Problem with compile shader from file

Graphics and GPU Programming Programming

Started by Arkanoid March 12, 2012 03:21 PM

37 comments, last by Asesh 12 years ago

785

March 21, 2012 07:28 PM

i tried maybe all...rad SDK and i don't know how to chek it , can you plz tell me where i can see it?

P.S. If you sure where is the problem - can you simply say how to fix it?

You need to double check that you're uploading a proper world/view/projection matrix in your c++ code to your [color="#000000"]worldViewProj that is in your shader.

Arkanoid

109

Author

March 22, 2012 01:50 PM

Yes i found a mistake! Thanks very much for help!

Arkanoid

109

Author

March 22, 2012 03:14 PM

but how i can give my shader other variables? like this:

float4x4 matWorld; 

float4 vec_light;

for worldViewProj i have special function: g_pConstantTableVS->SetMatrix
but have can i set other vectors or matrixes? Or they just need to have same name?

Asesh

276

March 22, 2012 04:04 PM

you are free to declare more variables and update those variables from external source

Arkanoid

109

Author

March 23, 2012 07:39 PM

well for example:

float4x4 matWorldViewProj;

float4x4 matWorld;

float4 vecLightDir;



struct VS_OUTPUT

{

float4 Pos : POSITION;

float3 Light : TEXCOORD0;

float3 Norm : TEXCOORD1;

};



VS_OUTPUT VS(float4 Pos : POSITION, float3 Normal : NORMAL)

{

VS_OUTPUT Out = (VS_OUTPUT)0;

Out.Pos = mul(Pos, matWorldViewProj); // transform Position

Out.Light = vecLightDir; // output light vector

Out.Norm = normalize(mul(Normal, matWorld)); // transform Normal and normalize it

return Out;

}

this shader code need texture coordinates, but when i use PIX - i see that all textures positions are 0. I update all variables in render:





for(int b =1;b<MeshCount+1;b++)

{

for( DWORD i = 0; i < g_dwNumMaterials; i++ )

{

g_bUseShaders = true;



if( g_bUseShaders == true )

{

//

// Use vertex and pixel shaders...

//

g_pd3dDevice->SetMaterial( &entity.g_pMeshMaterials );

g_pd3dDevice->SetTexture( 0,entity.g_pMeshTextures[1] );

g_pd3dDevice->SetTexture( 1,entity.g_pMeshTextures[2] );





D3DXVECTOR3 vecLightDir(10,10,10);

D3DXMATRIX matWorldViewProj = matWorld * matView *matProj;

g_pConstantTableVS->SetMatrix( g_pd3dDevice, " matWorldViewProj", &matWorldViewProj );



g_pd3dDevice->SetVertexDeclaration( g_pVertexDeclaration );

g_pd3dDevice->SetVertexShader( g_pVertexShader );





g_pd3dDevice->SetPixelShader( g_pPixelShader );







g_pMesh->DrawSubset( i );

}

i update all, why shader cannot see coordinates?

Dancin_Fool

785

March 23, 2012 07:50 PM

First off, you aren't uploading your world matrix or your light direction, you're only uploading your matWorldViewProj.

Secondly, does the geometry have UV coordinates?

I think you need to take a step back and review what you have so far, and understand what everything is doing.

Arkanoid

109

Author

March 24, 2012 07:32 PM

I find all information that i need to, now shaders are working good. But there is the last thing that i cannot understand, i don't want start new topic, so : how to add to my mesh more then 1 textures?Mesh have 1 diffuse map, but in shader i need second texture for bump mapping, where can i add it to my mesh? For example in 3dsMax? Or where? Can i load it in code?

Asesh

276

March 25, 2012 12:48 PM

Use NVIDIA texture tools: http://developer.nvidia.com/nvidia-texture-tools-adobe-photoshop to generate a normal map of your mesh's texture and modify your shader to add support for normal mapping