obs-StreamFX/data/effects/blur/common.effect

// AUTOGENERATED COPYRIGHT HEADER START
// Copyright (C) 2021-2023 Michael Fabian 'Xaymar' Dirks <info@xaymar.com>
// AUTOGENERATED COPYRIGHT HEADER END
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//------------------------------------------------------------------------------
// Defines
//------------------------------------------------------------------------------
// Kernel size as sequential float4's.
#define KERNEL_SIZE 32

//------------------------------------------------------------------------------
// Uniforms
//------------------------------------------------------------------------------
uniform float4x4 ViewProj;
uniform texture2d pImage;
uniform float2 pImageSize;
uniform float2 pImageTexel;
uniform float pSize;
uniform float pSizeInverseMul;
uniform float pAngle;
uniform float2 pCenter;
uniform float2 pStepScale;
uniform float4 pKernel[KERNEL_SIZE];

//------------------------------------------------------------------------------
// Structures
//------------------------------------------------------------------------------
struct VertexInformation {
	float4 pos : POSITION;
	float2 uv  : TEXCOORD0;
};

sampler_state LinearClampSampler {
	Filter = Linear;
	AddressU = Clamp;
	AddressV = Clamp;
	MinLOD = 0;
	MaxLOD = 0;
};

//------------------------------------------------------------------------------
// Functions
//------------------------------------------------------------------------------

VertexInformation VSDefault(VertexInformation vtx) {
	vtx.pos = mul(float4(vtx.pos.xyz, 1.0), ViewProj);
	return vtx;
}

float2 rotate(float2 pt, float angle) {
	float cp = cos(angle);
	float sp = sin(angle);
	float sn = -sp;
	return float2((pt.x * cp) + (pt.y * sn), (pt.x * sp) + (pt.y * cp));
}

float2 rotateAround(float2 pt, float2 cpt, float angle) {
	return rotate(pt - cpt, angle) + cpt;
}

float kernelAt(uint i) {
	return pKernel[i/4u][i%4u];
}