736696ac36
Sync light state, bound shader, and various gl context states similarly to render matrices. Texture handles now refcounted, as multiple viewer textures could ref the same handle (cubemaps do this) Clean up gl extension loading a bit. Not necessary, but only look for ARB variants if not included in current core version. Removed unused extensions. Use core shader api if supported, else use ARB. (FN signatures are identical. Just doing some pointer substitution to ARB if not core.) Attempt at improving VBO update batching. Subdata updates better batched to gether per-frame. There's probably other stuff I forgot that is in this changeset, too. Todo: Fix lightstate assertion when toggling fullscreen with shaders off.
65 lines
2.7 KiB
GLSL
65 lines
2.7 KiB
GLSL
/**
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* @file sumLightsSpecularV.glsl
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*
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* $LicenseInfo:firstyear=2005&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2005, 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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float calcDirectionalLightSpecular(inout vec4 specular, vec3 view, vec3 n, vec3 l, vec3 lightCol, float da);
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vec3 calcPointLightSpecular(inout vec4 specular, vec3 view, vec3 v, vec3 n, vec3 l, float r, float pw, vec3 lightCol);
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vec3 atmosAmbient(vec3 light);
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vec3 atmosAffectDirectionalLight(float lightIntensity);
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vec3 atmosGetDiffuseSunlightColor();
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vec3 scaleDownLight(vec3 light);
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uniform vec4 light_position[8];
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uniform vec3 light_attenuation[8];
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uniform vec3 light_diffuse[8];
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vec4 sumLightsSpecular(vec3 pos, vec3 norm, vec4 color, inout vec4 specularColor, vec4 baseCol)
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{
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vec4 col = vec4(0.0, 0.0, 0.0, color.a);
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vec3 view = normalize(pos);
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/// collect all the specular values from each calcXXXLightSpecular() function
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vec4 specularSum = vec4(0.0);
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// Collect normal lights (need to be divided by two, as we later multiply by 2)
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col.rgb += calcPointLightSpecular(specularSum, view, pos, norm, light_position[1].xyz, light_attenuation[1].x, light_attenuation[1].y, light_diffuse[1].rgb);
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col.rgb += calcPointLightSpecular(specularSum, view, pos, norm, light_position[2].xyz, light_attenuation[2].x, light_attenuation[2].y, light_diffuse[2].rgb);
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col.rgb += calcPointLightSpecular(specularSum, view, pos, norm, light_position[3].xyz, light_attenuation[3].x, light_attenuation[3].y, light_diffuse[3].rgb);
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col.rgb = scaleDownLight(col.rgb);
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// Add windlight lights
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col.rgb += atmosAmbient(baseCol.rgb);
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col.rgb += atmosAffectDirectionalLight(calcDirectionalLightSpecular(specularSum, view, norm, light_position[0].xyz,atmosGetDiffuseSunlightColor()*baseCol.a, 1.0));
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col.rgb = min(col.rgb*color.rgb, 1.0);
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specularColor.rgb = min(specularColor.rgb*specularSum.rgb, 1.0);
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col.rgb += specularColor.rgb;
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return col;
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}
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