So I'm trying to use a simple 2d fluid with the LW rendering pipeline and nothing I try is working...
I'm trying to get the basic obi particle renderer to work and show the fluid particles so I can at least see what I am doing. I found a previous thread about changing the tags in the shader.. but that didn't seem to do the trick.
The simpleparticleshader.shader file looks something like this at the moment:
I believe I added the right tags to both passes.. and changed the line
as Unity was screaming a warning log at me about using Matrix_MV. I'm not entirely sure if that's how it should look as I am a newb with shaders... But I can definitely tell you that it still does not work. I don't see anything on my camera screen. That said, the simulation DOES work, but for me to see the particles (and only with the editor camera during playmode) I need to press the edit particles button on the obi emitter component.
Also, I am getting a log "Material Property is found in another cbuffer than 'UnityPerMaterial' (_Color)". Googling about, I found that to get it working with the SRP Batcher it needs to be in a CBUFFER_START(UnityPerMaterial) CBUFFER_END block... but I don't know how to implement that either... if anyone knows how, that would be great.
I'm trying to get the basic obi particle renderer to work and show the fluid particles so I can at least see what I am doing. I found a previous thread about changing the tags in the shader.. but that didn't seem to do the trick.
The simpleparticleshader.shader file looks something like this at the moment:
Code:
Shader "Obi/Simple Particles" {
Properties {
_Color ("Particle color", Color) = (1,1,1,1)
}
SubShader {
Pass {
Name "ParticleFwdBase"
Tags {"LightMode" = "LightweightForward" "RenderType" = "Opaque" "RenderPipeline" = "LightweightPipeline" "IgnoreProjector" = "True"}
Blend SrcAlpha OneMinusSrcAlpha
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#pragma fragmentoption ARB_precision_hint_fastest
#pragma multi_compile_fwdbase nolightmap
#include "ObiParticles.cginc"
fixed4 _Color;
fixed4 _LightColor0;
struct vin{
float4 vertex : POSITION;
float3 corner : NORMAL;
fixed4 color : COLOR;
float4 t0 : TEXCOORD0; // ellipsoid t1 vector
};
struct v2f
{
float4 pos : POSITION;
fixed4 color : COLOR;
float2 texcoord : TEXCOORD0;
float3 lightDir : TEXCOORD1;
LIGHTING_COORDS(3,4)
};
v2f vert(vin v)
{
v2f o;
// particle positions are passed in world space, no need to use modelview matrix, just view.
float radius = v.t0.w * _RadiusScale;
float4 viewpos = mul(UNITY_MATRIX_V, v.vertex) + float4(v.corner.x, v.corner.y, 0, 0) * radius; // multiply by size.
o.pos = mul(UNITY_MATRIX_P, viewpos);
o.texcoord = float3(v.corner.x*0.5+0.5, v.corner.y*0.5+0.5, radius);
o.color = v.color * _Color;
o.lightDir = UnityObjectToViewPos(ObjSpaceLightDir(v.vertex));
TRANSFER_VERTEX_TO_FRAGMENT(o);
return o;
}
fixed4 frag(v2f i) : SV_Target
{
// generate sphere normals:
float3 n = BillboardSphereNormals(i.texcoord);
// simple lighting: diffuse
float ndotl = saturate( dot( n, normalize(i.lightDir) ) );
// final lit color:
return fixed4(i.color.rgb * (_LightColor0 * ndotl + UNITY_LIGHTMODEL_AMBIENT),i.color.a);
}
ENDCG
}
Pass {
Name "ShadowCaster"
Tags { "LightMode" = "LightweightForward" }
Offset 1, 1
Fog {Mode Off}
ZWrite On ZTest LEqual
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#pragma fragmentoption ARB_precision_hint_fastest
#pragma multi_compile_shadowcaster nolightmap
#include "ObiParticles.cginc"
struct vin{
float4 vertex : POSITION;
float3 corner : NORMAL;
float4 t0 : TEXCOORD0; // ellipsoid t1 vector
};
struct v2f {
float4 pos : POSITION;
float3 texcoord : TEXCOORD0;
};
v2f vert( vin v )
{
v2f o;
float radius = v.t0.w * _RadiusScale;
float4 viewpos = mul(UNITY_MATRIX_V, v.vertex) + float4(v.corner.x, v.corner.y, 0, 0) * radius;
o.pos = mul(UNITY_MATRIX_P, viewpos);
o.texcoord = float3(v.corner.x*0.5+0.5, v.corner.y*0.5+0.5, radius);
return o;
}
fixed4 frag( v2f i ) : SV_Target
{
float3 n = BillboardSphereNormals(i.texcoord);
return fixed4(0,0,0,0);
}
ENDCG
}
}
FallBack "Diffuse"
}I believe I added the right tags to both passes.. and changed the line
Code:
o.lightDir = UnityObjectToViewPos(ObjSpaceLightDir(v.vertex));as Unity was screaming a warning log at me about using Matrix_MV. I'm not entirely sure if that's how it should look as I am a newb with shaders... But I can definitely tell you that it still does not work. I don't see anything on my camera screen. That said, the simulation DOES work, but for me to see the particles (and only with the editor camera during playmode) I need to press the edit particles button on the obi emitter component.
Also, I am getting a log "Material Property is found in another cbuffer than 'UnityPerMaterial' (_Color)". Googling about, I found that to get it working with the SRP Batcher it needs to be in a CBUFFER_START(UnityPerMaterial) CBUFFER_END block... but I don't know how to implement that either... if anyone knows how, that would be great.
