79 lines
1.9 KiB
GLSL
79 lines
1.9 KiB
GLSL
/**
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* @file postDeferredTonemap.glsl
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*
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* $LicenseInfo:firstyear=2024&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2024, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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/*[EXTRA_CODE_HERE]*/
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out vec4 frag_color;
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uniform sampler2D diffuseRect;
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in vec2 vary_fragcoord;
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#ifdef GAMMA_CORRECT
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uniform float gamma;
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#endif
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vec3 linear_to_srgb(vec3 cl);
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vec3 toneMap(vec3 color);
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vec3 clampHDRRange(vec3 color);
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#ifdef GAMMA_CORRECT
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vec3 legacyGamma(vec3 color)
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{
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vec3 c = 1. - clamp(color, vec3(0.), vec3(1.));
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c = 1. - pow(c, vec3(gamma)); // s/b inverted already CPU-side
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return c;
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}
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#endif
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void main()
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{
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//this is the one of the rare spots where diffuseRect contains linear color values (not sRGB)
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vec4 diff = texture(diffuseRect, vary_fragcoord);
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#ifndef NO_POST
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diff.rgb = toneMap(diff.rgb);
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#else
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diff.rgb = clamp(diff.rgb, vec3(0.0), vec3(1.0));
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#endif
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#ifdef GAMMA_CORRECT
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diff.rgb = linear_to_srgb(diff.rgb);
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#ifdef LEGACY_GAMMA
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diff.rgb = legacyGamma(diff.rgb);
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#endif
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#endif
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diff.rgb = clamp(diff.rgb, vec3(0.0), vec3(1.0)); // We should always be 0-1 past this point
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//debugExposure(diff.rgb);
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frag_color = diff;
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}
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