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[client] egl: remove blocking waits from frame submission

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Track PBO fences per upload slot and wait only when a slot is reused,
allowing rendering to proceed without a CPU stall. Use GPU-side waits
for cross-context DMABUF synchronization.

Also propagate KVMFR write-completion failures so incomplete
shared-memory frames are never submitted, while retaining incremental
damage-copy waits to avoid added latency.
This commit is contained in:
Geoffrey McRae
2026-07-17 22:02:05 +10:00
parent e3616ed4b9
commit b2c40a80af
7 changed files with 161 additions and 101 deletions
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20
client/renderers/EGL/texture_framebuffer.c
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@@ -85,15 +85,17 @@ static bool egl_texFBUpdate(EGL_Texture * texture, const EGL_TexUpdate * update)
DEBUG_ASSERT(update->type == EGL_TEXTYPE_FRAMEBUFFER);
LG_LOCK(parent->copyLock);
if (!egl_texBufferStreamLock(parent))
return false;
struct TexDamage * damage = this->damage + parent->bufIndex;
bool damageAll = !update->rects || update->rectCount == 0 || damage->count < 0 ||
damage->count + update->rectCount > KVMFR_MAX_DAMAGE_RECTS;
bool complete;
if (damageAll)
{
framebuffer_read(
complete = framebuffer_read(
update->frame,
parent->buf[parent->bufIndex].map,
texture->format.pitch,
@@ -122,7 +124,7 @@ static bool egl_texFBUpdate(EGL_Texture * texture, const EGL_TexUpdate * update)
scaledDamageRects[i] = rect;
}
rectsFramebufferToBuffer(
complete = rectsFramebufferToBuffer(
scaledDamageRects,
damage->count,
texture->format.bpp,
@@ -135,7 +137,7 @@ static bool egl_texFBUpdate(EGL_Texture * texture, const EGL_TexUpdate * update)
}
else
{
rectsFramebufferToBuffer(
complete = rectsFramebufferToBuffer(
damage->rects,
damage->count,
texture->format.bpp,
@@ -148,6 +150,16 @@ static bool egl_texFBUpdate(EGL_Texture * texture, const EGL_TexUpdate * update)
}
}
if (unlikely(!complete))
{
/* The mapped PBO may contain a partial copy. Force a full refresh if the
* caller recovers, and never expose this slot to the render context. */
damage->count = -1;
parent->buf[parent->bufIndex].updated = false;
LG_UNLOCK(parent->copyLock);
return false;
}
parent->buf[parent->bufIndex].updated = true;
for (int i = 0; i < EGL_TEX_BUFFER_MAX; ++i)