Add shaders

Sources/Shaders/EnviroBlit.shader

@@ -0,0 +1,175 @@
+Shader "Enviro/Standard/Blit"
+{
+	Properties
+	{
+		_MainTex("Base (RGB)", any) = "white" {}
+	_CloudsTex("Clouds (RGB)", any) = "white" {}
+	}
+		SubShader
+	{
+		Pass
+	{
+		Cull Off
+		ZWrite Off
+		Ztest LEqual
+
+		CGPROGRAM
+
+	#pragma vertex vert
+	#pragma fragment frag
+	#include "UnityCG.cginc"
+	#pragma exclude_renderers gles 
+	#pragma multi_compile __ ENVIRO_DEPTHBLENDING
+
+	UNITY_DECLARE_SCREENSPACE_TEXTURE(_MainTex);
+	uniform half4 _MainTex_ST;
+	uniform half4 _MainTex_TexelSize;
+	UNITY_DECLARE_DEPTH_TEXTURE(_CameraDepthTexture);
+	uniform half4 _CameraDepthTexture_ST;
+
+	uniform UNITY_DECLARE_SCREENSPACE_TEXTURE(_SubFrame);
+	uniform half4 _SubFrame_ST;
+	uniform UNITY_DECLARE_SCREENSPACE_TEXTURE(_PrevFrame);
+	uniform half4 _PrevFrame_ST;
+
+	uniform float4x4 _Projection;
+	uniform float4x4 _ProjectionSPVR;
+	uniform float4x4 _InverseProjection;
+	uniform float4x4 _InverseProjectionSPVR;
+
+	uniform float4x4 _InverseRotation;
+	uniform float4x4 _InverseRotationSPVR;
+
+	uniform float4x4 _PreviousRotation;
+	uniform float4x4 _PreviousRotationSPVR;
+
+	uniform float _FrameNumber;
+	uniform float _ReprojectionPixelSize;
+
+	uniform float2 _SubFrameDimension;
+	uniform float2 _FrameDimension;
+
+
+	struct v2f {
+		float4 position : SV_POSITION;
+		float2 uv : TEXCOORD0;
+		float2 uv1 : TEXCOORD1;
+
+		UNITY_VERTEX_OUTPUT_STEREO
+	};
+
+	v2f vert(appdata_img v)
+	{
+		v2f o;
+
+		UNITY_SETUP_INSTANCE_ID(v); //Insert
+		UNITY_INITIALIZE_OUTPUT(v2f, o); //Insert
+		UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o); //Insert
+
+		o.position = UnityObjectToClipPos(v.vertex);
+		o.uv = v.texcoord;
+
+#if UNITY_UV_STARTS_AT_TOP
+		o.uv1 = v.texcoord.xy;
+		if (_MainTex_TexelSize.y < 0)
+			o.uv1.y = 1 - o.uv1.y;
+#endif	
+ 
+		return o;
+	}
+
+	float4 frag(v2f i) : COLOR
+	{
+		UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(i);
+
+#if UNITY_UV_STARTS_AT_TOP
+	float4 main = UNITY_SAMPLE_SCREENSPACE_TEXTURE(_MainTex, UnityStereoScreenSpaceUVAdjust(i.uv1, _MainTex_ST));
+#else
+	float4 main = UNITY_SAMPLE_SCREENSPACE_TEXTURE(_MainTex, UnityStereoScreenSpaceUVAdjust(i.uv, _MainTex_ST));
+#endif
+
+	float4 final = main;
+
+
+#ifndef ENVIRO_DEPTHBLENDING
+
+#if UNITY_UV_STARTS_AT_TOP
+	float depthSample = SAMPLE_DEPTH_TEXTURE(_CameraDepthTexture, UnityStereoScreenSpaceUVAdjust(i.uv1.xy, _CameraDepthTexture_ST));
+#else
+	float depthSample = SAMPLE_DEPTH_TEXTURE(_CameraDepthTexture, UnityStereoScreenSpaceUVAdjust(i.uv.xy, _CameraDepthTexture_ST));
+#endif
+
+	depthSample = Linear01Depth(depthSample);
+
+	if (depthSample > 0.9999)
+	{
+#endif
+
+		float2 uv = (floor(i.uv * _FrameDimension) + 0.5) / _FrameDimension;
+		float2 uv2 = (floor(i.uv * _SubFrameDimension) + 0.5) / _SubFrameDimension;
+
+		float x = fmod(uv.x, _ReprojectionPixelSize);
+		float y = fmod(uv.y, _ReprojectionPixelSize);
+		float currentFrame = y * _ReprojectionPixelSize + x;
+
+		float4 cloud;
+
+		if (currentFrame == _FrameNumber)
+		{
+			cloud = UNITY_SAMPLE_SCREENSPACE_TEXTURE(_SubFrame, UnityStereoScreenSpaceUVAdjust(uv2, _MainTex_ST));
+		}
+		else
+		{
+			float4 reprojection;
+			float4 pos = float4(i.uv * 2.0 - 1.0, 1.0, 1.0);
+
+#if UNITY_SINGLE_PASS_STEREO || ENVIRO_SINGLEPASSINSTANCED
+			if (unity_StereoEyeIndex == 0)
+			{
+				pos = mul(_InverseProjection, pos);
+				pos = pos / pos.w;
+				pos.xyz = mul((float3x3)_InverseRotation, pos.xyz);
+				pos.xyz = mul((float3x3)_PreviousRotation, pos.xyz);
+
+				reprojection = mul(_Projection, pos);
+			}
+			else
+			{
+				pos = mul(_InverseProjectionSPVR, pos);
+				pos = pos / pos.w;
+				pos.xyz = mul((float3x3)_InverseRotationSPVR, pos.xyz);
+				pos.xyz = mul((float3x3)_PreviousRotationSPVR, pos.xyz);
+
+				reprojection = mul(_ProjectionSPVR, pos);
+			}
+#else
+			pos = mul(_InverseProjection, pos);
+			pos = pos / pos.w;
+			pos.xyz = mul((float3x3)_InverseRotation, pos.xyz);
+			pos.xyz = mul((float3x3)_PreviousRotation, pos.xyz);
+
+			reprojection = mul(_Projection, pos);
+#endif
+
+			if (reprojection.y < 0.0 || reprojection.y > 1.0 || reprojection.x < 0.0 || reprojection.x > 1.0)
+			{
+				cloud = UNITY_SAMPLE_SCREENSPACE_TEXTURE(_SubFrame, UnityStereoScreenSpaceUVAdjust(i.uv, _MainTex_ST));
+			}
+			else
+			{ 
+				cloud = UNITY_SAMPLE_SCREENSPACE_TEXTURE(_PrevFrame, UnityStereoScreenSpaceUVAdjust(reprojection.xy, _MainTex_ST));
+			}
+		}
+
+		final = float4 (main * (1 - cloud.a) + cloud.rgb * cloud.a, 1.0);
+
+#ifndef ENVIRO_DEPTHBLENDING
+	}
+#endif
+	return final;
+	}
+
+		ENDCG
+	}
+	}
+}