Shader "Projector/Multiply"
{
Properties
{
_ShadowTex("Cookie", 2D) = "gray" {}
_FalloffTex("FallOff", 2D) = "white" {}
// Добавляем свойство
_MaskTex("Mask", 2D) = "white" {}
}
Subshader
{
Tags {"Queue"="Transparent"}
Pass
{
ZWrite Off
ColorMask RGB
Blend DstColor Zero
Offset -1, -1
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#pragma multi_compile_fog
#include "UnityCG.cginc"
struct v2f
{
float4 uvShadow : TEXCOORD0;
float4 uvFalloff : TEXCOORD1;
UNITY_FOG_COORDS(2)
float4 pos : SV_POSITION;
};
float4x4 unity_Projector;
float4x4 unity_ProjectorClip;
v2f vert (float4 vertex : POSITION)
{
v2f o;
o.pos = UnityObjectToClipPos(vertex);
o.uvShadow = mul(unity_Projector, vertex);
o.uvFalloff = mul(unity_ProjectorClip, vertex);
UNITY_TRANSFER_FOG(o,o.pos);
return o;
}
sampler2D _ShadowTex;
sampler2D _FalloffTex;
// Добавляем переменную, чтобы использовать текстуру внутри прохода
sampler2D _MaskTex;
fixed4 frag (v2f i) : SV_Target
{
fixed4 texS = tex2Dproj(_ShadowTex, UNITY_PROJ_COORD(i.uvShadow));
texS.a = 1.0 - texS.a;
fixed4 texF = tex2Dproj(_FalloffTex, UNITY_PROJ_COORD(i.uvFalloff));
fixed4 res = lerp(fixed4(1, 1, 1, 0), texS, texF.a);
// Сэмплируем текстуру
fixed4 mask = tex2Dproj(_MaskTex, UNITY_PROJ_COORD(i.uvShadow));
// Применяем маску
res *= mask;
UNITY_APPLY_FOG_COLOR(i.fogCoord, res, fixed4(1, 1, 1, 1));
return res;
}
ENDCG
}
}
}fixed4 frag (v2f i) : SV_Target
{
float2 uvShadow = UNITY_PROJ_COORD(i.uvShadow);
float2 uvFalloff = UNITY_PROJ_COORD(i.uvFalloff);
return fixed4(uvShadow, 0.0, 1.0);
//return fixed4(uvFalloff, 0.0, 1.0);
}
program Project1;
{$APPTYPE CONSOLE}
uses
System.SysUtils,
System.Math,
Vcl.Imaging.PNGImage;
type
TRGB = record
r,g,b: single;
end;
TIMG = record
xmax, ymax: integer;
data: array of array of TRGB;
end;
function LoadPNG48(var img: TIMG; const fname: string): boolean;
var
png: TPNGImage;
x,y: integer;
scan,extra: pRGBLine;
begin
png:=TPNGImage.Create;
png.LoadFromFile(fname);
result:=png.Header.BitDepth=16;
if result then begin
img.xmax:=png.Width;
img.ymax:=png.Height;
SetLength(img.data, png.Height, png.Width);
for y:=0 to img.ymax-1 do begin
scan:=png.Scanline[y];
extra:=png.ExtraScanline[y];
for x:=0 to img.xmax-1 do begin
img.data[y,x].r:=(scan[x].rgbtRed shl 8 + extra[x].rgbtRed) / 65535;
img.data[y,x].g:=(scan[x].rgbtGreen shl 8 + extra[x].rgbtGreen) / 65535;
img.data[y,x].b:=(scan[x].rgbtBlue shl 8 + extra[x].rgbtBlue) / 65535;
end;
end;
end;
png.Free;
end;
procedure SavePNG24(var img: TIMG; const fname: string);
var
png: TPNGImage;
x,y: integer;
scan: pRGBLine;
begin
png:=TPNGImage.CreateBlank(COLOR_RGB, 8, img.xmax, img.ymax);
for y:=0 to img.ymax-1 do begin
scan:=png.Scanline[y];
for x:=0 to img.xmax-1 do begin
scan[x].rgbtRed:=round(img.data[y,x].r*255);
scan[x].rgbtGreen:=round(img.data[y,x].g*255);
scan[x].rgbtBlue:=round(img.data[y,x].b*255);
end;
end;
png.SaveToFile(fname);
end;
var
img: TIMG;
x,y: integer;
begin
if LoadPNG48(img, 'test48.png') then begin
for y:=0 to img.ymax-1 do begin
for x:=0 to img.xmax-1 do begin
img.data[y,x].r:=power(img.data[y,x].r, 1 / 2.2);
img.data[y,x].g:=power(img.data[y,x].g, 1 / 2.2);
img.data[y,x].b:=power(img.data[y,x].b, 1 / 2.2);
end;
end;
SavePNG24(img, 'test24.png');
end;
end.
