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[Feat] (Espryt, P11 B2): import a T0 store with glBufferStorageExternalEXT as the adopted twin - no staged copy, server writes queued GPU-ordered, CPU readers on the import's coherent map, fence-gated release, re-import after a context loss, and the sustained-lock POST in a throwaway context

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This commit is contained in:
swung0x48
2026-09-29 17:50:50 -04:00
parent 590d74525d
commit 2a69f61c88
4 changed files with 526 additions and 7 deletions
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MobileGL/MG_Backend/DirectGLES/DirectGLES.cpp
+12 -6
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@@ -483,7 +483,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
const MG_Pipe::MGPipeHandle handle = MG_Pipe::MGPipeApplier().VerbIndirectBuffer;
if (!MG_Pipe::MGPipeHandleIsNull(handle)) {
auto* resource = BufferImpl::FindBufferResourceForHandle(handle);
const Uint8* const base = resource ? resource->hostBytes : nullptr;
const Uint8* const base = resource ? BufferImpl::SplitHostBytes(*resource) : nullptr;
const SizeT commandOffset = reinterpret_cast<SizeT>(indirect);
if (base == nullptr) {
MGLOG_E_ONCE("%s skipped: the verb's indirect buffer {%u, %u} has no staged "
@@ -1284,6 +1284,9 @@ namespace MobileGL::MG_Backend::DirectGLES {
ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
#endif
ProcessDeferredBufferReleases();
#if MOBILEGL_BUILD_DISAGGREGATED
ProcessDeferredT0Retires(); // P11 B2
#endif
// All buffers we need are:
// 1.VBO 2.IBO (if needed) 3.UBO 4.IndirectBuffer (if needed)
@@ -1531,6 +1534,9 @@ namespace MobileGL::MG_Backend::DirectGLES {
ZoneScopedC(TRACY_ZONECOLOR_BACKEND);
#endif
ProcessDeferredBufferReleases();
#if MOBILEGL_BUILD_DISAGGREGATED
ProcessDeferredT0Retires(); // P11 B2
#endif
// THE COMPUTE PATH IS THE ONE THAT NEEDS THE FRONTEND-INDEXED UNIFORM PASS, and it
// is why the uniform class is emitted at all: compute does NOT go through the
// per-program block remap in BindCurrentProgramWithResources, so these are the
@@ -9215,7 +9221,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
// The staged shadow is the source of truth for CPU reads on this side: a
// persistent map's blocks and a shader write's writeback were consumed by the
// applier before this verb ran.
const Uint8* hostBytes = elementResource ? elementResource->hostBytes : nullptr;
const Uint8* hostBytes = elementResource ? BufferImpl::SplitHostBytes(*elementResource) : nullptr;
if (hostBytes == nullptr) {
MGLOG_E_ONCE("Draw skipped: GL_PRIMITIVE_RESTART with restart index %u needs a CPU-readable copy of "
"the bound element array buffer and none is available.",
@@ -9532,8 +9538,8 @@ namespace MobileGL::MG_Backend::DirectGLES {
auto* drawResource = BufferImpl::FindBufferResourceForHandle(applierState.VerbIndirectBuffer);
auto* paramResource =
BufferImpl::FindBufferResourceForHandle(applierState.VerbIndirectParameterBuffer);
const Uint8* const drawBytes = drawResource ? drawResource->hostBytes : nullptr;
const Uint8* const parameterBytes = paramResource ? paramResource->hostBytes : nullptr;
const Uint8* const drawBytes = drawResource ? BufferImpl::SplitHostBytes(*drawResource) : nullptr;
const Uint8* const parameterBytes = paramResource ? BufferImpl::SplitHostBytes(*paramResource) : nullptr;
if (commandBytes > BufferImpl::ResourceWidthForHandle(applierState.VerbIndirectBuffer)) {
MGLOG_E_ONCE("MultiDrawElementsIndirectCount skipped: invalid GL_DRAW_INDIRECT_BUFFER binding or range");
return;
@@ -9686,8 +9692,8 @@ namespace MobileGL::MG_Backend::DirectGLES {
auto* drawResource = BufferImpl::FindBufferResourceForHandle(applierState.VerbIndirectBuffer);
auto* paramResource =
BufferImpl::FindBufferResourceForHandle(applierState.VerbIndirectParameterBuffer);
const Uint8* const drawBytes = drawResource ? drawResource->hostBytes : nullptr;
const Uint8* const parameterBytes = paramResource ? paramResource->hostBytes : nullptr;
const Uint8* const drawBytes = drawResource ? BufferImpl::SplitHostBytes(*drawResource) : nullptr;
const Uint8* const parameterBytes = paramResource ? BufferImpl::SplitHostBytes(*paramResource) : nullptr;
if (commandBytes > BufferImpl::ResourceWidthForHandle(applierState.VerbIndirectBuffer)) {
MGLOG_E_ONCE("MultiDrawArraysIndirectCount skipped: invalid GL_DRAW_INDIRECT_BUFFER binding or range");
return;