removed the colored vertex and combined into one. Half fixed texturing. Fully fixed images and compute swapping

resources/shaders/simple_image.fragment

@@ -2,7 +2,7 @@
 // SIMPLE TEXTURE : FRAGMENT SHADER
 
 // These come in from the previous shader (vertex)
-layout(location = 0) in vec2 img_coords;
+layout(location = 0) in vec2 position;
 
 // This goes out to the bound image in window_size_dependent setup
 layout(location = 0) out vec4 f_color;
@@ -15,8 +15,9 @@ void main() {
 
     ivec2 pos = ivec2(gl_FragCoord.x, gl_FragCoord.y);
 
-    f_color = imageLoad(img, ivec2(pos)) / (255.0);
+    f_color = imageLoad(img, ivec2(position)) / (255.0);
 
     float gamma = 0.5;
     f_color.rgb = pow(f_color.rgb, vec3(1.0/gamma));
+
 }