+ | Basic shader

shaders/frag.glsl

@@ -1,7 +1,17 @@
-#version 330 core
-out vec4 FragColor;
+#version 430 core
+out vec4        FragColor;
+
+uniform vec2    u_resolution;
 
 void main()
 {
-    FragColor = vec4(1.0, 0., 0., 1.);
+    vec2    uv;
+    vec4    color;
+
+    uv = gl_FragCoord.xy / u_resolution.xy;
+    uv.x *= u_resolution.x / u_resolution.y;
+
+    color = vec4(uv.x, uv.y, 0., 0.);
+
+    FragColor = color;
 }