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-rw-r--r--indra/newview/app_settings/shaders/class1/deferred/deferredUtil.glsl332
1 files changed, 169 insertions, 163 deletions
diff --git a/indra/newview/app_settings/shaders/class1/deferred/deferredUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/deferredUtil.glsl
index 43f0034874..ec05dab57f 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/deferredUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/deferredUtil.glsl
@@ -1,5 +1,5 @@
/**
- * @file shadowUtil.glsl
+ * @file class1/deferred/deferredUtil.glsl
*
* $LicenseInfo:firstyear=2007&license=viewerlgpl$
* Second Life Viewer Source Code
@@ -39,6 +39,7 @@ uniform float ssao_factor;
uniform float ssao_factor_inv;
uniform vec3 sun_dir;
+uniform vec3 moon_dir;
uniform vec2 shadow_res;
uniform vec2 proj_shadow_res;
uniform mat4 shadow_matrix[6];
@@ -55,7 +56,7 @@ vec3 decode_normal(vec2 enc);
vec2 getScreenCoordinate(vec2 screenpos)
{
- vec2 sc = screenpos.xy * 2.0;
+ vec2 sc = screenpos.xy * 2.0;
if (screen_res.x > 0 && screen_res.y > 0)
{
sc /= screen_res;
@@ -72,41 +73,41 @@ vec3 getNorm(vec2 screenpos)
float getDepth(vec2 pos_screen)
{
float depth = texture2DRect(depthMap, pos_screen).r;
- return depth;
+ return depth;
}
vec4 getPosition(vec2 pos_screen)
{
float depth = getDepth(pos_screen);
- vec2 sc = getScreenCoordinate(pos_screen);
- vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0);
- vec4 pos = inv_proj * ndc;
- pos /= pos.w;
- pos.w = 1.0;
- return pos;
+ vec2 sc = getScreenCoordinate(pos_screen);
+ vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0);
+ vec4 pos = inv_proj * ndc;
+ pos /= pos.w;
+ pos.w = 1.0;
+ return pos;
}
#if USE_DEFERRED_SHADER_API
vec4 getPositionWithDepth(vec2 pos_screen, float depth)
{
- vec2 sc = getScreenCoordinate(pos_screen);
- vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0);
- vec4 pos = inv_proj * ndc;
- pos /= pos.w;
- pos.w = 1.0;
- return pos;
+ vec2 sc = getScreenCoordinate(pos_screen);
+ vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0);
+ vec4 pos = inv_proj * ndc;
+ pos /= pos.w;
+ pos.w = 1.0;
+ return pos;
}
float pcfShadow(sampler2DShadow shadowMap, vec4 stc, float bias_scale, vec2 pos_screen)
{
- stc.xyz /= stc.w;
- stc.z += shadow_bias * bias_scale;
-
- stc.x = floor(stc.x*pos_screen.x + fract(stc.y*shadow_res.y*12345))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
-
- float cs = shadow2D(shadowMap, stc.xyz).x;
- float shadow = cs;
+ stc.xyz /= stc.w;
+ stc.z += shadow_bias * bias_scale;
+
+ stc.x = floor(stc.x*pos_screen.x + fract(stc.y*shadow_res.y*12345))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
+
+ float cs = shadow2D(shadowMap, stc.xyz).x;
+ float shadow = cs;
shadow += shadow2D(shadowMap, stc.xyz+vec3(2.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
shadow += shadow2D(shadowMap, stc.xyz+vec3(1.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
shadow += shadow2D(shadowMap, stc.xyz+vec3(-1.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
@@ -116,85 +117,90 @@ float pcfShadow(sampler2DShadow shadowMap, vec4 stc, float bias_scale, vec2 pos_
float pcfSpotShadow(sampler2DShadow shadowMap, vec4 stc, float bias_scale, vec2 pos_screen)
{
- stc.xyz /= stc.w;
- stc.z += spot_shadow_bias * bias_scale;
- stc.x = floor(proj_shadow_res.x * stc.x + fract(pos_screen.y*0.666666666)) / proj_shadow_res.x; // snap
