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[Feat] (MG_State, MG_Util, MG_Impl/GLImpl, MG_Backend/DirectGLES): desktop-GL single-channel client formats GL_GREEN/GL_BLUE/GL_ALPHA and _INTEGER variants - validate and readback via wide-RGBA channel extraction (GL CTS packed_pixels rgba8_format_green/blue read with them), unpack GREEN/BLUE(_INTEGER) TexImage uploads into the named channel with 0/1 defaults per table 3.3; GL_ALPHA keeps the legacy Red upload mapping (R8 storage + 000R swizzle), its readback corrected at the backend to source channel 3

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swung0x48
2026-07-16 06:47:33 -04:00
parent bae222227a
commit 1cefb9780b
12 changed files with 220 additions and 2 deletions
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MobileGL/MG_Util/Converters/MGToVk/TextureEnumConverter.cpp
+10
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@@ -65,6 +65,16 @@ namespace MobileGL {
return VK_FORMAT_R8G8B8A8_UINT;
case TextureInputFormat::BGRAInteger:
return VK_FORMAT_B8G8R8A8_UINT;
// Single-channel desktop client formats: the client memory holds one component per pixel,
// matching the R8 layouts (the channel it feeds is a pixel-transfer concern, not a layout one).
case TextureInputFormat::Green:
case TextureInputFormat::Blue:
case TextureInputFormat::Alpha:
return VK_FORMAT_R8_UNORM;
case TextureInputFormat::GreenInteger:
case TextureInputFormat::BlueInteger:
case TextureInputFormat::AlphaInteger:
return VK_FORMAT_R8_UINT;
case TextureInputFormat::StencilIndex:
return VK_FORMAT_S8_UINT;
case TextureInputFormat::DepthComponent: