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authorTofu Linden <tofu.linden@lindenlab.com>2010-05-09 15:02:10 +0100
committerTofu Linden <tofu.linden@lindenlab.com>2010-05-09 15:02:10 +0100
commit12d3ba4baee93bcb024fbeee0d6f05df6d02935f (patch)
tree890058e8315e803a0d2f740a9fe4bddcd53706f5 /indra/newview/app_settings/shaders/class3
parent08755849ab126c13580f3af38721f83cb5ce01ce (diff)
Rejig deferred normal-map packing a little, to double its accuracy for free.
Diffstat (limited to 'indra/newview/app_settings/shaders/class3')
-rw-r--r--indra/newview/app_settings/shaders/class3/deferred/giDownsampleF.glsl10
-rw-r--r--indra/newview/app_settings/shaders/class3/deferred/giF.glsl3
-rw-r--r--indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl7
-rw-r--r--indra/newview/app_settings/shaders/class3/deferred/treeF.glsl3
4 files changed, 15 insertions, 8 deletions
diff --git a/indra/newview/app_settings/shaders/class3/deferred/giDownsampleF.glsl b/indra/newview/app_settings/shaders/class3/deferred/giDownsampleF.glsl
index 7325825d6d..66606233cd 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/giDownsampleF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/giDownsampleF.glsl
@@ -44,7 +44,8 @@ float getDepth(vec2 pos_screen)
void main()
{
- vec3 norm = texture2DRect(normalMap, vary_fragcoord.xy).xyz*2.0-1.0;
+ vec3 norm = texture2DRect(normalMap, vary_fragcoord.xy).xyz;
+ norm = vec3((norm.xy-0.5)*2.0,norm.z); // unpack norm
float depth = getDepth(vary_fragcoord.xy);
vec3 ccol = texture2DRect(giLightMap, vary_fragcoord.xy).rgb;
@@ -56,9 +57,10 @@ void main()
for (int i = 0; i < kern_length; i++)
{
vec2 tc = vary_fragcoord.xy + kern[i].y*dlt;
- vec3 sampNorm = texture2DRect(normalMap, tc.xy).xyz*2.0-1.0;
-
- float d = dot(norm.xyz, sampNorm);
+ vec3 sampNorm = texture2DRect(normalMap, tc.xy).xyz;
+ sampNorm = vec3((sampNorm.xy-0.5)*2.0,sampNorm.z); // unpack norm
+
+ float d = dot(norm.xyz, sampNorm);
if (d > 0.5)
{
diff --git a/indra/newview/app_settings/shaders/class3/deferred/giF.glsl b/indra/newview/app_settings/shaders/class3/deferred/giF.glsl
index 939710cb56..1b8354dbd1 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/giF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/giF.glsl
@@ -178,7 +178,8 @@ void main()
float rad = gi_range*0.5;
- vec3 norm = texture2DRect(normalMap, pos_screen).xyz*2.0-1.0;
+ vec3 norm = texture2DRect(normalMap, pos_screen).xyz;
+ norm = vec3((norm.xy-0.5)*2.0,norm.z); // unpack norm
float dist = max(length(pos.xyz)-rad, 0.0);
float da = clamp(1.0-dist/rad, 0.0, 1.0);
diff --git a/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
index 5298079af7..c88edd0a60 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
@@ -259,7 +259,8 @@ void main()
vec2 tc = vary_fragcoord.xy;
float depth = texture2DRect(depthMap, tc.xy).a;
vec3 pos = getPosition_d(tc, depth).xyz;
- vec3 norm = texture2DRect(normalMap, tc).xyz*2.0-1.0;
+ vec3 norm = texture2DRect(normalMap, tc).xyz;
+ norm = vec3((norm.xy-0.5)*2.0,norm.z); // unpack norm
//vec3 nz = texture2D(noiseMap, vary_fragcoord.xy/128.0).xyz;
float da = max(dot(norm.xyz, vary_light.xyz), 0.0);
@@ -314,7 +315,9 @@ void main()
float refdepth = texture2DRect(depthMap, ref2d).a;
vec3 refpos = getPosition_d(ref2d, refdepth).xyz;
float refshad = texture2DRect(lightMap, ref2d).r;
- vec3 refn = normalize(texture2DRect(normalMap, ref2d).rgb * 2.0 - 1.0);
+ vec3 refn = texture2DRect(normalMap, ref2d).rgb;
+ refn = vec3((refn.xy-0.5)*2.0,refn.z); // unpack norm
+ refn = normalize(refn);
// figure out how appropriate our guess actually was
float refapprop = max(0.0, dot(-refnorm, normalize(pos - refpos)));
// darken reflections from points which face away from the reflected ray - our guess was a back-face
diff --git a/indra/newview/app_settings/shaders/class3/deferred/treeF.glsl b/indra/newview/app_settings/shaders/class3/deferred/treeF.glsl
index 258acee08c..5b33ea5bfe 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/treeF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/treeF.glsl
@@ -14,5 +14,6 @@ void main()
vec4 col = texture2D(diffuseMap, gl_TexCoord[0].xy);
gl_FragData[0] = vec4(gl_Color.rgb*col.rgb, col.a <= 0.5 ? 0.0 : 0.005);
gl_FragData[1] = vec4(0,0,0,0);
- gl_FragData[2] = vec4(normalize(vary_normal)*0.5+0.5, 0.0);
+ vec3 nvn = normalize(vary_normal);
+ gl_FragData[2] = vec4(nvn.xy * 0.5 + 0.5, nvn.z, 0.0);
}