obs-StreamFX/data/examples/shaders/source/example.effect

// Always provided by OBS
uniform float4x4 ViewProj<
	bool visible = false;
	string name = "View Projection Matrix";
>;

// Provided by Stream Effects
uniform float4 Time<
	bool visible = false;
	string name = "Time Array";
	string description = "A float array of length 4, with the indexes being:\n[0] Time Visible in Seconds\n[1] Last Render Time\n[2] Current System Time (24h looping)\n[3] Random value between 0 and 1.";
>;
/*uniform float4x4 Random<
	bool visible = false;
	string name = "Random Matrix";
	string description = "A float4x4 value containing random values between 0 and 1. Changes every frame.";
>;
uniform float4x4 Seed<
	bool visible = false;
	string name = "Seed Matrix";
	string description = "A float4x4 value containing random seeds values between 0 and 1. Values determined once on Source creation.";
>;*/

// Parameters
uniform bool BoolParameter<
	bool visible = true;
	string name = "Bool Parameter";
	string description = "Example";
>;
/*uniform int IntParameter<
	bool visible = true;
	string name = "Int Parameter";
	string description = "Example";
>;
uniform int2 Int2Parameter<
	bool visible = true;
	string name = "Int2 Parameter";
	string description = "Example";
>;
uniform int3 Int3Parameter<
	bool visible = true;
	string name = "Int3 Parameter";
	string description = "Example";
>;
uniform int4 Int4Parameter<
	bool visible = true;
	string name = "Int4 Parameter";
	string description = "Example";
>;*/
uniform float FloatParameter<
	bool visible = true;
	string name = "Float Parameter";
	string description = "Example";
>;
uniform float2 Float2Parameter<
	bool visible = true;
	string name = "Float2 Parameter";
	string description = "Example";
>;
uniform float3 Float3Parameter<
	bool visible = true;
	string name = "Float3 Parameter";
	string description = "Example";
>;
uniform float4 Float4Parameter<
	bool visible = true;
	string name = "Float4 Parameter";
	string description = "Example";
>;

// ---------- Shader Code
sampler_state def_sampler {
	AddressU  = Wrap;
	AddressV  = Wrap;
	Filter    = Linear;
};

struct VertData {
	float4 pos : POSITION;
	float2 uv  : TEXCOORD0;
};

struct FragData {
	float4 pos : POSITION;
	float2 uv  : TEXCOORD0;
};

FragData VSDefault(VertData v_in) {
	FragData vert_out;
	vert_out.pos = mul(float4(v_in.pos.xyz, 1.0), ViewProj);
	vert_out.uv  = v_in.uv;
	return vert_out;
}

float4 PSTime(FragData v_in) : TARGET {
	return float4(
		cos(Time[0] * 5.) * 0.5 + 0.5,
		cos(Time[0] * 0.) * 0.5 + 0.5,
		cos(Time[0] * 0.) * 0.5 + 0.5,
		1.0);
}

technique Draw
{
	pass
	{
		vertex_shader = VSDefault(v_in);
		pixel_shader  = PSTime(v_in); 
	}
}

float4 PSBool(FragData v_in) : TARGET {
	if (BoolParameter)	
		return float4(
			cos(Time[0] * 5.) * 0.5 + 0.5,
			cos(Time[0] * 0.) * 0.5 + 0.5,
			cos(Time[0] * 0.) * 0.5 + 0.5,
			1.0);
	return float4(0, 0, 0, 1.0);
}

technique Bool
{
	pass
	{
		vertex_shader = VSDefault(v_in);
		pixel_shader  = PSBool(v_in); 
	}
}

float4 PSFloat(FragData v_in) : TARGET {
	return float4(FloatParameter.xxx, 1.0);
}

technique Float
{
	pass
	{
		vertex_shader = VSDefault(v_in);
		pixel_shader  = PSFloat(v_in); 
	}
}

float4 PSFloat2(FragData v_in) : TARGET {
	return Float2Parameter.xxxy;
}

technique Float2
{
	pass
	{
		vertex_shader = VSDefault(v_in);
		pixel_shader  = PSFloat2(v_in); 
	}
}

float4 PSFloat3(FragData v_in) : TARGET {
	return float4(Float3Parameter, 1.0);
}

technique Float3
{
	pass
	{
		vertex_shader = VSDefault(v_in);
		pixel_shader  = PSFloat3(v_in); 
	}
}

float4 PSFloat4(FragData v_in) : TARGET {
	return Float4Parameter;
}

technique Float4
{
	pass
	{
		vertex_shader = VSDefault(v_in);
		pixel_shader  = PSFloat4(v_in); 
	}
}