I try to write a shader to make a border for rectangle,but something wrong。

[Li yuanlin]

Code: Select all

init python:#####rectangle borders
    renpy.register_shader("myshader.rectborders", variables="""
        uniform float u_border_width;
        uniform float u_aspect;
        varying vec2 v_tex_coord;
        attribute vec2 a_tex_coord;
        uniform vec4 u_renpy_solid_color_rect;
        uniform vec4 u_renpy_solid_color_border;
    """,vertex_300="""
        v_tex_coord = a_tex_coord;
    """,fragment_300="""

        if (v_tex_coord.x < 1.0 - u_border_width && v_tex_coord.x > u_border_width &&
        v_tex_coord.y < 1.0 - u_border_width / u_aspect && v_tex_coord.y > u_border_width/ u_aspect) {
            gl_FragColor =  u_renpy_solid_color_rect;
        }
        else {
            gl_FragColor = u_renpy_solid_color_border;
        }
    """)

Can someone pick up the error?

[m_from_space]

The first error is that you don't wrap your code around the code tag when posting here. o_o (It's just really annoying to read that way.)

[Li yuanlin]

Can someone help me?

[zmook]

Can someone help me?

We'll try, but my impression is that it is pretty rare to actually use shaders in a Renpy project, so most of us have very little experience with them.

First, please describe your error. Copy your error messages. Say what you expected it to do. We don't have much to go on if you only say "something went wrong."