cmontiel
Member
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Shader based on "Test Blend Light"
I am trying to fade in my characters when they enter in scene. "Test Blend Light" technique would be perfect but I am using material ambient color in some materials and this tech doesn't take into account.
I've created a custom shader but I'm not able to return the same final color:
Code:
BUFFER(CustBuffer) //Maybe they should be declared as uniform?
Vec GlobalAmbient;
Vec LightDirection;
Vec LightColor;
BUFFER_END
/******************************************************************************/
// VERTEX SHADER
/******************************************************************************/
void VS
(
// vertex input
VtxInput vtx,
// output
out Vec2 outTex:TEXCOORD0,
out Flt outLum:TEXCOORD1,
out Vec4 outVtx:POSITION
)
{
VecI2 bone =vtx.bone();
Vec view_space_pos= TransformPos(vtx.pos4(), bone, vtx.weight());
Vec view_space_nrm=Normalize(TransformDir(vtx.nrm (), bone, vtx.weight()));
outTex=vtx.tex();
outLum=Dot(LightDirection, view_space_nrm);
outVtx=Project(view_space_pos);
}
/******************************************************************************/
// PIXEL SHADER
/******************************************************************************/
Vec4 PS
(
Vec2 DiffuseTex:TEXCOORD0,
Flt inLum:TEXCOORD1
):COLOR
{
Flt intensity = Sat(inLum);
// Whitout a light in scene this works !
Vec color = Tex(Col, DiffuseTex ).rgb * MaterialColor().rgb * (GlobalAmbient + MaterialAmbient());
// But my scenes have one directional light.
color = >>>>> color (+?) (*?) something with LightColor and intensity <<<<<<
return Vec4(color,MaterialColor().a);
}
/******************************************************************************/
// TECHNIQUE
/******************************************************************************/
TECHNIQUE(Main, VS(), PS());
/******************************************************************************/
@Esenthel , Can you say how the final color "Test Blend Light" is calculated. I would be interesting if you can say how to apply alpha testing + depth writing too.
IRC: irc.freenode.net
Channel: #Esenthel
(This post was last modified: 02-14-2013 04:22 AM by cmontiel.)
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| 02-14-2013 04:21 AM |
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Esenthel
Administrator
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RE: Shader based on "Test Blend Light"
try:
*(GlobalAmbient + MaterialAmbient() + intensity*LightColor)
alpha testing:
Vec4 tex_col=Tex(Col, IO_tex);
if(tex_col.a<0.5)discard;
depth writing should automatically work when you have material technique set to one of "test blend light" values
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| 02-19-2013 01:14 PM |
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