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[Fix] (Xfb): never issue a transform feedback capture-point bind the application did not ask for, and error-check the driver span instead of losing it silently

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swung0x48
2026-08-27 12:28:32 -04:00
parent ea5d52f126
commit 05d627ba2d
6 changed files with 1025 additions and 29 deletions
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MobileGL/MG_Backend/DirectGLES/Managers.h
+12 -3
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@@ -544,12 +544,21 @@ namespace MobileGL::MG_Backend::DirectGLES {
// BackendVertexArrayObject::SyncToBackend.
extern Uint64 g_bufferBackendIdGeneration;
// Redundant-bind cache for INDEXED buffer bindings (glBindBufferBase/Range on
// GL_UNIFORM_BUFFER / GL_SHADER_STORAGE_BUFFER): skips the GL call when the
// (id, range) already at that index matches, like the array-buffer/texture/
// sampler caches already do. Invalidated on MakeCurrent (context may reset).
// GL_UNIFORM_BUFFER / GL_SHADER_STORAGE_BUFFER / GL_TRANSFORM_FEEDBACK_BUFFER):
// skips the GL call when the (id, range) already at that index matches, like the
// array-buffer/texture/sampler caches already do. Invalidated on MakeCurrent
// (context may reset).
// Binds the transform feedback capture points [0, bufferCount) from the frontend
// state, and touches nothing else - in particular it never binds a zero the
// application did not ask for. See the definition for why that matters on Mali.
void SyncTransformFeedbackBindingPoints(SizeT bufferCount);
void BindBufferBaseCached(GLenum glTarget, Uint index, Uint id);
void BindBufferRangeCached(GLenum glTarget, Uint index, Uint id, GLintptr offset, GLsizeiptr size);
void InvalidateIndexedBufferBindingCache();
// The transform feedback capture points are per-transform-feedback-OBJECT state, so
// every glBindTransformFeedback swaps all of them under the shadow above. XfbImpl
// calls this on each bind/delete.
void InvalidateTransformFeedbackBindingShadows();
// Re-issues the GL_ATOMIC_COUNTER_BUFFER binding points a program's shaders declare as
// GL_SHADER_STORAGE_BUFFER bindings at the reserved slots the transpiled ESSL was built
// against (BackendProgramObjectImpl::GetAtomicCounterBindings /