From 6725ea8edd7957c52b957ef4d534fcafd78f3532 Mon Sep 17 00:00:00 2001
From: Robert Mader <robert.mader@collabora.com>
Date: Mon, 12 Jan 2026 11:37:40 +0100
Subject: [PATCH] egl: Print GLES version
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It might come in handy to know whether 2.0 or e.g. 3.2 is used.

Signed-off-by: Robert Mader <robert.mader@collabora.com>
Reviewed-by: Barnabás Pőcze <barnabas.pocze@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Tested-by: Hans de Goede <johannes.goede@oss.qualcomm.com> # Thinkpad X1 Carbon G13 IPU7 ov08x40
Tested-by: Milan Zamazal <mzamazal@redhat.com> # TI AM69
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
---
 include/libcamera/internal/egl.h | 1 +
 src/libcamera/egl.cpp            | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/include/libcamera/internal/egl.h b/include/libcamera/internal/egl.h
index 21e2aa9d..f007f448 100644
--- a/include/libcamera/internal/egl.h
+++ b/include/libcamera/internal/egl.h
@@ -136,5 +136,6 @@ private:
 	PFNGLEGLIMAGETARGETTEXTURE2DOESPROC glEGLImageTargetTexture2DOES;
 	PFNEGLCREATEIMAGEKHRPROC eglCreateImageKHR;
 	PFNEGLDESTROYIMAGEKHRPROC eglDestroyImageKHR;
+	PFNGLGETSTRINGPROC glGetString;
 };
 } //namespace libcamera
diff --git a/src/libcamera/egl.cpp b/src/libcamera/egl.cpp
index a8852527..da563ee0 100644
--- a/src/libcamera/egl.cpp
+++ b/src/libcamera/egl.cpp
@@ -325,6 +325,12 @@ int eGL::initEGLContext(GBM *gbmContext)
 		goto fail;
 	}
 
+	glGetString = (PFNGLGETSTRINGPROC)eglGetProcAddress("glGetString");
+	if (!glGetString) {
+		LOG(eGL, Error) << "glGetString not found";
+		goto fail;
+	}
+
 	if (eglChooseConfig(display_, configAttribs, &config, 1, &numConfigs) != EGL_TRUE) {
 		LOG(eGL, Error) << "eglChooseConfig fail";
 		goto fail;
@@ -340,6 +346,8 @@ int eGL::initEGLContext(GBM *gbmContext)
 
 	makeCurrent();
 
+	LOG(eGL, Info) << "EGL: GL_VERSION: " << glGetString(GL_VERSION);
+
 	return 0;
 fail: