From 930de04f51212195a2c7a877d235d4106f4d37e2 Mon Sep 17 00:00:00 2001 From: Dave Parks Date: Tue, 2 Jul 2013 18:02:28 -0500 Subject: NORSPEC-287 Make alpha sRGB correction curves match OpenGL spec. --- .../shaders/class1/deferred/alphaF.glsl | 29 ++++++++++++++++++---- .../shaders/class1/deferred/materialF.glsl | 28 ++++++++++++++++++--- .../shaders/class1/deferred/multiPointLightF.glsl | 2 ++ .../shaders/class1/deferred/multiSpotLightF.glsl | 25 +++++++++++++++---- .../class1/deferred/postDeferredGammaCorrect.glsl | 13 +++++++++- .../shaders/class1/deferred/softenLightF.glsl | 26 +++++++++++++++++-- 6 files changed, 107 insertions(+), 16 deletions(-) (limited to 'indra/newview/app_settings/shaders/class1/deferred') diff --git a/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl b/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl index 143af0576c..e80e4b0fcf 100755 --- a/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl +++ b/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl @@ -135,6 +135,26 @@ float pcfShadow(sampler2DShadow shadowMap, vec4 stc) } #endif +vec3 srgb_to_linear(vec3 cs) +{ + +/* { cs / 12.92, cs <= 0.04045 + cl = { + { ((cs + 0.055)/1.055)^2.4, cs > 0.04045*/ + + return pow((cs+vec3(0.055))/vec3(1.055), vec3(2.4)); +} + +vec3 linear_to_srgb(vec3 cl) +{ + /*{ 0.0, 0 <= cl + { 12.92 * c, 0 < cl < 0.0031308 + cs = { 1.055 * cl^0.41666 - 0.055, 0.0031308 <= cl < 1 + { 1.0, cl >= 1*/ + + return 1.055 * pow(cl, vec3(0.41666)) - 0.055; +} + void main() { @@ -217,7 +237,7 @@ void main() #endif vec4 gamma_diff = diff; - diff.rgb = pow(diff.rgb, vec3(2.2f, 2.2f, 2.2f)); + diff.rgb = srgb_to_linear(diff.rgb); #ifdef USE_VERTEX_COLOR float vertex_color_alpha = vertex_color.a; @@ -243,9 +263,8 @@ void main() color.rgb = scaleSoftClip(color.rgb); - color.rgb = pow(color.rgb, vec3(2.2)); + color.rgb = srgb_to_linear(color.rgb); col = vec4(0,0,0,0); - #define LIGHT_LOOP(i) col.rgb += light_diffuse[i].rgb * calcPointLightOrSpotLight(pos.xyz, normal, light_position[i], light_direction[i].xyz, light_attenuation[i].x, light_attenuation[i].y, light_attenuation[i].z); @@ -257,9 +276,9 @@ void main() LIGHT_LOOP(6) LIGHT_LOOP(7) - color.rgb += diff.rgb * pow(vary_pointlight_col, vec3(2.2)) * col.rgb; + color.rgb += diff.rgb * srgb_to_linear(vary_pointlight_col) * col.rgb; - color.rgb = pow(color.rgb, vec3(1.0/2.2)); + color.rgb = linear_to_srgb(color.rgb); frag_color = color; } diff --git a/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl b/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl index 53ade8ea64..027c6eeadb 100644 --- a/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl +++ b/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl @@ -30,6 +30,28 @@ uniform float emissive_brightness; + +vec3 srgb_to_linear(vec3 cs) +{ + +/* { cs / 12.92, cs <= 0.04045 + cl = { + { ((cs + 0.055)/1.055)^2.4, cs > 0.04045*/ + + return pow((cs+vec3(0.055))/vec3(1.055), vec3(2.4)); +} + +vec3 linear_to_srgb(vec3 cl) +{ + /*{ 0.0, 0 <= cl + { 12.92 * c, 0 < cl < 0.0031308 + cs = { 1.055 * cl^0.41666 - 0.055, 0.0031308 <= cl < 1 + { 1.0, cl >= 1*/ + + return 1.055 * pow(cl, vec3(0.41666)) - 0.055; +} + + #if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND) #ifdef DEFINE_GL_FRAGCOLOR @@ -459,7 +481,7 @@ void main() #if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND) vec3 old_diffcol = diffcol.rgb; - diffcol.rgb = pow(diffcol.rgb, vec3(2.2)); + diffcol.rgb = srgb_to_linear(diffcol.rgb); #endif #if HAS_SPECULAR_MAP @@ -648,7 +670,7 @@ void main() col = mix(scaleSoftClip(col), fullbrightScaleSoftClip(col), diffuse.a); //convert to linear space before adding local lights - col = pow(col, vec3(2.2)); + col = srgb_to_linear(col); vec3 npos = normalize(-pos.xyz); @@ -665,7 +687,7 @@ void main() //convert to gamma space for display on screen - col.rgb = pow(col.rgb, vec3(1.0/2.2)); + col.rgb = linear_to_srgb(col.rgb); frag_color.rgb = col.rgb; glare = min(glare, 1.0); diff --git a/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl index a955ef6e9d..3ba6de8b76 100755 --- a/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl +++ b/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl @@ -99,6 +99,7 @@ void main() norm = normalize(norm); vec4 spec = texture2DRect(specularRect, frag.xy); vec3 diff = texture2DRect(diffuseRect, frag.xy).rgb; + float noise = texture2D(noiseMap, frag.xy/128.0).b; vec3 out_col = vec3(0,0,0); vec3 npos = normalize(-pos); @@ -157,6 +158,7 @@ void main() } } + frag_color.rgb = out_col; frag_color.a = 0.0; } diff --git a/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl index 7d39ad7bc1..11220bfa47 100755 --- a/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl +++ b/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl @@ -84,15 +84,30 @@ vec3 decode_normal (vec2 enc) return n; } -vec4 correctWithGamma(vec4 col) +vec3 srgb_to_linear(vec3 cs) { - return vec4(pow(col.rgb, vec3(2.2)), col.a); + +/* { cs / 12.92, cs <= 0.04045 + cl = { + { ((cs + 0.055)/1.055)^2.4, cs > 0.04045*/ + + return pow((cs+vec3(0.055))/vec3(1.055), vec3(2.4)); +} + +vec3 linear_to_srgb(vec3 cl) +{ + /*{ 0.0, 0 <= cl + { 12.92 * c, 0 < cl < 0.0031308 + cs = { 1.055 * cl^0.41666 - 0.055, 0.0031308 <= cl < 1 + { 1.0, cl >= 1*/ + + return 1.055 * pow(cl, vec3(0.41666)) - 0.055; } vec4 texture2DLodSpecular(sampler2D projectionMap, vec2 tc, float lod) { vec4 ret = texture2DLod(projectionMap, tc, lod); - ret = correctWithGamma(ret); + ret.rgb = srgb_to_linear(ret.rgb); vec2 dist = tc-vec2(0.5); @@ -108,7 +123,7 @@ vec4 texture2DLodSpecular(sampler2D projectionMap, vec2 tc, float lod) vec4 texture2DLodDiffuse(sampler2D projectionMap, vec2 tc, float lod) { vec4 ret = texture2DLod(projectionMap, tc, lod); - ret = correctWithGamma(ret); + ret.rgb = srgb_to_linear(ret.rgb); vec2 dist = vec2(0.5) - abs(tc-vec2(0.5)); @@ -126,7 +141,7 @@ vec4 texture2DLodDiffuse(sampler2D projectionMap, vec2 tc, float lod) vec4 texture2DLodAmbient(sampler2D projectionMap, vec2 tc, float lod) { vec4 ret = texture2DLod(projectionMap, tc, lod); - ret = correctWithGamma(ret); + ret.rgb = srgb_to_linear(ret.rgb); vec2 dist = tc-vec2(0.5); diff --git a/indra/newview/app_settings/shaders/class1/deferred/postDeferredGammaCorrect.glsl b/indra/newview/app_settings/shaders/class1/deferred/postDeferredGammaCorrect.glsl index 6f2cfae6d2..a3610bfffa 100644 --- a/indra/newview/app_settings/shaders/class1/deferred/postDeferredGammaCorrect.glsl +++ b/indra/newview/app_settings/shaders/class1/deferred/postDeferredGammaCorrect.glsl @@ -38,9 +38,20 @@ VARYING vec2 vary_fragcoord; uniform float texture_gamma; +vec3 linear_to_srgb(vec3 cl) +{ + /*{ 0.0, 0 <= cl + { 12.92 * c, 0 < cl < 0.0031308 + cs = { 1.055 * cl^0.41666 - 0.055, 0.0031308 <= cl < 1 + { 1.0, cl >= 1*/ + + return 1.055 * pow(cl, vec3(0.41666)) - 0.055; +} + void main() { vec4 diff = texture2DRect(diffuseRect, vary_fragcoord); - frag_color = pow(diff, vec4(texture_gamma, texture_gamma, texture_gamma, 1.0f)); + diff.rgb = linear_to_srgb(diff.rgb); + frag_color = diff; } diff --git a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl index f0d2746700..dc2519bd0a 100755 --- a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl +++ b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl @@ -78,6 +78,28 @@ vec3 vary_AtmosAttenuation; uniform mat4 inv_proj; uniform vec2 screen_res; + +vec3 srgb_to_linear(vec3 cs) +{ + +/* { cs / 12.92, cs <= 0.04045 + cl = { + { ((cs + 0.055)/1.055)^2.4, cs > 0.04045*/ + + return pow((cs+vec3(0.055))/vec3(1.055), vec3(2.4)); +} + +vec3 linear_to_srgb(vec3 cl) +{ + /*{ 0.0, 0 <= cl + { 12.92 * c, 0 < cl < 0.0031308 + cs = { 1.055 * cl^0.41666 - 0.055, 0.0031308 <= cl < 1 + { 1.0, cl >= 1*/ + + return 1.055 * pow(cl, vec3(0.41666)) - 0.055; +} + + vec3 decode_normal (vec2 enc) { vec2 fenc = enc*4-2; @@ -313,7 +335,7 @@ void main() vec4 diffuse = texture2DRect(diffuseRect, tc); //convert to gamma space - diffuse.rgb = pow(diffuse.rgb, vec3(1.0/2.2)); + diffuse.rgb = linear_to_srgb(diffuse.rgb); vec4 spec = texture2DRect(specularRect, vary_fragcoord.xy); vec3 col; @@ -369,7 +391,7 @@ void main() col = mix(scaleSoftClip(col), fullbrightScaleSoftClip(col), diffuse.a); } - col = pow(col, vec3(2.2)); + col = srgb_to_linear(col); //col = vec3(1,0,1); //col.g = envIntensity; -- cgit v1.2.3