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Apply luminance multiplier in copy_cubemap_to_panorama#111577

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Repiteo merged 1 commit intogodotengine:masterfrom
Kaleb-Reid:fix-lightmap-luminance
Oct 14, 2025
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Apply luminance multiplier in copy_cubemap_to_panorama#111577
Repiteo merged 1 commit intogodotengine:masterfrom
Kaleb-Reid:fix-lightmap-luminance

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@Kaleb-Reid
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As predicted in the linked issue, it seems that the luminance multiplier needs to be factored in.

The luminance multiplier only affects the panorama copy mode in the shader currently, but I can make it usable for all the modes if need be.

Fixes #94401

@Kaleb-Reid Kaleb-Reid requested a review from a team as a code owner October 13, 2025 06:38
@AThousandShips AThousandShips added bug topic:rendering topic:3d cherrypick:4.4 Considered for cherry-picking into a future 4.4.x release cherrypick:4.5 Considered for cherry-picking into a future 4.5.x release labels Oct 13, 2025
@AThousandShips AThousandShips added this to the 4.6 milestone Oct 13, 2025
@jcostello
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Can you show the result?

@Kaleb-Reid
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@jcostello The mrp is from #94401, all screenshots are taken in mobile, the only difference is which renderer baked the lightmaps.

Forward+ forward_plus
Mobile 4.5.1-rc2 mobile_old
Mobile this pr mobile_new

@Kaleb-Reid Kaleb-Reid force-pushed the fix-lightmap-luminance branch from ae13f33 to 8173f43 Compare October 14, 2025 04:41
@clayjohn clayjohn removed the cherrypick:4.4 Considered for cherry-picking into a future 4.4.x release label Oct 14, 2025
@Repiteo Repiteo merged commit 0400b70 into godotengine:master Oct 14, 2025
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@Repiteo
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Repiteo commented Oct 14, 2025

Thanks!

@Kaleb-Reid Kaleb-Reid deleted the fix-lightmap-luminance branch October 14, 2025 20:16
@akien-mga akien-mga changed the title Apply luminance multiplier in copy_cubemap_to_panorama Apply luminance multiplier in copy_cubemap_to_panorama Jan 8, 2026
@akien-mga
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Cherry-picked for 4.5.2.

@akien-mga akien-mga removed the cherrypick:4.5 Considered for cherry-picking into a future 4.5.x release label Jan 8, 2026
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Vulkan Mobile: LightmapGI baking makes environment light twice as dark as it should be

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