gl, rpi: consolidate print_egl_error_state()

Rename print_egl_error_state() to gl_renderer_print_egl_error_state()
and exports it.

Remove the copy of that function from the rpi backend, and call
the exported function instead.

Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>

src/compositor-rpi.c

@@ -193,42 +193,6 @@ to_rpi_compositor(struct weston_compositor *base)
 	return container_of(base, struct rpi_compositor, base);
 }
 
-static const char *
-egl_error_string(EGLint code)
-{
-#define MYERRCODE(x) case x: return #x;
-	switch (code) {
-	MYERRCODE(EGL_SUCCESS)
-	MYERRCODE(EGL_NOT_INITIALIZED)
-	MYERRCODE(EGL_BAD_ACCESS)
-	MYERRCODE(EGL_BAD_ALLOC)
-	MYERRCODE(EGL_BAD_ATTRIBUTE)
-	MYERRCODE(EGL_BAD_CONTEXT)
-	MYERRCODE(EGL_BAD_CONFIG)
-	MYERRCODE(EGL_BAD_CURRENT_SURFACE)
-	MYERRCODE(EGL_BAD_DISPLAY)
-	MYERRCODE(EGL_BAD_SURFACE)
-	MYERRCODE(EGL_BAD_MATCH)
-	MYERRCODE(EGL_BAD_PARAMETER)
-	MYERRCODE(EGL_BAD_NATIVE_PIXMAP)
-	MYERRCODE(EGL_BAD_NATIVE_WINDOW)
-	MYERRCODE(EGL_CONTEXT_LOST)
-	default:
-		return "unknown";
-	}
-#undef MYERRCODE
-}
-
-static void
-print_egl_error_state(void)
-{
-	EGLint code;
-
-	code = eglGetError();
-	weston_log("EGL error state: %s (0x%04lx)\n",
-		   egl_error_string(code), (long)code);
-}
-
 static inline int
 int_max(int a, int b)
 {
@@ -1095,10 +1059,10 @@ rpi_output_create(struct rpi_compositor *compositor)
 		goto out_output;
 
 	if (!eglSurfaceAttrib(gl_renderer_display(&compositor->base),
-			     gl_renderer_output_surface(&output->base),
+			      gl_renderer_output_surface(&output->base),
 			      EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED)) {
-		print_egl_error_state();
 		weston_log("Failed to set swap behaviour to preserved.\n");
+		gl_renderer_print_egl_error_state();
 		goto out_gl;
 	}
 

src/gl-renderer.c

@@ -146,8 +146,8 @@ egl_error_string(EGLint code)
 #undef MYERRCODE
 }
 
-static void
+WL_EXPORT void
-print_egl_error_state(void)
+gl_renderer_print_egl_error_state(void)
 {
 	EGLint code;
 
@@ -683,7 +683,7 @@ use_output(struct weston_output *output)
 			return -1;
 		errored = 1;
 		weston_log("Failed to make EGL context current.\n");
-		print_egl_error_state();
+		gl_renderer_print_egl_error_state();
 		return -1;
 	}
 
@@ -985,7 +985,7 @@ gl_renderer_repaint_output(struct weston_output *output,
 	if (ret == EGL_FALSE && !errored) {
 		errored = 1;
 		weston_log("Failed in eglSwapBuffers.\n");
-		print_egl_error_state();
+		gl_renderer_print_egl_error_state();
 	}
 
 	go->current_buffer ^= 1;
@@ -1732,7 +1732,7 @@ gl_renderer_create(struct weston_compositor *ec, EGLNativeDisplayType display,
 	return 0;
 
 err_egl:
-	print_egl_error_state();
+	gl_renderer_print_egl_error_state();
 	free(gr);
 	return -1;
 }
@@ -1812,7 +1812,7 @@ gl_renderer_setup(struct weston_compositor *ec, EGLSurface egl_surface)
 
 	if (!eglBindAPI(EGL_OPENGL_ES_API)) {
 		weston_log("failed to bind EGL_OPENGL_ES_API\n");
-		print_egl_error_state();
+		gl_renderer_print_egl_error_state();
 		return -1;
 	}
 
@@ -1822,7 +1822,7 @@ gl_renderer_setup(struct weston_compositor *ec, EGLSurface egl_surface)
 					   EGL_NO_CONTEXT, context_attribs);
 	if (gr->egl_context == NULL) {
 		weston_log("failed to create context\n");
-		print_egl_error_state();
+		gl_renderer_print_egl_error_state();
 		return -1;
 	}
 
@@ -1830,7 +1830,7 @@ gl_renderer_setup(struct weston_compositor *ec, EGLSurface egl_surface)
 			     egl_surface, gr->egl_context);
 	if (ret == EGL_FALSE) {
 		weston_log("Failed to make EGL context current.\n");
-		print_egl_error_state();
+		gl_renderer_print_egl_error_state();
 		return -1;
 	}
 

src/gl-renderer.h

@@ -44,3 +44,6 @@ gl_renderer_set_border(struct weston_compositor *ec, int32_t width, int32_t heig
 			  int32_t *edges);
 void
 gl_renderer_destroy(struct weston_compositor *ec);
+
+void
+gl_renderer_print_egl_error_state(void);