From ec120d57328e5ae4bfc93a7e809ace47d98f2dc3 Mon Sep 17 00:00:00 2001 From: Tom Englund Date: Fri, 30 Jan 2026 20:42:01 +0100 Subject: opengl: set EGL_CONTEXT_RELEASE_BEHAVIOR_KHR if supported (#13114) EGL_CONTEXT_RELEASE_BEHAVIOR_KHR determines what happends with implicit flushes when context changes, on multigpu scenario we change context frequently when blitting content. while we still rely on explicit sync fences, the flush is destroying driver optimisations. setting it to EGL_CONTEXT_RELEASE_BEHAVIOR_NONE_KHR essentially mean just swap context and continue processing on the next context. --- src/render/OpenGL.cpp | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'src/render/OpenGL.cpp') diff --git a/src/render/OpenGL.cpp b/src/render/OpenGL.cpp index 715ca4f7..b00728ed 100644 --- a/src/render/OpenGL.cpp +++ b/src/render/OpenGL.cpp @@ -160,6 +160,7 @@ void CHyprOpenGLImpl::initEGL(bool gbm) { m_exts.EXT_create_context_robustness = EGLEXTENSIONS.contains("EXT_create_context_robustness"); m_exts.EXT_image_dma_buf_import = EGLEXTENSIONS.contains("EXT_image_dma_buf_import"); m_exts.EXT_image_dma_buf_import_modifiers = EGLEXTENSIONS.contains("EXT_image_dma_buf_import_modifiers"); + m_exts.KHR_context_flush_control = EGLEXTENSIONS.contains("EGL_KHR_context_flush_control"); if (m_exts.IMG_context_priority) { Log::logger->log(Log::DEBUG, "EGL: IMG_context_priority supported, requesting high"); @@ -173,6 +174,12 @@ void CHyprOpenGLImpl::initEGL(bool gbm) { attrs.push_back(EGL_LOSE_CONTEXT_ON_RESET_EXT); } + if (m_exts.KHR_context_flush_control) { + Log::logger->log(Log::DEBUG, "EGL: Using KHR_context_flush_control"); + attrs.push_back(EGL_CONTEXT_RELEASE_BEHAVIOR_KHR); + attrs.push_back(EGL_CONTEXT_RELEASE_BEHAVIOR_NONE_KHR); // or _FLUSH_KHR + } + auto attrsNoVer = attrs; attrs.push_back(EGL_CONTEXT_MAJOR_VERSION); -- cgit v1.2.3