first commit

assets/shaders/rect_fragment.glsl

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+#version 330 core
+out vec4 FragColor;
+in vec2 TexCoords;
+
+uniform sampler2D tex;
+
+void main()
+{
+	vec3 color = texture(tex, TexCoords).rgb;
+    FragColor = vec4(color, 1.0);
+}