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[client] egl: snapshot DMA frames before release

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Copy imported IVSHMEM frames into renderer-owned textures before
acknowledging their LGMP messages. Hold each lease until its copy fence
signals, and protect selected snapshots until rendering completes.

Track independent delivery lanes, drain acknowledgements on the frame
thread, and recover stale queue subscriptions after host timeouts.
This commit is contained in:
Geoffrey McRae
2026-08-06 14:47:40 +10:00
parent f6c72b0bc5
commit 05f3b39b43
12 changed files with 824 additions and 227 deletions
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26
client/renderers/EGL/egl.c
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@@ -374,8 +374,13 @@ static void egl_onRestart(LG_Renderer * renderer)
{
struct Inst * this = UPCAST(struct Inst, renderer);
eglDestroyContext(this->display, this->frameContext);
this->frameContext = NULL;
if (this->frameContext)
{
egl_stateCheckShared();
egl_desktopRestart(this->desktop);
eglDestroyContext(this->display, this->frameContext);
this->frameContext = NULL;
}
INTERLOCKED_SECTION(this->desktopDamageLock, {
this->desktopDamage[this->desktopDamageIdx].frameToken =
@@ -746,7 +751,8 @@ static bool egl_onFrameFormat(LG_Renderer * renderer, const LG_RendererFormat fo
static bool egl_onFrame(LG_Renderer * renderer, const FrameBuffer * frame,
int dmaFd, const FrameDamageRect * damageRects, int damageRectsCount,
LG_RendererFrameToken frameToken)
LG_RendererFrameToken frameToken, LG_FrameReleaseFn releaseFn,
void * releaseOpaque, uint64_t releaseHandle)
{
struct Inst * this = UPCAST(struct Inst, renderer);
egl_stateCheckShared();
@@ -755,7 +761,8 @@ static bool egl_onFrame(LG_Renderer * renderer, const FrameBuffer * frame,
uint64_t waitTimeNs = 0;
if (unlikely(!egl_desktopUpdate(
this->desktop, frame, frameToken, dmaFd,
damageRects, damageRectsCount, &waitTimeNs)))
damageRects, damageRectsCount, &waitTimeNs,
releaseFn, releaseOpaque, releaseHandle)))
{
DEBUG_INFO("Failed to to update the desktop");
return false;
@@ -790,6 +797,16 @@ static bool egl_onFrame(LG_Renderer * renderer, const FrameBuffer * frame,
return true;
}
static void egl_onFramePoll(LG_Renderer * renderer)
{
struct Inst * this = UPCAST(struct Inst, renderer);
if (!this->frameContext)
return;
egl_stateCheckShared();
egl_desktopPoll(this->desktop);
}
static void debugCallback(GLenum source, GLenum type, GLuint id,
GLenum severity, GLsizei length, const GLchar * message,
const void * userParam)
@@ -1835,6 +1852,7 @@ struct LG_RendererOps LGR_EGL =
.onMouseEvent = egl_onMouseEvent,
.onFrameFormat = egl_onFrameFormat,
.onFrame = egl_onFrame,
.onFramePoll = egl_onFramePoll,
.renderStartup = egl_renderStartup,
.render = egl_render,
.capture = egl_capture,