mirror of https://github.com/Xaymar/obs-StreamFX
80 lines
3.3 KiB
Plaintext
80 lines
3.3 KiB
Plaintext
// AUTOGENERATED COPYRIGHT HEADER START
|
|
// Copyright (C) 2021-2023 Michael Fabian 'Xaymar' Dirks <info@xaymar.com>
|
|
// AUTOGENERATED COPYRIGHT HEADER END
|
|
//
|
|
// 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.
|
|
|
|
#define IS_FILTER
|
|
#include "../base.effect"
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Uniforms
|
|
//-----------------------------------------------------------------------------
|
|
|
|
uniform texture2d DisplacementMap<
|
|
string name = "Displacement Map";
|
|
string description = "A standard normal map to be used for displacement";
|
|
string field_type = "input";
|
|
>;
|
|
|
|
uniform float DisplacementRange<
|
|
string name = "Displacement Range";
|
|
string field_type = "slider";
|
|
string suffix = " px";
|
|
float minimum = -1000.0;
|
|
float maximum = 1000.0;
|
|
float step = 0.01;
|
|
float scale = 1.00;
|
|
> = 10.0;
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Technique: Version_1_0
|
|
//-----------------------------------------------------------------------------
|
|
|
|
float4 DisplacementPixelShader_v1(VertexInformation vtx) : TARGET {
|
|
// Calculate proper offset.
|
|
// 1. Sample the DisplacementMap texture.
|
|
float2 offset = DisplacementMap.Sample(LinearClampSampler, vtx.texcoord0.xy).rg;
|
|
// 2. Convert from [+0.0, +1.0] to [-0.5, +0.5].
|
|
offset -= .5f;
|
|
// 3. Fix the aliasing that happens with 8bpc normal maps, which also gives us the range [-1.0, +1.0].
|
|
offset = floor(abs(offset * 255.f)) / 127.f * sign(offset);
|
|
// 4. Scale to correct range specified by the user.
|
|
offset *= DisplacementRange * ViewSize.zw;
|
|
// 5. Calculate final sampled UV.
|
|
float2 sample_uv = vtx.texcoord0.xy + offset;
|
|
|
|
// Sample the Input texture at sample_uv.
|
|
return InputA.Sample(LinearClampSampler, sample_uv);
|
|
}
|
|
|
|
technique Version_1_0 {
|
|
pass
|
|
{
|
|
vertex_shader = DefaultVertexShader(vtx);
|
|
pixel_shader = DisplacementPixelShader_v1(vtx);
|
|
}
|
|
}
|