diff options
Diffstat (limited to 'indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl')
| -rw-r--r-- | indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl | 96 |
1 files changed, 74 insertions, 22 deletions
diff --git a/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl index 315139b415..8c4ccf9cb3 100644 --- a/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl +++ b/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl @@ -2,13 +2,35 @@ * @file sunLightF.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 + //class 2, shadows, no SSAO uniform sampler2DRect depthMap; @@ -29,13 +51,13 @@ uniform float ssao_max_radius; uniform float ssao_factor; uniform float ssao_factor_inv; -varying vec2 vary_fragcoord; -varying vec4 vary_light; +VARYING vec2 vary_fragcoord; uniform mat4 inv_proj; uniform vec2 screen_res; uniform vec2 shadow_res; uniform vec2 proj_shadow_res; +uniform vec3 sun_dir; uniform float shadow_bias; uniform float shadow_offset; @@ -109,15 +131,15 @@ void main() /*if (pos.z == 0.0) // do nothing for sky *FIX: REMOVE THIS IF/WHEN THE POSITION MAP IS BEING USED AS A STENCIL { - gl_FragColor = vec4(0.0); // doesn't matter + frag_color = vec4(0.0); // doesn't matter return; }*/ - float shadow = 1.0; - float dp_directional_light = max(0.0, dot(norm, vary_light.xyz)); + float shadow = 0.0; + float dp_directional_light = max(0.0, dot(norm, sun_dir.xyz)); vec3 shadow_pos = pos.xyz + displace*norm; - vec3 offset = vary_light.xyz * (1.0-dp_directional_light); + vec3 offset = sun_dir.xyz * (1.0-dp_directional_light); vec4 spos = vec4(shadow_pos+offset*shadow_offset, 1.0); @@ -132,32 +154,62 @@ 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, 0.25); + + 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, 0.5); + + 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, 0.75); + + 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, 1.0); + + 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; + // take the most-shadowed value out of these two: // * the blurred sun shadow in the light (shadow) map // * an unblurred dot product between the sun and this norm @@ -178,19 +230,19 @@ void main() shadow = 1.0; } - gl_FragColor[0] = shadow; - gl_FragColor[1] = 1.0; + frag_color[0] = shadow; + frag_color[1] = 1.0; spos = vec4(shadow_pos+norm*spot_shadow_offset, 1.0); //spotlight shadow 1 vec4 lpos = shadow_matrix[4]*spos; - gl_FragColor[2] = pcfShadow(shadowMap4, lpos, 0.8); + frag_color[2] = pcfShadow(shadowMap4, lpos, 0.8); //spotlight shadow 2 lpos = shadow_matrix[5]*spos; - gl_FragColor[3] = pcfShadow(shadowMap5, lpos, 0.8); + frag_color[3] = pcfShadow(shadowMap5, lpos, 0.8); - //gl_FragColor.rgb = pos.xyz; - //gl_FragColor.b = shadow; + //frag_color.rgb = pos.xyz; + //frag_color.b = shadow; } |