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[client] egl: avoid per-frame DMABUF flushes

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Only fence and flush when initially attaching an EGLImage. Subsequent
imports rely on framebuffer write completion, avoiding periodic driver
stalls.
This commit is contained in:
Geoffrey McRae
2026-07-17 23:39:13 +10:00
parent c4285dcb6e
commit 21b978e1df
1 changed files with 15 additions and 15 deletions
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30
client/renderers/EGL/texture_dmabuf.c
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@@ -247,6 +247,7 @@ static bool egl_texDMABUFUpdate(EGL_Texture * texture,
int slot = (fdImage == &this->images[0]) ? 0 : 1; int slot = (fdImage == &this->images[0]) ? 0 : 1;
fdImage->texIndex = slot; fdImage->texIndex = slot;
GLsync sync = 0;
INTERLOCKED_SECTION(parent->copyLock, INTERLOCKED_SECTION(parent->copyLock,
{ {
egl_stateBindTexture(0, GL_TEXTURE_EXTERNAL_OES, parent->tex[slot]); egl_stateBindTexture(0, GL_TEXTURE_EXTERNAL_OES, parent->tex[slot]);
@@ -256,29 +257,28 @@ static bool egl_texDMABUFUpdate(EGL_Texture * texture,
glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
g_egl_dynProcs.glEGLImageTargetTexture2DOES( g_egl_dynProcs.glEGLImageTargetTexture2DOES(
GL_TEXTURE_EXTERNAL_OES, image); GL_TEXTURE_EXTERNAL_OES, image);
sync = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
fdImage->sync = sync;
}); });
if (unlikely(!sync))
{
DEBUG_GL_ERROR("Failed to create DMABUF sync");
return false;
}
/* Publish the texture attachment to the shared render context once. The
* backing memory is synchronized separately by framebuffer_wait(), so
* subsequent frames do not add any GL commands to this context. */
glFlush();
} }
GLsync sync = 0;
INTERLOCKED_SECTION(parent->copyLock, INTERLOCKED_SECTION(parent->copyLock,
{ {
if (fdImage->sync)
glDeleteSync(fdImage->sync);
sync = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
fdImage->sync = sync;
this->lastIndex = (fdImage == &this->images[0]) ? 0 : 1; this->lastIndex = (fdImage == &this->images[0]) ? 0 : 1;
}); });
if (unlikely(!sync))
{
DEBUG_GL_ERROR("Failed to create DMABUF sync");
return false;
}
/* The fence is consumed by the shared render context. Submit it from the
* frame context now so the render context can wait without blocking the CPU. */
glFlush();
return true; return true;
} }