/** * @file class1/deferred/softenLightF.glsl * * $LicenseInfo:firstyear=2007&license=viewerlgpl$ * Second Life Viewer Source Code * Copyright (C) 2007, Linden Research, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License only. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ #extension GL_ARB_texture_rectangle : enable #extension GL_ARB_shader_texture_lod : enable /*[EXTRA_CODE_HERE]*/ #ifdef DEFINE_GL_FRAGCOLOR out vec4 frag_color; #else #define frag_color gl_FragColor #endif uniform sampler2DRect diffuseRect; uniform sampler2DRect specularRect; uniform sampler2DRect normalMap; uniform sampler2DRect lightMap; uniform sampler2DRect depthMap; uniform samplerCube environmentMap; uniform sampler2D lightFunc; uniform float blur_size; uniform float blur_fidelity; // Inputs uniform mat3 env_mat; uniform vec3 sun_dir; uniform vec3 moon_dir; uniform int sun_up_factor; VARYING vec2 vary_fragcoord; uniform mat4 inv_proj; uniform vec2 screen_res; vec3 getNorm(vec2 pos_screen); vec4 getPositionWithDepth(vec2 pos_screen, float depth); void calcAtmosphericVars(vec3 inPositionEye, float ambFactor, out vec3 sunlit, out vec3 amblit, out vec3 additive, out vec3 atten, bool use_ao); float getAmbientClamp(); vec3 atmosFragLighting(vec3 l, vec3 additive, vec3 atten); vec3 scaleSoftClipFrag(vec3 l); vec3 linear_to_srgb(vec3 c); vec3 srgb_to_linear(vec3 c); #ifdef WATER_FOG vec4 applyWaterFogView(vec3 pos, vec4 color); #endif void main() { vec2 tc = vary_fragcoord.xy; float depth = texture2DRect(depthMap, tc.xy).r; vec4 pos = getPositionWithDepth(tc, depth); vec4 norm = texture2DRect(normalMap, tc); float envIntensity = norm.z; norm.xyz = getNorm(tc); vec3 light_dir = (sun_up_factor == 1) ? sun_dir : moon_dir; float da = dot(normalize(norm.xyz), light_dir.xyz); da = clamp(da, -1.0, 1.0); float final_da = da; final_da = clamp(final_da, 0.0, 1.0); vec4 diffuse_srgb = texture2DRect(diffuseRect, tc); vec4 diffuse_linear = vec4(srgb_to_linear(diffuse_srgb.rgb), diffuse_srgb.a); vec4 spec = texture2DRect(specularRect, vary_fragcoord.xy); vec3 color = vec3(0); float bloom = 0.0; { float ambocc = 1.0; // no AO... vec3 sunlit; vec3 amblit; vec3 additive; vec3 atten; calcAtmosphericVars(pos.xyz, ambocc, sunlit, amblit, additive, atten, false); float ambient = da; ambient *= 0.5; ambient *= ambient; ambient = (1.0 - ambient); vec3 sun_contrib = final_da * sunlit; #if !defined(AMBIENT_KILL) color.rgb = amblit; color.rgb *= ambient; #endif vec3 post_ambient = color.rgb; #if !defined(SUNLIGHT_KILL) color.rgb += sun_contrib; #endif vec3 post_sunlight = color.rgb; color.rgb *= diffuse_srgb.rgb; vec3 post_diffuse = color.rgb; vec3 refnormpersp = normalize(reflect(pos.xyz, norm.xyz)); if (spec.a > 0.0) // specular reflection { vec3 npos = -normalize(pos.xyz); //vec3 ref = dot(pos+lv, norm); vec3 h = normalize(light_dir.xyz+npos); float nh = dot(norm.xyz, h); float nv = dot(norm.xyz, npos); float vh = dot(npos, h); float sa = nh; float fres = pow(1 - dot(h, npos), 5)*0.4+0.5; float gtdenom = 2 * nh; float gt = max(0, min(gtdenom * nv / vh, gtdenom * da / vh)); if (nh > 0.0) { float scontrib = fres*texture2D(lightFunc, vec2(nh, spec.a)).r*gt/(nh*da); vec3 sp = sun_contrib*scontrib / 16.0; sp = clamp(sp, vec3(0), vec3(1)); bloom += dot(sp, sp) / 6.0; #if !defined(SUNLIGHT_KILL) color += sp * spec.rgb; #endif } } vec3 post_spec = color.rgb; #ifndef WATER_FOG color.rgb = mix(color.rgb, diffuse_srgb.rgb, diffuse_srgb.a); #endif if (envIntensity > 0.0) { //add environmentmap vec3 env_vec = env_mat * refnormpersp; vec3 reflected_color = textureCube(environmentMap, env_vec).rgb; #if !defined(SUNLIGHT_KILL) color = mix(color.rgb, reflected_color, envIntensity); #endif } vec3 post_env = color.rgb; if (norm.w < 1) { #if !defined(SUNLIGHT_KILL) color = atmosFragLighting(color, additive, atten); color = scaleSoftClipFrag(color); #endif } vec3 post_atmo = color.rgb; #ifdef WATER_FOG vec4 fogged = applyWaterFogView(pos.xyz,vec4(color, bloom)); color = fogged.rgb; bloom = fogged.a; #endif // srgb colorspace debuggables //color.rgb = amblit; //color.rgb = sunlit; //color.rgb = post_ambient; //color.rgb = sun_contrib; //color.rgb = post_sunlight; //color.rgb = diffuse_srgb.rgb; //color.rgb = post_diffuse; //color.rgb = post_spec; //color.rgb = post_env; //color.rgb = post_atmo; // convert to linear as fullscreen lights need to sum in linear colorspace // and will be gamma (re)corrected downstream... color.rgb = srgb_to_linear(color.rgb); } // linear debuggables //color.rgb = vec3(final_da); //color.rgb = vec3(ambient); //color.rgb = vec3(scol); //color.rgb = diffuse_linear.rgb; frag_color.rgb = color.rgb; frag_color.a = bloom; }