Hello.
I'm trying to use effects for the first time, after some reasonable success with vertex and pixel shaders outside effects.
When I switch to shaders, my terrain appears drawn and lit correctly, but untextured. It is correctly textured in the Fixed pipeline
I have set my active texture to sampler 0 i think..... what am I missing?
Also for some reason, the rendering REALLY slows using the effect. I didnt have this trouble with shaders!
HRESULT cTerrain::CreateShaders( void )
{
HRESULT hr;
LPD3DXBUFFER pShader = NULL;
hr = D3DXCreateEffectFromFile(
g_device,
L"data\\shaders\\simpleFX.fx",
NULL, // NULL terminated list of D3DXMACRos
NULL, // #include handler
D3DXSHADER_DEBUG,
NULL, // memory pool
&m_effect,
NULL);
if(FAILED(hr))
{
SAFE_RELEASE(m_effect);
return hr;
}
D3DXHANDLE hTech = m_effect->GetTechniqueByName("tVertexAndPixelShader");
hr = m_effect->ValidateTechnique(hTech);
if(FAILED(hr))
{
return hr;
}
return S_OK;
}
bool cTerrain::Render()
{
D3DXMATRIX I;
D3DXMatrixIdentity(&I);
g_device->SetTexture(0, m_backgroundTexture );
// g_device->SetTexture(1, m_detailTexture );
HRESULT hr;
if( m_effect && g_useShaders )
{
m_effect->SetMatrix("World", &I);
m_effect->SetMatrix("View", g_camera->GetViewMatrixPtr() );
m_effect->SetMatrix("Projection", g_simulation->GetProjMatrixPtr() );
m_effect->SetTechnique("tVertexAndPixelShader");
UINT numPasses;//, iPass;
hr = m_effect->Begin( &numPasses, 0 );
// for( iPass = 0; iPass < numPasses; iPass ++ )
hr = m_effect->BeginPass( 0 );
for ( unsigned int i = 0; i < m_visibleLeafList.size(); i++)
m_visibleLeafList.at( i )->Render();
m_effect->EndPass();
m_effect->End();
}
else
{
g_device->SetTransform( D3DTS_WORLD, &I );
for ( unsigned int i = 0; i < m_visibleLeafList.size(); i++)
m_visibleLeafList.at( i )->Render();
}
return true;
}
Heres the shader... from a SDK sample.
// Light direction (view space)
static float3 LightDir < string UIDirectional = "Light Direction"; > =
normalize(float3(-1,0,1));
// Light intensity
float4 I_a = { 0.1f, 0.1f, 0.1f, 1.0f }; // ambient
float4 I_d = { 1.0f, 1.0f, 1.0f, 1.0f }; // diffuse
//float4 I_s = { 1.0f, 1.0f, 1.0f, 1.0f }; // specular
// Material reflectivity
float4 k_a : MATERIALAMBIENT = { 1.0f, 1.0f, 1.0f, 1.0f }; // ambient
float4 k_d : MATERIALDIFFUSE = { 1.0f, 1.0f, 1.0f, 1.0f }; // diffuse
//float4 k_s : MATERIALSPECULAR= { 1.0f, 1.0f, 1.0f, 1.0f }; // specular
//int n : MATERIALPOWER = 32; // power
// Texture
texture Tex0 < string name = "G:\Game Programming\C\_Dev\Client 20060117\terrain\myTerrain\data\texture.tga"; >;
// Transformations
float4x4 World : WORLD;
float4x4 View : VIEW;
float4x4 Projection : PROJECTION;
struct VS_OUTPUT
{
float4 Pos : POSITION;
float4 Diff : COLOR0;
//float4 Spec : COLOR1;
float2 Tex : TEXCOORD0;
};
VS_OUTPUT VS(
float3 Pos : POSITION,
float3 Norm : NORMAL,
float2 Tex : TEXCOORD0)
{
VS_OUTPUT Out = (VS_OUTPUT)0;
float3 L = -LightDir;
float4x4 WorldView = mul(World, View);
float3 P = mul(float4(Pos, 1), (float4x3)WorldView); // position (view space)
float3 N = normalize(mul(Norm, (float3x3)WorldView)); // normal (view space)
// float3 R = normalize(2 * dot(N, L) * N - L); // reflection vector (view space)
// float3 V = -normalize(P); // view direction (view space)
Out.Pos = mul(float4(P, 1), Projection); // position (projected)
Out.Diff = I_a * k_a + I_d * k_d * max(0, dot(N, L)); // diffuse + ambient
//Out.Spec = I_s * k_s * pow(max(0, dot(R, V)), n/4); // specular
Out.Tex = Tex;
return Out;
}
sampler Sampler = sampler_state
{
Texture = (Tex0);
MipFilter = LINEAR;
MinFilter = LINEAR;
MagFilter = LINEAR;
};
float4 PS(
float4 Diff : COLOR0,
//float4 Spec : COLOR1,
float2 Tex : TEXCOORD0) : COLOR
{
return tex2D(Sampler, Tex) * Diff;// + Spec;
}
technique tVertexAndPixelShader
{
pass P0
{
CullMode = None;
// Shaders
VertexShader = compile vs_1_1 VS();
PixelShader = compile ps_1_1 PS();
}
}
Thanks for your advice
Si
