Add depth buffer support to RgbaColorRenderer.

glsl/color.frag

@@ -1,6 +1,18 @@
 varying vec4 vColor;
+uniform bool EnableDepthPreview;
 
 void main()
 {
-	gl_FragColor = vColor;
+	float depth = gl_FragCoord.z;
+
+	// Convert to window coords
+	gl_FragDepth = 0.5 * depth + 0.5;
+
+	if (EnableDepthPreview)
+	{
+		// Front of the depth buffer is at 0, but we want to render it as bright
+		gl_FragColor = vec4(vec3(1.0 - gl_FragDepth), 1.0);
+	}
+	else
+		gl_FragColor = vColor;
 }

glsl/color.vert

@@ -1,5 +1,5 @@
-uniform vec2 Scroll;
-uniform vec2 r1, r2;
+uniform vec3 Scroll;
+uniform vec3 r1, r2;
 
 attribute vec4 aVertexPosition;
 attribute vec4 aVertexTexCoord;
@@ -7,7 +7,6 @@ varying vec4 vColor;
 
 void main()
 {
-	vec2 p = (aVertexPosition.xy - Scroll.xy)*r1 + r2;
-	gl_Position = vec4(p.x,p.y,0,1);
+	gl_Position = vec4((aVertexPosition.xyz - Scroll.xyz) * r1 + r2, 1);  
 	vColor = aVertexTexCoord;
 }