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-rw-r--r--indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl80
1 files changed, 21 insertions, 59 deletions
diff --git a/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
index a0026edcd2..7423347346 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
@@ -7,6 +7,8 @@
#extension GL_ARB_texture_rectangle : enable
+//class 2, shadows, no SSAO
+
uniform sampler2DRect depthMap;
uniform sampler2DRect normalMap;
uniform sampler2DRectShadow shadowMap0;
@@ -39,6 +41,9 @@ uniform vec2 proj_shadow_res;
uniform float shadow_bias;
uniform float shadow_offset;
+uniform float spot_shadow_bias;
+uniform float spot_shadow_offset;
+
vec4 getPosition(vec2 pos_screen)
{
float depth = texture2DRect(depthMap, pos_screen.xy).a;
@@ -52,56 +57,6 @@ vec4 getPosition(vec2 pos_screen)
return pos;
}
-//calculate decreases in ambient lighting when crowded out (SSAO)
-float calcAmbientOcclusion(vec4 pos, vec3 norm)
-{
- vec2 kern[8];
- // exponentially (^2) distant occlusion samples spread around origin
- kern[0] = vec2(-1.0, 0.0) * 0.125*0.125;
- kern[1] = vec2(1.0, 0.0) * 0.250*0.250;
- kern[2] = vec2(0.0, 1.0) * 0.375*0.375;
- kern[3] = vec2(0.0, -1.0) * 0.500*0.500;
- kern[4] = vec2(0.7071, 0.7071) * 0.625*0.625;
- kern[5] = vec2(-0.7071, -0.7071) * 0.750*0.750;
- kern[6] = vec2(-0.7071, 0.7071) * 0.875*0.875;
- kern[7] = vec2(0.7071, -0.7071) * 1.000*1.000;
-
- vec2 pos_screen = vary_fragcoord.xy;
- vec3 pos_world = pos.xyz;
- vec2 noise_reflect = texture2D(noiseMap, vary_fragcoord.xy/128.0).xy;
-
- float angle_hidden = 0.0;
- int points = 0;
-
- float scale = min(ssao_radius / -pos_world.z, ssao_max_radius);
-
- // it was found that keeping # of samples a constant was the fastest, probably due to compiler optimizations (unrolling?)
- for (int i = 0; i < 8; i++)
- {
- vec2 samppos_screen = pos_screen + scale * reflect(kern[i], noise_reflect);
- vec3 samppos_world = getPosition(samppos_screen).xyz;
-
- vec3 diff = pos_world - samppos_world;
- float dist2 = dot(diff, diff);
-
- // assume each sample corresponds to an occluding sphere with constant radius, constant x-sectional area
- // --> solid angle shrinking by the square of distance
- //radius is somewhat arbitrary, can approx with just some constant k * 1 / dist^2
- //(k should vary inversely with # of samples, but this is taken care of later)
-
- //if (dot((samppos_world - 0.05*norm - pos_world), norm) > 0.0) // -0.05*norm to shift sample point back slightly for flat surfaces
- // angle_hidden += min(1.0/dist2, ssao_factor_inv); // dist != 0 follows from conditional. max of 1.0 (= ssao_factor_inv * ssao_factor)
- angle_hidden = angle_hidden + float(dot((samppos_world - 0.05*norm - pos_world), norm) > 0.0) * min(1.0/dist2, ssao_factor_inv);
-
- // 'blocked' samples (significantly closer to camera relative to pos_world) are "no data", not "no occlusion"
- points = points + int(diff.z > -1.0);
- }
-
- angle_hidden = min(ssao_factor*angle_hidden/float(points), 1.0);
-
- return (1.0 - (float(points != 0) * angle_hidden));
-}
-
float pcfShadow(sampler2DRectShadow shadowMap, vec4 stc, float scl)
{
stc.xyz /= stc.w;
@@ -123,7 +78,7 @@ float pcfShadow(sampler2DRectShadow shadowMap, vec4 stc, float scl)
float pcfShadow(sampler2DShadow shadowMap, vec4 stc, float scl)
{
stc.xyz /= stc.w;
- stc.z += shadow_bias*scl;
+ stc.z += spot_shadow_bias*scl;
float cs = shadow2D(shadowMap, stc.xyz).x;
float shadow = cs;
@@ -134,8 +89,7 @@ float pcfShadow(sampler2DShadow shadowMap, vec4 stc, float scl)
shadow += max(shadow2D(shadowMap, stc.xyz+vec3(off.x, -off.y, 0.0)).x, cs);
shadow += max(shadow2D(shadowMap, stc.xyz+vec3(-off.x, off.y, 0.0)).x, cs);
shadow += max(shadow2D(shadowMap, stc.xyz+vec3(-off.x, -off.y, 0.0)).x, cs);
-
-
+
return shadow/5.0;
//return shadow;
@@ -149,7 +103,10 @@ void main()
vec4 pos = getPosition(pos_screen);
- vec3 norm = texture2DRect(normalMap, pos_screen).xyz*2.0-1.0;
+ vec4 nmap4 = texture2DRect(normalMap, pos_screen);
+ nmap4 = vec4((nmap4.xy-0.5)*2.0,nmap4.z,nmap4.w); // unpack norm
+ float displace = nmap4.w;
+ vec3 norm = nmap4.xyz;
/*if (pos.z == 0.0) // do nothing for sky *FIX: REMOVE THIS IF/WHEN THE POSITION MAP IS BEING USED AS A STENCIL
{
@@ -158,9 +115,12 @@ void main()
}*/
float shadow = 1.0;
- float dp_directional_light = max(0.0, dot(norm, vary_light.xyz));
+ float dp_directional_light = max(0.0, dot(norm, vary_light.xyz));
- vec4 spos = vec4(pos.xyz + vary_light.xyz * (1.0-dp_directional_light)*shadow_offset, 1.0);
+ vec3 shadow_pos = pos.xyz + displace*norm;
+ vec3 offset = vary_light.xyz * (1.0-dp_directional_light);
+
+ vec4 spos = vec4(shadow_pos+offset*shadow_offset, 1.0);
if (spos.z > -shadow_clip.w)
{
@@ -220,15 +180,17 @@ void main()
}
gl_FragColor[0] = shadow;
- gl_FragColor[1] = calcAmbientOcclusion(pos, norm);
+ gl_FragColor[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, 0.1).x;
+ gl_FragColor[2] = pcfShadow(shadowMap4, lpos, 0.8);
//spotlight shadow 2
lpos = shadow_matrix[5]*spos;
- gl_FragColor[3] = pcfShadow(shadowMap5, lpos, 0.1).x;
+ gl_FragColor[3] = pcfShadow(shadowMap5, lpos, 0.8);
//gl_FragColor.rgb = pos.xyz;
//gl_FragColor.b = shadow;