diff --git a/include/libcamera/internal/egl.h b/include/libcamera/internal/egl.h
index 8f905416a..c9b3a4e81 100644
--- a/include/libcamera/internal/egl.h
+++ b/include/libcamera/internal/egl.h
@@ -107,6 +107,7 @@ public:
 	int createInputDMABufTexture2D(eGLImage &eglImage, int fd);
 	int createOutputDMABufTexture2D(eGLImage &eglImage, int fd);
 	void createInputTexture2D(eGLImage &eglImage, void *data);
+	void updateInputTexture2D(eGLImage &eglImage, void *data);
 	void createOutputTexture2D(eGLImage &eglImage);
 
 	int attachTextureToFBO(eGLImage &eglImage);
diff --git a/src/libcamera/egl.cpp b/src/libcamera/egl.cpp
index 2fc10b800..fc1516634 100644
--- a/src/libcamera/egl.cpp
+++ b/src/libcamera/egl.cpp
@@ -297,6 +297,33 @@ void eGL::createInputTexture2D(eGLImage &eglImage, void *data)
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 }
 
+void eGL::updateInputTexture2D(eGLImage &eglImage, void *data)
+{
+	GLenum format;
+	GLenum type = GL_UNSIGNED_BYTE;
+
+	ASSERT(tid_ == Thread::currentId());
+
+	glActiveTexture(eglImage.texture_unit_);
+	glBindTexture(GL_TEXTURE_2D, eglImage.texture_);
+
+	switch (eglImage.format_) {
+	case GL_R16F:
+		format = GL_RED;
+		type = GL_HALF_FLOAT;
+		break;
+	case GL_RG8:
+		format = GL_RG;
+		break;
+	case GL_LUMINANCE:
+		format = GL_LUMINANCE;
+		break;
+	}
+
+	// Update an already exsiting texture 
+	glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, eglImage.width_, eglImage.height_, format, type, data);
+}
+
 /**
  * \brief Create a 2D texture attached to an FBO for render-to-texture
  * \param[in,out] eglImage EGL image to associate with the texture