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OpenGL Enhancement Renderer fails if all layers are off. #2260

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Lokathor opened this issue Jul 28, 2021 · 1 comment
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OpenGL Enhancement Renderer fails if all layers are off. #2260

Lokathor opened this issue Jul 28, 2021 · 1 comment
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hardware:2D Issues in the 2D/pixel pipeline subsystem platform:GBA Game Boy Advance-related issues
Milestone
mGBA 0.9.3

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@Lokathor
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Test Rom: demo.zip

This starts up, turns off the Forced Blank bit, and then write pink to the backdrop color palette slot.

This should make pink appear on the whole screen.

However, if the OpenGL display driver is used and the OpenGL enhancement renderer is selected, then the screen ends up all white instead, as if the forced blank bit was still on.
@endrift
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endrift commented Jul 28, 2021

This seems to work fine...if the BIOS intro plays. Otherwise I'm able to reproduce as described.

@endrift endrift added hardware:2D Issues in the 2D/pixel pipeline subsystem platform:GBA Game Boy Advance-related issues labels Jul 28, 2021
@endrift endrift added this to the mGBA 0.9.3 milestone Jul 28, 2021
endrift added a commit that referenced this issue Jul 29, 2021
@endrift
GBA Video: Fix backdrop color if DISPCNT is first set to 0 (fixes #2260)
9cc541a
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hardware:2D Issues in the 2D/pixel pipeline subsystem platform:GBA Game Boy Advance-related issues
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mGBA 0.9.3
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