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[Fix] (Espryt): re-arm the packed16 probe on the allocation-scoped mirror the device actually has and let any mirrored level trigger the widening

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swung0x48
2026-08-28 00:22:15 -04:00
parent bf376b230f
commit 5d140a41ce
9 changed files with 239 additions and 150 deletions
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MobileGL/Config.h
+5 -4
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@@ -264,10 +264,11 @@ namespace MobileGL::MG_Config {
// MOBILEGL_WIDEN_PACKED16_STORAGE: DirectGLES stores GL_RGB565/GL_RGB5(A1)/GL_RGBA4
// images as 8-bit-per-channel ES storage (GL_RGB8/GL_RGBA8) instead of the driver's
// native 16-bit packed formats. Auto defers to a POST driver-bug probe
// (SelfTest::CopyImageMirrorsPacked16FieldOrder): some Mali drivers keep a MIRRORED
// field order for the 16-bit packed texels of a non-zero mip level of a
// GL_TEXTURE_2D_ARRAY, so glCopyImageSubData - a raw texel-block move - lands
// R/G/B/A reversed whenever exactly one endpoint is such a level
// (SelfTest::CopyImageMirrorsPacked16FieldOrder): some Mali drivers store SOME
// packed16 allocations with a MIRRORED field order (allocation-scoped and
// shape/context dependent - the failing 30x30x12 GL_TEXTURE_2D_ARRAYs are mirrored
// at every level), so glCopyImageSubData - a raw texel-block move - lands R/G/B/A
// reversed whenever exactly one endpoint sits in a mirrored allocation
// (KHR-GL4x.copy_image.functional rgb5/rgb5_a1/rgba4 x every *2d_array* pair).
// With no 16-bit packed ES image left there is no field order to disagree about; the
// client word still round-trips exactly, because the canonical shadow is already