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[Feat] (MG_Impl, MG_Util): STENCIL_INDEX8 renderbuffers; report distinct D/S renderbuffers unsupported

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GL_STENCIL_INDEX8 becomes a first-class internal format (VK_FORMAT_S8_UINT
backing, metrics, classifiers, converters), so glRenderbufferStorage
accepts it instead of leaving GL_INVALID_ENUM behind. Framebuffer
completeness now also mirrors the renderer's gate for renderbuffers:
distinct depth/stencil renderbuffer attachments (or a renderbuffer
paired with a texture) report GL_FRAMEBUFFER_UNSUPPORTED - the spec only
requires the same-image case - instead of passing completeness and then
failing at draw/clear (verify_mixed_attachments.* now passes).
This commit is contained in:
BZLZHH
2026-08-01 01:50:34 -04:00
parent 107b56d603
commit 4532cae175
8 changed files with 37 additions and 1 deletions
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MobileGL/MG_Impl/GLImpl/Framebuffer/GL_Framebuffer.cpp
+23 -1
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@@ -45,10 +45,32 @@ namespace MobileGL::MG_Impl::GLImpl {
depthAttachment.GetTextureLevel() != stencilAttachment.GetTextureLevel();
}
// Mirrors the renderer-side gate: distinct depth/stencil renderbuffers (or a
// renderbuffer paired with a texture) cannot form one Vulkan depth-stencil
// attachment, and GL permits reporting such framebuffers as UNSUPPORTED.
Bool HasDistinctCompleteDepthStencilRenderbufferAttachments(
const MG_State::GLState::FramebufferObject& framebufferObject) {
if (framebufferObject.GetExternalIndex() == 0) {
return false;
}
const auto& depthAttachment = framebufferObject.GetAttachment(FramebufferAttachmentType::Depth);
const auto& stencilAttachment = framebufferObject.GetAttachment(FramebufferAttachmentType::Stencil);
if (!depthAttachment.IsComplete() || !stencilAttachment.IsComplete()) {
return false;
}
if (depthAttachment.IsRenderbuffer() && stencilAttachment.IsRenderbuffer()) {
return depthAttachment.GetRenderbuffer().get() != stencilAttachment.GetRenderbuffer().get();
}
return (depthAttachment.IsRenderbuffer() || stencilAttachment.IsRenderbuffer()) &&
(depthAttachment.IsTexture() || stencilAttachment.IsTexture());
}
Bool IsUnsupportedFramebufferForDirectVulkan(
const MG_State::GLState::FramebufferObject& framebufferObject) {
// TODO: Keep this in sync with DirectVulkan renderbuffer support as color renderbuffer rendering lands.
return HasDistinctCompleteDepthStencilTextureAttachments(framebufferObject);
return HasDistinctCompleteDepthStencilTextureAttachments(framebufferObject) ||
HasDistinctCompleteDepthStencilRenderbufferAttachments(framebufferObject);
}
Bool HasDefinedAttachment(const MG_State::GLState::FramebufferObject& framebufferObject) {