Shaders for beginners

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Using an if statement in a material fragment script

Yes, syntax is like in C++ : if(){} or if(){}else if(){} else{} To do what you want (pallete modifications) take a default sprite.fp as a base of your new fragment program: varying mediump vec2 var_texcoord0; uniform lowp sampler2D texture_sampler; uniform lowp vec4 tint; void main() { // Pre-multiply alpha since all runtime textures already are lowp vec4 tint_pm = vec4(tint.xyz * tint.w, tint.w); gl_FragColor = texture2D(texture_sampler, var_texcoord0.xy) * tint_pm; } above,…