MATERIAL mtl_water_mirror
{
effect=
"
//enable: Mirror Fresnel effect
//help: Water transparency depends on view angle
//id: 21
#define MIRROR_FRESNEL
#include <transform>
#include <fog>
#include <pos>
#include <normal>
float4 vecTime;
float4 vecSkill41; // Wind_X, Wind_Y, Ripple, Scale
float4 vecColor;
texture entSkin1;
texture mtlSkin2;
sampler sBumpTex = sampler_state
{
Texture = <entSkin1>;
MipFilter = Linear;
MinFilter = Linear;
MagFilter = Linear;
AddressU = Wrap;
Addressv = Wrap;
};
sampler sMirrorTex = sampler_state
{
Texture = <mtlSkin2>;
MipFilter = Linear;
MinFilter = Linear;
MagFilter = Linear;
AddressU = Clamp;
Addressv = Clamp;
};
struct out_water_mirror // Output to the pixelshader fragment
{
float4 Pos : POSITION;
float4 Color: COLOR0;
float Fog : FOG;
float2 Tex0 : TEXCOORD0;
float2 Tex1 : TEXCOORD1;
};
out_water_mirror vs_water_mirror
(
in float4 inPos : POSITION,
in float3 inNormal : NORMAL,
in float4 inTex0 : TEXCOORD0
)
{
out_water_mirror Out;
Out.Pos = DoTransform(inPos); // transform to screen coordinates
Out.Fog = DoFog(inPos);
// bump and reflection coordinates
Out.Tex0 = (inTex0 + vecSkill41.xy * vecTime.w ) * vecSkill41.w;
Out.Tex1 = 0.5 * (1.0 + (Out.Pos/Out.Pos.w));
// color and transparency
Out.Color = vecColor;
#ifdef MIRROR_FRESNEL
float4 P = DoPos(inPos); // vector world position
float3 N = DoNormal(inNormal); // normal world orientation
float4 vecToView = normalize(vecViewPos-P); // direction towards camera
Out.Color.a = 0.5 + vecColor.a * (1.0 - dot(vecToView,N));
#endif
return Out;
}
#ifdef WONTWORK
float4 ps_mirror_straight(out_water_mirror In): COLOR
{
return tex2D(sMirrorTex,In.Tex1) * In.Color;
}
float4 ps_water_mirror(out_water_mirror In): COLOR
{
float4 Bump = tex2D(sBumpTex,In.Tex0);
float2 Coord = In.Tex1 + Bump.xy * vecSkill41.z;
return tex2D(sMirrorTex,Coord) * In.Color;
}
#endif
//////////////////////////////////////////////////////////////////
technique water_mirror
{
pass one
{
AlphaBlendEnable = True;
sampler[0] = (sBumpTex);
sampler[1] = (sMirrorTex);
VertexShader = compile vs_1_1 vs_water_mirror();
// bump matrix - required for texbem
BumpEnvMat00[1] = (vecSkill41.z);
BumpEnvMat11[1] = (vecSkill41.z);
BumpEnvMat01[1] = 0.0;
BumpEnvMat10[1] = 0.0;
// We need an asm shader here - for some reason,
// ps_1_1 HLSL tex2D won't sample modified coordinates
PixelShader = asm
{
ps_1_1
tex t0 // sample Stage0 Texture rg
texbem t1,t0 // multiply rg with BumpEnvMat to uv,
// and sample Stage1 Texture using uv+t1
mul r0,v0,t1 // multiply Stage1 Texture by Color + Alpha
};
}
}
technique fallback { pass one { } }
";
}
