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[Feat] (MG_State, MG_Impl/GLImpl): per-target default texture objects (name 0) - binding 0 binds a real per-context default object (the initial binding of every unit/target slot, rebound on delete of a bound texture), so glTexImage*/glTexParameter*/glGetTex* on it work like any texture while glIsTexture(0)/Gen/Delete keep excluding it and TexStorage* rejects it per spec; backends skip image-less defaults as cheaply as the old null slots (DirectGLES per-draw sync/bind loops, DirectVulkan sampler-fallback resolve); also accept the full advertised GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS range in glActiveTexture, allow zero-layer TexImage3DMultisample, and let glTexBuffer(buffer=0) detach - the texture section of GL CTS per-case state reset (gluStateReset) now runs clean

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swung0x48
2026-07-16 23:36:43 -04:00
parent efd7b47388
commit 076cd0d19d
11 changed files with 435 additions and 60 deletions
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MobileGL/MG_Backend/DirectVulkan/Renderer/UniformManager.cpp
+15 -1
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@@ -360,6 +360,12 @@ namespace MobileGL::MG_Backend::DirectVulkan {
auto& textureUnit = MG_State::pGLContext->GetTextureUnitObject(unit);
const TextureTarget preferredTarget = programObj.samplerTextureTargetByBinding[binding];
outTexture = textureUnit.GetBindingSlot(preferredTarget).GetBoundObject();
// The slot always holds at least the target's default texture (name 0). While that
// default has no image it is unsampleable; report it as "unbound" so callers keep
// taking their fallback paths instead of trying to sync a storage-less texture.
if (MG_State::GLState::IsUndefinedDefaultTexture(outTexture.get())) {
outTexture.reset();
}
return true;
}
@@ -380,7 +386,15 @@ namespace MobileGL::MG_Backend::DirectVulkan {
const TextureTarget preferredTarget = programObj.samplerTextureTargetByBinding[binding];
// GetBoundObject() returns the SharedPtr by const ref; .get() reads the pointer without
// touching the refcount (no atomic inc/dec per binding per draw).
return textureUnit.GetBindingSlot(preferredTarget).GetBoundObject().get();
MG_State::GLState::ITextureObject* texture =
textureUnit.GetBindingSlot(preferredTarget).GetBoundObject().get();
// The slot always holds at least the target's default texture (name 0). While that
// default has no image it is unsampleable; report it as "unbound" so the caller
// substitutes its fallback texture exactly like it did for the old null slot.
if (MG_State::GLState::IsUndefinedDefaultTexture(texture)) {
return nullptr;
}
return texture;
}
Bool UniformManager::ResolveTexelBufferDescriptor(const MG_State::GLState::ProgramObject& program,