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#if SHADERPASS != SHADERPASS_FORWARD_UNLIT
#error SHADERPASS_is_not_correctly_define
#endif
#include "VertMesh.hlsl"
PackedVaryingsType Vert(AttributesMesh inputMesh)
{
VaryingsType varyingsType;
varyingsType.vmesh = VertMesh(inputMesh);
return PackVaryingsType(varyingsType);
}
#ifdef TESSELLATION_ON
PackedVaryingsToPS VertTesselation(VaryingsToDS input)
{
VaryingsToPS output;
output.vmesh = VertMeshTesselation(input.vmesh);
return PackVaryingsToPS(output);
}
#include "TessellationShare.hlsl"
#endif // TESSELLATION_ON
float4 Frag(PackedVaryingsToPS packedInput) : SV_Target
{
FragInputs input = UnpackVaryingsMeshToFragInputs(packedInput.vmesh);
// input.positionSS is SV_Position
PositionInputs posInput = GetPositionInput(input.positionSS.xy, _ScreenSize.zw);
UpdatePositionInput(input.positionSS.z, input.positionSS.w, input.positionWS, posInput);
#ifdef VARYINGS_NEED_POSITION_WS
float3 V = GetWorldSpaceNormalizeViewDir(input.positionWS);
#else
float3 V = 0; // Avoid the division by 0
#endif
SurfaceData surfaceData;
BuiltinData builtinData;
GetSurfaceAndBuiltinData(input, V, posInput, surfaceData, builtinData);
// Not lit here (but emissive is allowed)
BSDFData bsdfData = ConvertSurfaceDataToBSDFData(surfaceData);
// TODO: we must not access bsdfData here, it break the genericity of the code!
float4 outColor = ApplyBlendMode(bsdfData.color + builtinData.emissiveColor, builtinData.opacity);
outColor = EvaluateAtmosphericScattering(posInput, outColor);
#ifdef DEBUG_DISPLAY
// Same code in ShaderPassForward.shader
if (_DebugViewMaterial != 0)
{
float3 result = float3(1.0, 0.0, 1.0);
bool needLinearToSRGB = false;
GetPropertiesDataDebug(_DebugViewMaterial, result, needLinearToSRGB);
GetVaryingsDataDebug(_DebugViewMaterial, input, result, needLinearToSRGB);
GetBuiltinDataDebug(_DebugViewMaterial, builtinData, result, needLinearToSRGB);
GetBSDFDataDebug(_DebugViewMaterial, bsdfData, result, needLinearToSRGB); // TODO: This required to initialize all field from BSDFData...
// TEMP!
// For now, the final blit in the backbuffer performs an sRGB write
// So in the meantime we apply the inverse transform to linear data to compensate.
if (!needLinearToSRGB)
result = SRGBToLinear(max(0, result));
outColor = float4(result, 1.0);
}
#endif
return outColor;
}