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[require]
GLSL >= 1.10
[vertex shader]
#version 120
#extension GL_ARB_texture_rectangle : enable
#define flat
#define texture2DRectOffset(sampler, coords, offset) texture2DRect(sampler, coords + vec2(offset))
#define shadow2DRectOffset(sampler, coords, offset) shadow2DRect(sampler, coords + vec2(offset))
attribute vec4 vvertex;
attribute vec2 vtexcoord0;
uniform float offsets[8];
varying vec2 texcoord0, texcoord1, texcoord2;
varying vec2 texcoord3, texcoord4;
varying vec2 texcoord5, texcoord6;
void main(void)
{
gl_Position = vvertex;
texcoord0 = vtexcoord0;
vec2 tc1 = vtexcoord0.xy, tc2 = vtexcoord0;
tc1.x += offsets[1];
tc2.x -= offsets[1];
texcoord1 = tc1;
texcoord2 = tc2;
tc1.x = vtexcoord0.x + offsets[2];
tc2.x = vtexcoord0.x - offsets[2];
texcoord3 = tc1;
texcoord4 = tc2;
tc1.x = vtexcoord0.x + offsets[3];
tc2.x = vtexcoord0.x - offsets[3];
texcoord5 = tc1;
texcoord6 = tc2;
}
[fragment shader]
#version 120
#extension GL_ARB_texture_rectangle : enable
#define flat
#define texture2DRectOffset(sampler, coords, offset) texture2DRect(sampler, coords + vec2(offset))
#define shadow2DRectOffset(sampler, coords, offset) shadow2DRect(sampler, coords + vec2(offset))
#define fragdata(loc, name, type)
#define fragcolor gl_FragData[0]
uniform float weights[8];
uniform float offsets[8];
uniform sampler2D tex0;
varying vec2 texcoord0, texcoord1, texcoord2;
varying vec2 texcoord3, texcoord4;
varying vec2 texcoord5, texcoord6;
fragdata(0, fragcolor, vec4)
void main(void)
{
#define texval(coords) texture2D(tex0, (coords))
vec4 val = texval(texcoord0) * weights[0];
val += weights[1] * (texval(texcoord1) + texval(texcoord2));
val += weights[2] * (texval(texcoord3) + texval(texcoord4));
val += weights[3] * (texval(texcoord5) + texval(texcoord6));
val += weights[4] *
(texval(vec2(texcoord0.x + offsets[4], texcoord0.y)) + texval(vec2(texcoord0.x - offsets[4], texcoord0.y)));
val += weights[5] *
(texval(vec2(texcoord0.x + offsets[5], texcoord0.y)) + texval(vec2(texcoord0.x - offsets[5], texcoord0.y)));
val += weights[6] *
(texval(vec2(texcoord0.x + offsets[6], texcoord0.y)) + texval(vec2(texcoord0.x - offsets[6], texcoord0.y)));
val += weights[7] *
(texval(vec2(texcoord0.x + offsets[7], texcoord0.y)) + texval(vec2(texcoord0.x - offsets[7], texcoord0.y)));
fragcolor = val;
}
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