1 files changed, 2 insertions, 0 deletions
diff --git a/graphics.c b/graphics.c
index b223daa..2850d3b 100644
--- a/graphics.c
+++ b/graphics.c
@@ -173,7 +173,9 @@ void render_frame(client_state *state) {
 	glViewport(0, 0, state->width, state->height);
 	glScissor(0, 0, state->width, state->height);
 	glClearColor(background_color.r,background_color.g,background_color.b,background_color.a);
+	glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); // allow alpha channel set by background
 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+	glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_FALSE); // don't allow alpha channel to be set after
 
 	// bind shader and texture
 	glUseProgram(state->text_shader);