Added parallax background, ship, and firing. Collision is WIP

res/shaders/s2b/frag.gls

@@ -0,0 +1,19 @@
+#version 330 core
+
+uniform sampler2D layer0;
+uniform sampler2D layer1;
+
+uniform float offset0 = 1;
+uniform float offset1 = 1;
+
+in vec2 texCoords;
+
+out vec4 color;
+
+void main() {
+    vec4 color0 = texture(layer0, texCoords + vec2(0, offset0));
+    vec4 color1 = texture(layer1, texCoords + vec2(0, offset1));
+	color = mix(color0, color1, 1 - color0.a);
+	if (color.a == 0)
+	    discard;
+}

res/shaders/s2b/vert.gls

@@ -0,0 +1,13 @@
+#version 330 core
+
+uniform mat4 mvp;
+
+layout (location = 0) in vec3 vertices;
+layout (location = 1) in vec2 itexCoords;
+
+out vec2 texCoords;
+
+void main() {
+	texCoords = itexCoords;
+	gl_Position = mvp * vec4(vertices, 1);
+}

res/shaders/s2t/frag.gls

@@ -2,20 +2,12 @@
 
 uniform sampler2D sampler;
 
-uniform vec4  iColor = vec4(1, 1, 1, 1);
-uniform float alpha  = 1;
-uniform float amount = 1;
-
 in vec2 texCoords;
 
 out vec4 color;
 
 void main() {
-	vec4 texColor = texture(sampler, texCoords);
-	if(texColor.a == 0)
-		discard;
-	else {
-		color = mix(iColor, texColor, amount);
-		color.a = color.a * alpha;
-	}
+    color = texture(sampler, texCoords);
+	if (color.a == 0)
+	    discard;
 }