Initial commit

game-of-life-test/dot_matrix.gdshader

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+shader_type canvas_item;
+
+uniform sampler2D unlitTex;
+uniform sampler2D litTex;
+uniform sampler2D binDataTex;
+uniform int n;
+
+const int cellSize = 8;
+
+void vertex() {
+	// Called for every vertex the material is visible on.
+}
+
+void fragment() {
+	// Called for every pixel the material is visible on.
+	vec2 totalGridSize = vec2(float(n) * float(cellSize));
+
+	vec2 scaledUV = UV * float(n);
+	ivec2 cellIdx = ivec2(floor(scaledUV));
+	vec2 cellUV = fract(scaledUV);
+
+	float binVal = texelFetch(binDataTex, cellIdx, 0).r;
+	bool isWhite = binVal > 0.5;
+
+	vec4 color = texture(unlitTex, cellUV);
+	if (isWhite) {
+		color = texture(litTex, cellUV);
+	}
+
+	COLOR = color;
+}
+
+//void light() {
+//	// Called for every pixel for every light affecting the material.
+//	// Uncomment to replace the default light processing function with this one.
+//}