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/**
* @file alphaF.glsl
*
* Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
* $License$
*/
#extension GL_ARB_texture_rectangle : enable
uniform sampler2D diffuseMap;
uniform sampler2D noiseMap;
uniform sampler2DRect depthMap;
uniform mat4 shadow_matrix[6];
uniform vec4 shadow_clip;
uniform vec2 screen_res;
vec3 atmosLighting(vec3 light);
vec3 scaleSoftClip(vec3 light);
varying vec3 vary_ambient;
varying vec3 vary_directional;
varying vec3 vary_fragcoord;
varying vec3 vary_position;
uniform mat4 inv_proj;
vec4 getPosition(vec2 pos_screen)
{
float depth = texture2DRect(depthMap, pos_screen.xy).a;
vec2 sc = pos_screen.xy*2.0;
sc /= screen_res;
sc -= vec2(1.0,1.0);
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;
}
void main()
{
vec2 frag = vary_fragcoord.xy/vary_fragcoord.z*0.5+0.5;
frag *= screen_res;
vec3 samp_pos = getPosition(frag).xyz;
vec4 pos = vec4(vary_position, 1.0);
vec4 col = vec4(vary_ambient + vary_directional.rgb, gl_Color.a);
vec4 color = texture2D(diffuseMap, gl_TexCoord[0].xy) * col;
color.rgb = atmosLighting(color.rgb);
color.rgb = scaleSoftClip(color.rgb);
gl_FragColor = color;
//gl_FragColor = vec4(1,0,1,1);
//gl_FragColor = vec4(1,0,1,1)*shadow;
}
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