From 0788eab2bf0176901af9c8bbf68c189d7fb44f5d Mon Sep 17 00:00:00 2001
From: twinaphex <libretro@gmail.com>
Date: Mon, 16 Mar 2015 18:40:07 +0100
Subject: [PATCH] (D3D) render_chain.cpp - cleanups

---
 gfx/d3d/render_chain.cpp | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/gfx/d3d/render_chain.cpp b/gfx/d3d/render_chain.cpp
index 4b632e523a..1dd9232a01 100644
--- a/gfx/d3d/render_chain.cpp
+++ b/gfx/d3d/render_chain.cpp
@@ -506,8 +506,13 @@ void renderchain_set_vertices(void *data, Pass *pass,
 
 void renderchain_set_viewport(void *data, D3DVIEWPORT *vp)
 {
+   LPDIRECT3DDEVICE d3dr;
    renderchain_t *chain = (renderchain_t*)data;
-   LPDIRECT3DDEVICE d3dr = (LPDIRECT3DDEVICE)chain->dev;
+
+   if (!chain)
+      return;
+
+   d3dr = (LPDIRECT3DDEVICE)chain->dev;
    d3d_set_viewport(d3dr, vp);
 }
 
@@ -518,6 +523,9 @@ void renderchain_set_mvp(void *data, CGprogram &vPrg,
    D3DXMATRIX proj, ortho, rot, tmp;
    renderchain_t *chain = (renderchain_t*)data;
 
+   if (!chain)
+      return;
+
    D3DXMatrixOrthoOffCenterLH(&ortho, 0, vp_width, 0, vp_height, 0, 1);
 
    if (rotation)
@@ -538,6 +546,9 @@ void renderchain_convert_geometry(void *data, const LinkInfo *info,
 {
    renderchain_t *chain = (renderchain_t*)data;
 
+   if (!chain || !info)
+      return;
+
    switch (info->pass->fbo.type_x)
    {
       case RARCH_SCALE_VIEWPORT:
@@ -592,6 +603,7 @@ void renderchain_render_pass(void *data, Pass *pass, unsigned pass_index)
    unsigned i;
    renderchain_t *chain = (renderchain_t*)data;
    LPDIRECT3DDEVICE d3dr = (LPDIRECT3DDEVICE)chain->dev;
+
    renderchain_set_shaders(chain, pass->fPrg, pass->vPrg);
 
    d3d_set_texture(d3dr, 0, pass->tex);