diff options
Diffstat (limited to 'indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl')
| -rwxr-xr-x[-rw-r--r--] | indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl | 99 |
1 files changed, 80 insertions, 19 deletions
diff --git a/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl index 258a9b7c40..5264d6e1b4 100644..100755 --- a/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl +++ b/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl @@ -2,11 +2,35 @@ * @file blurLightF.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 +#ifdef DEFINE_GL_FRAGCOLOR +out vec4 frag_color; +#else +#define frag_color gl_FragColor +#endif + uniform sampler2DRect depthMap; uniform sampler2DRect normalMap; uniform sampler2DRect lightMap; @@ -17,14 +41,14 @@ uniform vec2 delta; uniform vec3 kern[4]; uniform float kern_scale; -varying vec2 vary_fragcoord; +VARYING vec2 vary_fragcoord; uniform mat4 inv_proj; uniform vec2 screen_res; vec4 getPosition(vec2 pos_screen) { - float depth = texture2DRect(depthMap, pos_screen.xy).a; + float depth = texture2DRect(depthMap, pos_screen.xy).r; vec2 sc = pos_screen.xy*2.0; sc /= screen_res; sc -= vec2(1.0,1.0); @@ -35,47 +59,84 @@ vec4 getPosition(vec2 pos_screen) return pos; } +vec2 encode_normal(vec3 n) +{ + float f = sqrt(8 * n.z + 8); + return n.xy / f + 0.5; +} + +vec3 decode_normal (vec2 enc) +{ + vec2 fenc = enc*4-2; + float f = dot(fenc,fenc); + float g = sqrt(1-f/4); + vec3 n; + n.xy = fenc*g; + n.z = 1-f/2; + return n; +} + void main() { - vec3 norm = texture2DRect(normalMap, vary_fragcoord.xy).xyz; - norm = vec3((norm.xy-0.5)*2.0,norm.z); // unpack norm - vec3 pos = getPosition(vary_fragcoord.xy).xyz; - vec4 ccol = texture2DRect(lightMap, vary_fragcoord.xy).rgba; + vec2 tc = vary_fragcoord.xy; + vec3 norm = texture2DRect(normalMap, tc).xyz; + norm = decode_normal(norm.xy); // unpack norm + + vec3 pos = getPosition(tc).xyz; + vec4 ccol = texture2DRect(lightMap, tc).rgba; vec2 dlt = kern_scale * delta / (1.0+norm.xy*norm.xy); - dlt /= max(-pos.z*dist_factor, 1.0); vec2 defined_weight = kern[0].xy; // special case the first (centre) sample's weight in the blur; we have to sample it anyway so we get it for 'free' vec4 col = defined_weight.xyxx * ccol; - + + // relax tolerance according to distance to avoid speckling artifacts, as angles and distances are a lot more abrupt within a small screen area at larger distances + float pointplanedist_tolerance_pow2 = pos.z*pos.z*0.00005; + + // perturb sampling origin slightly in screen-space to hide edge-ghosting artifacts where smoothing radius is quite large + float tc_mod = 0.5*(tc.x + tc.y); // mod(tc.x+tc.y,2) + tc_mod -= floor(tc_mod); + tc_mod *= 2.0; + tc += ( (tc_mod - 0.5) * kern[1].z * dlt * 0.5 ); + for (int i = 1; i < 4; i++) { - vec2 tc = vary_fragcoord.xy + kern[i].z*dlt; - vec3 samppos = getPosition(tc).xyz; + vec2 samptc = tc + kern[i].z*dlt; + vec3 samppos = getPosition(samptc).xyz; + float d = dot(norm.xyz, samppos.xyz-pos.xyz);// dist from plane - if (d*d <= 0.003) + + if (d*d <= pointplanedist_tolerance_pow2) { - col += texture2DRect(lightMap, tc)*kern[i].xyxx; + col += texture2DRect(lightMap, samptc)*kern[i].xyxx; defined_weight += kern[i].xy; } } + for (int i = 1; i < 4; i++) { - vec2 tc = vary_fragcoord.xy - kern[i].z*dlt; - vec3 samppos = getPosition(tc).xyz; + vec2 samptc = tc - kern[i].z*dlt; + vec3 samppos = getPosition(samptc).xyz; + float d = dot(norm.xyz, samppos.xyz-pos.xyz);// dist from plane - if (d*d <= 0.003) + + if (d*d <= pointplanedist_tolerance_pow2) { - col += texture2DRect(lightMap, tc)*kern[i].xyxx; + col += texture2DRect(lightMap, samptc)*kern[i].xyxx; defined_weight += kern[i].xy; } } - - col /= defined_weight.xyxx; + col.y *= col.y; - gl_FragColor = col; + frag_color = col; + +#ifdef IS_AMD_CARD + // If it's AMD make sure the GLSL compiler sees the arrays referenced once by static index. Otherwise it seems to optimise the storage awawy which leads to unfun crashes and artifacts. + vec3 dummy1 = kern[0]; + vec3 dummy2 = kern[3]; +#endif } |