-
- float cs = shadow2D(shadowMap, stc.xyz).x;
- float shadow = cs;
-
- vec2 off = 1.0/proj_shadow_res;
- off.y *= 1.5;
-
- shadow += shadow2D(shadowMap, stc.xyz+vec3(off.x*2.0, off.y, 0.0)).x;
- shadow += shadow2D(shadowMap, stc.xyz+vec3(off.x, -off.y, 0.0)).x;
- shadow += shadow2D(shadowMap, stc.xyz+vec3(-off.x, off.y, 0.0)).x;
- shadow += shadow2D(shadowMap, stc.xyz+vec3(-off.x*2.0, -off.y, 0.0)).x;
+ stc.xyz /= stc.w;
+ stc.z += spot_shadow_bias * bias_scale;
+ stc.x = floor(proj_shadow_res.x * stc.x + fract(pos_screen.y*0.666666666)) / proj_shadow_res.x; // snap
+
+ float cs = shadow2D(shadowMap, stc.xyz).x;
+ float shadow = cs;
+
+ vec2 off = 1.0/proj_shadow_res;
+ off.y *= 1.5;
+
+ shadow += shadow2D(shadowMap, stc.xyz+vec3(off.x*2.0, off.y, 0.0)).x;
+ shadow += shadow2D(shadowMap, stc.xyz+vec3(off.x, -off.y, 0.0)).x;
+ shadow += shadow2D(shadowMap, stc.xyz+vec3(-off.x, off.y, 0.0)).x;
+ shadow += shadow2D(shadowMap, stc.xyz+vec3(-off.x*2.0, -off.y, 0.0)).x;
return shadow*0.2;
}
float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen)
{
- float dp_directional_light = max(0.0, dot(sun_dir.xyz, norm));
- vec3 offset = sun_dir.xyz * (1.0-dp_directional_light);
- vec3 shadow_pos = pos.xyz + (offset * shadow_bias);
+ float dp_sun = max(0.0, dot(sun_dir.xyz, norm));
+ float dp_moon = max(0.0, dot(moon_dir.xyz, norm));
+ float dp_directional_light = max(dp_sun,dp_moon);
+ dp_directional_light = clamp(dp_directional_light, 0.0, 1.0);
+
+ vec3 light_dir = (dp_moon > dp_sun) ? moon_dir : sun_dir;
+ vec3 offset = light_dir * (1.0-dp_directional_light);
+ vec3 shadow_pos = pos.xyz + (offset * shadow_bias);
float shadow = 0.0f;
- vec4 spos = vec4(shadow_pos,1.0);
- if (spos.z > -shadow_clip.w)
- {
- vec4 lpos;
- 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;
-
- float w = 1.0;
- w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
- shadow += pcfShadow(shadowMap3, lpos, 0.5, pos_screen)*w;
- weight += w;
- shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
- }
-
- if (spos.z < near_split.y && spos.z > far_split.z)
- {
- lpos = shadow_matrix[2]*spos;
-
- 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, pos_screen)*w;
- weight += w;
- }
-
- if (spos.z < near_split.x && spos.z > far_split.y)
- {
- lpos = shadow_matrix[1]*spos;
-
- 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, 0.88, pos_screen)*w;
- weight += w;
- }
-
- if (spos.z > far_split.x)
- {
- lpos = shadow_matrix[0]*spos;
-
- float w = 1.0;
- w -= max(near_split.x-spos.z, 0.0)/transition_domain.x;
-
- shadow += pcfShadow(shadowMap0, lpos, 1.0, pos_screen)*w;
- weight += w;
- }
-
- shadow /= weight;
- }
+ vec4 spos = vec4(shadow_pos,1.0);
+ if (spos.z > -shadow_clip.w)
+ {
+ vec4 lpos;
+ 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;
+
+ float w = 1.0;
+ w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
+ shadow += pcfShadow(shadowMap3, lpos, 0.5, pos_screen)*w;
+ weight += w;
+ shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
+ }
+
+ if (spos.z < near_split.y && spos.z > far_split.z)
+ {
+ lpos = shadow_matrix[2]*spos;
+
+ 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, pos_screen)*w;
+ weight += w;
+ }
+
+ if (spos.z < near_split.x && spos.z > far_split.y)
+ {
+ lpos = shadow_matrix[1]*spos;
+
+ 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, 0.88, pos_screen)*w;
+ weight += w;
+ }
+
