hello Handsome guys, I have a propbem with alphamap in 3DGSA7.
I import a modle in Shader viewer demo of official. But the hair of the modle can't see ,Why we just see the sky? Is any way to Solve the problem？Here is the core of bump.fx .



#include <bump_vs>
#include <phong>

texture entSkin1; // texture
texture entSkin2; // normal map or lightmap
texture entSkin3; // normal map on blocks

sampler sBaseTex = sampler_state { Texture = <entSkin1>; MipFilter = Linear; };
sampler sSkin2 = sampler_state { Texture = <entSkin2>; MipFilter = None; };
sampler sSkin3 = sampler_state { Texture = <entSkin3>; MipFilter = None; };


float3 DoDiffuse(bumpOut In,float3 Normal)
{
float3 Diffuse = In.Diffuse1 * saturate(dot(normalize(In.Light1.xyz),Normal));
Diffuse += In.Diffuse2 * saturate(dot(normalize(In.Light2.xyz),Normal));
Diffuse += In.Diffuse3 * saturate(dot(normalize(In.Light3.xyz),Normal));
return Diffuse * vecDiffuse.xyz;
}

float4 diffuseBump_PS(bumpOut In): COLOR
{
float4 Base = tex2D(sBaseTex,In.Tex12.xy);
float3 Normalmap = tex2D(sSkin2,In.Tex12.xy)*2-1;
float3 Diffuse = DoDiffuse(In,Normalmap);
return Base * DoColor(Diffuse,In.Ambient);
}

float4 diffuseBumpLM_PS(bumpOut In): COLOR
{
float4 Base = tex2D(sBaseTex,In.Tex12.xy);
float4 Lightmap = tex2D(sSkin2,In.Tex12.zw);
float3 Normalmap = tex2D(sSkin3,In.Tex12.xy)*2-1;
float3 Diffuse = DoDiffuse(In,Normalmap);
return Base * DoLightmap(Diffuse,Lightmap,In.Ambient);
}

technique bump
{
pass one
{ ZWriteEnable = True;

VertexShader = compile vs_2_0 bump_VS();
PixelShader = compile ps_2_0 diffuseBump_PS();
}
}

technique bump_lm
{
pass one
{ ZWriteEnable = True;

VertexShader = compile vs_2_0 bump_VS();
PixelShader = compile ps_2_0 diffuseBumpLM_PS();
}
}

technique fallback { pass one { } }

"ZWriteEnable = True;" is the problem. Sort of. The transparent parts are writing to the z-buffer. Since the other parts have greater depth, they are not being rendered, so you see the sky instead.

Usually when one needs gradual alpha transparency, one has those parts in a separate model and shader without ZWriteEnable. This means you might get sorting errors, but at least they'll only be on the transparent model. Alternatively, if you just want to have some parts completely transparent and some completely opaque, you'd also have "AlphaTestEnable = True;" to allow rejection of pixels with low alpha, set "AlphaRef" to a value below which pixels will be rejected, have "AlphaTest = GREATER;" or "GREATEREQUAL" so that we keep pixels whose alpha is higher than AlphaRef, turn off alpha blending with "AlphaBlendEnable = False;" and keep "ZWriteEnable = True;"

Isn´t that the main character of "Bulletstorm"?

Is means like that?
technique bump
{
pass one
{
VertexShader = compile vs_2_0 bump_VS();
PixelShader = compile ps_2_0 diffuseBump_PS();
AlphaBlendEnable = false;

AlphaTestEnable = true;
AlphaFunc = Greater;
AlphaRef = 245;

ZEnable = true;
ZWriteEnable = true;

CullMode = None;

}
}

technique bump_lm
{
pass one
{
VertexShader = compile vs_2_0 bump_VS();
PixelShader = compile ps_2_0 diffuseBumpLM_PS();
AlphaBlendEnable = false;

AlphaTestEnable = true;
AlphaFunc = Greater;
AlphaRef = 245;

ZEnable = true;
ZWriteEnable = true;

CullMode = None;

}
}