package renderer

import "core:log"
import "core:fmt"

MATERIAL_MAX_TEXTURES :: 32

Material :: struct {
    // TODO: SS - 'Name'?
    shader_program: ^Shader_Program,

    textures: [MATERIAL_MAX_TEXTURES]^Texture,
    texture_count: u8,

    uniforms: []Uniform,

    casts_shadow: bool,
    uv_scale: [2]f32, // TODO: SS - Move?
}

create_material :: proc(program: ^Shader_Program, textures: []^Texture, uniforms: []Uniform, casts_shadow: bool) -> (Material, bool) {
    m: Material
    m.shader_program = program
    
    for t, i in textures {
        if t == nil {
            log.warnf("Found nil texture at index %v in when creating material.", i)
            continue
        }

        if m.texture_count >= MATERIAL_MAX_TEXTURES {
            log.warnf("Too many textures passed when creating material. Max is %v.", MATERIAL_MAX_TEXTURES)
            break
        }

        m.textures[m.texture_count] = t
        m.texture_count += 1
    }

    if m.texture_count == 0 {
        log.warn("No textures passed when creating material.")
        // TODO: SS - Should we return false here?
    }


    m.uniforms = uniforms
    m.casts_shadow = casts_shadow
    m.uv_scale = { 1.0, 1.0 } // NOTE: SS - Hardcoded.

    return m, true
}