+ if (spos.z > far_split.x)
+ {
+ lpos = shadow_matrix[0]*spos;
+
+ float w = 1.0;
+ w -= max(near_split.x-spos.z, 0.0)/transition_domain.x;
+
+ shadow += pcfShadow(shadowMap0, lpos, 1.0, pos_screen)*w;
+ weight += w;
+ }
+
+ shadow /= weight;
+ }
return shadow;
}
@@ -203,88 +209,88 @@ float sampleSpotShadow(vec3 pos, vec3 norm, int index, vec2 pos_screen)
float shadow = 0.0f;
pos += norm * spot_shadow_offset;
- vec4 spos = vec4(pos,1.0);
- if (spos.z > -shadow_clip.w)
- {
- vec4 lpos;
-
- 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;
+ vec4 spos = vec4(pos,1.0);
+ if (spos.z > -shadow_clip.w)
+ {
+ vec4 lpos;
+
+ 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;
{
- lpos = shadow_matrix[4 + index]*spos;
- float w = 1.0;
- w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
-
- shadow += pcfSpotShadow((index == 0) ? shadowMap4 : shadowMap5, lpos, 0.8, spos.xy)*w;
- weight += w;
- shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
- }
-
- shadow /= weight;
- }
+ lpos = shadow_matrix[4 + index]*spos;
+ float w = 1.0;
+ w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
+
+ shadow += pcfSpotShadow((index == 0) ? shadowMap4 : shadowMap5, lpos, 0.8, spos.xy)*w;
+ weight += w;
+ shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
+ }
+
+ shadow /= weight;
+ }
return shadow;
}
vec2 getKern(int i)
{
- 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 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;
- return kern[i];
+ return kern[i];
}
//calculate decreases in ambient lighting when crowded out (SSAO)
float calcAmbientOcclusion(vec4 pos, vec3 norm, vec2 pos_screen)
{
- float ret = 1.0;
- vec3 pos_world = pos.xyz;
- vec2 noise_reflect = texture2D(noiseMap, pos_screen.xy/128.0).xy;
-
- float angle_hidden = 0.0;
- float 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(getKern(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)
-
- float funky_val = (dot((samppos_world - 0.05*norm - pos_world), norm) > 0.0) ? 1.0 : 0.0;
- angle_hidden = angle_hidden + funky_val * min(1.0/dist2, ssao_factor_inv);
-
- // 'blocked' samples (significantly closer to camera relative to pos_world) are "no data", not "no occlusion"
- float diffz_val = (diff.z > -1.0) ? 1.0 : 0.0;
- points = points + diffz_val;
- }
-
- angle_hidden = min(ssao_factor*angle_hidden/points, 1.0);
-
- float points_val = (points > 0.0) ? 1.0 : 0.0;
- ret = (1.0 - (points_val * angle_hidden));
-
- ret = max(ret, 0.0);
- return min(ret, 1.0);
+ float ret = 1.0;
+ vec3 pos_world = pos.xyz;
+ vec2 noise_reflect = texture2D(noiseMap, pos_screen.xy/128.0).xy;
+
+ float angle_hidden = 0.0;
+ float 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(getKern(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)
+
+ float funky_val = (dot((samppos_world - 0.05*norm - pos_world), norm) > 0.0) ? 1.0 : 0.0;
+ angle_hidden = angle_hidden + funky_val * min(1.0/dist2, ssao_factor_inv);
+
+ // 'blocked' samples (significantly closer to camera relative to pos_world) are "no data", not "no occlusion"
+ float diffz_val = (diff.z > -1.0) ? 1.0 : 0.0;
+ points = points + diffz_val;
+ }
+
+ angle_hidden = min(ssao_factor*angle_hidden/points, 1.0);
+
+ float points_val = (points > 0.0) ? 1.0 : 0.0;
+ ret = (1.0 - (points_val * angle_hidden));
+
+ ret = max(ret, 0.0);
+ return min(ret, 1.0);
}
#endif
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