87 lines
3.2 KiB
Plaintext
87 lines
3.2 KiB
Plaintext
// Copyright 2021 Michael Fabian Dirks <info@xaymar.com>
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// 3. Neither the name of the copyright holder nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//------------------------------------------------------------------------------
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// Defines
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//------------------------------------------------------------------------------
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// Kernel size as sequential float4's.
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#define KERNEL_SIZE 32
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//------------------------------------------------------------------------------
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// Uniforms
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//------------------------------------------------------------------------------
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uniform float4x4 ViewProj;
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uniform texture2d pImage;
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uniform float2 pImageSize;
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uniform float2 pImageTexel;
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uniform float2 pImageHalfTexel;
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uniform float pSize;
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uniform float pSizeInverseMul;
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uniform float pAngle;
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uniform float2 pCenter;
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uniform float2 pStepScale;
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uniform float4 pKernel[KERNEL_SIZE];
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//------------------------------------------------------------------------------
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// Structures
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//------------------------------------------------------------------------------
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struct VertexInformation {
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float4 pos : POSITION;
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float2 uv : TEXCOORD0;
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};
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sampler_state LinearClampSampler {
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Filter = Linear;
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AddressU = Clamp;
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AddressV = Clamp;
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MinLOD = 0;
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MaxLOD = 0;
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};
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//------------------------------------------------------------------------------
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// Functions
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//------------------------------------------------------------------------------
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VertexInformation VSDefault(VertexInformation vtx) {
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vtx.pos = mul(float4(vtx.pos.xyz, 1.0), ViewProj);
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return vtx;
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}
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float2 rotate(float2 pt, float angle) {
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float cp = cos(angle);
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float sp = sin(angle);
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float sn = -sp;
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return float2((pt.x * cp) + (pt.y * sn), (pt.x * sp) + (pt.y * cp));
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}
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float2 rotateAround(float2 pt, float2 cpt, float angle) {
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return rotate(pt - cpt, angle) + cpt;
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}
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float kernelAt(uint i) {
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return ((float[4])(pKernel[floor(i/4)]))[i%4];
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}
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