From 282b386e6fb36e2fa6b572ffb8d0595d57f47dbd Mon Sep 17 00:00:00 2001
From: Anselme <anselme.francois@gmail.com>
Date: Fri, 25 Aug 2017 19:30:11 +0200
Subject: [PATCH] more verifications to force stencil good behaviour (bad boy)

---
 src/deferredpipeline.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/deferredpipeline.cpp b/src/deferredpipeline.cpp
index 5f07f7f..cee38e9 100644
--- a/src/deferredpipeline.cpp
+++ b/src/deferredpipeline.cpp
@@ -148,13 +148,15 @@ void DeferredPipeline::renderGL(Scene *scene)
     glClearColor(0.0f, 0.0f, 0.0f, 1.f);
     glClearDepth(1.0f);
     glClearStencil(0);
+    glStencilMask(0xFF);
+    glDisable(GL_SCISSOR_TEST);
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
     glStencilMask(0x01);
     glStencilFunc(GL_ALWAYS, 0x01, 0x01); // always draw fragments (ignore the stencil buffer values for now)
     // draw skybox
     if(m_skybox != nullptr)
     {
-        glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
+        glStencilOp(GL_ZERO, GL_ZERO, GL_ZERO);
         m_skybox->renderGL(m_camera);
         glClear(GL_DEPTH_BUFFER_BIT);
     }
@@ -204,12 +206,12 @@ void DeferredPipeline::renderGL(Scene *scene)
     {
         shader->bind();
         shader->bindInteger(shader->getLocation("emissionBuffer"), GBuffer::EMISSION);
-        glStencilFunc(GL_EQUAL, 1, 0x01);
+        glStencilFunc(GL_EQUAL, 0, 0x01);
         SparrowRenderer::drawQuad();
     }
 
     // loop on light sources
-    glStencilFunc(GL_EQUAL, 0, 0x01);
+    glStencilFunc(GL_EQUAL, 0x01, 0x01);
     for(SceneIterator<Light*>* lightIt = scene->getLights();
         lightIt->isValid(); lightIt->next())
     {