obs-StreamFX/data/effects/blur/common.effect
Michael Fabian 'Xaymar' Dirks 91c9df3097 project: Apply Coding Guidelines
2023-04-05 18:51:13 +02:00

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// Copyright 2021 Michael Fabian Dirks <info@xaymar.com>
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// 3. Neither the name of the copyright holder nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//------------------------------------------------------------------------------
// 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];
}