#include "pxl8_shader.h"
#include "pxl8_shader_builtins.h"

u8 pxl8_shader_unlit(
    pxl8_shader_ctx* ctx,
    const pxl8_shader_bindings* bindings,
    const pxl8_shader_uniforms* uniforms
) {
    u8 tex_idx = 0;
    if (bindings && bindings->atlas) {
        tex_idx = pxl8_sample_indexed(bindings, ctx->v_uv);
        if (tex_idx == 0) return 0;
    } else {
        if (uniforms && uniforms->dither) {
            tex_idx = pxl8_gfx_dither(ctx->v_color, (u32)ctx->x, (u32)ctx->y);
        } else {
            f32 clamped = pxl8_clamp(ctx->v_color, 0.0f, 255.0f);
            tex_idx = (u8)(clamped);
        }
    }

    if (uniforms && uniforms->emissive) {
        u32 rgb = 0x00FFFFFF;
        if (bindings && bindings->palette) {
            rgb = bindings->palette[tex_idx] & 0x00FFFFFF;
        }
        pxl8_set_light_tint(ctx, rgb, 1.0f);
    }

    return tex_idx;
}