您最多选择25个主题
主题必须以中文或者字母或数字开头，可以包含连字符 (-)，并且长度不得超过35个字符
107 行
2.9 KiB
107 行
2.9 KiB
#ifndef SHADERPASS
|
|
#error Undefine_SHADERPASS
|
|
#endif
|
|
|
|
// Check if Alpha test is enabled. If it is, check if parallax is enabled on this material
|
|
#define NEED_TEXCOORD0 defined(_ALPHATEST_ON)
|
|
#define NEED_TANGENT_TO_WORLD NEED_TEXCOORD0 && (defined(_HEIGHTMAP) && !defined(_HEIGHTMAP_AS_DISPLACEMENT))
|
|
|
|
struct Attributes
|
|
{
|
|
float3 positionOS : POSITION;
|
|
#if NEED_TEXCOORD0
|
|
float2 uv0 : TEXCOORD0;
|
|
#endif
|
|
#if NEED_TANGENT_TO_WORLD
|
|
float4 tangentOS : TANGENT;
|
|
#endif
|
|
};
|
|
|
|
struct Varyings
|
|
{
|
|
float4 positionCS;
|
|
#if NEED_TEXCOORD0
|
|
float2 texCoord0;
|
|
#endif
|
|
#if NEED_TANGENT_TO_WORLD
|
|
float3 positionWS;
|
|
float3 tangentToWorld[3];
|
|
#endif
|
|
};
|
|
|
|
struct PackedVaryings
|
|
{
|
|
float4 positionCS : SV_Position;
|
|
#if NEED_TANGENT_TO_WORLD
|
|
float4 interpolators[4] : TEXCOORD0;
|
|
#elif NEED_TEXCOORD0
|
|
float4 interpolators[1] : TEXCOORD0;
|
|
#endif
|
|
};
|
|
|
|
// Function to pack data to use as few interpolator as possible, the ShaderGraph should generate these functions
|
|
PackedVaryings PackVaryings(Varyings input)
|
|
{
|
|
PackedVaryings output;
|
|
output.positionCS = input.positionCS;
|
|
#if NEED_TANGENT_TO_WORLD
|
|
output.interpolators[0].xyz = input.positionWS.xyz;
|
|
output.interpolators[1].xyz = input.tangentToWorld[0];
|
|
output.interpolators[2].xyz = input.tangentToWorld[1];
|
|
output.interpolators[3].xyz = input.tangentToWorld[2];
|
|
|
|
output.interpolators[0].w = input.texCoord0.x;
|
|
output.interpolators[1].w = input.texCoord0.y;
|
|
#elif NEED_TEXCOORD0
|
|
output.interpolators[0] = float4(input.texCoord0, 0.0, 0.0);
|
|
#endif
|
|
|
|
return output;
|
|
}
|
|
|
|
FragInput UnpackVaryings(PackedVaryings input)
|
|
{
|
|
FragInput output;
|
|
ZERO_INITIALIZE(FragInput, output);
|
|
|
|
output.unPositionSS = input.positionCS; // as input we have the vpos
|
|
|
|
#if NEED_TANGENT_TO_WORLD
|
|
output.positionWS.xyz = input.interpolators[0].xyz;
|
|
output.tangentToWorld[0] = input.interpolators[1].xyz;
|
|
output.tangentToWorld[1] = input.interpolators[2].xyz;
|
|
output.tangentToWorld[2] = input.interpolators[3].xyz;
|
|
|
|
output.texCoord0.xy = float2(input.interpolators[0].w, input.interpolators[1].w);
|
|
#elif NEED_TEXCOORD0
|
|
output.texCoord0.xy = input.interpolators[0].xy;
|
|
#endif
|
|
|
|
return output;
|
|
}
|
|
|
|
PackedVaryings Vert(Attributes input)
|
|
{
|
|
Varyings output;
|
|
|
|
float3 positionWS = TransformObjectToWorld(input.positionOS);
|
|
output.positionCS = TransformWorldToHClip(positionWS);
|
|
|
|
#if NEED_TEXCOORD0
|
|
output.texCoord0 = input.uv0;
|
|
#endif
|
|
|
|
#if NEED_TANGENT_TO_WORLD
|
|
output.positionWS = positionWS;
|
|
|
|
float3 normalWS = TransformObjectToWorldNormal(input.normalOS);
|
|
float4 tangentWS = float4(TransformObjectToWorldDir(input.tangentOS.xyz), input.tangentOS.w);
|
|
|
|
float3x3 tangentToWorld = CreateTangentToWorld(normalWS, tangentWS.xyz, tangentWS.w);
|
|
output.tangentToWorld[0] = tangentToWorld[0];
|
|
output.tangentToWorld[1] = tangentToWorld[1];
|
|
output.tangentToWorld[2] = tangentToWorld[2];
|
|
#endif
|
|
|
|
return PackVaryings(output);
|
|
}
|