Sha256: 984ff3f82f52e40afa863b78b0de7fbd3357074518fd1457c0697e3572749095
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Size: 1.27 KB
Versions: 11
Compression:
Stored size: 1.27 KB
Contents
#version 110
const float ALPHA_THRESHOLD = 0.5;
const vec2 TextureSize = vec2(1024.0, 1024.0); // Gosu-specific!
const vec2 PixelSize = 1.0 / TextureSize;
// Automatically set by Ray (actually passed from the vertex shader).
uniform sampler2D in_Texture; // Original texture.
//uniform int in_WindowWidth;
//uniform int in_WindowHeight;
uniform vec4 in_OutlineColor;
uniform float in_OutlineWidth; // In pixels.
varying vec2 var_TexCoord; // Pixel to process on this pass
varying vec4 var_Color;
void main()
{
gl_FragColor = texture2D(in_Texture, var_TexCoord); // * var_Color;
if(gl_FragColor.a < ALPHA_THRESHOLD)
{
for(int i = -1; i < 2; i++)
{
for(int j = -1; j < 2; j++)
{
if(i != 0 && j != 0)
{
// Get the color of the adjacent pixel.
vec2 pos = var_TexCoord + vec2(i, j) * PixelSize * in_OutlineWidth;
if(texture2D(in_Texture, pos).a > ALPHA_THRESHOLD)
{
gl_FragColor = in_OutlineColor;
// Simplified return, since GLSL 1.10 hates `return`.
i = 2;
j = 2;
}
}
}
}
}
}
Version data entries
11 entries across 11 versions & 2 rubygems