From 5c00f1abe1456508d065b2d6279c0566c6f98fdd Mon Sep 17 00:00:00 2001
From: water111 <48171810+water111@users.noreply.github.com>
Date: Wed, 16 Aug 2023 20:42:52 -0400
Subject: [PATCH] [jak2] fix glow sprite flickering (#2912)

oops, forgot to set `glDepthMask`, so sometimes it was enabled, and the
drawing for the clear was writing into the depth buffer.
Fixes https://github.com/open-goal/jak-project/issues/2735
---
 game/graphics/opengl_renderer/sprite/GlowRenderer.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/game/graphics/opengl_renderer/sprite/GlowRenderer.cpp b/game/graphics/opengl_renderer/sprite/GlowRenderer.cpp
index 8bb0675d72..589e2c28ea 100644
--- a/game/graphics/opengl_renderer/sprite/GlowRenderer.cpp
+++ b/game/graphics/opengl_renderer/sprite/GlowRenderer.cpp
@@ -539,6 +539,8 @@ void GlowRenderer::draw_probes(SharedRenderState* render_state,
   glBindVertexArray(m_ogl.vao);
   glEnable(GL_PRIMITIVE_RESTART);
   glPrimitiveRestartIndex(UINT32_MAX);
+  // don't want to write to the depth buffer we just copied, just test against it.
+  glDepthMask(GL_FALSE);
   GLint old_viewport[4];
   glGetIntegerv(GL_VIEWPORT, old_viewport);
   glViewport(0, 0, m_ogl.probe_fbo_w, m_ogl.probe_fbo_h);