mode->vrefresh is a display-only value and should not be used for calculations
the drm context is now able to differentiate between, for example, 640x480@60.00 and 640x480@59.92 when setting the video mode
BFI support added for 180hz / 240hz / etc. Solves issue with image retention from voltage issues at 120hz BFI. Also disabled BFI while in menu, as if set to an incorrect value for the current refresh rate, could cause severe flickering and difficulty reverting to the correct value.
- Revert odroidgo changes to drm_ctx
- Introduce new drm_go2_ctx specifically for odroidgo2 (and libgo2)
- Add hw_scaling option to mitigate builtin gl scaling/filtering and to
use libgo2 and rga's hw scaling and bicubic filtering via librga. The
quality of the image is improved by this and should be a bit faster.
Credits to CrashOverride for the initial libgo2 port and
commit to RA. And to natinusala for the initial cleanup/commit in the original
drm_ctx driver. NOirBRight for finding this setting and testing.
libgo2 improvements
- Expose rga scale mode as param for future use
- Cleanup whitespace
- Add option to disable managed surfaces and allow direct posting to drm
driver
oga graphics driver
- Uses direct framebuffers in libgo2
- Bitmap font only supported for now
- Uses built-in bicubic filtering: graphics quality better than gl + bilinear
- Support for rotation
- move shader flags from the video drivers to the context drivers
- rework config_load_shader_preset() from configuration.c into retroarch_load_shader_preset() in retroarch.c with proper compatibility check
- implicitly call retroarch_load_shader_preset() in retroarch_get_shader_preset() once per core/content life cycle
- use video_shader_is_supported() instead of video_driver_test_all_flags() where appropriate
- remove GFX_CTX_FLAGS_NONE because it is meaningless
