diff options
Diffstat (limited to 'indra/newview/app_settings/shaders/class1/deferred/cloudsV.glsl')
| -rw-r--r-- | indra/newview/app_settings/shaders/class1/deferred/cloudsV.glsl | 88 |
1 files changed, 57 insertions, 31 deletions
diff --git a/indra/newview/app_settings/shaders/class1/deferred/cloudsV.glsl b/indra/newview/app_settings/shaders/class1/deferred/cloudsV.glsl index 3eac63076c..17f425475c 100644 --- a/indra/newview/app_settings/shaders/class1/deferred/cloudsV.glsl +++ b/indra/newview/app_settings/shaders/class1/deferred/cloudsV.glsl @@ -2,19 +2,45 @@ * @file WLCloudsV.glsl * * $LicenseInfo:firstyear=2005&license=viewerlgpl$ + * Second Life Viewer Source Code + * Copyright (C) 2005, 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 * $/LicenseInfo$ */ - +uniform mat4 modelview_projection_matrix; + +ATTRIBUTE vec3 position; +ATTRIBUTE vec2 texcoord0; ////////////////////////////////////////////////////////////////////////// // The vertex shader for creating the atmospheric sky /////////////////////////////////////////////////////////////////////////////// // Output parameters -varying vec4 vary_CloudColorSun; -varying vec4 vary_CloudColorAmbient; -varying float vary_CloudDensity; +VARYING vec4 vary_CloudColorSun; +VARYING vec4 vary_CloudColorAmbient; +VARYING float vary_CloudDensity; + +VARYING vec2 vary_texcoord0; +VARYING vec2 vary_texcoord1; +VARYING vec2 vary_texcoord2; +VARYING vec2 vary_texcoord3; // Inputs uniform vec3 camPosLocal; @@ -24,34 +50,34 @@ uniform vec4 sunlight_color; uniform vec4 ambient; uniform vec4 blue_horizon; uniform vec4 blue_density; -uniform vec4 haze_horizon; -uniform vec4 haze_density; +uniform float haze_horizon; +uniform float haze_density; -uniform vec4 cloud_shadow; -uniform vec4 density_multiplier; -uniform vec4 max_y; +uniform float cloud_shadow; +uniform float density_multiplier; +uniform float max_y; uniform vec4 glow; uniform vec4 cloud_color; -uniform vec4 cloud_scale; +uniform float cloud_scale; void main() { // World / view / projection - gl_Position = ftransform(); + gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0); - gl_TexCoord[0] = gl_MultiTexCoord0; + vary_texcoord0 = texcoord0; // Get relative position - vec3 P = gl_Vertex.xyz - camPosLocal.xyz + vec3(0,50,0); + vec3 P = position.xyz - camPosLocal.xyz + vec3(0,50,0); // Set altitude if (P.y > 0.) { - P *= (max_y.x / P.y); + P *= (max_y / P.y); } else { @@ -73,12 +99,12 @@ void main() // Sunlight attenuation effect (hue and brightness) due to atmosphere // this is used later for sunlight modulation at various altitudes - light_atten = (blue_density * 1.0 + haze_density.x * 0.25) * (density_multiplier.x * max_y.x); + light_atten = (blue_density + vec4(haze_density * 0.25)) * (density_multiplier * max_y); // Calculate relative weights - temp1 = blue_density + haze_density.x; + temp1 = blue_density + haze_density; blue_weight = blue_density / temp1; - haze_weight = haze_density.x / temp1; + haze_weight = haze_density / temp1; // Compute sunlight from P & lightnorm (for long rays like sky) temp2.y = max(0., max(0., Pn.y) * 1.0 + lightnorm.y ); @@ -86,7 +112,7 @@ void main() sunlight *= exp( - light_atten * temp2.y); // Distance - temp2.z = Plen * density_multiplier.x; + temp2.z = Plen * density_multiplier; // Transparency (-> temp1) // ATI Bugfix -- can't store temp1*temp2.z in a variable because the ati @@ -110,14 +136,14 @@ void main() // Increase ambient when there are more clouds vec4 tmpAmbient = ambient; - tmpAmbient += (1. - tmpAmbient) * cloud_shadow.x * 0.5; + tmpAmbient += (1. - tmpAmbient) * cloud_shadow * 0.5; // Dim sunlight by cloud shadow percentage - sunlight *= (1. - cloud_shadow.x); + sunlight *= (1. - cloud_shadow); // Haze color below cloud vec4 additiveColorBelowCloud = ( blue_horizon * blue_weight * (sunlight + tmpAmbient) - + (haze_horizon.r * haze_weight) * (sunlight * temp2.x + tmpAmbient) + + (haze_horizon * haze_weight) * (sunlight * temp2.x + tmpAmbient) ); // CLOUDS @@ -138,21 +164,21 @@ void main() vec4 oHazeColorBelowCloud = additiveColorBelowCloud * (1. - temp1); // Make a nice cloud density based on the cloud_shadow value that was passed in. - vary_CloudDensity = 2. * (cloud_shadow.x - 0.25); + vary_CloudDensity = 2. * (cloud_shadow - 0.25); // Texture coords - gl_TexCoord[0] = gl_MultiTexCoord0; - gl_TexCoord[0].xy -= 0.5; - gl_TexCoord[0].xy /= cloud_scale.x; - gl_TexCoord[0].xy += 0.5; + vary_texcoord0 = texcoord0; + vary_texcoord0.xy -= 0.5; + vary_texcoord0.xy /= cloud_scale; + vary_texcoord0.xy += 0.5; - gl_TexCoord[1] = gl_TexCoord[0]; - gl_TexCoord[1].x += lightnorm.x * 0.0125; - gl_TexCoord[1].y += lightnorm.z * 0.0125; + vary_texcoord1 = vary_texcoord0; + vary_texcoord1.x += lightnorm.x * 0.0125; + vary_texcoord1.y += lightnorm.z * 0.0125; - gl_TexCoord[2] = gl_TexCoord[0] * 16.; - gl_TexCoord[3] = gl_TexCoord[1] * 16.; + vary_texcoord2 = vary_texcoord0 * 16.; + vary_texcoord3 = vary_texcoord1 * 16.; // Combine these to minimize register use vary_CloudColorAmbient += oHazeColorBelowCloud; |