diff options
Diffstat (limited to 'indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl')
| -rw-r--r-- | indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl | 114 |
1 files changed, 78 insertions, 36 deletions
diff --git a/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl b/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl index 681e52de2a..08f6ec63fe 100644 --- a/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl +++ b/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl @@ -2,13 +2,38 @@ * @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 frag_color; +#else +#define frag_color gl_FragColor +#endif + +VARYING vec4 vertex_color; +VARYING vec2 vary_texcoord0; + uniform sampler2DRectShadow shadowMap0; uniform sampler2DRectShadow shadowMap1; uniform sampler2DRectShadow shadowMap2; @@ -23,29 +48,16 @@ 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; +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; -vec4 getPosition(vec2 pos_screen) -{ - float depth = texture2DRect(depthMap, pos_screen.xy).a; - vec2 sc = pos_screen.xy*2.0; - sc /= screen_res; - sc -= vec2(1.0,1.0); - vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0); - vec4 pos = inv_proj * ndc; - pos.xyz /= pos.w; - pos.w = 1.0; - return pos; -} - float pcfShadow(sampler2DRectShadow shadowMap, vec4 stc, float scl) { stc.xyz /= stc.w; @@ -68,7 +80,7 @@ void main() vec2 frag = vary_fragcoord.xy/vary_fragcoord.z*0.5+0.5; frag *= screen_res; - float shadow = 1.0; + float shadow = 0.0; vec4 pos = vec4(vary_position, 1.0); vec4 spos = pos; @@ -77,36 +89,70 @@ void main() { vec4 lpos; - if (spos.z < -shadow_clip.z) + vec4 near_split = shadow_clip*-0.75; + vec4 far_split = shadow_clip*-1.25; + vec4 transition_domain = near_split-far_split; + float weight = 0.0; + + if (spos.z < near_split.z) { lpos = shadow_matrix[3]*spos; lpos.xy *= shadow_res; - shadow = pcfShadow(shadowMap3, lpos, 1.5); + + float w = 1.0; + w -= max(spos.z-far_split.z, 0.0)/transition_domain.z; + shadow += pcfShadow(shadowMap3, lpos, 0.25)*w; + weight += w; 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) + + if (spos.z < near_split.y && spos.z > far_split.z) { lpos = shadow_matrix[2]*spos; lpos.xy *= shadow_res; - shadow = pcfShadow(shadowMap2, lpos, 1.5); + + float w = 1.0; + w -= max(spos.z-far_split.y, 0.0)/transition_domain.y; + w -= max(near_split.z-spos.z, 0.0)/transition_domain.z; + shadow += pcfShadow(shadowMap2, lpos, 0.75)*w; + weight += w; } - else if (spos.z < -shadow_clip.x) + + if (spos.z < near_split.x && spos.z > far_split.y) { lpos = shadow_matrix[1]*spos; lpos.xy *= shadow_res; - shadow = pcfShadow(shadowMap1, lpos, 1.5); + + float w = 1.0; + w -= max(spos.z-far_split.x, 0.0)/transition_domain.x; + w -= max(near_split.y-spos.z, 0.0)/transition_domain.y; + shadow += pcfShadow(shadowMap1, lpos, 0.75)*w; + weight += w; } - else + + if (spos.z > far_split.x) { lpos = shadow_matrix[0]*spos; lpos.xy *= shadow_res; - shadow = pcfShadow(shadowMap0, lpos, 1.5); + + float w = 1.0; + w -= max(near_split.x-spos.z, 0.0)/transition_domain.x; + + shadow += pcfShadow(shadowMap0, lpos, 1.0)*w; + weight += w; } + + + shadow /= weight; + } + else + { + shadow = 1.0; } - vec4 diff = diffuseLookup(gl_TexCoord[0].xy); + vec4 diff = diffuseLookup(vary_texcoord0.xy); - vec4 col = vec4(vary_ambient + vary_directional.rgb*shadow, gl_Color.a); + vec4 col = vec4(vary_ambient + vary_directional.rgb*shadow, vertex_color.a); vec4 color = diff * col; color.rgb = atmosLighting(color.rgb); @@ -115,10 +161,6 @@ void main() color.rgb += diff.rgb * vary_pointlight_col.rgb; - //gl_FragColor = gl_Color; - gl_FragColor = color; - //gl_FragColor.r = 0.0; - //gl_FragColor = vec4(1,shadow,1,1); - + frag_color = color; } |