mirror of
https://github.com/scratchfoundation/bgfx.git
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53 lines
1.4 KiB
Bash
53 lines
1.4 KiB
Bash
/*
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* Copyright 2011-2014 Branimir Karadzic. All rights reserved.
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* License: http://www.opensource.org/licenses/BSD-2-Clause
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*/
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#include "../common/common.sh"
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uniform vec4 u_offset[16];
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uniform vec4 u_weight[16];
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uniform vec4 u_tonemap;
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float reinhard(float _x)
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{
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return _x / (_x + 1.0);
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}
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vec3 reinhard(vec3 _x)
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{
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return _x / (_x + 1.0);
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}
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float reinhard2(float _x, float _whiteSqr)
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{
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return (_x * (1.0 + _x/_whiteSqr) ) / (1.0 + _x);
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}
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vec3 reinhard2(vec3 _x, float _whiteSqr)
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{
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return (_x * (1.0 + _x/_whiteSqr) ) / (1.0 + _x);
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}
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vec4 blur9(sampler2D _sampler, vec2 _uv0, vec4 _uv1, vec4 _uv2, vec4 _uv3, vec4 _uv4)
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{
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#define _BLUR9_WEIGHT_0 1.0
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#define _BLUR9_WEIGHT_1 0.9
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#define _BLUR9_WEIGHT_2 0.55
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#define _BLUR9_WEIGHT_3 0.18
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#define _BLUR9_WEIGHT_4 0.1
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#define _BLUR9_NORMALIZE (_BLUR9_WEIGHT_0+2.0*(_BLUR9_WEIGHT_1+_BLUR9_WEIGHT_2+_BLUR9_WEIGHT_3+_BLUR9_WEIGHT_4) )
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#define BLUR9_WEIGHT(_x) (_BLUR9_WEIGHT_##_x/_BLUR9_NORMALIZE)
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vec4 blur;
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blur = texture2D(_sampler, _uv0)*BLUR9_WEIGHT(0);
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blur += texture2D(_sampler, _uv1.xy)*BLUR9_WEIGHT(1);
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blur += texture2D(_sampler, _uv1.zw)*BLUR9_WEIGHT(1);
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blur += texture2D(_sampler, _uv2.xy)*BLUR9_WEIGHT(2);
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blur += texture2D(_sampler, _uv2.zw)*BLUR9_WEIGHT(2);
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blur += texture2D(_sampler, _uv3.xy)*BLUR9_WEIGHT(3);
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blur += texture2D(_sampler, _uv3.zw)*BLUR9_WEIGHT(3);
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blur += texture2D(_sampler, _uv4.xy)*BLUR9_WEIGHT(4);
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blur += texture2D(_sampler, _uv4.zw)*BLUR9_WEIGHT(4);
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return blur;
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}
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