   Looks like NORMAL semantic causes an exception in Visual Studio
  Hello guys, I must have some sort of magnet for this kind of error. I have the following code in my effect:uniform float4x4 w;uniform float4x4 wv;uniform float4x4 wvp;uniform float4x4 wvpToTex;uniform float4 lightPositionsW[4];uniform float4 lightColors[4];uniform float4 lightDirsW[4];uniform int nLights;void VSLighting(float4 iPosition : POSITION,float3 iNormal : NORMAL,float4 iColor : COLOR0,out float4 oPositionWVP : POSITION,out float4 oPositionWVP_TC : TEXCOORD3,out float4 oPositionW : TEXCOORD1,out float3 oNormalWV : TEXCOORD0,out float3 oNormalW : TEXCOORD2,out float4 oColor : COLOR0){oPositionWVP = mul(iPosition, wvp);oPositionWVP_TC = mul(iPosition, wvp);oPositionW = mul(iPosition, w);oNormalWV = mul(iNormal, wv);oNormalW = mul(iNormal, w);oColor = iColor;}void PSLighting(float4 iPositionWVP : POSITION,float4 iPositionWVP_TC : TEXCOORD3,float4 iPositionW : TEXCOORD1,float3 iNormalWV : TEXCOORD0,float3 iNormalW : TEXCOORD2,float4 iColor : COLOR0,out float4 oColorValid : COLOR0,out float4 oPositionW : COLOR1,out float4 oNormalWDist : COLOR2){oColorValid.rgb = iColor.rgb;oColorValid.a = 1.0f;oPositionW = iPositionW / iPositionW.w;oNormalWDist.xyz = normalize(iNormalW);oNormalWDist.w = iPositionWVP_TC.w;}The problem is in the following line in function VSLighting()oNormalW = mul(iNormal, w);Despite w being the identity matrix in my case, when I call DrawIndexedPrimitive() i get the following exceptions:First-chance exception at 0x003b00af in RSGI.exe: 0xC0000005: Access violation reading location 0x00244014.Unhandled exception at 0x003b00af in RSGI.exe: 0xC0000005: Access violation reading location 0x00244014.while, if i change that line inoNormalW = iNormal;everything seems to work fine. Even more weird than this, if I don't use TEXCOORD2 int the pixel shader, everything works fine no matter what the vertex shader looks like; that is, if I change lineoNormalWDist.xyz = normalize(iNormalW);in the pixel shader tooNormalWDist.xyz = 123;everything works fine. If I run the program outside Visual Studio, aparently everything works fine no matter what the VS and PS look like.Now I am in a seaside resort, in a few days I'll go back home and I will have a real computer and a real Internet connection, and obviously I will update DXSDK and maybe drivers and everything, but it would be cool if you can think to some explanation.Thank you very much have a great day.DarioEDIT:I'm working on an Acer Aspire One with Intel GMA 945, DirectX SDK March 2009. All of this is happening with the REF device.EDIT 2:Could it be that I'm exceding the maximum number of instructions allowed for profile 3.0? If yes, why I'm not getting any warning or error, not even if I try to compile with FXC? And why outside of Visual Studio it works (aparently) without raising any exception?[Edited by - damix911 on September 2, 2010 10:38:44 AM]