[WIN32] workaround Intel compressed texture issue

(cherry picked from commit 00452071d88d55e7a5b77f4d6a739b63dd3b89c9)

git-svn-id: https://xbmc.svn.sourceforge.net/svnroot/xbmc/branches/Dharma@33672 568bbfeb-2a22-0410-94d2-cc84cf5bfa90

guilib/Texture.cpp

@@ -53,15 +53,17 @@ void CBaseTexture::Allocate(unsigned int width, unsigned int height, unsigned in
   m_format = format;
   m_orientation = 0;
 
+  m_textureWidth = m_imageWidth;
+  m_textureHeight = m_imageHeight;
+
+  if (m_format & XB_FMT_DXT_MASK)
+    while (GetPitch() < g_Windowing.GetMinDXTPitch())
+      m_textureWidth += GetBlockSize();
+
   if (!g_Windowing.SupportsNPOT((m_format & XB_FMT_DXT_MASK) != 0))
   {
-    m_textureWidth = PadPow2(m_imageWidth);
-    m_textureHeight = PadPow2(m_imageHeight);
-  }
-  else
-  {
-    m_textureWidth = m_imageWidth;
-    m_textureHeight = m_imageHeight;
+    m_textureWidth = PadPow2(m_textureWidth);
+    m_textureHeight = PadPow2(m_textureHeight);
   }
   if (m_format & XB_FMT_DXT_MASK)
   { // DXT textures must be a multiple of 4 in width and height

xbmc/RenderSystem.cpp

@@ -29,6 +29,7 @@ CRenderSystemBase::CRenderSystemBase()
   m_RenderVersionMajor = 0;
   m_RenderVersionMinor = 0;
   m_renderCaps = 0;
+  m_minDXTPitch = 0;
 }
 
 CRenderSystemBase::~CRenderSystemBase()

xbmc/RenderSystem.h

@@ -93,12 +93,14 @@ class CRenderSystemBase
   bool SupportsDXT() const;
   bool SupportsNPOT(bool dxt) const;
   unsigned int GetMaxTextureSize() const { return m_maxTextureSize; }
+  unsigned int GetMinDXTPitch() const { return m_minDXTPitch; }
 
 protected:
   bool                m_bRenderCreated;
   RenderingSystemType m_enumRenderingSystem;
   bool                m_bVSync;
   unsigned int        m_maxTextureSize;
+  unsigned int        m_minDXTPitch;
 
   CStdString   m_RenderRenderer;
   CStdString   m_RenderVendor;

xbmc/RenderSystemDX.cpp

@@ -492,6 +492,20 @@ bool CRenderSystemDX::CreateDevice()
     m_renderCaps &= ~RENDER_CAPS_DXT_NPOT;
   }
 
+  // Intel quirk: DXT texture pitch must be > 64
+  // when using D3DPOOL_DEFAULT + D3DUSAGE_DYNAMIC textures (no other choice with D3D9Ex)
+  // DXT1:   32 pixels wide is the largest non-working texture width
+  // DXT3/5: 16 pixels wide ----------------------------------------
+  // Both equal to a pitch of 64. So far no Intel has DXT NPOT (including i3/i5/i7, so just go with the next higher POT.
+  // See ticket #9578
+//  if(m_defaultD3DUsage == D3DUSAGE_DYNAMIC
+//  && m_defaultD3DPool  == D3DPOOL_DEFAULT
+//  && AIdentifier.VendorId == 32902)
+  {
+    CLog::Log(LOGDEBUG, __FUNCTION__" - Intel workaround - specifying minimum pitch for compressed textures.");
+    m_minDXTPitch = 128;
+  }
+
   D3DDISPLAYMODE mode;
   if (SUCCEEDED(m_pD3DDevice->GetDisplayMode(0, &mode)))
     m_screenHeight = mode.Height;