我有以下 CgFx 文件:
struct VertIn {
float4 pos : POSITION;
float4 color : COLOR0;
};
struct VertOut {
float4 pos : POSITION;
float4 color : COLOR0;
};
VertOut vert(VertIn IN) {
VertOut OUT;
OUT.pos = IN.pos;
OUT.color = IN.color;
OUT.color.z = 0.0f;
return OUT;
}
struct FragIn {
float4 color: COLOR;
};
struct FragOut {
float4 color : COLOR;
};
FragOut frag(FragIn IN) {
FragOut OUT;
OUT.color = IN.color;
OUT.color.y = 0.0f;
return OUT;
}
struct GeomIn {
float4 position : POSITION;
float4 color : COLOR0;
};
TRIANGLE void geom(AttribArray<GeomIn> IN) {
for(int i=0; i<IN.length; i++) {
emitVertex(IN[i]);
}
}
technique technique0 {
pass p0 {
VertexShader = compile gp4vp vert(); //line 47
FragmentShader = compile gp4fp frag(); //line 48
GeometryShader = compile gp4gp geom(); //line 49
}
}
使用 cgc 验证 3 个着色器时,它们都可以正常编译。
但是当我尝试使用以下方法编译整个效果时:
context=cgCreateContext();
effect=cgCreateEffectFromFile(context, "my_shader.cgfx", NULL);
if(!effect) {
printf(ygl.cgGetLastErrorString(NULL));
printf(cgGetLastListing(context));
}
然后我收到以下错误:
CG ERROR : The compile returned an error.
my_shader.cgfx(47) : error C8001: Unknown state 'VertexShader'
my_shader.cgfx(48) : error C8001: Unknown state 'FragmentShader'
my_shader.cgfx(49) : error C8001: Unknown state 'GeometryShader'
我做错了什么?