port from perforce

hgplus/ShaderMinifier/tests/real/the orange guy/particle_pixel.glsl

@@ -0,0 +1,15 @@
+uniform sampler2D tex;
+
+uniform float intensity;
+uniform float alpha;
+
+void main()
+{
+	vec4 color = texture2D(tex, gl_TexCoord[0].xy);	
+	float opacity = dot(color.rgb, vec3(0.33,0.33,0.33)) * color.a * alpha;
+	
+	
+	if (opacity < 0.05) discard; 
+		
+	gl_FragData[0] = vec4(color.rgb * intensity, opacity);	
+}