diff --git a/include/libcamera/internal/egl.h b/include/libcamera/internal/egl.h
index b992baf25..f1fa75d96 100644
--- a/include/libcamera/internal/egl.h
+++ b/include/libcamera/internal/egl.h
@@ -108,6 +108,7 @@ 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 123653b58..6134b05f9 100644
--- a/src/libcamera/egl.cpp
+++ b/src/libcamera/egl.cpp
@@ -345,6 +345,40 @@ bool eGL::isAvailable()
 	return true;
 }
 
+/**
+ * \brief Update a 2D texture already created
+ * \param[in,out] eglImage EGL image to associate with the texture
+ * \param[data] Data to update the texture with
+ *
+ * Updates a 2D texture in VRAM.
+ */
+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
diff --git a/src/libcamera/software_isp/debayer_egl.cpp b/src/libcamera/software_isp/debayer_egl.cpp
index 0ec2a98cf..cdceacf96 100644
--- a/src/libcamera/software_isp/debayer_egl.cpp
+++ b/src/libcamera/software_isp/debayer_egl.cpp
@@ -536,7 +536,7 @@ int DebayerEGL::debayerGPU(FrameBuffer *input, FrameBuffer *output, const Debaye
 			LOG(Debayer, Error) << "mmap-ing buffer(s) failed";
 			return -ENODEV;
 		}
-		egl_.createTexture2D(*eglImageBayerIn_, inMapped->value().planes()[0].data());
+		egl_.createInputTexture2D(*eglImageBayerIn_, inMapped->value().planes()[0].data());
 	}
 
 	/* Generate the output render framebuffer as render to texture */