/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl
https://bitbucket.org/lindenlab/viewer-beta/ · GLSL · 130 lines · 80 code · 26 blank · 24 comment · 6 complexity · 79e60a3cdb4fe71ba962f71b94500244 MD5 · raw file
- /**
- * @file alphaF.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 gl_FragColor;
- #endif
- VARYING vec4 vertex_color;
- VARYING vec2 vary_texcoord0;
- uniform sampler2DRectShadow shadowMap0;
- uniform sampler2DRectShadow shadowMap1;
- uniform sampler2DRectShadow shadowMap2;
- uniform sampler2DRectShadow shadowMap3;
- uniform sampler2DRect depthMap;
- uniform mat4 shadow_matrix[6];
- uniform vec4 shadow_clip;
- uniform vec2 screen_res;
- uniform vec2 shadow_res;
- vec3 atmosLighting(vec3 light);
- vec3 scaleSoftClip(vec3 light);
- VARYING vec3 vary_ambient;
- VARYING vec3 vary_directional;
- VARYING vec3 vary_fragcoord;
- VARYING vec3 vary_position;
- VARYING vec3 vary_pointlight_col;
- uniform float shadow_bias;
- uniform mat4 inv_proj;
- float pcfShadow(sampler2DRectShadow shadowMap, vec4 stc, float scl)
- {
- stc.xyz /= stc.w;
- stc.z += shadow_bias;
-
- float cs = shadow2DRect(shadowMap, stc.xyz).x;
- float shadow = cs;
- shadow += max(shadow2DRect(shadowMap, stc.xyz+vec3(scl, scl, 0.0)).x, cs);
- shadow += max(shadow2DRect(shadowMap, stc.xyz+vec3(scl, -scl, 0.0)).x, cs);
- shadow += max(shadow2DRect(shadowMap, stc.xyz+vec3(-scl, scl, 0.0)).x, cs);
- shadow += max(shadow2DRect(shadowMap, stc.xyz+vec3(-scl, -scl, 0.0)).x, cs);
-
- return shadow/5.0;
- }
- void main()
- {
- vec2 frag = vary_fragcoord.xy/vary_fragcoord.z*0.5+0.5;
- frag *= screen_res;
-
- float shadow = 1.0;
- vec4 pos = vec4(vary_position, 1.0);
-
- vec4 spos = pos;
-
- if (spos.z > -shadow_clip.w)
- {
- vec4 lpos;
-
- if (spos.z < -shadow_clip.z)
- {
- lpos = shadow_matrix[3]*spos;
- lpos.xy *= shadow_res;
- shadow = pcfShadow(shadowMap3, lpos, 1.5);
- shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
- }
- else if (spos.z < -shadow_clip.y)
- {
- lpos = shadow_matrix[2]*spos;
- lpos.xy *= shadow_res;
- shadow = pcfShadow(shadowMap2, lpos, 1.5);
- }
- else if (spos.z < -shadow_clip.x)
- {
- lpos = shadow_matrix[1]*spos;
- lpos.xy *= shadow_res;
- shadow = pcfShadow(shadowMap1, lpos, 1.5);
- }
- else
- {
- lpos = shadow_matrix[0]*spos;
- lpos.xy *= shadow_res;
- shadow = pcfShadow(shadowMap0, lpos, 1.5);
- }
- }
-
- vec4 diff = diffuseLookup(vary_texcoord0.xy);
- vec4 col = vec4(vary_ambient + vary_directional.rgb*shadow, vertex_color.a);
- vec4 color = diff * col;
-
- color.rgb = atmosLighting(color.rgb);
- color.rgb = scaleSoftClip(color.rgb);
- color.rgb += diff.rgb * vary_pointlight_col.rgb;
- gl_FragColor = color;
- }