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[Fix, Test] (TextureUtil, GLImpl): accept GL_STENCIL_INDEX as a stencil-only texture internal format

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swung0x48
2026-08-20 10:49:57 -04:00
parent a8bebe1a3c
commit 042c61fb75
6 changed files with 60 additions and 6 deletions
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MobileGL/MG_Impl/GLImpl/Texture/GL_Texture.cpp
+2 -2
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@@ -4303,8 +4303,8 @@ namespace MobileGL::MG_Impl::GLImpl {
}
// Shared format/type/internal-format matrix (packed-type pairing, depth-vs-color mismatch,
// integer-ness). Also rejects STENCIL_INDEX readback, which needs GL_ARB_texture_stencil8
// (not advertised by MobileGL).
// integer-ness). Also rejects a STENCIL_INDEX readback of anything but stencil-only
// storage, which is the only pairing GL 4.4 / ARB_texture_stencil8 ever made legal.
if (!TextureImpl::ValidateTextureInternalFormatCompatibleWithInput(
textureInputFormat, textureObject->GetFormat(), texturePixelDataType)) {
return false;
MobileGL/MG_Impl/GLImpl/Texture/Validators.cpp
+7 -3
View File
@@ -313,9 +313,13 @@ namespace MobileGL::MG_Impl::GLImpl::TextureImpl {
return false;
}
// TexImage in core 3.3 has no stencil-only upload path (that arrived with GL 4.4).
if (format == TextureInputFormat::StencilIndex) {
return recordInvalidOperation("STENCIL_INDEX is not a valid texture upload format");
// The stencil-only transfer path arrived with GL 4.4 / ARB_texture_stencil8, and only ever
// pairs with stencil-only storage: against a depth, depth-stencil or colour internal format
// STENCIL_INDEX keeps the pre-4.4 answer (GL CTS packed_pixels feeds exactly that pairing
// and expects INVALID_OPERATION).
if (format == TextureInputFormat::StencilIndex &&
internalFormat != TextureInternalFormat::StencilIndex8) {
return recordInvalidOperation("STENCIL_INDEX requires a stencil-only internal format");
}
if (IsDepthLikeInputFormat(format) != IsDepthLikeInternalFormat(internalFormat)) {