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#version 330
#define PI 3.1415926538
// Input vertex attributes (from vertex shader)
in vec2 fragTexCoord;
in vec4 fragColor;
vec2 flipped = vec2(fragTexCoord.x, 1 - fragTexCoord.y);
// Input uniform values
uniform sampler2D texture0;
uniform vec4 colDiffuse;
// Output fragment color
out vec4 finalColor;
// NOTE: Add here your custom variables
uniform float renderWidth;
uniform float renderHeight;
vec2 textureResolution = vec2(renderWidth, renderHeight);
uniform float grid_size;
//vec2 onePixel = vec2(1.0, 1.0) / textureResolution;
vec2 pixelCoor = flipped * textureResolution;
float gridify(float coordinate, float spacing) {
return clamp(floor(((-cos( coordinate * 2 * PI)) / 2) + spacing), 0.0, 1.0);
}
float is_pixel(vec2 coordinate, float spacing) {
return gridify(coordinate.x, spacing) * gridify(coordinate.y, spacing);
}
void main()
{
//float is_pixel = gridify(pixelCoor.x, 1.0) * gridify(pixelCoor.y, 1.0);
vec4 texelColor = texture(texture0, flipped);
texelColor.rbg *= is_pixel(pixelCoor, grid_size);
// NOTE: Implement here your fragment shader code
finalColor = texelColor*colDiffuse;
}
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