Dairy-Drift/resources/shaders/plane/shader.vert

#version 330 core

layout(location = 0) in vec3 position;
layout(location = 1) in vec2 texcoord;

out vec2 v_texcoord;

uniform mat4 model;
uniform mat4 view;
uniform mat4 projection;
uniform float tile_size;
uniform float scroll_speed;

uniform vec3 camera_position;
void main()
{
    // Apply the model, view, and projection matrices
    gl_Position = projection * view * model * vec4(position, 1.0);

    // Calculate the texture coordinate offset based on the camera position
    vec2 offset = (camera_position.xz - position.xz) / tile_size;
    offset += scroll_speed * vec2(0, 1) * -(gl_Position.w / projection[1][1]);
    v_texcoord = texcoord + offset;
}