[Android] [Vulkan] Gran Turismo glitches and performance problem

[Blacob777]

Look on car color and fps
Vulkan

OpenGL

[unknownbrackets]

Could be an obscure blending mode. What device / GPU? Is OpenGL how it's supposed to look?

-[Unknown]

[Blacob777]

@unknownbrackets xiaomi mi5s plus\adreno 530

[ghost]

This is still an issue to you Blacob777?
hmm.. ogl and vk has the same performance on this game now using ppsspp v1.12
opengl

vulkan

[ghost]

I can reproduce this on my OPPO A3S ADRENO 506.

Record_2022-09-27-14-02-20.mp4

UCUS98632.ppdmp.zip

[hrydgard]

@Gamemulatorer Can't really tell from that video - is the problem just that it's slow, or that there car's color is wrong like the early posts in this thread? Also, is it faster in OpenGL?

[ghost]

There's a white line that flickering, yeah this is also slow in opengl backend.

[hrydgard]

The white line flickering is not a bug, that happens on the real PSP too, I'm pretty sure. Just a matter of badly designed geometry (they should have used a texture so filtering could have smoothed it out). So I think we're just looking at a performance issue. The slight screen shaking btw is a long-known issue where the game tries to do simple temporal antialiasing using the slowness of the display, if you go into game settings and switch to TV mode it disappears.