obs-StreamFX/data/examples/shaders/base.effect

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// Copyright (C) 2021-2023 Michael Fabian 'Xaymar' Dirks <info@xaymar.com>
// AUTOGENERATED COPYRIGHT HEADER END
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//------------------------------------------------------------------------------
// Defines
//------------------------------------------------------------------------------
// Variations of PI/TAU
#define PI   3.141592653
#define TAU  6.283185307
#define PIm2 6.283185307
#define PIb2 1.570796326
#define PIb4 0.785398163

// Phi/Φ = Golden Ratio
#define PHI 1.61803398874989484820459

// e (Eulers Constant)
#define EULERS_CONSTANT 2.7182818284590452353602874713527

// Degrees <-> Radians Conversion
#define TO_RAD(x) (x *  0.017453292)
#define TO_DEG(x) (x * 57.295779513)

//------------------------------------------------------------------------------
// Uniforms
//------------------------------------------------------------------------------
uniform float4x4 ViewProj<
	bool automatic = true;
>;

uniform float4 Time<
	bool automatic = true;
>;

uniform float4 ViewSize<
	bool automatic = true;
>;

// Filter Support
#ifdef IS_FILTER
uniform texture2d InputA<
	bool automatic = true;
>;
#endif

// Transition Support
#ifdef IS_TRANSITION
uniform texture2d InputA<
	bool automatic = true;
>;

uniform texture2d InputB<
	bool automatic = true;
>;

uniform float TransitionTime<
	bool automatic = true;
>;
#endif

uniform int RandomSeed<
	bool automatic = true;
>;

uniform float4x4 Random<
	bool automatic = true;
>;

//------------------------------------------------------------------------------
// Structures
//------------------------------------------------------------------------------
struct VertexInformation {
	float4 position : POSITION;
	float4 texcoord0 : TEXCOORD0;
};

//------------------------------------------------------------------------------
// Samplers
//------------------------------------------------------------------------------
sampler_state PointRepeatSampler {
	Filter    = Point;
	AddressU  = Repeat;
	AddressV  = Repeat;
};
sampler_state LinearRepeatSampler {
	Filter    = Linear;
	AddressU  = Repeat;
	AddressV  = Repeat;
};

sampler_state PointClampSampler {
	Filter    = Point;
	AddressU  = Clamp;
	AddressV  = Clamp;
};
sampler_state LinearClampSampler {
	Filter    = Linear;
	AddressU  = Clamp;
	AddressV  = Clamp;
};

//------------------------------------------------------------------------------
// Functions
//------------------------------------------------------------------------------
VertexInformation DefaultVertexShader(VertexInformation vtx) {
	vtx.position = mul(float4(vtx.position.xyz, 1.0), ViewProj);
	return vtx;
};

bool is_float_equal(float a, float b) {
	return (abs(a - b) <= .00001);
}