cleaned up some code

1 files changed, 43 insertions, 0 deletions

diff --git a/shaders/pixalizer.fs b/shaders/pixalizer.fs
new file mode 100644
index 0000000..a215a73
--- /dev/null
+++ b/shaders/pixalizer.fs
@@ -0,0 +1,43 @@
+#version 330
+
+#define PI 3.1415926538
+
+// Input vertex attributes (from vertex shader)
+in vec2 fragTexCoord;
+in vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// Output fragment color
+out vec4 finalColor;
+
+// Imported variables from code
+uniform float renderWidth;
+uniform float renderHeight;
+uniform float grid_size;
+
+// Variable set up
+vec2 flipped = vec2(fragTexCoord.x, 1 - fragTexCoord.y); // flipping
+vec2 textureResolution = vec2(renderWidth, renderHeight);
+//vec2 onePixel = vec2(1.0, 1.0) / textureResolution; // distance of a single pixel in texels
+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;
+}