From 0dc261813a65f85ba10a4c9f5db64d8e3a6816e0 Mon Sep 17 00:00:00 2001
From: Logan McNaughton <logan@bacoosta.com>
Date: Tue, 28 Feb 2017 12:11:06 -0700
Subject: [PATCH] Hacky fix for RPi depth issues

---
 src/Graphics/OpenGLContext/opengl_ContextImpl.cpp | 5 +++++
 src/Graphics/OpenGLContext/opengl_GLInfo.cpp      | 2 ++
 src/Graphics/OpenGLContext/opengl_GLInfo.h        | 1 +
 3 files changed, 8 insertions(+)

diff --git a/src/Graphics/OpenGLContext/opengl_ContextImpl.cpp b/src/Graphics/OpenGLContext/opengl_ContextImpl.cpp
index 6606d470..8da95676 100644
--- a/src/Graphics/OpenGLContext/opengl_ContextImpl.cpp
+++ b/src/Graphics/OpenGLContext/opengl_ContextImpl.cpp
@@ -261,6 +261,11 @@ void ContextImpl::deleteFramebuffer(graphics::ObjectHandle _name)
 
 void ContextImpl::bindFramebuffer(graphics::BufferTargetParam _target, graphics::ObjectHandle _name)
 {
+	if (m_glInfo.renderer == Renderer::VideoCore) {
+		CachedDepthMask * depthMask = m_cachedFunctions->getCachedDepthMask();
+		depthMask->setDepthMask(true);
+		glClear(GL_DEPTH_BUFFER_BIT);
+	}
 	m_cachedFunctions->getCachedBindFramebuffer()->bind(_target, _name);
 }
 
diff --git a/src/Graphics/OpenGLContext/opengl_GLInfo.cpp b/src/Graphics/OpenGLContext/opengl_GLInfo.cpp
index b23272c8..42074956 100644
--- a/src/Graphics/OpenGLContext/opengl_GLInfo.cpp
+++ b/src/Graphics/OpenGLContext/opengl_GLInfo.cpp
@@ -27,6 +27,8 @@ void GLInfo::init() {
 	const GLubyte * strRenderer = glGetString(GL_RENDERER);
 	if (strstr((const char*)strRenderer, "Adreno") != nullptr)
 		renderer = Renderer::Adreno;
+	else if (strstr((const char*)strRenderer, "VideoCore IV") != nullptr)
+		renderer = Renderer::VideoCore;
 	LOG(LOG_VERBOSE, "OpenGL renderer: %s\n", strRenderer);
 
 	int numericVersion = majorVersion * 10 + minorVersion;
diff --git a/src/Graphics/OpenGLContext/opengl_GLInfo.h b/src/Graphics/OpenGLContext/opengl_GLInfo.h
index 3110388d..2d7a79d2 100644
--- a/src/Graphics/OpenGLContext/opengl_GLInfo.h
+++ b/src/Graphics/OpenGLContext/opengl_GLInfo.h
@@ -5,6 +5,7 @@ namespace opengl {
 
 enum class Renderer {
 	Adreno,
+	VideoCore,
 	Other
 };