STARK: Only actors are visible in OpenGL 1.3 rendering mode

[dwatteau]

This is with ScummVM 2.7.0 (and current Git HEAD) on OSX PPC Tiger, on an old iBook G4 with an ATI Radeon 9200 that's limited to OpenGL 1.3.

When using the OpenGL rendering mode on this machine, I can't see anything, except for the actors. Even the menu is blank.

I'm attaching the -d6 output and some screenshots.

As discussed in the #engines-3d channel on Discord on 2023-01-22, a possible explanation for this was maybe the lack of "NPOT texture" on this setup?

Some further notes:

• I'm not using any shader.
• Rendering of this game is OK on the same machine using the TinyGL software renderer.
• The same machine properly displays Grim Fandango and Driller, whether in TinyGL or OpenGL mode.
• The OpenGL renderer is OK on a "newer" PowerBook with an ATI Radeon 9600 XT (which supports OpenGL 2.0 and NPOT textures).

[dwatteau]

Example of rendering issue in OpenGL 1.3 rendering mode

[dwatteau]

Other example of rendering issue. Note that the cursor at the top is also blank

[dwatteau]

ScummVM -d6 output on the iBook G4 with OpenGL 1.3

[dwatteau]

Fixed in ScummVM 2.8.0pre.

[dwatteau]

Oops, my bad, it works in software rendering mode, but the issue is still there in 2.8.0pre in OpenGL rendering mode.

[aquadran]

I think it might require changes in renderer to support it. Rather avoid for 2.9.0 release.