSX interface functions that the emulated PSX GPU uses to issue commands to the hardware renderer. Not every emulated PSX GPU command has a corresponding RSX interface function, but the set of available functions can be extended or modified as necessary when bugs are discovered and higher accuracy is required.

Each unique hardware renderer will implement RSX interface functions as another layer of function calls, typically but not necessarily one per RSX interface function. The RSX interface should then select the correct function to call based on the currently running hardware renderer.

The RSX API also includes support for dumping RSX API calls to file, which can be utilized for debugging purposes by any renderers that implement RSX playback.

OpenGL 3.3 Renderer

The OpenGL renderer is currently implemented in rsx_lib_gl.cpp and can be called via the functions exposed in rsx_lib_gl.h.

Building

The RSX API and OpenGL renderer are components of the Beetle PSX libretro core. To build with OpenGL support, run make HAVE_OPENGL=1 in the repository's top level directory. To build with all possible hardware renderers, instead run make HAVE_HW=1. To build with dump support, additionally pass RSX_DUMP=1.

Coding Style

The preferred coding style for the rsx subdirectory is the libretro coding style. See: https://docs.libretro.com/development/coding-standards/

Credits

The OpenGL renderer was originally authored by simias as a port/plugin of Rustation's GL renderer to Beetle PSX.