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Blur with new grpahics dirver support #8771

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Rau117 opened this issue Feb 28, 2021 · 5 comments
Closed

Blur with new grpahics dirver support #8771

Rau117 opened this issue Feb 28, 2021 · 5 comments

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@Rau117
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@Rau117 Rau117 commented Feb 28, 2021

Version of OpenTTD

1.11.0-beta2

Expected result

Regular OpenTTD picture
Снимок экрана (1099)

Actual result

Sticky letters, blur on map
Снимок экрана (1098)

Steps to reproduce

Not needed. Tested with clear openttd.cfg and original_windows base graphics

Problem was solved by changing graphic card settings to default for openttd.exe

If you have same problem try to run openttd via another graphics card or create individual profile for openttd.exe in your card driver settings/control panel

@nielsmh
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@nielsmh nielsmh commented Feb 28, 2021

You need to provide some more information, because I don't get any blurring like that.

  • What operating system and version?
  • What GPU?
  • What graphics driver and version?
  • Do you use display scaling?
  • Do you have any override settings in your graphics driver, such as forced antialiasing?

image

@michicc
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@michicc michicc commented Feb 28, 2021

One possible explanation for the font differences: we modified default blitter choices. If the openttd.cfg previously allowed using an 8bpp blitter (e.g. through the support8bpp setting), we would use one, no matter if font anti-aliasing was enabled or not. Now we always try selecting a 32bpp blitter if anti-aliasing is enabled.

@nielsmh
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@nielsmh nielsmh commented Feb 28, 2021

One possible explanation for the font differences: we modified default blitter choices. If the openttd.cfg previously allowed using an 8bpp blitter (e.g. through the support8bpp setting), we would use one, no matter if font anti-aliasing was enabled or not. Now we always try selecting a 32bpp blitter if anti-aliasing is enabled.

Look at the edges of roads (red and yellow stripes), it's very clear there is some kind of blurring going on there, it's not just text that's affected.

@michicc
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@michicc michicc commented Feb 28, 2021

I can't reproduce that in any shape or form.

Purely theoretical, I can think of two reasons: Either the window size doesn't match what we draw, but that would entail Windows somehow lying to us about it. Or there's some kind of filtering going on in the graphics driver (like maybe always enabled anti-aliasing, texture anisotropy or something like that).

@Rau117 Rau117 closed this as completed Mar 1, 2021
@PeterN
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@PeterN PeterN commented Mar 1, 2021

@Rau117 as you closed this, did you manage to solve the issue? If so a pointer to the cause/solution would be useful, thanks!

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4 participants